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/*
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* QEMU PC System Emulator
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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#include <string.h> |
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#include <ctype.h> |
29 |
#include <getopt.h> |
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#include <inttypes.h> |
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#include <unistd.h> |
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#include <sys/mman.h> |
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#include <fcntl.h> |
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#include <signal.h> |
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#include <time.h> |
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#include <sys/time.h> |
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#include <malloc.h> |
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#include <termios.h> |
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#include <sys/poll.h> |
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#include <errno.h> |
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#include <sys/wait.h> |
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|
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#include <sys/ioctl.h> |
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#include <sys/socket.h> |
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#include <linux/if.h> |
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#include <linux/if_tun.h> |
47 |
|
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#include "cpu.h" |
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#include "disas.h" |
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#include "thunk.h" |
51 |
|
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#include "vl.h" |
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|
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#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" |
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#define BIOS_FILENAME "bios.bin" |
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#define VGABIOS_FILENAME "vgabios.bin" |
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|
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//#define DEBUG_UNUSED_IOPORT
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|
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//#define DEBUG_IRQ_LATENCY
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|
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/* output Bochs bios info messages */
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//#define DEBUG_BIOS
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|
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//#define DEBUG_CMOS
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|
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/* debug PIC */
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//#define DEBUG_PIC
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|
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/* debug NE2000 card */
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//#define DEBUG_NE2000
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|
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/* debug PC keyboard */
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//#define DEBUG_KBD
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|
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/* debug PC keyboard : only mouse */
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//#define DEBUG_MOUSE
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|
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//#define DEBUG_SERIAL
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|
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#if !defined(CONFIG_SOFTMMU)
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#define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024) |
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#else
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#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024) |
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#endif
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|
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#if defined (TARGET_I386)
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#define KERNEL_LOAD_ADDR 0x00100000 |
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#elif defined (TARGET_PPC)
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//#define USE_OPEN_FIRMWARE
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#if !defined (USE_OPEN_FIRMWARE)
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#define KERNEL_LOAD_ADDR 0x01000000 |
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#define KERNEL_STACK_ADDR 0x01200000 |
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#else
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#define KERNEL_LOAD_ADDR 0x00000000 |
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#define KERNEL_STACK_ADDR 0x00400000 |
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#endif
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#endif
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#define INITRD_LOAD_ADDR 0x00400000 |
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#define KERNEL_PARAMS_ADDR 0x00090000 |
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#define KERNEL_CMDLINE_ADDR 0x00099000 |
102 |
|
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#define GUI_REFRESH_INTERVAL 30 |
104 |
|
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/* XXX: use a two level table to limit memory usage */
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#define MAX_IOPORTS 65536 |
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|
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static const char *bios_dir = CONFIG_QEMU_SHAREDIR; |
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char phys_ram_file[1024]; |
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CPUState *global_env; |
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CPUState *cpu_single_env; |
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IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
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IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
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BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD]; |
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int vga_ram_size;
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static DisplayState display_state;
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int nographic;
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int term_inited;
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int64_t ticks_per_sec; |
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int boot_device = 'c'; |
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static int ram_size; |
122 |
|
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/***********************************************************/
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/* x86 io ports */
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|
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uint32_t default_ioport_readb(CPUState *env, uint32_t address) |
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{ |
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#ifdef DEBUG_UNUSED_IOPORT
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fprintf(stderr, "inb: port=0x%04x\n", address);
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#endif
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return 0xff; |
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} |
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|
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void default_ioport_writeb(CPUState *env, uint32_t address, uint32_t data)
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{ |
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#ifdef DEBUG_UNUSED_IOPORT
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fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
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#endif
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} |
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|
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/* default is to make two byte accesses */
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uint32_t default_ioport_readw(CPUState *env, uint32_t address) |
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{ |
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uint32_t data; |
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data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](env, address); |
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data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](env, address + 1) << 8; |
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return data;
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} |
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void default_ioport_writew(CPUState *env, uint32_t address, uint32_t data)
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{ |
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ioport_write_table[0][address & (MAX_IOPORTS - 1)](env, address, data & 0xff); |
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ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](env, address + 1, (data >> 8) & 0xff); |
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} |
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uint32_t default_ioport_readl(CPUState *env, uint32_t address) |
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{ |
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#ifdef DEBUG_UNUSED_IOPORT
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fprintf(stderr, "inl: port=0x%04x\n", address);
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#endif
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return 0xffffffff; |
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} |
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void default_ioport_writel(CPUState *env, uint32_t address, uint32_t data)
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{ |
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#ifdef DEBUG_UNUSED_IOPORT
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fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
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#endif
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} |
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|
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void init_ioports(void) |
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{ |
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int i;
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for(i = 0; i < MAX_IOPORTS; i++) { |
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ioport_read_table[0][i] = default_ioport_readb;
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ioport_write_table[0][i] = default_ioport_writeb;
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ioport_read_table[1][i] = default_ioport_readw;
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ioport_write_table[1][i] = default_ioport_writew;
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ioport_read_table[2][i] = default_ioport_readl;
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ioport_write_table[2][i] = default_ioport_writel;
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} |
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} |
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/* size is the word size in byte */
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int register_ioport_read(int start, int length, IOPortReadFunc *func, int size) |
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{ |
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int i, bsize;
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if (size == 1) |
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bsize = 0;
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else if (size == 2) |
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bsize = 1;
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else if (size == 4) |
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bsize = 2;
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else
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return -1; |
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for(i = start; i < start + length; i += size)
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ioport_read_table[bsize][i] = func; |
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return 0; |
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} |
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/* size is the word size in byte */
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int register_ioport_write(int start, int length, IOPortWriteFunc *func, int size) |
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{ |
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int i, bsize;
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if (size == 1) |
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bsize = 0;
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else if (size == 2) |
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bsize = 1;
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else if (size == 4) |
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bsize = 2;
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else
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return -1; |
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for(i = start; i < start + length; i += size)
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ioport_write_table[bsize][i] = func; |
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return 0; |
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} |
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void pstrcpy(char *buf, int buf_size, const char *str) |
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{ |
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int c;
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char *q = buf;
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if (buf_size <= 0) |
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return;
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for(;;) {
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c = *str++; |
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if (c == 0 || q >= buf + buf_size - 1) |
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break;
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*q++ = c; |
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} |
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*q = '\0';
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} |
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/* strcat and truncate. */
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char *pstrcat(char *buf, int buf_size, const char *s) |
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{ |
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int len;
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len = strlen(buf); |
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if (len < buf_size)
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pstrcpy(buf + len, buf_size - len, s); |
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return buf;
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} |
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#if defined (TARGET_I386)
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int load_kernel(const char *filename, uint8_t *addr, |
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uint8_t *real_addr) |
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{ |
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int fd, size;
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int setup_sects;
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fd = open(filename, O_RDONLY); |
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if (fd < 0) |
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return -1; |
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/* load 16 bit code */
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if (read(fd, real_addr, 512) != 512) |
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goto fail;
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setup_sects = real_addr[0x1F1];
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if (!setup_sects)
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setup_sects = 4;
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if (read(fd, real_addr + 512, setup_sects * 512) != |
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setup_sects * 512)
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goto fail;
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/* load 32 bit code */
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size = read(fd, addr, 16 * 1024 * 1024); |
271 |
if (size < 0) |
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goto fail;
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close(fd); |
274 |
return size;
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fail:
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close(fd); |
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return -1; |
278 |
} |
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#endif
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/* return the size or -1 if error */
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int load_image(const char *filename, uint8_t *addr) |
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{ |
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int fd, size;
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fd = open(filename, O_RDONLY); |
286 |
if (fd < 0) |
287 |
return -1; |
288 |
size = lseek(fd, 0, SEEK_END);
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lseek(fd, 0, SEEK_SET);
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if (read(fd, addr, size) != size) {
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close(fd); |
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return -1; |
293 |
} |
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close(fd); |
295 |
return size;
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} |
297 |
|
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void cpu_outb(CPUState *env, int addr, int val) |
299 |
{ |
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ioport_write_table[0][addr & (MAX_IOPORTS - 1)](env, addr, val); |
301 |
} |
302 |
|
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void cpu_outw(CPUState *env, int addr, int val) |
304 |
{ |
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ioport_write_table[1][addr & (MAX_IOPORTS - 1)](env, addr, val); |
306 |
} |
307 |
|
308 |
void cpu_outl(CPUState *env, int addr, int val) |
309 |
{ |
310 |
ioport_write_table[2][addr & (MAX_IOPORTS - 1)](env, addr, val); |
311 |
} |
312 |
|
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int cpu_inb(CPUState *env, int addr) |
314 |
{ |
315 |
return ioport_read_table[0][addr & (MAX_IOPORTS - 1)](env, addr); |
316 |
} |
317 |
|
318 |
int cpu_inw(CPUState *env, int addr) |
319 |
{ |
320 |
return ioport_read_table[1][addr & (MAX_IOPORTS - 1)](env, addr); |
321 |
} |
322 |
|
323 |
int cpu_inl(CPUState *env, int addr) |
324 |
{ |
325 |
return ioport_read_table[2][addr & (MAX_IOPORTS - 1)](env, addr); |
326 |
} |
327 |
|
328 |
/***********************************************************/
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329 |
void ioport80_write(CPUState *env, uint32_t addr, uint32_t data)
|
330 |
{ |
331 |
} |
332 |
|
333 |
void hw_error(const char *fmt, ...) |
334 |
{ |
335 |
va_list ap; |
336 |
|
337 |
va_start(ap, fmt); |
338 |
fprintf(stderr, "qemu: hardware error: ");
|
339 |
vfprintf(stderr, fmt, ap); |
340 |
fprintf(stderr, "\n");
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341 |
#ifdef TARGET_I386
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342 |
cpu_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP); |
343 |
#else
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344 |
cpu_dump_state(global_env, stderr, 0);
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345 |
#endif
|
346 |
va_end(ap); |
347 |
abort(); |
348 |
} |
349 |
|
350 |
/***********************************************************/
|
351 |
/* cmos emulation */
|
352 |
|
353 |
#if defined (TARGET_I386)
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354 |
#define RTC_SECONDS 0 |
355 |
#define RTC_SECONDS_ALARM 1 |
356 |
#define RTC_MINUTES 2 |
357 |
#define RTC_MINUTES_ALARM 3 |
358 |
#define RTC_HOURS 4 |
359 |
#define RTC_HOURS_ALARM 5 |
360 |
#define RTC_ALARM_DONT_CARE 0xC0 |
361 |
|
362 |
#define RTC_DAY_OF_WEEK 6 |
363 |
#define RTC_DAY_OF_MONTH 7 |
364 |
#define RTC_MONTH 8 |
365 |
#define RTC_YEAR 9 |
366 |
|
367 |
#define RTC_REG_A 10 |
368 |
#define RTC_REG_B 11 |
369 |
#define RTC_REG_C 12 |
370 |
#define RTC_REG_D 13 |
371 |
|
372 |
/* PC cmos mappings */
|
373 |
#define REG_EQUIPMENT_BYTE 0x14 |
374 |
#define REG_IBM_CENTURY_BYTE 0x32 |
375 |
#define REG_IBM_PS2_CENTURY_BYTE 0x37 |
376 |
|
377 |
uint8_t cmos_data[128];
|
378 |
uint8_t cmos_index; |
379 |
|
380 |
void cmos_ioport_write(CPUState *env, uint32_t addr, uint32_t data)
|
381 |
{ |
382 |
if (addr == 0x70) { |
383 |
cmos_index = data & 0x7f;
|
384 |
} else {
|
385 |
#ifdef DEBUG_CMOS
|
386 |
printf("cmos: write index=0x%02x val=0x%02x\n",
|
387 |
cmos_index, data); |
388 |
#endif
|
389 |
switch(addr) {
|
390 |
case RTC_SECONDS_ALARM:
|
391 |
case RTC_MINUTES_ALARM:
|
392 |
case RTC_HOURS_ALARM:
|
393 |
/* XXX: not supported */
|
394 |
cmos_data[cmos_index] = data; |
395 |
break;
|
396 |
case RTC_SECONDS:
|
397 |
case RTC_MINUTES:
|
398 |
case RTC_HOURS:
|
399 |
case RTC_DAY_OF_WEEK:
|
400 |
case RTC_DAY_OF_MONTH:
|
401 |
case RTC_MONTH:
|
402 |
case RTC_YEAR:
|
403 |
cmos_data[cmos_index] = data; |
404 |
break;
|
405 |
case RTC_REG_A:
|
406 |
case RTC_REG_B:
|
407 |
cmos_data[cmos_index] = data; |
408 |
break;
|
409 |
case RTC_REG_C:
|
410 |
case RTC_REG_D:
|
411 |
/* cannot write to them */
|
412 |
break;
|
413 |
default:
|
414 |
cmos_data[cmos_index] = data; |
415 |
break;
|
416 |
} |
417 |
} |
418 |
} |
419 |
|
420 |
static inline int to_bcd(int a) |
421 |
{ |
422 |
return ((a / 10) << 4) | (a % 10); |
423 |
} |
424 |
|
425 |
static void cmos_update_time(void) |
426 |
{ |
427 |
struct tm *tm;
|
428 |
time_t ti; |
429 |
|
430 |
ti = time(NULL);
|
431 |
tm = gmtime(&ti); |
432 |
cmos_data[RTC_SECONDS] = to_bcd(tm->tm_sec); |
433 |
cmos_data[RTC_MINUTES] = to_bcd(tm->tm_min); |
434 |
cmos_data[RTC_HOURS] = to_bcd(tm->tm_hour); |
435 |
cmos_data[RTC_DAY_OF_WEEK] = to_bcd(tm->tm_wday); |
436 |
cmos_data[RTC_DAY_OF_MONTH] = to_bcd(tm->tm_mday); |
437 |
cmos_data[RTC_MONTH] = to_bcd(tm->tm_mon + 1);
|
438 |
cmos_data[RTC_YEAR] = to_bcd(tm->tm_year % 100);
|
439 |
cmos_data[REG_IBM_CENTURY_BYTE] = to_bcd((tm->tm_year / 100) + 19); |
440 |
cmos_data[REG_IBM_PS2_CENTURY_BYTE] = cmos_data[REG_IBM_CENTURY_BYTE]; |
441 |
} |
442 |
|
443 |
uint32_t cmos_ioport_read(CPUState *env, uint32_t addr) |
444 |
{ |
445 |
int ret;
|
446 |
|
447 |
if (addr == 0x70) { |
448 |
return 0xff; |
449 |
} else {
|
450 |
switch(cmos_index) {
|
451 |
case RTC_SECONDS:
|
452 |
case RTC_MINUTES:
|
453 |
case RTC_HOURS:
|
454 |
case RTC_DAY_OF_WEEK:
|
455 |
case RTC_DAY_OF_MONTH:
|
456 |
case RTC_MONTH:
|
457 |
case RTC_YEAR:
|
458 |
case REG_IBM_CENTURY_BYTE:
|
459 |
case REG_IBM_PS2_CENTURY_BYTE:
|
460 |
cmos_update_time(); |
461 |
ret = cmos_data[cmos_index]; |
462 |
break;
|
463 |
case RTC_REG_A:
|
464 |
ret = cmos_data[cmos_index]; |
465 |
/* toggle update-in-progress bit for Linux (same hack as
|
466 |
plex86) */
|
467 |
cmos_data[RTC_REG_A] ^= 0x80;
|
468 |
break;
|
469 |
case RTC_REG_C:
|
470 |
ret = cmos_data[cmos_index]; |
471 |
pic_set_irq(8, 0); |
472 |
cmos_data[RTC_REG_C] = 0x00;
|
473 |
break;
|
474 |
default:
|
475 |
ret = cmos_data[cmos_index]; |
476 |
break;
|
477 |
} |
478 |
#ifdef DEBUG_CMOS
|
479 |
printf("cmos: read index=0x%02x val=0x%02x\n",
|
480 |
cmos_index, ret); |
481 |
#endif
|
482 |
return ret;
|
483 |
} |
484 |
} |
485 |
|
486 |
void cmos_init(void) |
487 |
{ |
488 |
int val;
|
489 |
|
490 |
cmos_update_time(); |
491 |
|
492 |
cmos_data[RTC_REG_A] = 0x26;
|
493 |
cmos_data[RTC_REG_B] = 0x02;
|
494 |
cmos_data[RTC_REG_C] = 0x00;
|
495 |
cmos_data[RTC_REG_D] = 0x80;
|
496 |
|
497 |
/* various important CMOS locations needed by PC/Bochs bios */
|
498 |
|
499 |
cmos_data[REG_EQUIPMENT_BYTE] = 0x02; /* FPU is there */ |
500 |
cmos_data[REG_EQUIPMENT_BYTE] |= 0x04; /* PS/2 mouse installed */ |
501 |
|
502 |
/* memory size */
|
503 |
val = (ram_size / 1024) - 1024; |
504 |
if (val > 65535) |
505 |
val = 65535;
|
506 |
cmos_data[0x17] = val;
|
507 |
cmos_data[0x18] = val >> 8; |
508 |
cmos_data[0x30] = val;
|
509 |
cmos_data[0x31] = val >> 8; |
510 |
|
511 |
val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536); |
512 |
if (val > 65535) |
513 |
val = 65535;
|
514 |
cmos_data[0x34] = val;
|
515 |
cmos_data[0x35] = val >> 8; |
516 |
|
517 |
switch(boot_device) {
|
518 |
case 'a': |
519 |
case 'b': |
520 |
cmos_data[0x3d] = 0x01; /* floppy boot */ |
521 |
break;
|
522 |
default:
|
523 |
case 'c': |
524 |
cmos_data[0x3d] = 0x02; /* hard drive boot */ |
525 |
break;
|
526 |
case 'd': |
527 |
cmos_data[0x3d] = 0x03; /* CD-ROM boot */ |
528 |
break;
|
529 |
} |
530 |
|
531 |
register_ioport_write(0x70, 2, cmos_ioport_write, 1); |
532 |
register_ioport_read(0x70, 2, cmos_ioport_read, 1); |
533 |
} |
534 |
|
535 |
void cmos_register_fd (uint8_t fd0, uint8_t fd1)
|
536 |
{ |
537 |
int nb = 0; |
538 |
|
539 |
cmos_data[0x10] = 0; |
540 |
switch (fd0) {
|
541 |
case 0: |
542 |
/* 1.44 Mb 3"5 drive */
|
543 |
cmos_data[0x10] |= 0x40; |
544 |
break;
|
545 |
case 1: |
546 |
/* 2.88 Mb 3"5 drive */
|
547 |
cmos_data[0x10] |= 0x60; |
548 |
break;
|
549 |
case 2: |
550 |
/* 1.2 Mb 5"5 drive */
|
551 |
cmos_data[0x10] |= 0x20; |
552 |
break;
|
553 |
} |
554 |
switch (fd1) {
|
555 |
case 0: |
556 |
/* 1.44 Mb 3"5 drive */
|
557 |
cmos_data[0x10] |= 0x04; |
558 |
break;
|
559 |
case 1: |
560 |
/* 2.88 Mb 3"5 drive */
|
561 |
cmos_data[0x10] |= 0x06; |
562 |
break;
|
563 |
case 2: |
564 |
/* 1.2 Mb 5"5 drive */
|
565 |
cmos_data[0x10] |= 0x02; |
566 |
break;
|
567 |
} |
568 |
if (fd0 < 3) |
569 |
nb++; |
570 |
if (fd1 < 3) |
571 |
nb++; |
572 |
switch (nb) {
|
573 |
case 0: |
574 |
break;
|
575 |
case 1: |
576 |
cmos_data[REG_EQUIPMENT_BYTE] |= 0x01; /* 1 drive, ready for boot */ |
577 |
break;
|
578 |
case 2: |
579 |
cmos_data[REG_EQUIPMENT_BYTE] |= 0x41; /* 2 drives, ready for boot */ |
580 |
break;
|
581 |
} |
582 |
} |
583 |
#endif /* TARGET_I386 */ |
584 |
|
585 |
/***********************************************************/
|
586 |
/* 8259 pic emulation */
|
587 |
|
588 |
typedef struct PicState { |
589 |
uint8_t last_irr; /* edge detection */
|
590 |
uint8_t irr; /* interrupt request register */
|
591 |
uint8_t imr; /* interrupt mask register */
|
592 |
uint8_t isr; /* interrupt service register */
|
593 |
uint8_t priority_add; /* highest irq priority */
|
594 |
uint8_t irq_base; |
595 |
uint8_t read_reg_select; |
596 |
uint8_t poll; |
597 |
uint8_t special_mask; |
598 |
uint8_t init_state; |
599 |
uint8_t auto_eoi; |
600 |
uint8_t rotate_on_auto_eoi; |
601 |
uint8_t special_fully_nested_mode; |
602 |
uint8_t init4; /* true if 4 byte init */
|
603 |
} PicState; |
604 |
|
605 |
/* 0 is master pic, 1 is slave pic */
|
606 |
PicState pics[2];
|
607 |
int pic_irq_requested;
|
608 |
|
609 |
/* set irq level. If an edge is detected, then the IRR is set to 1 */
|
610 |
static inline void pic_set_irq1(PicState *s, int irq, int level) |
611 |
{ |
612 |
int mask;
|
613 |
mask = 1 << irq;
|
614 |
if (level) {
|
615 |
if ((s->last_irr & mask) == 0) |
616 |
s->irr |= mask; |
617 |
s->last_irr |= mask; |
618 |
} else {
|
619 |
s->last_irr &= ~mask; |
620 |
} |
621 |
} |
622 |
|
623 |
/* return the highest priority found in mask (highest = smallest
|
624 |
number). Return 8 if no irq */
|
625 |
static inline int get_priority(PicState *s, int mask) |
626 |
{ |
627 |
int priority;
|
628 |
if (mask == 0) |
629 |
return 8; |
630 |
priority = 0;
|
631 |
while ((mask & (1 << ((priority + s->priority_add) & 7))) == 0) |
632 |
priority++; |
633 |
return priority;
|
634 |
} |
635 |
|
636 |
/* return the pic wanted interrupt. return -1 if none */
|
637 |
static int pic_get_irq(PicState *s) |
638 |
{ |
639 |
int mask, cur_priority, priority;
|
640 |
|
641 |
mask = s->irr & ~s->imr; |
642 |
priority = get_priority(s, mask); |
643 |
if (priority == 8) |
644 |
return -1; |
645 |
/* compute current priority. If special fully nested mode on the
|
646 |
master, the IRQ coming from the slave is not taken into account
|
647 |
for the priority computation. */
|
648 |
mask = s->isr; |
649 |
if (s->special_fully_nested_mode && s == &pics[0]) |
650 |
mask &= ~(1 << 2); |
651 |
cur_priority = get_priority(s, mask); |
652 |
if (priority < cur_priority) {
|
653 |
/* higher priority found: an irq should be generated */
|
654 |
return (priority + s->priority_add) & 7; |
655 |
} else {
|
656 |
return -1; |
657 |
} |
658 |
} |
659 |
|
660 |
/* raise irq to CPU if necessary. must be called every time the active
|
661 |
irq may change */
|
662 |
void pic_update_irq(void) |
663 |
{ |
664 |
int irq2, irq;
|
665 |
|
666 |
/* first look at slave pic */
|
667 |
irq2 = pic_get_irq(&pics[1]);
|
668 |
if (irq2 >= 0) { |
669 |
/* if irq request by slave pic, signal master PIC */
|
670 |
pic_set_irq1(&pics[0], 2, 1); |
671 |
pic_set_irq1(&pics[0], 2, 0); |
672 |
} |
673 |
/* look at requested irq */
|
674 |
irq = pic_get_irq(&pics[0]);
|
675 |
if (irq >= 0) { |
676 |
if (irq == 2) { |
677 |
/* from slave pic */
|
678 |
pic_irq_requested = 8 + irq2;
|
679 |
} else {
|
680 |
/* from master pic */
|
681 |
pic_irq_requested = irq; |
682 |
} |
683 |
#if defined(DEBUG_PIC)
|
684 |
{ |
685 |
int i;
|
686 |
for(i = 0; i < 2; i++) { |
687 |
printf("pic%d: imr=%x irr=%x padd=%d\n",
|
688 |
i, pics[i].imr, pics[i].irr, pics[i].priority_add); |
689 |
|
690 |
} |
691 |
} |
692 |
printf("pic: cpu_interrupt req=%d\n", pic_irq_requested);
|
693 |
#endif
|
694 |
cpu_interrupt(global_env, CPU_INTERRUPT_HARD); |
695 |
} |
696 |
} |
697 |
|
698 |
#ifdef DEBUG_IRQ_LATENCY
|
699 |
int64_t irq_time[16];
|
700 |
int64_t cpu_get_ticks(void);
|
701 |
#endif
|
702 |
#if defined(DEBUG_PIC)
|
703 |
int irq_level[16]; |
704 |
#endif
|
705 |
|
706 |
void pic_set_irq(int irq, int level) |
707 |
{ |
708 |
#if defined(DEBUG_PIC)
|
709 |
if (level != irq_level[irq]) {
|
710 |
printf("pic_set_irq: irq=%d level=%d\n", irq, level);
|
711 |
irq_level[irq] = level; |
712 |
} |
713 |
#endif
|
714 |
#ifdef DEBUG_IRQ_LATENCY
|
715 |
if (level) {
|
716 |
irq_time[irq] = cpu_get_ticks(); |
717 |
} |
718 |
#endif
|
719 |
pic_set_irq1(&pics[irq >> 3], irq & 7, level); |
720 |
pic_update_irq(); |
721 |
} |
722 |
|
723 |
/* acknowledge interrupt 'irq' */
|
724 |
static inline void pic_intack(PicState *s, int irq) |
725 |
{ |
726 |
if (s->auto_eoi) {
|
727 |
if (s->rotate_on_auto_eoi)
|
728 |
s->priority_add = (irq + 1) & 7; |
729 |
} else {
|
730 |
s->isr |= (1 << irq);
|
731 |
} |
732 |
s->irr &= ~(1 << irq);
|
733 |
} |
734 |
|
735 |
int cpu_x86_get_pic_interrupt(CPUState *env)
|
736 |
{ |
737 |
int irq, irq2, intno;
|
738 |
|
739 |
/* signal the pic that the irq was acked by the CPU */
|
740 |
irq = pic_irq_requested; |
741 |
#ifdef DEBUG_IRQ_LATENCY
|
742 |
printf("IRQ%d latency=%0.3fus\n",
|
743 |
irq, |
744 |
(double)(cpu_get_ticks() - irq_time[irq]) * 1000000.0 / ticks_per_sec); |
745 |
#endif
|
746 |
#if defined(DEBUG_PIC)
|
747 |
printf("pic_interrupt: irq=%d\n", irq);
|
748 |
#endif
|
749 |
|
750 |
if (irq >= 8) { |
751 |
irq2 = irq & 7;
|
752 |
pic_intack(&pics[1], irq2);
|
753 |
irq = 2;
|
754 |
intno = pics[1].irq_base + irq2;
|
755 |
} else {
|
756 |
intno = pics[0].irq_base + irq;
|
757 |
} |
758 |
pic_intack(&pics[0], irq);
|
759 |
return intno;
|
760 |
} |
761 |
|
762 |
void pic_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
|
763 |
{ |
764 |
PicState *s; |
765 |
int priority, cmd, irq;
|
766 |
|
767 |
#ifdef DEBUG_PIC
|
768 |
printf("pic_write: addr=0x%02x val=0x%02x\n", addr, val);
|
769 |
#endif
|
770 |
s = &pics[addr >> 7];
|
771 |
addr &= 1;
|
772 |
if (addr == 0) { |
773 |
if (val & 0x10) { |
774 |
/* init */
|
775 |
memset(s, 0, sizeof(PicState)); |
776 |
s->init_state = 1;
|
777 |
s->init4 = val & 1;
|
778 |
if (val & 0x02) |
779 |
hw_error("single mode not supported");
|
780 |
if (val & 0x08) |
781 |
hw_error("level sensitive irq not supported");
|
782 |
} else if (val & 0x08) { |
783 |
if (val & 0x04) |
784 |
s->poll = 1;
|
785 |
if (val & 0x02) |
786 |
s->read_reg_select = val & 1;
|
787 |
if (val & 0x40) |
788 |
s->special_mask = (val >> 5) & 1; |
789 |
} else {
|
790 |
cmd = val >> 5;
|
791 |
switch(cmd) {
|
792 |
case 0: |
793 |
case 4: |
794 |
s->rotate_on_auto_eoi = cmd >> 2;
|
795 |
break;
|
796 |
case 1: /* end of interrupt */ |
797 |
case 5: |
798 |
priority = get_priority(s, s->isr); |
799 |
if (priority != 8) { |
800 |
irq = (priority + s->priority_add) & 7;
|
801 |
s->isr &= ~(1 << irq);
|
802 |
if (cmd == 5) |
803 |
s->priority_add = (irq + 1) & 7; |
804 |
pic_update_irq(); |
805 |
} |
806 |
break;
|
807 |
case 3: |
808 |
irq = val & 7;
|
809 |
s->isr &= ~(1 << irq);
|
810 |
pic_update_irq(); |
811 |
break;
|
812 |
case 6: |
813 |
s->priority_add = (val + 1) & 7; |
814 |
pic_update_irq(); |
815 |
break;
|
816 |
case 7: |
817 |
irq = val & 7;
|
818 |
s->isr &= ~(1 << irq);
|
819 |
s->priority_add = (irq + 1) & 7; |
820 |
pic_update_irq(); |
821 |
break;
|
822 |
default:
|
823 |
/* no operation */
|
824 |
break;
|
825 |
} |
826 |
} |
827 |
} else {
|
828 |
switch(s->init_state) {
|
829 |
case 0: |
830 |
/* normal mode */
|
831 |
s->imr = val; |
832 |
pic_update_irq(); |
833 |
break;
|
834 |
case 1: |
835 |
s->irq_base = val & 0xf8;
|
836 |
s->init_state = 2;
|
837 |
break;
|
838 |
case 2: |
839 |
if (s->init4) {
|
840 |
s->init_state = 3;
|
841 |
} else {
|
842 |
s->init_state = 0;
|
843 |
} |
844 |
break;
|
845 |
case 3: |
846 |
s->special_fully_nested_mode = (val >> 4) & 1; |
847 |
s->auto_eoi = (val >> 1) & 1; |
848 |
s->init_state = 0;
|
849 |
break;
|
850 |
} |
851 |
} |
852 |
} |
853 |
|
854 |
static uint32_t pic_poll_read (PicState *s, uint32_t addr1)
|
855 |
{ |
856 |
int ret;
|
857 |
|
858 |
ret = pic_get_irq(s); |
859 |
if (ret >= 0) { |
860 |
if (addr1 >> 7) { |
861 |
pics[0].isr &= ~(1 << 2); |
862 |
pics[0].irr &= ~(1 << 2); |
863 |
} |
864 |
s->irr &= ~(1 << ret);
|
865 |
s->isr &= ~(1 << ret);
|
866 |
if (addr1 >> 7 || ret != 2) |
867 |
pic_update_irq(); |
868 |
} else {
|
869 |
ret = 0x07;
|
870 |
pic_update_irq(); |
871 |
} |
872 |
|
873 |
return ret;
|
874 |
} |
875 |
|
876 |
uint32_t pic_ioport_read(CPUState *env, uint32_t addr1) |
877 |
{ |
878 |
PicState *s; |
879 |
unsigned int addr; |
880 |
int ret;
|
881 |
|
882 |
addr = addr1; |
883 |
s = &pics[addr >> 7];
|
884 |
addr &= 1;
|
885 |
if (s->poll) {
|
886 |
ret = pic_poll_read(s, addr1); |
887 |
s->poll = 0;
|
888 |
} else {
|
889 |
if (addr == 0) { |
890 |
if (s->read_reg_select)
|
891 |
ret = s->isr; |
892 |
else
|
893 |
ret = s->irr; |
894 |
} else {
|
895 |
ret = s->imr; |
896 |
} |
897 |
} |
898 |
#ifdef DEBUG_PIC
|
899 |
printf("pic_read: addr=0x%02x val=0x%02x\n", addr1, ret);
|
900 |
#endif
|
901 |
return ret;
|
902 |
} |
903 |
|
904 |
/* memory mapped interrupt status */
|
905 |
uint32_t pic_intack_read(CPUState *env) |
906 |
{ |
907 |
int ret;
|
908 |
|
909 |
ret = pic_poll_read(&pics[0], 0x00); |
910 |
if (ret == 2) |
911 |
ret = pic_poll_read(&pics[1], 0x80) + 8; |
912 |
/* Prepare for ISR read */
|
913 |
pics[0].read_reg_select = 1; |
914 |
|
915 |
return ret;
|
916 |
} |
917 |
|
918 |
void pic_init(void) |
919 |
{ |
920 |
#if defined (TARGET_I386) || defined (TARGET_PPC)
|
921 |
register_ioport_write(0x20, 2, pic_ioport_write, 1); |
922 |
register_ioport_read(0x20, 2, pic_ioport_read, 1); |
923 |
register_ioport_write(0xa0, 2, pic_ioport_write, 1); |
924 |
register_ioport_read(0xa0, 2, pic_ioport_read, 1); |
925 |
#endif
|
926 |
} |
927 |
|
928 |
/***********************************************************/
|
929 |
/* 8253 PIT emulation */
|
930 |
|
931 |
#define PIT_FREQ 1193182 |
932 |
|
933 |
#define RW_STATE_LSB 0 |
934 |
#define RW_STATE_MSB 1 |
935 |
#define RW_STATE_WORD0 2 |
936 |
#define RW_STATE_WORD1 3 |
937 |
#define RW_STATE_LATCHED_WORD0 4 |
938 |
#define RW_STATE_LATCHED_WORD1 5 |
939 |
|
940 |
typedef struct PITChannelState { |
941 |
int count; /* can be 65536 */ |
942 |
uint16_t latched_count; |
943 |
uint8_t rw_state; |
944 |
uint8_t mode; |
945 |
uint8_t bcd; /* not supported */
|
946 |
uint8_t gate; /* timer start */
|
947 |
int64_t count_load_time; |
948 |
int64_t count_last_edge_check_time; |
949 |
} PITChannelState; |
950 |
|
951 |
PITChannelState pit_channels[3];
|
952 |
int speaker_data_on;
|
953 |
int dummy_refresh_clock;
|
954 |
int pit_min_timer_count = 0; |
955 |
|
956 |
|
957 |
#if defined(__powerpc__)
|
958 |
|
959 |
static inline uint32_t get_tbl(void) |
960 |
{ |
961 |
uint32_t tbl; |
962 |
asm volatile("mftb %0" : "=r" (tbl)); |
963 |
return tbl;
|
964 |
} |
965 |
|
966 |
static inline uint32_t get_tbu(void) |
967 |
{ |
968 |
uint32_t tbl; |
969 |
asm volatile("mftbu %0" : "=r" (tbl)); |
970 |
return tbl;
|
971 |
} |
972 |
|
973 |
int64_t cpu_get_real_ticks(void)
|
974 |
{ |
975 |
uint32_t l, h, h1; |
976 |
/* NOTE: we test if wrapping has occurred */
|
977 |
do {
|
978 |
h = get_tbu(); |
979 |
l = get_tbl(); |
980 |
h1 = get_tbu(); |
981 |
} while (h != h1);
|
982 |
return ((int64_t)h << 32) | l; |
983 |
} |
984 |
|
985 |
#elif defined(__i386__)
|
986 |
|
987 |
int64_t cpu_get_real_ticks(void)
|
988 |
{ |
989 |
int64_t val; |
990 |
asm("rdtsc" : "=A" (val)); |
991 |
return val;
|
992 |
} |
993 |
|
994 |
#else
|
995 |
#error unsupported CPU
|
996 |
#endif
|
997 |
|
998 |
static int64_t cpu_ticks_offset;
|
999 |
static int64_t cpu_ticks_last;
|
1000 |
|
1001 |
int64_t cpu_get_ticks(void)
|
1002 |
{ |
1003 |
return cpu_get_real_ticks() + cpu_ticks_offset;
|
1004 |
} |
1005 |
|
1006 |
/* enable cpu_get_ticks() */
|
1007 |
void cpu_enable_ticks(void) |
1008 |
{ |
1009 |
cpu_ticks_offset = cpu_ticks_last - cpu_get_real_ticks(); |
1010 |
} |
1011 |
|
1012 |
/* disable cpu_get_ticks() : the clock is stopped. You must not call
|
1013 |
cpu_get_ticks() after that. */
|
1014 |
void cpu_disable_ticks(void) |
1015 |
{ |
1016 |
cpu_ticks_last = cpu_get_ticks(); |
1017 |
} |
1018 |
|
1019 |
int64_t get_clock(void)
|
1020 |
{ |
1021 |
struct timeval tv;
|
1022 |
gettimeofday(&tv, NULL);
|
1023 |
return tv.tv_sec * 1000000LL + tv.tv_usec; |
1024 |
} |
1025 |
|
1026 |
void cpu_calibrate_ticks(void) |
1027 |
{ |
1028 |
int64_t usec, ticks; |
1029 |
|
1030 |
usec = get_clock(); |
1031 |
ticks = cpu_get_ticks(); |
1032 |
usleep(50 * 1000); |
1033 |
usec = get_clock() - usec; |
1034 |
ticks = cpu_get_ticks() - ticks; |
1035 |
ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec; |
1036 |
} |
1037 |
|
1038 |
/* compute with 96 bit intermediate result: (a*b)/c */
|
1039 |
static uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
|
1040 |
{ |
1041 |
union {
|
1042 |
uint64_t ll; |
1043 |
struct {
|
1044 |
#ifdef WORDS_BIGENDIAN
|
1045 |
uint32_t high, low; |
1046 |
#else
|
1047 |
uint32_t low, high; |
1048 |
#endif
|
1049 |
} l; |
1050 |
} u, res; |
1051 |
uint64_t rl, rh; |
1052 |
|
1053 |
u.ll = a; |
1054 |
rl = (uint64_t)u.l.low * (uint64_t)b; |
1055 |
rh = (uint64_t)u.l.high * (uint64_t)b; |
1056 |
rh += (rl >> 32);
|
1057 |
res.l.high = rh / c; |
1058 |
res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c; |
1059 |
return res.ll;
|
1060 |
} |
1061 |
|
1062 |
static int pit_get_count(PITChannelState *s) |
1063 |
{ |
1064 |
uint64_t d; |
1065 |
int counter;
|
1066 |
|
1067 |
d = muldiv64(cpu_get_ticks() - s->count_load_time, PIT_FREQ, ticks_per_sec); |
1068 |
switch(s->mode) {
|
1069 |
case 0: |
1070 |
case 1: |
1071 |
case 4: |
1072 |
case 5: |
1073 |
counter = (s->count - d) & 0xffff;
|
1074 |
break;
|
1075 |
case 3: |
1076 |
/* XXX: may be incorrect for odd counts */
|
1077 |
counter = s->count - ((2 * d) % s->count);
|
1078 |
break;
|
1079 |
default:
|
1080 |
counter = s->count - (d % s->count); |
1081 |
break;
|
1082 |
} |
1083 |
return counter;
|
1084 |
} |
1085 |
|
1086 |
/* get pit output bit */
|
1087 |
static int pit_get_out(PITChannelState *s) |
1088 |
{ |
1089 |
uint64_t d; |
1090 |
int out;
|
1091 |
|
1092 |
d = muldiv64(cpu_get_ticks() - s->count_load_time, PIT_FREQ, ticks_per_sec); |
1093 |
switch(s->mode) {
|
1094 |
default:
|
1095 |
case 0: |
1096 |
out = (d >= s->count); |
1097 |
break;
|
1098 |
case 1: |
1099 |
out = (d < s->count); |
1100 |
break;
|
1101 |
case 2: |
1102 |
if ((d % s->count) == 0 && d != 0) |
1103 |
out = 1;
|
1104 |
else
|
1105 |
out = 0;
|
1106 |
break;
|
1107 |
case 3: |
1108 |
out = (d % s->count) < ((s->count + 1) >> 1); |
1109 |
break;
|
1110 |
case 4: |
1111 |
case 5: |
1112 |
out = (d == s->count); |
1113 |
break;
|
1114 |
} |
1115 |
return out;
|
1116 |
} |
1117 |
|
1118 |
/* get the number of 0 to 1 transitions we had since we call this
|
1119 |
function */
|
1120 |
/* XXX: maybe better to use ticks precision to avoid getting edges
|
1121 |
twice if checks are done at very small intervals */
|
1122 |
static int pit_get_out_edges(PITChannelState *s) |
1123 |
{ |
1124 |
uint64_t d1, d2; |
1125 |
int64_t ticks; |
1126 |
int ret, v;
|
1127 |
|
1128 |
ticks = cpu_get_ticks(); |
1129 |
d1 = muldiv64(s->count_last_edge_check_time - s->count_load_time, |
1130 |
PIT_FREQ, ticks_per_sec); |
1131 |
d2 = muldiv64(ticks - s->count_load_time, |
1132 |
PIT_FREQ, ticks_per_sec); |
1133 |
s->count_last_edge_check_time = ticks; |
1134 |
switch(s->mode) {
|
1135 |
default:
|
1136 |
case 0: |
1137 |
if (d1 < s->count && d2 >= s->count)
|
1138 |
ret = 1;
|
1139 |
else
|
1140 |
ret = 0;
|
1141 |
break;
|
1142 |
case 1: |
1143 |
ret = 0;
|
1144 |
break;
|
1145 |
case 2: |
1146 |
d1 /= s->count; |
1147 |
d2 /= s->count; |
1148 |
ret = d2 - d1; |
1149 |
break;
|
1150 |
case 3: |
1151 |
v = s->count - ((s->count + 1) >> 1); |
1152 |
d1 = (d1 + v) / s->count; |
1153 |
d2 = (d2 + v) / s->count; |
1154 |
ret = d2 - d1; |
1155 |
break;
|
1156 |
case 4: |
1157 |
case 5: |
1158 |
if (d1 < s->count && d2 >= s->count)
|
1159 |
ret = 1;
|
1160 |
else
|
1161 |
ret = 0;
|
1162 |
break;
|
1163 |
} |
1164 |
return ret;
|
1165 |
} |
1166 |
|
1167 |
/* val must be 0 or 1 */
|
1168 |
static inline void pit_set_gate(PITChannelState *s, int val) |
1169 |
{ |
1170 |
switch(s->mode) {
|
1171 |
default:
|
1172 |
case 0: |
1173 |
case 4: |
1174 |
/* XXX: just disable/enable counting */
|
1175 |
break;
|
1176 |
case 1: |
1177 |
case 5: |
1178 |
if (s->gate < val) {
|
1179 |
/* restart counting on rising edge */
|
1180 |
s->count_load_time = cpu_get_ticks(); |
1181 |
s->count_last_edge_check_time = s->count_load_time; |
1182 |
} |
1183 |
break;
|
1184 |
case 2: |
1185 |
case 3: |
1186 |
if (s->gate < val) {
|
1187 |
/* restart counting on rising edge */
|
1188 |
s->count_load_time = cpu_get_ticks(); |
1189 |
s->count_last_edge_check_time = s->count_load_time; |
1190 |
} |
1191 |
/* XXX: disable/enable counting */
|
1192 |
break;
|
1193 |
} |
1194 |
s->gate = val; |
1195 |
} |
1196 |
|
1197 |
static inline void pit_load_count(PITChannelState *s, int val) |
1198 |
{ |
1199 |
if (val == 0) |
1200 |
val = 0x10000;
|
1201 |
s->count_load_time = cpu_get_ticks(); |
1202 |
s->count_last_edge_check_time = s->count_load_time; |
1203 |
s->count = val; |
1204 |
if (s == &pit_channels[0] && val <= pit_min_timer_count) { |
1205 |
fprintf(stderr, |
1206 |
"\nWARNING: qemu: on your system, accurate timer emulation is impossible if its frequency is more than %d Hz. If using a 2.6 guest Linux kernel, you must patch asm/param.h to change HZ from 1000 to 100.\n\n",
|
1207 |
PIT_FREQ / pit_min_timer_count); |
1208 |
} |
1209 |
} |
1210 |
|
1211 |
void pit_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
|
1212 |
{ |
1213 |
int channel, access;
|
1214 |
PITChannelState *s; |
1215 |
|
1216 |
addr &= 3;
|
1217 |
if (addr == 3) { |
1218 |
channel = val >> 6;
|
1219 |
if (channel == 3) |
1220 |
return;
|
1221 |
s = &pit_channels[channel]; |
1222 |
access = (val >> 4) & 3; |
1223 |
switch(access) {
|
1224 |
case 0: |
1225 |
s->latched_count = pit_get_count(s); |
1226 |
s->rw_state = RW_STATE_LATCHED_WORD0; |
1227 |
break;
|
1228 |
default:
|
1229 |
s->mode = (val >> 1) & 7; |
1230 |
s->bcd = val & 1;
|
1231 |
s->rw_state = access - 1 + RW_STATE_LSB;
|
1232 |
break;
|
1233 |
} |
1234 |
} else {
|
1235 |
s = &pit_channels[addr]; |
1236 |
switch(s->rw_state) {
|
1237 |
case RW_STATE_LSB:
|
1238 |
pit_load_count(s, val); |
1239 |
break;
|
1240 |
case RW_STATE_MSB:
|
1241 |
pit_load_count(s, val << 8);
|
1242 |
break;
|
1243 |
case RW_STATE_WORD0:
|
1244 |
case RW_STATE_WORD1:
|
1245 |
if (s->rw_state & 1) { |
1246 |
pit_load_count(s, (s->latched_count & 0xff) | (val << 8)); |
1247 |
} else {
|
1248 |
s->latched_count = val; |
1249 |
} |
1250 |
s->rw_state ^= 1;
|
1251 |
break;
|
1252 |
} |
1253 |
} |
1254 |
} |
1255 |
|
1256 |
uint32_t pit_ioport_read(CPUState *env, uint32_t addr) |
1257 |
{ |
1258 |
int ret, count;
|
1259 |
PITChannelState *s; |
1260 |
|
1261 |
addr &= 3;
|
1262 |
s = &pit_channels[addr]; |
1263 |
switch(s->rw_state) {
|
1264 |
case RW_STATE_LSB:
|
1265 |
case RW_STATE_MSB:
|
1266 |
case RW_STATE_WORD0:
|
1267 |
case RW_STATE_WORD1:
|
1268 |
count = pit_get_count(s); |
1269 |
if (s->rw_state & 1) |
1270 |
ret = (count >> 8) & 0xff; |
1271 |
else
|
1272 |
ret = count & 0xff;
|
1273 |
if (s->rw_state & 2) |
1274 |
s->rw_state ^= 1;
|
1275 |
break;
|
1276 |
default:
|
1277 |
case RW_STATE_LATCHED_WORD0:
|
1278 |
case RW_STATE_LATCHED_WORD1:
|
1279 |
if (s->rw_state & 1) |
1280 |
ret = s->latched_count >> 8;
|
1281 |
else
|
1282 |
ret = s->latched_count & 0xff;
|
1283 |
s->rw_state ^= 1;
|
1284 |
break;
|
1285 |
} |
1286 |
return ret;
|
1287 |
} |
1288 |
|
1289 |
#if defined (TARGET_I386)
|
1290 |
void speaker_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
|
1291 |
{ |
1292 |
speaker_data_on = (val >> 1) & 1; |
1293 |
pit_set_gate(&pit_channels[2], val & 1); |
1294 |
} |
1295 |
|
1296 |
uint32_t speaker_ioport_read(CPUState *env, uint32_t addr) |
1297 |
{ |
1298 |
int out;
|
1299 |
out = pit_get_out(&pit_channels[2]);
|
1300 |
dummy_refresh_clock ^= 1;
|
1301 |
return (speaker_data_on << 1) | pit_channels[2].gate | (out << 5) | |
1302 |
(dummy_refresh_clock << 4);
|
1303 |
} |
1304 |
#endif
|
1305 |
|
1306 |
void pit_init(void) |
1307 |
{ |
1308 |
PITChannelState *s; |
1309 |
int i;
|
1310 |
|
1311 |
cpu_calibrate_ticks(); |
1312 |
|
1313 |
for(i = 0;i < 3; i++) { |
1314 |
s = &pit_channels[i]; |
1315 |
s->mode = 3;
|
1316 |
s->gate = (i != 2);
|
1317 |
pit_load_count(s, 0);
|
1318 |
} |
1319 |
|
1320 |
register_ioport_write(0x40, 4, pit_ioport_write, 1); |
1321 |
register_ioport_read(0x40, 3, pit_ioport_read, 1); |
1322 |
|
1323 |
#if defined (TARGET_I386)
|
1324 |
register_ioport_read(0x61, 1, speaker_ioport_read, 1); |
1325 |
register_ioport_write(0x61, 1, speaker_ioport_write, 1); |
1326 |
#endif
|
1327 |
} |
1328 |
|
1329 |
/***********************************************************/
|
1330 |
/* serial port emulation */
|
1331 |
|
1332 |
#define UART_IRQ 4 |
1333 |
|
1334 |
#define UART_LCR_DLAB 0x80 /* Divisor latch access bit */ |
1335 |
|
1336 |
#define UART_IER_MSI 0x08 /* Enable Modem status interrupt */ |
1337 |
#define UART_IER_RLSI 0x04 /* Enable receiver line status interrupt */ |
1338 |
#define UART_IER_THRI 0x02 /* Enable Transmitter holding register int. */ |
1339 |
#define UART_IER_RDI 0x01 /* Enable receiver data interrupt */ |
1340 |
|
1341 |
#define UART_IIR_NO_INT 0x01 /* No interrupts pending */ |
1342 |
#define UART_IIR_ID 0x06 /* Mask for the interrupt ID */ |
1343 |
|
1344 |
#define UART_IIR_MSI 0x00 /* Modem status interrupt */ |
1345 |
#define UART_IIR_THRI 0x02 /* Transmitter holding register empty */ |
1346 |
#define UART_IIR_RDI 0x04 /* Receiver data interrupt */ |
1347 |
#define UART_IIR_RLSI 0x06 /* Receiver line status interrupt */ |
1348 |
|
1349 |
/*
|
1350 |
* These are the definitions for the Modem Control Register
|
1351 |
*/
|
1352 |
#define UART_MCR_LOOP 0x10 /* Enable loopback test mode */ |
1353 |
#define UART_MCR_OUT2 0x08 /* Out2 complement */ |
1354 |
#define UART_MCR_OUT1 0x04 /* Out1 complement */ |
1355 |
#define UART_MCR_RTS 0x02 /* RTS complement */ |
1356 |
#define UART_MCR_DTR 0x01 /* DTR complement */ |
1357 |
|
1358 |
/*
|
1359 |
* These are the definitions for the Modem Status Register
|
1360 |
*/
|
1361 |
#define UART_MSR_DCD 0x80 /* Data Carrier Detect */ |
1362 |
#define UART_MSR_RI 0x40 /* Ring Indicator */ |
1363 |
#define UART_MSR_DSR 0x20 /* Data Set Ready */ |
1364 |
#define UART_MSR_CTS 0x10 /* Clear to Send */ |
1365 |
#define UART_MSR_DDCD 0x08 /* Delta DCD */ |
1366 |
#define UART_MSR_TERI 0x04 /* Trailing edge ring indicator */ |
1367 |
#define UART_MSR_DDSR 0x02 /* Delta DSR */ |
1368 |
#define UART_MSR_DCTS 0x01 /* Delta CTS */ |
1369 |
#define UART_MSR_ANY_DELTA 0x0F /* Any of the delta bits! */ |
1370 |
|
1371 |
#define UART_LSR_TEMT 0x40 /* Transmitter empty */ |
1372 |
#define UART_LSR_THRE 0x20 /* Transmit-hold-register empty */ |
1373 |
#define UART_LSR_BI 0x10 /* Break interrupt indicator */ |
1374 |
#define UART_LSR_FE 0x08 /* Frame error indicator */ |
1375 |
#define UART_LSR_PE 0x04 /* Parity error indicator */ |
1376 |
#define UART_LSR_OE 0x02 /* Overrun error indicator */ |
1377 |
#define UART_LSR_DR 0x01 /* Receiver data ready */ |
1378 |
|
1379 |
typedef struct SerialState { |
1380 |
uint8_t divider; |
1381 |
uint8_t rbr; /* receive register */
|
1382 |
uint8_t ier; |
1383 |
uint8_t iir; /* read only */
|
1384 |
uint8_t lcr; |
1385 |
uint8_t mcr; |
1386 |
uint8_t lsr; /* read only */
|
1387 |
uint8_t msr; |
1388 |
uint8_t scr; |
1389 |
/* NOTE: this hidden state is necessary for tx irq generation as
|
1390 |
it can be reset while reading iir */
|
1391 |
int thr_ipending;
|
1392 |
} SerialState; |
1393 |
|
1394 |
SerialState serial_ports[1];
|
1395 |
|
1396 |
void serial_update_irq(void) |
1397 |
{ |
1398 |
SerialState *s = &serial_ports[0];
|
1399 |
|
1400 |
if ((s->lsr & UART_LSR_DR) && (s->ier & UART_IER_RDI)) {
|
1401 |
s->iir = UART_IIR_RDI; |
1402 |
} else if (s->thr_ipending && (s->ier & UART_IER_THRI)) { |
1403 |
s->iir = UART_IIR_THRI; |
1404 |
} else {
|
1405 |
s->iir = UART_IIR_NO_INT; |
1406 |
} |
1407 |
if (s->iir != UART_IIR_NO_INT) {
|
1408 |
pic_set_irq(UART_IRQ, 1);
|
1409 |
} else {
|
1410 |
pic_set_irq(UART_IRQ, 0);
|
1411 |
} |
1412 |
} |
1413 |
|
1414 |
void serial_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
|
1415 |
{ |
1416 |
SerialState *s = &serial_ports[0];
|
1417 |
unsigned char ch; |
1418 |
int ret;
|
1419 |
|
1420 |
addr &= 7;
|
1421 |
#ifdef DEBUG_SERIAL
|
1422 |
printf("serial: write addr=0x%02x val=0x%02x\n", addr, val);
|
1423 |
#endif
|
1424 |
switch(addr) {
|
1425 |
default:
|
1426 |
case 0: |
1427 |
if (s->lcr & UART_LCR_DLAB) {
|
1428 |
s->divider = (s->divider & 0xff00) | val;
|
1429 |
} else {
|
1430 |
s->thr_ipending = 0;
|
1431 |
s->lsr &= ~UART_LSR_THRE; |
1432 |
serial_update_irq(); |
1433 |
|
1434 |
ch = val; |
1435 |
do {
|
1436 |
ret = write(1, &ch, 1); |
1437 |
} while (ret != 1); |
1438 |
s->thr_ipending = 1;
|
1439 |
s->lsr |= UART_LSR_THRE; |
1440 |
s->lsr |= UART_LSR_TEMT; |
1441 |
serial_update_irq(); |
1442 |
} |
1443 |
break;
|
1444 |
case 1: |
1445 |
if (s->lcr & UART_LCR_DLAB) {
|
1446 |
s->divider = (s->divider & 0x00ff) | (val << 8); |
1447 |
} else {
|
1448 |
s->ier = val; |
1449 |
serial_update_irq(); |
1450 |
} |
1451 |
break;
|
1452 |
case 2: |
1453 |
break;
|
1454 |
case 3: |
1455 |
s->lcr = val; |
1456 |
break;
|
1457 |
case 4: |
1458 |
s->mcr = val; |
1459 |
break;
|
1460 |
case 5: |
1461 |
break;
|
1462 |
case 6: |
1463 |
s->msr = val; |
1464 |
break;
|
1465 |
case 7: |
1466 |
s->scr = val; |
1467 |
break;
|
1468 |
} |
1469 |
} |
1470 |
|
1471 |
uint32_t serial_ioport_read(CPUState *env, uint32_t addr) |
1472 |
{ |
1473 |
SerialState *s = &serial_ports[0];
|
1474 |
uint32_t ret; |
1475 |
|
1476 |
addr &= 7;
|
1477 |
switch(addr) {
|
1478 |
default:
|
1479 |
case 0: |
1480 |
if (s->lcr & UART_LCR_DLAB) {
|
1481 |
ret = s->divider & 0xff;
|
1482 |
} else {
|
1483 |
ret = s->rbr; |
1484 |
s->lsr &= ~(UART_LSR_DR | UART_LSR_BI); |
1485 |
serial_update_irq(); |
1486 |
} |
1487 |
break;
|
1488 |
case 1: |
1489 |
if (s->lcr & UART_LCR_DLAB) {
|
1490 |
ret = (s->divider >> 8) & 0xff; |
1491 |
} else {
|
1492 |
ret = s->ier; |
1493 |
} |
1494 |
break;
|
1495 |
case 2: |
1496 |
ret = s->iir; |
1497 |
/* reset THR pending bit */
|
1498 |
if ((ret & 0x7) == UART_IIR_THRI) |
1499 |
s->thr_ipending = 0;
|
1500 |
serial_update_irq(); |
1501 |
break;
|
1502 |
case 3: |
1503 |
ret = s->lcr; |
1504 |
break;
|
1505 |
case 4: |
1506 |
ret = s->mcr; |
1507 |
break;
|
1508 |
case 5: |
1509 |
ret = s->lsr; |
1510 |
break;
|
1511 |
case 6: |
1512 |
if (s->mcr & UART_MCR_LOOP) {
|
1513 |
/* in loopback, the modem output pins are connected to the
|
1514 |
inputs */
|
1515 |
ret = (s->mcr & 0x0c) << 4; |
1516 |
ret |= (s->mcr & 0x02) << 3; |
1517 |
ret |= (s->mcr & 0x01) << 5; |
1518 |
} else {
|
1519 |
ret = s->msr; |
1520 |
} |
1521 |
break;
|
1522 |
case 7: |
1523 |
ret = s->scr; |
1524 |
break;
|
1525 |
} |
1526 |
#ifdef DEBUG_SERIAL
|
1527 |
printf("serial: read addr=0x%02x val=0x%02x\n", addr, ret);
|
1528 |
#endif
|
1529 |
return ret;
|
1530 |
} |
1531 |
|
1532 |
#define TERM_ESCAPE 0x01 /* ctrl-a is used for escape */ |
1533 |
static int term_got_escape, term_command; |
1534 |
static unsigned char term_cmd_buf[128]; |
1535 |
|
1536 |
typedef struct term_cmd_t { |
1537 |
const unsigned char *name; |
1538 |
void (*handler)(unsigned char *params); |
1539 |
} term_cmd_t; |
1540 |
|
1541 |
static void do_change_cdrom (unsigned char *params); |
1542 |
static void do_change_fd0 (unsigned char *params); |
1543 |
static void do_change_fd1 (unsigned char *params); |
1544 |
|
1545 |
static term_cmd_t term_cmds[] = {
|
1546 |
{ "changecd", &do_change_cdrom, },
|
1547 |
{ "changefd0", &do_change_fd0, },
|
1548 |
{ "changefd1", &do_change_fd1, },
|
1549 |
{ NULL, NULL, }, |
1550 |
}; |
1551 |
|
1552 |
void term_print_help(void) |
1553 |
{ |
1554 |
printf("\n"
|
1555 |
"C-a h print this help\n"
|
1556 |
"C-a x exit emulatior\n"
|
1557 |
"C-a d switch on/off debug log\n"
|
1558 |
"C-a s save disk data back to file (if -snapshot)\n"
|
1559 |
"C-a b send break (magic sysrq)\n"
|
1560 |
"C-a c send qemu internal command\n"
|
1561 |
"C-a C-a send C-a\n"
|
1562 |
); |
1563 |
} |
1564 |
|
1565 |
static void do_change_cdrom (unsigned char *params) |
1566 |
{ |
1567 |
/* Dunno how to do it... */
|
1568 |
} |
1569 |
|
1570 |
static void do_change_fd (int fd, unsigned char *params) |
1571 |
{ |
1572 |
unsigned char *name_start, *name_end, *ros; |
1573 |
int ro;
|
1574 |
|
1575 |
for (name_start = params;
|
1576 |
isspace(*name_start); name_start++) |
1577 |
continue;
|
1578 |
if (*name_start == '\0') |
1579 |
return;
|
1580 |
for (name_end = name_start;
|
1581 |
!isspace(*name_end) && *name_end != '\0'; name_end++)
|
1582 |
continue;
|
1583 |
for (ros = name_end + 1; isspace(*ros); ros++) |
1584 |
continue;
|
1585 |
if (ros[0] == 'r' && ros[1] == 'o') |
1586 |
ro = 1;
|
1587 |
else
|
1588 |
ro = 0;
|
1589 |
*name_end = '\0';
|
1590 |
printf("Change fd %d to %s (%s)\n", fd, name_start, params);
|
1591 |
fdctrl_disk_change(fd, name_start, ro); |
1592 |
} |
1593 |
|
1594 |
static void do_change_fd0 (unsigned char *params) |
1595 |
{ |
1596 |
do_change_fd(0, params);
|
1597 |
} |
1598 |
|
1599 |
static void do_change_fd1 (unsigned char *params) |
1600 |
{ |
1601 |
do_change_fd(1, params);
|
1602 |
} |
1603 |
|
1604 |
static void serial_treat_command () |
1605 |
{ |
1606 |
unsigned char *cmd_start, *cmd_end; |
1607 |
int i;
|
1608 |
|
1609 |
for (cmd_start = term_cmd_buf; isspace(*cmd_start); cmd_start++)
|
1610 |
continue;
|
1611 |
for (cmd_end = cmd_start;
|
1612 |
!isspace(*cmd_end) && *cmd_end != '\0'; cmd_end++)
|
1613 |
continue;
|
1614 |
for (i = 0; term_cmds[i].name != NULL; i++) { |
1615 |
if (strlen(term_cmds[i].name) == (cmd_end - cmd_start) &&
|
1616 |
memcmp(term_cmds[i].name, cmd_start, cmd_end - cmd_start) == 0) {
|
1617 |
(*term_cmds[i].handler)(cmd_end + 1);
|
1618 |
return;
|
1619 |
} |
1620 |
} |
1621 |
*cmd_end = '\0';
|
1622 |
printf("Unknown term command: %s\n", cmd_start);
|
1623 |
} |
1624 |
|
1625 |
extern FILE *logfile;
|
1626 |
|
1627 |
/* called when a char is received */
|
1628 |
void serial_received_byte(SerialState *s, int ch) |
1629 |
{ |
1630 |
if (term_command) {
|
1631 |
if (ch == '\n' || ch == '\r' || term_command == 127) { |
1632 |
printf("\n");
|
1633 |
serial_treat_command(); |
1634 |
term_command = 0;
|
1635 |
} else {
|
1636 |
if (ch == 0x7F || ch == 0x08) { |
1637 |
if (term_command > 1) { |
1638 |
term_cmd_buf[--term_command - 1] = '\0'; |
1639 |
printf("\r "
|
1640 |
" ");
|
1641 |
printf("\r> %s", term_cmd_buf);
|
1642 |
} |
1643 |
} else if (ch > 0x1f) { |
1644 |
term_cmd_buf[term_command++ - 1] = ch;
|
1645 |
term_cmd_buf[term_command - 1] = '\0'; |
1646 |
printf("\r> %s", term_cmd_buf);
|
1647 |
} |
1648 |
fflush(stdout); |
1649 |
} |
1650 |
} else if (term_got_escape) { |
1651 |
term_got_escape = 0;
|
1652 |
switch(ch) {
|
1653 |
case 'h': |
1654 |
term_print_help(); |
1655 |
break;
|
1656 |
case 'x': |
1657 |
exit(0);
|
1658 |
break;
|
1659 |
case 's': |
1660 |
{ |
1661 |
int i;
|
1662 |
for (i = 0; i < MAX_DISKS; i++) { |
1663 |
if (bs_table[i])
|
1664 |
bdrv_commit(bs_table[i]); |
1665 |
} |
1666 |
} |
1667 |
break;
|
1668 |
case 'b': |
1669 |
/* send break */
|
1670 |
s->rbr = 0;
|
1671 |
s->lsr |= UART_LSR_BI | UART_LSR_DR; |
1672 |
serial_update_irq(); |
1673 |
break;
|
1674 |
case 'c': |
1675 |
printf("> ");
|
1676 |
fflush(stdout); |
1677 |
term_command = 1;
|
1678 |
break;
|
1679 |
case 'd': |
1680 |
cpu_set_log(CPU_LOG_ALL); |
1681 |
break;
|
1682 |
case TERM_ESCAPE:
|
1683 |
goto send_char;
|
1684 |
} |
1685 |
} else if (ch == TERM_ESCAPE) { |
1686 |
term_got_escape = 1;
|
1687 |
} else {
|
1688 |
send_char:
|
1689 |
s->rbr = ch; |
1690 |
s->lsr |= UART_LSR_DR; |
1691 |
serial_update_irq(); |
1692 |
} |
1693 |
} |
1694 |
|
1695 |
void serial_init(void) |
1696 |
{ |
1697 |
SerialState *s = &serial_ports[0];
|
1698 |
|
1699 |
s->lsr = UART_LSR_TEMT | UART_LSR_THRE; |
1700 |
s->iir = UART_IIR_NO_INT; |
1701 |
|
1702 |
#if defined(TARGET_I386) || defined (TARGET_PPC)
|
1703 |
register_ioport_write(0x3f8, 8, serial_ioport_write, 1); |
1704 |
register_ioport_read(0x3f8, 8, serial_ioport_read, 1); |
1705 |
#endif
|
1706 |
} |
1707 |
|
1708 |
/***********************************************************/
|
1709 |
/* ne2000 emulation */
|
1710 |
|
1711 |
#if defined (TARGET_I386)
|
1712 |
#define NE2000_IOPORT 0x300 |
1713 |
#define NE2000_IRQ 9 |
1714 |
|
1715 |
#define MAX_ETH_FRAME_SIZE 1514 |
1716 |
|
1717 |
#define E8390_CMD 0x00 /* The command register (for all pages) */ |
1718 |
/* Page 0 register offsets. */
|
1719 |
#define EN0_CLDALO 0x01 /* Low byte of current local dma addr RD */ |
1720 |
#define EN0_STARTPG 0x01 /* Starting page of ring bfr WR */ |
1721 |
#define EN0_CLDAHI 0x02 /* High byte of current local dma addr RD */ |
1722 |
#define EN0_STOPPG 0x02 /* Ending page +1 of ring bfr WR */ |
1723 |
#define EN0_BOUNDARY 0x03 /* Boundary page of ring bfr RD WR */ |
1724 |
#define EN0_TSR 0x04 /* Transmit status reg RD */ |
1725 |
#define EN0_TPSR 0x04 /* Transmit starting page WR */ |
1726 |
#define EN0_NCR 0x05 /* Number of collision reg RD */ |
1727 |
#define EN0_TCNTLO 0x05 /* Low byte of tx byte count WR */ |
1728 |
#define EN0_FIFO 0x06 /* FIFO RD */ |
1729 |
#define EN0_TCNTHI 0x06 /* High byte of tx byte count WR */ |
1730 |
#define EN0_ISR 0x07 /* Interrupt status reg RD WR */ |
1731 |
#define EN0_CRDALO 0x08 /* low byte of current remote dma address RD */ |
1732 |
#define EN0_RSARLO 0x08 /* Remote start address reg 0 */ |
1733 |
#define EN0_CRDAHI 0x09 /* high byte, current remote dma address RD */ |
1734 |
#define EN0_RSARHI 0x09 /* Remote start address reg 1 */ |
1735 |
#define EN0_RCNTLO 0x0a /* Remote byte count reg WR */ |
1736 |
#define EN0_RCNTHI 0x0b /* Remote byte count reg WR */ |
1737 |
#define EN0_RSR 0x0c /* rx status reg RD */ |
1738 |
#define EN0_RXCR 0x0c /* RX configuration reg WR */ |
1739 |
#define EN0_TXCR 0x0d /* TX configuration reg WR */ |
1740 |
#define EN0_COUNTER0 0x0d /* Rcv alignment error counter RD */ |
1741 |
#define EN0_DCFG 0x0e /* Data configuration reg WR */ |
1742 |
#define EN0_COUNTER1 0x0e /* Rcv CRC error counter RD */ |
1743 |
#define EN0_IMR 0x0f /* Interrupt mask reg WR */ |
1744 |
#define EN0_COUNTER2 0x0f /* Rcv missed frame error counter RD */ |
1745 |
|
1746 |
#define EN1_PHYS 0x11 |
1747 |
#define EN1_CURPAG 0x17 |
1748 |
#define EN1_MULT 0x18 |
1749 |
|
1750 |
/* Register accessed at EN_CMD, the 8390 base addr. */
|
1751 |
#define E8390_STOP 0x01 /* Stop and reset the chip */ |
1752 |
#define E8390_START 0x02 /* Start the chip, clear reset */ |
1753 |
#define E8390_TRANS 0x04 /* Transmit a frame */ |
1754 |
#define E8390_RREAD 0x08 /* Remote read */ |
1755 |
#define E8390_RWRITE 0x10 /* Remote write */ |
1756 |
#define E8390_NODMA 0x20 /* Remote DMA */ |
1757 |
#define E8390_PAGE0 0x00 /* Select page chip registers */ |
1758 |
#define E8390_PAGE1 0x40 /* using the two high-order bits */ |
1759 |
#define E8390_PAGE2 0x80 /* Page 3 is invalid. */ |
1760 |
|
1761 |
/* Bits in EN0_ISR - Interrupt status register */
|
1762 |
#define ENISR_RX 0x01 /* Receiver, no error */ |
1763 |
#define ENISR_TX 0x02 /* Transmitter, no error */ |
1764 |
#define ENISR_RX_ERR 0x04 /* Receiver, with error */ |
1765 |
#define ENISR_TX_ERR 0x08 /* Transmitter, with error */ |
1766 |
#define ENISR_OVER 0x10 /* Receiver overwrote the ring */ |
1767 |
#define ENISR_COUNTERS 0x20 /* Counters need emptying */ |
1768 |
#define ENISR_RDC 0x40 /* remote dma complete */ |
1769 |
#define ENISR_RESET 0x80 /* Reset completed */ |
1770 |
#define ENISR_ALL 0x3f /* Interrupts we will enable */ |
1771 |
|
1772 |
/* Bits in received packet status byte and EN0_RSR*/
|
1773 |
#define ENRSR_RXOK 0x01 /* Received a good packet */ |
1774 |
#define ENRSR_CRC 0x02 /* CRC error */ |
1775 |
#define ENRSR_FAE 0x04 /* frame alignment error */ |
1776 |
#define ENRSR_FO 0x08 /* FIFO overrun */ |
1777 |
#define ENRSR_MPA 0x10 /* missed pkt */ |
1778 |
#define ENRSR_PHY 0x20 /* physical/multicast address */ |
1779 |
#define ENRSR_DIS 0x40 /* receiver disable. set in monitor mode */ |
1780 |
#define ENRSR_DEF 0x80 /* deferring */ |
1781 |
|
1782 |
/* Transmitted packet status, EN0_TSR. */
|
1783 |
#define ENTSR_PTX 0x01 /* Packet transmitted without error */ |
1784 |
#define ENTSR_ND 0x02 /* The transmit wasn't deferred. */ |
1785 |
#define ENTSR_COL 0x04 /* The transmit collided at least once. */ |
1786 |
#define ENTSR_ABT 0x08 /* The transmit collided 16 times, and was deferred. */ |
1787 |
#define ENTSR_CRS 0x10 /* The carrier sense was lost. */ |
1788 |
#define ENTSR_FU 0x20 /* A "FIFO underrun" occurred during transmit. */ |
1789 |
#define ENTSR_CDH 0x40 /* The collision detect "heartbeat" signal was lost. */ |
1790 |
#define ENTSR_OWC 0x80 /* There was an out-of-window collision. */ |
1791 |
|
1792 |
#define NE2000_MEM_SIZE 32768 |
1793 |
|
1794 |
typedef struct NE2000State { |
1795 |
uint8_t cmd; |
1796 |
uint32_t start; |
1797 |
uint32_t stop; |
1798 |
uint8_t boundary; |
1799 |
uint8_t tsr; |
1800 |
uint8_t tpsr; |
1801 |
uint16_t tcnt; |
1802 |
uint16_t rcnt; |
1803 |
uint32_t rsar; |
1804 |
uint8_t isr; |
1805 |
uint8_t dcfg; |
1806 |
uint8_t imr; |
1807 |
uint8_t phys[6]; /* mac address */ |
1808 |
uint8_t curpag; |
1809 |
uint8_t mult[8]; /* multicast mask array */ |
1810 |
uint8_t mem[NE2000_MEM_SIZE]; |
1811 |
} NE2000State; |
1812 |
|
1813 |
NE2000State ne2000_state; |
1814 |
int net_fd = -1; |
1815 |
char network_script[1024]; |
1816 |
|
1817 |
void ne2000_reset(void) |
1818 |
{ |
1819 |
NE2000State *s = &ne2000_state; |
1820 |
int i;
|
1821 |
|
1822 |
s->isr = ENISR_RESET; |
1823 |
s->mem[0] = 0x52; |
1824 |
s->mem[1] = 0x54; |
1825 |
s->mem[2] = 0x00; |
1826 |
s->mem[3] = 0x12; |
1827 |
s->mem[4] = 0x34; |
1828 |
s->mem[5] = 0x56; |
1829 |
s->mem[14] = 0x57; |
1830 |
s->mem[15] = 0x57; |
1831 |
|
1832 |
/* duplicate prom data */
|
1833 |
for(i = 15;i >= 0; i--) { |
1834 |
s->mem[2 * i] = s->mem[i];
|
1835 |
s->mem[2 * i + 1] = s->mem[i]; |
1836 |
} |
1837 |
} |
1838 |
|
1839 |
void ne2000_update_irq(NE2000State *s)
|
1840 |
{ |
1841 |
int isr;
|
1842 |
isr = s->isr & s->imr; |
1843 |
if (isr)
|
1844 |
pic_set_irq(NE2000_IRQ, 1);
|
1845 |
else
|
1846 |
pic_set_irq(NE2000_IRQ, 0);
|
1847 |
} |
1848 |
|
1849 |
int net_init(void) |
1850 |
{ |
1851 |
struct ifreq ifr;
|
1852 |
int fd, ret, pid, status;
|
1853 |
|
1854 |
fd = open("/dev/net/tun", O_RDWR);
|
1855 |
if (fd < 0) { |
1856 |
fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
|
1857 |
return -1; |
1858 |
} |
1859 |
memset(&ifr, 0, sizeof(ifr)); |
1860 |
ifr.ifr_flags = IFF_TAP | IFF_NO_PI; |
1861 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
|
1862 |
ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
|
1863 |
if (ret != 0) { |
1864 |
fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
|
1865 |
close(fd); |
1866 |
return -1; |
1867 |
} |
1868 |
printf("Connected to host network interface: %s\n", ifr.ifr_name);
|
1869 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
1870 |
net_fd = fd; |
1871 |
|
1872 |
/* try to launch network init script */
|
1873 |
pid = fork(); |
1874 |
if (pid >= 0) { |
1875 |
if (pid == 0) { |
1876 |
execl(network_script, network_script, ifr.ifr_name, NULL);
|
1877 |
exit(1);
|
1878 |
} |
1879 |
while (waitpid(pid, &status, 0) != pid); |
1880 |
if (!WIFEXITED(status) ||
|
1881 |
WEXITSTATUS(status) != 0) {
|
1882 |
fprintf(stderr, "%s: could not launch network script for '%s'\n",
|
1883 |
network_script, ifr.ifr_name); |
1884 |
} |
1885 |
} |
1886 |
return 0; |
1887 |
} |
1888 |
|
1889 |
void net_send_packet(NE2000State *s, const uint8_t *buf, int size) |
1890 |
{ |
1891 |
#ifdef DEBUG_NE2000
|
1892 |
printf("NE2000: sending packet size=%d\n", size);
|
1893 |
#endif
|
1894 |
write(net_fd, buf, size); |
1895 |
} |
1896 |
|
1897 |
/* return true if the NE2000 can receive more data */
|
1898 |
int ne2000_can_receive(NE2000State *s)
|
1899 |
{ |
1900 |
int avail, index, boundary;
|
1901 |
|
1902 |
if (s->cmd & E8390_STOP)
|
1903 |
return 0; |
1904 |
index = s->curpag << 8;
|
1905 |
boundary = s->boundary << 8;
|
1906 |
if (index < boundary)
|
1907 |
avail = boundary - index; |
1908 |
else
|
1909 |
avail = (s->stop - s->start) - (index - boundary); |
1910 |
if (avail < (MAX_ETH_FRAME_SIZE + 4)) |
1911 |
return 0; |
1912 |
return 1; |
1913 |
} |
1914 |
|
1915 |
void ne2000_receive(NE2000State *s, uint8_t *buf, int size) |
1916 |
{ |
1917 |
uint8_t *p; |
1918 |
int total_len, next, avail, len, index;
|
1919 |
|
1920 |
#if defined(DEBUG_NE2000)
|
1921 |
printf("NE2000: received len=%d\n", size);
|
1922 |
#endif
|
1923 |
|
1924 |
index = s->curpag << 8;
|
1925 |
/* 4 bytes for header */
|
1926 |
total_len = size + 4;
|
1927 |
/* address for next packet (4 bytes for CRC) */
|
1928 |
next = index + ((total_len + 4 + 255) & ~0xff); |
1929 |
if (next >= s->stop)
|
1930 |
next -= (s->stop - s->start); |
1931 |
/* prepare packet header */
|
1932 |
p = s->mem + index; |
1933 |
p[0] = ENRSR_RXOK; /* receive status */ |
1934 |
p[1] = next >> 8; |
1935 |
p[2] = total_len;
|
1936 |
p[3] = total_len >> 8; |
1937 |
index += 4;
|
1938 |
|
1939 |
/* write packet data */
|
1940 |
while (size > 0) { |
1941 |
avail = s->stop - index; |
1942 |
len = size; |
1943 |
if (len > avail)
|
1944 |
len = avail; |
1945 |
memcpy(s->mem + index, buf, len); |
1946 |
buf += len; |
1947 |
index += len; |
1948 |
if (index == s->stop)
|
1949 |
index = s->start; |
1950 |
size -= len; |
1951 |
} |
1952 |
s->curpag = next >> 8;
|
1953 |
|
1954 |
/* now we can signal we have receive something */
|
1955 |
s->isr |= ENISR_RX; |
1956 |
ne2000_update_irq(s); |
1957 |
} |
1958 |
|
1959 |
void ne2000_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
|
1960 |
{ |
1961 |
NE2000State *s = &ne2000_state; |
1962 |
int offset, page;
|
1963 |
|
1964 |
addr &= 0xf;
|
1965 |
#ifdef DEBUG_NE2000
|
1966 |
printf("NE2000: write addr=0x%x val=0x%02x\n", addr, val);
|
1967 |
#endif
|
1968 |
if (addr == E8390_CMD) {
|
1969 |
/* control register */
|
1970 |
s->cmd = val; |
1971 |
if (val & E8390_START) {
|
1972 |
/* test specific case: zero length transfert */
|
1973 |
if ((val & (E8390_RREAD | E8390_RWRITE)) &&
|
1974 |
s->rcnt == 0) {
|
1975 |
s->isr |= ENISR_RDC; |
1976 |
ne2000_update_irq(s); |
1977 |
} |
1978 |
if (val & E8390_TRANS) {
|
1979 |
net_send_packet(s, s->mem + (s->tpsr << 8), s->tcnt);
|
1980 |
/* signal end of transfert */
|
1981 |
s->tsr = ENTSR_PTX; |
1982 |
s->isr |= ENISR_TX; |
1983 |
ne2000_update_irq(s); |
1984 |
} |
1985 |
} |
1986 |
} else {
|
1987 |
page = s->cmd >> 6;
|
1988 |
offset = addr | (page << 4);
|
1989 |
switch(offset) {
|
1990 |
case EN0_STARTPG:
|
1991 |
s->start = val << 8;
|
1992 |
break;
|
1993 |
case EN0_STOPPG:
|
1994 |
s->stop = val << 8;
|
1995 |
break;
|
1996 |
case EN0_BOUNDARY:
|
1997 |
s->boundary = val; |
1998 |
break;
|
1999 |
case EN0_IMR:
|
2000 |
s->imr = val; |
2001 |
ne2000_update_irq(s); |
2002 |
break;
|
2003 |
case EN0_TPSR:
|
2004 |
s->tpsr = val; |
2005 |
break;
|
2006 |
case EN0_TCNTLO:
|
2007 |
s->tcnt = (s->tcnt & 0xff00) | val;
|
2008 |
break;
|
2009 |
case EN0_TCNTHI:
|
2010 |
s->tcnt = (s->tcnt & 0x00ff) | (val << 8); |
2011 |
break;
|
2012 |
case EN0_RSARLO:
|
2013 |
s->rsar = (s->rsar & 0xff00) | val;
|
2014 |
break;
|
2015 |
case EN0_RSARHI:
|
2016 |
s->rsar = (s->rsar & 0x00ff) | (val << 8); |
2017 |
break;
|
2018 |
case EN0_RCNTLO:
|
2019 |
s->rcnt = (s->rcnt & 0xff00) | val;
|
2020 |
break;
|
2021 |
case EN0_RCNTHI:
|
2022 |
s->rcnt = (s->rcnt & 0x00ff) | (val << 8); |
2023 |
break;
|
2024 |
case EN0_DCFG:
|
2025 |
s->dcfg = val; |
2026 |
break;
|
2027 |
case EN0_ISR:
|
2028 |
s->isr &= ~val; |
2029 |
ne2000_update_irq(s); |
2030 |
break;
|
2031 |
case EN1_PHYS ... EN1_PHYS + 5: |
2032 |
s->phys[offset - EN1_PHYS] = val; |
2033 |
break;
|
2034 |
case EN1_CURPAG:
|
2035 |
s->curpag = val; |
2036 |
break;
|
2037 |
case EN1_MULT ... EN1_MULT + 7: |
2038 |
s->mult[offset - EN1_MULT] = val; |
2039 |
break;
|
2040 |
} |
2041 |
} |
2042 |
} |
2043 |
|
2044 |
uint32_t ne2000_ioport_read(CPUState *env, uint32_t addr) |
2045 |
{ |
2046 |
NE2000State *s = &ne2000_state; |
2047 |
int offset, page, ret;
|
2048 |
|
2049 |
addr &= 0xf;
|
2050 |
if (addr == E8390_CMD) {
|
2051 |
ret = s->cmd; |
2052 |
} else {
|
2053 |
page = s->cmd >> 6;
|
2054 |
offset = addr | (page << 4);
|
2055 |
switch(offset) {
|
2056 |
case EN0_TSR:
|
2057 |
ret = s->tsr; |
2058 |
break;
|
2059 |
case EN0_BOUNDARY:
|
2060 |
ret = s->boundary; |
2061 |
break;
|
2062 |
case EN0_ISR:
|
2063 |
ret = s->isr; |
2064 |
break;
|
2065 |
case EN1_PHYS ... EN1_PHYS + 5: |
2066 |
ret = s->phys[offset - EN1_PHYS]; |
2067 |
break;
|
2068 |
case EN1_CURPAG:
|
2069 |
ret = s->curpag; |
2070 |
break;
|
2071 |
case EN1_MULT ... EN1_MULT + 7: |
2072 |
ret = s->mult[offset - EN1_MULT]; |
2073 |
break;
|
2074 |
default:
|
2075 |
ret = 0x00;
|
2076 |
break;
|
2077 |
} |
2078 |
} |
2079 |
#ifdef DEBUG_NE2000
|
2080 |
printf("NE2000: read addr=0x%x val=%02x\n", addr, ret);
|
2081 |
#endif
|
2082 |
return ret;
|
2083 |
} |
2084 |
|
2085 |
void ne2000_asic_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
|
2086 |
{ |
2087 |
NE2000State *s = &ne2000_state; |
2088 |
uint8_t *p; |
2089 |
|
2090 |
#ifdef DEBUG_NE2000
|
2091 |
printf("NE2000: asic write val=0x%04x\n", val);
|
2092 |
#endif
|
2093 |
p = s->mem + s->rsar; |
2094 |
if (s->dcfg & 0x01) { |
2095 |
/* 16 bit access */
|
2096 |
p[0] = val;
|
2097 |
p[1] = val >> 8; |
2098 |
s->rsar += 2;
|
2099 |
s->rcnt -= 2;
|
2100 |
} else {
|
2101 |
/* 8 bit access */
|
2102 |
p[0] = val;
|
2103 |
s->rsar++; |
2104 |
s->rcnt--; |
2105 |
} |
2106 |
/* wrap */
|
2107 |
if (s->rsar == s->stop)
|
2108 |
s->rsar = s->start; |
2109 |
if (s->rcnt == 0) { |
2110 |
/* signal end of transfert */
|
2111 |
s->isr |= ENISR_RDC; |
2112 |
ne2000_update_irq(s); |
2113 |
} |
2114 |
} |
2115 |
|
2116 |
uint32_t ne2000_asic_ioport_read(CPUState *env, uint32_t addr) |
2117 |
{ |
2118 |
NE2000State *s = &ne2000_state; |
2119 |
uint8_t *p; |
2120 |
int ret;
|
2121 |
|
2122 |
p = s->mem + s->rsar; |
2123 |
if (s->dcfg & 0x01) { |
2124 |
/* 16 bit access */
|
2125 |
ret = p[0] | (p[1] << 8); |
2126 |
s->rsar += 2;
|
2127 |
s->rcnt -= 2;
|
2128 |
} else {
|
2129 |
/* 8 bit access */
|
2130 |
ret = p[0];
|
2131 |
s->rsar++; |
2132 |
s->rcnt--; |
2133 |
} |
2134 |
/* wrap */
|
2135 |
if (s->rsar == s->stop)
|
2136 |
s->rsar = s->start; |
2137 |
if (s->rcnt == 0) { |
2138 |
/* signal end of transfert */
|
2139 |
s->isr |= ENISR_RDC; |
2140 |
ne2000_update_irq(s); |
2141 |
} |
2142 |
#ifdef DEBUG_NE2000
|
2143 |
printf("NE2000: asic read val=0x%04x\n", ret);
|
2144 |
#endif
|
2145 |
return ret;
|
2146 |
} |
2147 |
|
2148 |
void ne2000_reset_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
|
2149 |
{ |
2150 |
/* nothing to do (end of reset pulse) */
|
2151 |
} |
2152 |
|
2153 |
uint32_t ne2000_reset_ioport_read(CPUState *env, uint32_t addr) |
2154 |
{ |
2155 |
ne2000_reset(); |
2156 |
return 0; |
2157 |
} |
2158 |
|
2159 |
void ne2000_init(void) |
2160 |
{ |
2161 |
register_ioport_write(NE2000_IOPORT, 16, ne2000_ioport_write, 1); |
2162 |
register_ioport_read(NE2000_IOPORT, 16, ne2000_ioport_read, 1); |
2163 |
|
2164 |
register_ioport_write(NE2000_IOPORT + 0x10, 1, ne2000_asic_ioport_write, 1); |
2165 |
register_ioport_read(NE2000_IOPORT + 0x10, 1, ne2000_asic_ioport_read, 1); |
2166 |
register_ioport_write(NE2000_IOPORT + 0x10, 2, ne2000_asic_ioport_write, 2); |
2167 |
register_ioport_read(NE2000_IOPORT + 0x10, 2, ne2000_asic_ioport_read, 2); |
2168 |
|
2169 |
register_ioport_write(NE2000_IOPORT + 0x1f, 1, ne2000_reset_ioport_write, 1); |
2170 |
register_ioport_read(NE2000_IOPORT + 0x1f, 1, ne2000_reset_ioport_read, 1); |
2171 |
ne2000_reset(); |
2172 |
} |
2173 |
#endif
|
2174 |
|
2175 |
/***********************************************************/
|
2176 |
/* PC floppy disk controler emulation glue */
|
2177 |
#define PC_FDC_DMA 0x2 |
2178 |
#define PC_FDC_IRQ 0x6 |
2179 |
#define PC_FDC_BASE 0x3F0 |
2180 |
|
2181 |
static void fdctrl_register (unsigned char **disknames, int ro, |
2182 |
char boot_device)
|
2183 |
{ |
2184 |
int i;
|
2185 |
|
2186 |
fdctrl_init(PC_FDC_IRQ, PC_FDC_DMA, 0, PC_FDC_BASE, boot_device);
|
2187 |
for (i = 0; i < MAX_FD; i++) { |
2188 |
if (disknames[i] != NULL) |
2189 |
fdctrl_disk_change(i, disknames[i], ro); |
2190 |
} |
2191 |
} |
2192 |
|
2193 |
/***********************************************************/
|
2194 |
/* keyboard emulation */
|
2195 |
|
2196 |
/* Keyboard Controller Commands */
|
2197 |
#define KBD_CCMD_READ_MODE 0x20 /* Read mode bits */ |
2198 |
#define KBD_CCMD_WRITE_MODE 0x60 /* Write mode bits */ |
2199 |
#define KBD_CCMD_GET_VERSION 0xA1 /* Get controller version */ |
2200 |
#define KBD_CCMD_MOUSE_DISABLE 0xA7 /* Disable mouse interface */ |
2201 |
#define KBD_CCMD_MOUSE_ENABLE 0xA8 /* Enable mouse interface */ |
2202 |
#define KBD_CCMD_TEST_MOUSE 0xA9 /* Mouse interface test */ |
2203 |
#define KBD_CCMD_SELF_TEST 0xAA /* Controller self test */ |
2204 |
#define KBD_CCMD_KBD_TEST 0xAB /* Keyboard interface test */ |
2205 |
#define KBD_CCMD_KBD_DISABLE 0xAD /* Keyboard interface disable */ |
2206 |
#define KBD_CCMD_KBD_ENABLE 0xAE /* Keyboard interface enable */ |
2207 |
#define KBD_CCMD_READ_INPORT 0xC0 /* read input port */ |
2208 |
#define KBD_CCMD_READ_OUTPORT 0xD0 /* read output port */ |
2209 |
#define KBD_CCMD_WRITE_OUTPORT 0xD1 /* write output port */ |
2210 |
#define KBD_CCMD_WRITE_OBUF 0xD2 |
2211 |
#define KBD_CCMD_WRITE_AUX_OBUF 0xD3 /* Write to output buffer as if |
2212 |
initiated by the auxiliary device */
|
2213 |
#define KBD_CCMD_WRITE_MOUSE 0xD4 /* Write the following byte to the mouse */ |
2214 |
#define KBD_CCMD_DISABLE_A20 0xDD /* HP vectra only ? */ |
2215 |
#define KBD_CCMD_ENABLE_A20 0xDF /* HP vectra only ? */ |
2216 |
#define KBD_CCMD_RESET 0xFE |
2217 |
|
2218 |
/* Keyboard Commands */
|
2219 |
#define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */ |
2220 |
#define KBD_CMD_ECHO 0xEE |
2221 |
#define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */ |
2222 |
#define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */ |
2223 |
#define KBD_CMD_ENABLE 0xF4 /* Enable scanning */ |
2224 |
#define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */ |
2225 |
#define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */ |
2226 |
#define KBD_CMD_RESET 0xFF /* Reset */ |
2227 |
|
2228 |
/* Keyboard Replies */
|
2229 |
#define KBD_REPLY_POR 0xAA /* Power on reset */ |
2230 |
#define KBD_REPLY_ACK 0xFA /* Command ACK */ |
2231 |
#define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */ |
2232 |
|
2233 |
/* Status Register Bits */
|
2234 |
#define KBD_STAT_OBF 0x01 /* Keyboard output buffer full */ |
2235 |
#define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */ |
2236 |
#define KBD_STAT_SELFTEST 0x04 /* Self test successful */ |
2237 |
#define KBD_STAT_CMD 0x08 /* Last write was a command write (0=data) */ |
2238 |
#define KBD_STAT_UNLOCKED 0x10 /* Zero if keyboard locked */ |
2239 |
#define KBD_STAT_MOUSE_OBF 0x20 /* Mouse output buffer full */ |
2240 |
#define KBD_STAT_GTO 0x40 /* General receive/xmit timeout */ |
2241 |
#define KBD_STAT_PERR 0x80 /* Parity error */ |
2242 |
|
2243 |
/* Controller Mode Register Bits */
|
2244 |
#define KBD_MODE_KBD_INT 0x01 /* Keyboard data generate IRQ1 */ |
2245 |
#define KBD_MODE_MOUSE_INT 0x02 /* Mouse data generate IRQ12 */ |
2246 |
#define KBD_MODE_SYS 0x04 /* The system flag (?) */ |
2247 |
#define KBD_MODE_NO_KEYLOCK 0x08 /* The keylock doesn't affect the keyboard if set */ |
2248 |
#define KBD_MODE_DISABLE_KBD 0x10 /* Disable keyboard interface */ |
2249 |
#define KBD_MODE_DISABLE_MOUSE 0x20 /* Disable mouse interface */ |
2250 |
#define KBD_MODE_KCC 0x40 /* Scan code conversion to PC format */ |
2251 |
#define KBD_MODE_RFU 0x80 |
2252 |
|
2253 |
/* Mouse Commands */
|
2254 |
#define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */ |
2255 |
#define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */ |
2256 |
#define AUX_SET_RES 0xE8 /* Set resolution */ |
2257 |
#define AUX_GET_SCALE 0xE9 /* Get scaling factor */ |
2258 |
#define AUX_SET_STREAM 0xEA /* Set stream mode */ |
2259 |
#define AUX_POLL 0xEB /* Poll */ |
2260 |
#define AUX_RESET_WRAP 0xEC /* Reset wrap mode */ |
2261 |
#define AUX_SET_WRAP 0xEE /* Set wrap mode */ |
2262 |
#define AUX_SET_REMOTE 0xF0 /* Set remote mode */ |
2263 |
#define AUX_GET_TYPE 0xF2 /* Get type */ |
2264 |
#define AUX_SET_SAMPLE 0xF3 /* Set sample rate */ |
2265 |
#define AUX_ENABLE_DEV 0xF4 /* Enable aux device */ |
2266 |
#define AUX_DISABLE_DEV 0xF5 /* Disable aux device */ |
2267 |
#define AUX_SET_DEFAULT 0xF6 |
2268 |
#define AUX_RESET 0xFF /* Reset aux device */ |
2269 |
#define AUX_ACK 0xFA /* Command byte ACK. */ |
2270 |
|
2271 |
#define MOUSE_STATUS_REMOTE 0x40 |
2272 |
#define MOUSE_STATUS_ENABLED 0x20 |
2273 |
#define MOUSE_STATUS_SCALE21 0x10 |
2274 |
|
2275 |
#define KBD_QUEUE_SIZE 256 |
2276 |
|
2277 |
typedef struct { |
2278 |
uint8_t data[KBD_QUEUE_SIZE]; |
2279 |
int rptr, wptr, count;
|
2280 |
} KBDQueue; |
2281 |
|
2282 |
typedef struct KBDState { |
2283 |
KBDQueue queues[2];
|
2284 |
uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
|
2285 |
uint8_t status; |
2286 |
uint8_t mode; |
2287 |
/* keyboard state */
|
2288 |
int kbd_write_cmd;
|
2289 |
int scan_enabled;
|
2290 |
/* mouse state */
|
2291 |
int mouse_write_cmd;
|
2292 |
uint8_t mouse_status; |
2293 |
uint8_t mouse_resolution; |
2294 |
uint8_t mouse_sample_rate; |
2295 |
uint8_t mouse_wrap; |
2296 |
uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */
|
2297 |
uint8_t mouse_detect_state; |
2298 |
int mouse_dx; /* current values, needed for 'poll' mode */ |
2299 |
int mouse_dy;
|
2300 |
int mouse_dz;
|
2301 |
uint8_t mouse_buttons; |
2302 |
} KBDState; |
2303 |
|
2304 |
KBDState kbd_state; |
2305 |
int reset_requested;
|
2306 |
|
2307 |
/* update irq and KBD_STAT_[MOUSE_]OBF */
|
2308 |
/* XXX: not generating the irqs if KBD_MODE_DISABLE_KBD is set may be
|
2309 |
incorrect, but it avoids having to simulate exact delays */
|
2310 |
static void kbd_update_irq(KBDState *s) |
2311 |
{ |
2312 |
int irq12_level, irq1_level;
|
2313 |
|
2314 |
irq1_level = 0;
|
2315 |
irq12_level = 0;
|
2316 |
s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF); |
2317 |
if (s->queues[0].count != 0 || |
2318 |
s->queues[1].count != 0) { |
2319 |
s->status |= KBD_STAT_OBF; |
2320 |
if (s->queues[1].count != 0) { |
2321 |
s->status |= KBD_STAT_MOUSE_OBF; |
2322 |
if (s->mode & KBD_MODE_MOUSE_INT)
|
2323 |
irq12_level = 1;
|
2324 |
} else {
|
2325 |
if ((s->mode & KBD_MODE_KBD_INT) &&
|
2326 |
!(s->mode & KBD_MODE_DISABLE_KBD)) |
2327 |
irq1_level = 1;
|
2328 |
} |
2329 |
} |
2330 |
pic_set_irq(1, irq1_level);
|
2331 |
pic_set_irq(12, irq12_level);
|
2332 |
} |
2333 |
|
2334 |
static void kbd_queue(KBDState *s, int b, int aux) |
2335 |
{ |
2336 |
KBDQueue *q = &kbd_state.queues[aux]; |
2337 |
|
2338 |
#if defined(DEBUG_MOUSE) || defined(DEBUG_KBD)
|
2339 |
if (aux)
|
2340 |
printf("mouse event: 0x%02x\n", b);
|
2341 |
#ifdef DEBUG_KBD
|
2342 |
else
|
2343 |
printf("kbd event: 0x%02x\n", b);
|
2344 |
#endif
|
2345 |
#endif
|
2346 |
if (q->count >= KBD_QUEUE_SIZE)
|
2347 |
return;
|
2348 |
q->data[q->wptr] = b; |
2349 |
if (++q->wptr == KBD_QUEUE_SIZE)
|
2350 |
q->wptr = 0;
|
2351 |
q->count++; |
2352 |
kbd_update_irq(s); |
2353 |
} |
2354 |
|
2355 |
void kbd_put_keycode(int keycode) |
2356 |
{ |
2357 |
KBDState *s = &kbd_state; |
2358 |
kbd_queue(s, keycode, 0);
|
2359 |
} |
2360 |
|
2361 |
uint32_t kbd_read_status(CPUState *env, uint32_t addr) |
2362 |
{ |
2363 |
KBDState *s = &kbd_state; |
2364 |
int val;
|
2365 |
val = s->status; |
2366 |
#if defined(DEBUG_KBD)
|
2367 |
printf("kbd: read status=0x%02x\n", val);
|
2368 |
#endif
|
2369 |
return val;
|
2370 |
} |
2371 |
|
2372 |
void kbd_write_command(CPUState *env, uint32_t addr, uint32_t val)
|
2373 |
{ |
2374 |
KBDState *s = &kbd_state; |
2375 |
|
2376 |
#ifdef DEBUG_KBD
|
2377 |
printf("kbd: write cmd=0x%02x\n", val);
|
2378 |
#endif
|
2379 |
switch(val) {
|
2380 |
case KBD_CCMD_READ_MODE:
|
2381 |
kbd_queue(s, s->mode, 0);
|
2382 |
break;
|
2383 |
case KBD_CCMD_WRITE_MODE:
|
2384 |
case KBD_CCMD_WRITE_OBUF:
|
2385 |
case KBD_CCMD_WRITE_AUX_OBUF:
|
2386 |
case KBD_CCMD_WRITE_MOUSE:
|
2387 |
case KBD_CCMD_WRITE_OUTPORT:
|
2388 |
s->write_cmd = val; |
2389 |
break;
|
2390 |
case KBD_CCMD_MOUSE_DISABLE:
|
2391 |
s->mode |= KBD_MODE_DISABLE_MOUSE; |
2392 |
break;
|
2393 |
case KBD_CCMD_MOUSE_ENABLE:
|
2394 |
s->mode &= ~KBD_MODE_DISABLE_MOUSE; |
2395 |
break;
|
2396 |
case KBD_CCMD_TEST_MOUSE:
|
2397 |
kbd_queue(s, 0x00, 0); |
2398 |
break;
|
2399 |
case KBD_CCMD_SELF_TEST:
|
2400 |
s->status |= KBD_STAT_SELFTEST; |
2401 |
kbd_queue(s, 0x55, 0); |
2402 |
break;
|
2403 |
case KBD_CCMD_KBD_TEST:
|
2404 |
kbd_queue(s, 0x00, 0); |
2405 |
break;
|
2406 |
case KBD_CCMD_KBD_DISABLE:
|
2407 |
s->mode |= KBD_MODE_DISABLE_KBD; |
2408 |
kbd_update_irq(s); |
2409 |
break;
|
2410 |
case KBD_CCMD_KBD_ENABLE:
|
2411 |
s->mode &= ~KBD_MODE_DISABLE_KBD; |
2412 |
kbd_update_irq(s); |
2413 |
break;
|
2414 |
case KBD_CCMD_READ_INPORT:
|
2415 |
kbd_queue(s, 0x00, 0); |
2416 |
break;
|
2417 |
case KBD_CCMD_READ_OUTPORT:
|
2418 |
/* XXX: check that */
|
2419 |
#ifdef TARGET_I386
|
2420 |
val = 0x01 | (((cpu_single_env->a20_mask >> 20) & 1) << 1); |
2421 |
#else
|
2422 |
val = 0x01;
|
2423 |
#endif
|
2424 |
if (s->status & KBD_STAT_OBF)
|
2425 |
val |= 0x10;
|
2426 |
if (s->status & KBD_STAT_MOUSE_OBF)
|
2427 |
val |= 0x20;
|
2428 |
kbd_queue(s, val, 0);
|
2429 |
break;
|
2430 |
#ifdef TARGET_I386
|
2431 |
case KBD_CCMD_ENABLE_A20:
|
2432 |
cpu_x86_set_a20(env, 1);
|
2433 |
break;
|
2434 |
case KBD_CCMD_DISABLE_A20:
|
2435 |
cpu_x86_set_a20(env, 0);
|
2436 |
break;
|
2437 |
#endif
|
2438 |
case KBD_CCMD_RESET:
|
2439 |
reset_requested = 1;
|
2440 |
cpu_interrupt(global_env, CPU_INTERRUPT_EXIT); |
2441 |
break;
|
2442 |
case 0xff: |
2443 |
/* ignore that - I don't know what is its use */
|
2444 |
break;
|
2445 |
default:
|
2446 |
fprintf(stderr, "qemu: unsupported keyboard cmd=0x%02x\n", val);
|
2447 |
break;
|
2448 |
} |
2449 |
} |
2450 |
|
2451 |
uint32_t kbd_read_data(CPUState *env, uint32_t addr) |
2452 |
{ |
2453 |
KBDState *s = &kbd_state; |
2454 |
KBDQueue *q; |
2455 |
int val, index;
|
2456 |
|
2457 |
q = &s->queues[0]; /* first check KBD data */ |
2458 |
if (q->count == 0) |
2459 |
q = &s->queues[1]; /* then check AUX data */ |
2460 |
if (q->count == 0) { |
2461 |
/* NOTE: if no data left, we return the last keyboard one
|
2462 |
(needed for EMM386) */
|
2463 |
/* XXX: need a timer to do things correctly */
|
2464 |
q = &s->queues[0];
|
2465 |
index = q->rptr - 1;
|
2466 |
if (index < 0) |
2467 |
index = KBD_QUEUE_SIZE - 1;
|
2468 |
val = q->data[index]; |
2469 |
} else {
|
2470 |
val = q->data[q->rptr]; |
2471 |
if (++q->rptr == KBD_QUEUE_SIZE)
|
2472 |
q->rptr = 0;
|
2473 |
q->count--; |
2474 |
/* reading deasserts IRQ */
|
2475 |
if (q == &s->queues[0]) |
2476 |
pic_set_irq(1, 0); |
2477 |
else
|
2478 |
pic_set_irq(12, 0); |
2479 |
} |
2480 |
/* reassert IRQs if data left */
|
2481 |
kbd_update_irq(s); |
2482 |
#ifdef DEBUG_KBD
|
2483 |
printf("kbd: read data=0x%02x\n", val);
|
2484 |
#endif
|
2485 |
return val;
|
2486 |
} |
2487 |
|
2488 |
static void kbd_reset_keyboard(KBDState *s) |
2489 |
{ |
2490 |
s->scan_enabled = 1;
|
2491 |
} |
2492 |
|
2493 |
static void kbd_write_keyboard(KBDState *s, int val) |
2494 |
{ |
2495 |
switch(s->kbd_write_cmd) {
|
2496 |
default:
|
2497 |
case -1: |
2498 |
switch(val) {
|
2499 |
case 0x00: |
2500 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2501 |
break;
|
2502 |
case 0x05: |
2503 |
kbd_queue(s, KBD_REPLY_RESEND, 0);
|
2504 |
break;
|
2505 |
case KBD_CMD_GET_ID:
|
2506 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2507 |
kbd_queue(s, 0xab, 0); |
2508 |
kbd_queue(s, 0x83, 0); |
2509 |
break;
|
2510 |
case KBD_CMD_ECHO:
|
2511 |
kbd_queue(s, KBD_CMD_ECHO, 0);
|
2512 |
break;
|
2513 |
case KBD_CMD_ENABLE:
|
2514 |
s->scan_enabled = 1;
|
2515 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2516 |
break;
|
2517 |
case KBD_CMD_SET_LEDS:
|
2518 |
case KBD_CMD_SET_RATE:
|
2519 |
s->kbd_write_cmd = val; |
2520 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2521 |
break;
|
2522 |
case KBD_CMD_RESET_DISABLE:
|
2523 |
kbd_reset_keyboard(s); |
2524 |
s->scan_enabled = 0;
|
2525 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2526 |
break;
|
2527 |
case KBD_CMD_RESET_ENABLE:
|
2528 |
kbd_reset_keyboard(s); |
2529 |
s->scan_enabled = 1;
|
2530 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2531 |
break;
|
2532 |
case KBD_CMD_RESET:
|
2533 |
kbd_reset_keyboard(s); |
2534 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2535 |
kbd_queue(s, KBD_REPLY_POR, 0);
|
2536 |
break;
|
2537 |
default:
|
2538 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2539 |
break;
|
2540 |
} |
2541 |
break;
|
2542 |
case KBD_CMD_SET_LEDS:
|
2543 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2544 |
s->kbd_write_cmd = -1;
|
2545 |
break;
|
2546 |
case KBD_CMD_SET_RATE:
|
2547 |
kbd_queue(s, KBD_REPLY_ACK, 0);
|
2548 |
s->kbd_write_cmd = -1;
|
2549 |
break;
|
2550 |
} |
2551 |
} |
2552 |
|
2553 |
static void kbd_mouse_send_packet(KBDState *s) |
2554 |
{ |
2555 |
unsigned int b; |
2556 |
int dx1, dy1, dz1;
|
2557 |
|
2558 |
dx1 = s->mouse_dx; |
2559 |
dy1 = s->mouse_dy; |
2560 |
dz1 = s->mouse_dz; |
2561 |
/* XXX: increase range to 8 bits ? */
|
2562 |
if (dx1 > 127) |
2563 |
dx1 = 127;
|
2564 |
else if (dx1 < -127) |
2565 |
dx1 = -127;
|
2566 |
if (dy1 > 127) |
2567 |
dy1 = 127;
|
2568 |
else if (dy1 < -127) |
2569 |
dy1 = -127;
|
2570 |
b = 0x08 | ((dx1 < 0) << 4) | ((dy1 < 0) << 5) | (s->mouse_buttons & 0x07); |
2571 |
kbd_queue(s, b, 1);
|
2572 |
kbd_queue(s, dx1 & 0xff, 1); |
2573 |
kbd_queue(s, dy1 & 0xff, 1); |
2574 |
/* extra byte for IMPS/2 or IMEX */
|
2575 |
switch(s->mouse_type) {
|
2576 |
default:
|
2577 |
break;
|
2578 |
case 3: |
2579 |
if (dz1 > 127) |
2580 |
dz1 = 127;
|
2581 |
else if (dz1 < -127) |
2582 |
dz1 = -127;
|
2583 |
kbd_queue(s, dz1 & 0xff, 1); |
2584 |
break;
|
2585 |
case 4: |
2586 |
if (dz1 > 7) |
2587 |
dz1 = 7;
|
2588 |
else if (dz1 < -7) |
2589 |
dz1 = -7;
|
2590 |
b = (dz1 & 0x0f) | ((s->mouse_buttons & 0x18) << 1); |
2591 |
kbd_queue(s, b, 1);
|
2592 |
break;
|
2593 |
} |
2594 |
|
2595 |
/* update deltas */
|
2596 |
s->mouse_dx -= dx1; |
2597 |
s->mouse_dy -= dy1; |
2598 |
s->mouse_dz -= dz1; |
2599 |
} |
2600 |
|
2601 |
void kbd_mouse_event(int dx, int dy, int dz, int buttons_state) |
2602 |
{ |
2603 |
KBDState *s = &kbd_state; |
2604 |
|
2605 |
/* check if deltas are recorded when disabled */
|
2606 |
if (!(s->mouse_status & MOUSE_STATUS_ENABLED))
|
2607 |
return;
|
2608 |
|
2609 |
s->mouse_dx += dx; |
2610 |
s->mouse_dy -= dy; |
2611 |
s->mouse_dz += dz; |
2612 |
s->mouse_buttons = buttons_state; |
2613 |
|
2614 |
if (!(s->mouse_status & MOUSE_STATUS_REMOTE) &&
|
2615 |
(s->queues[1].count < (KBD_QUEUE_SIZE - 16))) { |
2616 |
for(;;) {
|
2617 |
/* if not remote, send event. Multiple events are sent if
|
2618 |
too big deltas */
|
2619 |
kbd_mouse_send_packet(s); |
2620 |
if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0) |
2621 |
break;
|
2622 |
} |
2623 |
} |
2624 |
} |
2625 |
|
2626 |
static void kbd_write_mouse(KBDState *s, int val) |
2627 |
{ |
2628 |
#ifdef DEBUG_MOUSE
|
2629 |
printf("kbd: write mouse 0x%02x\n", val);
|
2630 |
#endif
|
2631 |
switch(s->mouse_write_cmd) {
|
2632 |
default:
|
2633 |
case -1: |
2634 |
/* mouse command */
|
2635 |
if (s->mouse_wrap) {
|
2636 |
if (val == AUX_RESET_WRAP) {
|
2637 |
s->mouse_wrap = 0;
|
2638 |
kbd_queue(s, AUX_ACK, 1);
|
2639 |
return;
|
2640 |
} else if (val != AUX_RESET) { |
2641 |
kbd_queue(s, val, 1);
|
2642 |
return;
|
2643 |
} |
2644 |
} |
2645 |
switch(val) {
|
2646 |
case AUX_SET_SCALE11:
|
2647 |
s->mouse_status &= ~MOUSE_STATUS_SCALE21; |
2648 |
kbd_queue(s, AUX_ACK, 1);
|
2649 |
break;
|
2650 |
case AUX_SET_SCALE21:
|
2651 |
s->mouse_status |= MOUSE_STATUS_SCALE21; |
2652 |
kbd_queue(s, AUX_ACK, 1);
|
2653 |
break;
|
2654 |
case AUX_SET_STREAM:
|
2655 |
s->mouse_status &= ~MOUSE_STATUS_REMOTE; |
2656 |
kbd_queue(s, AUX_ACK, 1);
|
2657 |
break;
|
2658 |
case AUX_SET_WRAP:
|
2659 |
s->mouse_wrap = 1;
|
2660 |
kbd_queue(s, AUX_ACK, 1);
|
2661 |
break;
|
2662 |
case AUX_SET_REMOTE:
|
2663 |
s->mouse_status |= MOUSE_STATUS_REMOTE; |
2664 |
kbd_queue(s, AUX_ACK, 1);
|
2665 |
break;
|
2666 |
case AUX_GET_TYPE:
|
2667 |
kbd_queue(s, AUX_ACK, 1);
|
2668 |
kbd_queue(s, s->mouse_type, 1);
|
2669 |
break;
|
2670 |
case AUX_SET_RES:
|
2671 |
case AUX_SET_SAMPLE:
|
2672 |
s->mouse_write_cmd = val; |
2673 |
kbd_queue(s, AUX_ACK, 1);
|
2674 |
break;
|
2675 |
case AUX_GET_SCALE:
|
2676 |
kbd_queue(s, AUX_ACK, 1);
|
2677 |
kbd_queue(s, s->mouse_status, 1);
|
2678 |
kbd_queue(s, s->mouse_resolution, 1);
|
2679 |
kbd_queue(s, s->mouse_sample_rate, 1);
|
2680 |
break;
|
2681 |
case AUX_POLL:
|
2682 |
kbd_queue(s, AUX_ACK, 1);
|
2683 |
kbd_mouse_send_packet(s); |
2684 |
break;
|
2685 |
case AUX_ENABLE_DEV:
|
2686 |
s->mouse_status |= MOUSE_STATUS_ENABLED; |
2687 |
kbd_queue(s, AUX_ACK, 1);
|
2688 |
break;
|
2689 |
case AUX_DISABLE_DEV:
|
2690 |
s->mouse_status &= ~MOUSE_STATUS_ENABLED; |
2691 |
kbd_queue(s, AUX_ACK, 1);
|
2692 |
break;
|
2693 |
case AUX_SET_DEFAULT:
|
2694 |
s->mouse_sample_rate = 100;
|
2695 |
s->mouse_resolution = 2;
|
2696 |
s->mouse_status = 0;
|
2697 |
kbd_queue(s, AUX_ACK, 1);
|
2698 |
break;
|
2699 |
case AUX_RESET:
|
2700 |
s->mouse_sample_rate = 100;
|
2701 |
s->mouse_resolution = 2;
|
2702 |
s->mouse_status = 0;
|
2703 |
kbd_queue(s, AUX_ACK, 1);
|
2704 |
kbd_queue(s, 0xaa, 1); |
2705 |
kbd_queue(s, s->mouse_type, 1);
|
2706 |
break;
|
2707 |
default:
|
2708 |
break;
|
2709 |
} |
2710 |
break;
|
2711 |
case AUX_SET_SAMPLE:
|
2712 |
s->mouse_sample_rate = val; |
2713 |
#if 0
|
2714 |
/* detect IMPS/2 or IMEX */
|
2715 |
switch(s->mouse_detect_state) {
|
2716 |
default:
|
2717 |
case 0:
|
2718 |
if (val == 200)
|
2719 |
s->mouse_detect_state = 1;
|
2720 |
break;
|
2721 |
case 1:
|
2722 |
if (val == 100)
|
2723 |
s->mouse_detect_state = 2;
|
2724 |
else if (val == 200)
|
2725 |
s->mouse_detect_state = 3;
|
2726 |
else
|
2727 |
s->mouse_detect_state = 0;
|
2728 |
break;
|
2729 |
case 2:
|
2730 |
if (val == 80)
|
2731 |
s->mouse_type = 3; /* IMPS/2 */
|
2732 |
s->mouse_detect_state = 0;
|
2733 |
break;
|
2734 |
case 3:
|
2735 |
if (val == 80)
|
2736 |
s->mouse_type = 4; /* IMEX */
|
2737 |
s->mouse_detect_state = 0;
|
2738 |
break;
|
2739 |
}
|
2740 |
#endif
|
2741 |
kbd_queue(s, AUX_ACK, 1);
|
2742 |
s->mouse_write_cmd = -1;
|
2743 |
break;
|
2744 |
case AUX_SET_RES:
|
2745 |
s->mouse_resolution = val; |
2746 |
kbd_queue(s, AUX_ACK, 1);
|
2747 |
s->mouse_write_cmd = -1;
|
2748 |
break;
|
2749 |
} |
2750 |
} |
2751 |
|
2752 |
void kbd_write_data(CPUState *env, uint32_t addr, uint32_t val)
|
2753 |
{ |
2754 |
KBDState *s = &kbd_state; |
2755 |
|
2756 |
#ifdef DEBUG_KBD
|
2757 |
printf("kbd: write data=0x%02x\n", val);
|
2758 |
#endif
|
2759 |
|
2760 |
switch(s->write_cmd) {
|
2761 |
case 0: |
2762 |
kbd_write_keyboard(s, val); |
2763 |
break;
|
2764 |
case KBD_CCMD_WRITE_MODE:
|
2765 |
s->mode = val; |
2766 |
kbd_update_irq(s); |
2767 |
break;
|
2768 |
case KBD_CCMD_WRITE_OBUF:
|
2769 |
kbd_queue(s, val, 0);
|
2770 |
break;
|
2771 |
case KBD_CCMD_WRITE_AUX_OBUF:
|
2772 |
kbd_queue(s, val, 1);
|
2773 |
break;
|
2774 |
case KBD_CCMD_WRITE_OUTPORT:
|
2775 |
#ifdef TARGET_I386
|
2776 |
cpu_x86_set_a20(env, (val >> 1) & 1); |
2777 |
#endif
|
2778 |
if (!(val & 1)) { |
2779 |
reset_requested = 1;
|
2780 |
cpu_interrupt(global_env, CPU_INTERRUPT_EXIT); |
2781 |
} |
2782 |
break;
|
2783 |
case KBD_CCMD_WRITE_MOUSE:
|
2784 |
kbd_write_mouse(s, val); |
2785 |
break;
|
2786 |
default:
|
2787 |
break;
|
2788 |
} |
2789 |
s->write_cmd = 0;
|
2790 |
} |
2791 |
|
2792 |
void kbd_reset(KBDState *s)
|
2793 |
{ |
2794 |
KBDQueue *q; |
2795 |
int i;
|
2796 |
|
2797 |
s->kbd_write_cmd = -1;
|
2798 |
s->mouse_write_cmd = -1;
|
2799 |
s->mode = KBD_MODE_KBD_INT | KBD_MODE_MOUSE_INT; |
2800 |
s->status = KBD_STAT_CMD | KBD_STAT_UNLOCKED; |
2801 |
for(i = 0; i < 2; i++) { |
2802 |
q = &s->queues[i]; |
2803 |
q->rptr = 0;
|
2804 |
q->wptr = 0;
|
2805 |
q->count = 0;
|
2806 |
} |
2807 |
} |
2808 |
|
2809 |
void kbd_init(void) |
2810 |
{ |
2811 |
kbd_reset(&kbd_state); |
2812 |
#if defined (TARGET_I386) || defined (TARGET_PPC)
|
2813 |
register_ioport_read(0x60, 1, kbd_read_data, 1); |
2814 |
register_ioport_write(0x60, 1, kbd_write_data, 1); |
2815 |
register_ioport_read(0x64, 1, kbd_read_status, 1); |
2816 |
register_ioport_write(0x64, 1, kbd_write_command, 1); |
2817 |
#endif
|
2818 |
} |
2819 |
|
2820 |
/***********************************************************/
|
2821 |
/* Bochs BIOS debug ports */
|
2822 |
#ifdef TARGET_I386
|
2823 |
void bochs_bios_write(CPUX86State *env, uint32_t addr, uint32_t val)
|
2824 |
{ |
2825 |
switch(addr) {
|
2826 |
/* Bochs BIOS messages */
|
2827 |
case 0x400: |
2828 |
case 0x401: |
2829 |
fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
|
2830 |
exit(1);
|
2831 |
case 0x402: |
2832 |
case 0x403: |
2833 |
#ifdef DEBUG_BIOS
|
2834 |
fprintf(stderr, "%c", val);
|
2835 |
#endif
|
2836 |
break;
|
2837 |
|
2838 |
/* LGPL'ed VGA BIOS messages */
|
2839 |
case 0x501: |
2840 |
case 0x502: |
2841 |
fprintf(stderr, "VGA BIOS panic, line %d\n", val);
|
2842 |
exit(1);
|
2843 |
case 0x500: |
2844 |
case 0x503: |
2845 |
#ifdef DEBUG_BIOS
|
2846 |
fprintf(stderr, "%c", val);
|
2847 |
#endif
|
2848 |
break;
|
2849 |
} |
2850 |
} |
2851 |
|
2852 |
void bochs_bios_init(void) |
2853 |
{ |
2854 |
register_ioport_write(0x400, 1, bochs_bios_write, 2); |
2855 |
register_ioport_write(0x401, 1, bochs_bios_write, 2); |
2856 |
register_ioport_write(0x402, 1, bochs_bios_write, 1); |
2857 |
register_ioport_write(0x403, 1, bochs_bios_write, 1); |
2858 |
|
2859 |
register_ioport_write(0x501, 1, bochs_bios_write, 2); |
2860 |
register_ioport_write(0x502, 1, bochs_bios_write, 2); |
2861 |
register_ioport_write(0x500, 1, bochs_bios_write, 1); |
2862 |
register_ioport_write(0x503, 1, bochs_bios_write, 1); |
2863 |
} |
2864 |
#endif
|
2865 |
|
2866 |
/***********************************************************/
|
2867 |
/* dumb display */
|
2868 |
|
2869 |
/* init terminal so that we can grab keys */
|
2870 |
static struct termios oldtty; |
2871 |
|
2872 |
static void term_exit(void) |
2873 |
{ |
2874 |
tcsetattr (0, TCSANOW, &oldtty);
|
2875 |
} |
2876 |
|
2877 |
static void term_init(void) |
2878 |
{ |
2879 |
struct termios tty;
|
2880 |
|
2881 |
tcgetattr (0, &tty);
|
2882 |
oldtty = tty; |
2883 |
|
2884 |
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |
2885 |
|INLCR|IGNCR|ICRNL|IXON); |
2886 |
tty.c_oflag |= OPOST; |
2887 |
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); |
2888 |
/* if graphical mode, we allow Ctrl-C handling */
|
2889 |
if (nographic)
|
2890 |
tty.c_lflag &= ~ISIG; |
2891 |
tty.c_cflag &= ~(CSIZE|PARENB); |
2892 |
tty.c_cflag |= CS8; |
2893 |
tty.c_cc[VMIN] = 1;
|
2894 |
tty.c_cc[VTIME] = 0;
|
2895 |
|
2896 |
tcsetattr (0, TCSANOW, &tty);
|
2897 |
|
2898 |
atexit(term_exit); |
2899 |
|
2900 |
fcntl(0, F_SETFL, O_NONBLOCK);
|
2901 |
} |
2902 |
|
2903 |
static void dumb_update(DisplayState *ds, int x, int y, int w, int h) |
2904 |
{ |
2905 |
} |
2906 |
|
2907 |
static void dumb_resize(DisplayState *ds, int w, int h) |
2908 |
{ |
2909 |
} |
2910 |
|
2911 |
static void dumb_refresh(DisplayState *ds) |
2912 |
{ |
2913 |
vga_update_display(); |
2914 |
} |
2915 |
|
2916 |
void dumb_display_init(DisplayState *ds)
|
2917 |
{ |
2918 |
ds->data = NULL;
|
2919 |
ds->linesize = 0;
|
2920 |
ds->depth = 0;
|
2921 |
ds->dpy_update = dumb_update; |
2922 |
ds->dpy_resize = dumb_resize; |
2923 |
ds->dpy_refresh = dumb_refresh; |
2924 |
} |
2925 |
|
2926 |
#if !defined(CONFIG_SOFTMMU)
|
2927 |
/***********************************************************/
|
2928 |
/* cpu signal handler */
|
2929 |
static void host_segv_handler(int host_signum, siginfo_t *info, |
2930 |
void *puc)
|
2931 |
{ |
2932 |
if (cpu_signal_handler(host_signum, info, puc))
|
2933 |
return;
|
2934 |
term_exit(); |
2935 |
abort(); |
2936 |
} |
2937 |
#endif
|
2938 |
|
2939 |
static int timer_irq_pending; |
2940 |
static int timer_irq_count; |
2941 |
|
2942 |
static int timer_ms; |
2943 |
static int gui_refresh_pending, gui_refresh_count; |
2944 |
|
2945 |
static void host_alarm_handler(int host_signum, siginfo_t *info, |
2946 |
void *puc)
|
2947 |
{ |
2948 |
/* NOTE: since usually the OS asks a 100 Hz clock, there can be
|
2949 |
some drift between cpu_get_ticks() and the interrupt time. So
|
2950 |
we queue some interrupts to avoid missing some */
|
2951 |
timer_irq_count += pit_get_out_edges(&pit_channels[0]);
|
2952 |
if (timer_irq_count) {
|
2953 |
if (timer_irq_count > 2) |
2954 |
timer_irq_count = 2;
|
2955 |
timer_irq_count--; |
2956 |
timer_irq_pending = 1;
|
2957 |
} |
2958 |
gui_refresh_count += timer_ms; |
2959 |
if (gui_refresh_count >= GUI_REFRESH_INTERVAL) {
|
2960 |
gui_refresh_count = 0;
|
2961 |
gui_refresh_pending = 1;
|
2962 |
} |
2963 |
|
2964 |
/* XXX: seems dangerous to run that here. */
|
2965 |
DMA_run(); |
2966 |
SB16_run(); |
2967 |
|
2968 |
if (gui_refresh_pending || timer_irq_pending) {
|
2969 |
/* just exit from the cpu to have a chance to handle timers */
|
2970 |
cpu_interrupt(global_env, CPU_INTERRUPT_EXIT); |
2971 |
} |
2972 |
} |
2973 |
|
2974 |
/* main execution loop */
|
2975 |
|
2976 |
CPUState *cpu_gdbstub_get_env(void *opaque)
|
2977 |
{ |
2978 |
return global_env;
|
2979 |
} |
2980 |
|
2981 |
int main_loop(void *opaque) |
2982 |
{ |
2983 |
struct pollfd ufds[3], *pf, *serial_ufd, *gdb_ufd; |
2984 |
#if defined (TARGET_I386)
|
2985 |
struct pollfd *net_ufd;
|
2986 |
#endif
|
2987 |
int ret, n, timeout, serial_ok;
|
2988 |
uint8_t ch; |
2989 |
CPUState *env = global_env; |
2990 |
|
2991 |
if (!term_inited) {
|
2992 |
/* initialize terminal only there so that the user has a
|
2993 |
chance to stop QEMU with Ctrl-C before the gdb connection
|
2994 |
is launched */
|
2995 |
term_inited = 1;
|
2996 |
term_init(); |
2997 |
} |
2998 |
|
2999 |
serial_ok = 1;
|
3000 |
cpu_enable_ticks(); |
3001 |
for(;;) {
|
3002 |
#if defined (DO_TB_FLUSH)
|
3003 |
tb_flush(); |
3004 |
#endif
|
3005 |
ret = cpu_exec(env); |
3006 |
if (reset_requested) {
|
3007 |
ret = EXCP_INTERRUPT; |
3008 |
break;
|
3009 |
} |
3010 |
if (ret == EXCP_DEBUG) {
|
3011 |
ret = EXCP_DEBUG; |
3012 |
break;
|
3013 |
} |
3014 |
/* if hlt instruction, we wait until the next IRQ */
|
3015 |
if (ret == EXCP_HLT)
|
3016 |
timeout = 10;
|
3017 |
else
|
3018 |
timeout = 0;
|
3019 |
/* poll any events */
|
3020 |
serial_ufd = NULL;
|
3021 |
pf = ufds; |
3022 |
if (serial_ok && !(serial_ports[0].lsr & UART_LSR_DR)) { |
3023 |
serial_ufd = pf; |
3024 |
pf->fd = 0;
|
3025 |
pf->events = POLLIN; |
3026 |
pf++; |
3027 |
} |
3028 |
#if defined (TARGET_I386)
|
3029 |
net_ufd = NULL;
|
3030 |
if (net_fd > 0 && ne2000_can_receive(&ne2000_state)) { |
3031 |
net_ufd = pf; |
3032 |
pf->fd = net_fd; |
3033 |
pf->events = POLLIN; |
3034 |
pf++; |
3035 |
} |
3036 |
#endif
|
3037 |
gdb_ufd = NULL;
|
3038 |
if (gdbstub_fd > 0) { |
3039 |
gdb_ufd = pf; |
3040 |
pf->fd = gdbstub_fd; |
3041 |
pf->events = POLLIN; |
3042 |
pf++; |
3043 |
} |
3044 |
|
3045 |
ret = poll(ufds, pf - ufds, timeout); |
3046 |
if (ret > 0) { |
3047 |
if (serial_ufd && (serial_ufd->revents & POLLIN)) {
|
3048 |
n = read(0, &ch, 1); |
3049 |
if (n == 1) { |
3050 |
serial_received_byte(&serial_ports[0], ch);
|
3051 |
} else {
|
3052 |
/* Closed, stop polling. */
|
3053 |
serial_ok = 0;
|
3054 |
} |
3055 |
} |
3056 |
#if defined (TARGET_I386)
|
3057 |
if (net_ufd && (net_ufd->revents & POLLIN)) {
|
3058 |
uint8_t buf[MAX_ETH_FRAME_SIZE]; |
3059 |
|
3060 |
n = read(net_fd, buf, MAX_ETH_FRAME_SIZE); |
3061 |
if (n > 0) { |
3062 |
if (n < 60) { |
3063 |
memset(buf + n, 0, 60 - n); |
3064 |
n = 60;
|
3065 |
} |
3066 |
ne2000_receive(&ne2000_state, buf, n); |
3067 |
} |
3068 |
} |
3069 |
#endif
|
3070 |
if (gdb_ufd && (gdb_ufd->revents & POLLIN)) {
|
3071 |
uint8_t buf[1];
|
3072 |
/* stop emulation if requested by gdb */
|
3073 |
n = read(gdbstub_fd, buf, 1);
|
3074 |
if (n == 1) { |
3075 |
ret = EXCP_INTERRUPT; |
3076 |
break;
|
3077 |
} |
3078 |
} |
3079 |
} |
3080 |
|
3081 |
/* timer IRQ */
|
3082 |
if (timer_irq_pending) {
|
3083 |
#if defined (TARGET_I386)
|
3084 |
pic_set_irq(0, 1); |
3085 |
pic_set_irq(0, 0); |
3086 |
timer_irq_pending = 0;
|
3087 |
/* XXX: RTC test */
|
3088 |
if (cmos_data[RTC_REG_B] & 0x50) { |
3089 |
pic_set_irq(8, 1); |
3090 |
} |
3091 |
#endif
|
3092 |
} |
3093 |
|
3094 |
/* VGA */
|
3095 |
if (gui_refresh_pending) {
|
3096 |
display_state.dpy_refresh(&display_state); |
3097 |
gui_refresh_pending = 0;
|
3098 |
} |
3099 |
} |
3100 |
cpu_disable_ticks(); |
3101 |
return ret;
|
3102 |
} |
3103 |
|
3104 |
void help(void) |
3105 |
{ |
3106 |
printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" |
3107 |
"usage: %s [options] [disk_image]\n"
|
3108 |
"\n"
|
3109 |
"'disk_image' is a raw hard image image for IDE hard disk 0\n"
|
3110 |
"\n"
|
3111 |
"Standard options:\n"
|
3112 |
"-fda/-fdb file use 'file' as floppy disk 0/1 image\n"
|
3113 |
"-hda/-hdb file use 'file' as IDE hard disk 0/1 image\n"
|
3114 |
"-hdc/-hdd file use 'file' as IDE hard disk 2/3 image\n"
|
3115 |
"-cdrom file use 'file' as IDE cdrom 2 image\n"
|
3116 |
"-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
|
3117 |
"-snapshot write to temporary files instead of disk image files\n"
|
3118 |
"-m megs set virtual RAM size to megs MB\n"
|
3119 |
"-n script set network init script [default=%s]\n"
|
3120 |
"-tun-fd fd this fd talks to tap/tun, use it.\n"
|
3121 |
"-nographic disable graphical output\n"
|
3122 |
"\n"
|
3123 |
"Linux boot specific (does not require PC BIOS):\n"
|
3124 |
"-kernel bzImage use 'bzImage' as kernel image\n"
|
3125 |
"-append cmdline use 'cmdline' as kernel command line\n"
|
3126 |
"-initrd file use 'file' as initial ram disk\n"
|
3127 |
"\n"
|
3128 |
"Debug/Expert options:\n"
|
3129 |
"-s wait gdb connection to port %d\n"
|
3130 |
"-p port change gdb connection port\n"
|
3131 |
"-d output log to %s\n"
|
3132 |
"-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n"
|
3133 |
"-L path set the directory for the BIOS and VGA BIOS\n"
|
3134 |
#ifdef USE_CODE_COPY
|
3135 |
"-no-code-copy disable code copy acceleration\n"
|
3136 |
#endif
|
3137 |
|
3138 |
"\n"
|
3139 |
"During emulation, use C-a h to get terminal commands:\n",
|
3140 |
#ifdef CONFIG_SOFTMMU
|
3141 |
"qemu",
|
3142 |
#else
|
3143 |
"qemu-fast",
|
3144 |
#endif
|
3145 |
DEFAULT_NETWORK_SCRIPT, |
3146 |
DEFAULT_GDBSTUB_PORT, |
3147 |
"/tmp/qemu.log");
|
3148 |
term_print_help(); |
3149 |
#ifndef CONFIG_SOFTMMU
|
3150 |
printf("\n"
|
3151 |
"NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
|
3152 |
"work. Please use the 'qemu' executable to have a more accurate (but slower)\n"
|
3153 |
"PC emulation.\n");
|
3154 |
#endif
|
3155 |
exit(1);
|
3156 |
} |
3157 |
|
3158 |
struct option long_options[] = {
|
3159 |
{ "initrd", 1, NULL, 0, }, |
3160 |
{ "hda", 1, NULL, 0, }, |
3161 |
{ "hdb", 1, NULL, 0, }, |
3162 |
{ "snapshot", 0, NULL, 0, }, |
3163 |
{ "hdachs", 1, NULL, 0, }, |
3164 |
{ "nographic", 0, NULL, 0, }, |
3165 |
{ "kernel", 1, NULL, 0, }, |
3166 |
{ "append", 1, NULL, 0, }, |
3167 |
{ "tun-fd", 1, NULL, 0, }, |
3168 |
{ "hdc", 1, NULL, 0, }, |
3169 |
{ "hdd", 1, NULL, 0, }, |
3170 |
{ "cdrom", 1, NULL, 0, }, |
3171 |
{ "boot", 1, NULL, 0, }, |
3172 |
{ "fda", 1, NULL, 0, }, |
3173 |
{ "fdb", 1, NULL, 0, }, |
3174 |
{ "no-code-copy", 0, NULL, 0}, |
3175 |
{ NULL, 0, NULL, 0 }, |
3176 |
}; |
3177 |
|
3178 |
#ifdef CONFIG_SDL
|
3179 |
/* SDL use the pthreads and they modify sigaction. We don't
|
3180 |
want that. */
|
3181 |
#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) |
3182 |
extern void __libc_sigaction(); |
3183 |
#define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
|
3184 |
#else
|
3185 |
extern void __sigaction(); |
3186 |
#define sigaction(sig, act, oact) __sigaction(sig, act, oact)
|
3187 |
#endif
|
3188 |
#endif /* CONFIG_SDL */ |
3189 |
|
3190 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
3191 |
|
3192 |
/* this stack is only used during signal handling */
|
3193 |
#define SIGNAL_STACK_SIZE 32768 |
3194 |
|
3195 |
static uint8_t *signal_stack;
|
3196 |
|
3197 |
#endif
|
3198 |
|
3199 |
int main(int argc, char **argv) |
3200 |
{ |
3201 |
int c, ret, initrd_size, i, use_gdbstub, gdbstub_port, long_index;
|
3202 |
int snapshot, linux_boot;
|
3203 |
struct sigaction act;
|
3204 |
struct itimerval itv;
|
3205 |
CPUState *env; |
3206 |
const char *initrd_filename; |
3207 |
const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD]; |
3208 |
const char *kernel_filename, *kernel_cmdline; |
3209 |
char buf[1024]; |
3210 |
DisplayState *ds = &display_state; |
3211 |
|
3212 |
/* we never want that malloc() uses mmap() */
|
3213 |
mallopt(M_MMAP_THRESHOLD, 4096 * 1024); |
3214 |
initrd_filename = NULL;
|
3215 |
for(i = 0; i < MAX_FD; i++) |
3216 |
fd_filename[i] = NULL;
|
3217 |
for(i = 0; i < MAX_DISKS; i++) |
3218 |
hd_filename[i] = NULL;
|
3219 |
ram_size = 32 * 1024 * 1024; |
3220 |
vga_ram_size = VGA_RAM_SIZE; |
3221 |
#if defined (TARGET_I386)
|
3222 |
pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
|
3223 |
#endif
|
3224 |
use_gdbstub = 0;
|
3225 |
gdbstub_port = DEFAULT_GDBSTUB_PORT; |
3226 |
snapshot = 0;
|
3227 |
nographic = 0;
|
3228 |
kernel_filename = NULL;
|
3229 |
kernel_cmdline = "";
|
3230 |
for(;;) {
|
3231 |
c = getopt_long_only(argc, argv, "hm:dn:sp:L:", long_options, &long_index);
|
3232 |
if (c == -1) |
3233 |
break;
|
3234 |
switch(c) {
|
3235 |
case 0: |
3236 |
switch(long_index) {
|
3237 |
case 0: |
3238 |
initrd_filename = optarg; |
3239 |
break;
|
3240 |
case 1: |
3241 |
hd_filename[0] = optarg;
|
3242 |
break;
|
3243 |
case 2: |
3244 |
hd_filename[1] = optarg;
|
3245 |
break;
|
3246 |
case 3: |
3247 |
snapshot = 1;
|
3248 |
break;
|
3249 |
case 4: |
3250 |
{ |
3251 |
int cyls, heads, secs;
|
3252 |
const char *p; |
3253 |
p = optarg; |
3254 |
cyls = strtol(p, (char **)&p, 0); |
3255 |
if (*p != ',') |
3256 |
goto chs_fail;
|
3257 |
p++; |
3258 |
heads = strtol(p, (char **)&p, 0); |
3259 |
if (*p != ',') |
3260 |
goto chs_fail;
|
3261 |
p++; |
3262 |
secs = strtol(p, (char **)&p, 0); |
3263 |
if (*p != '\0') |
3264 |
goto chs_fail;
|
3265 |
ide_set_geometry(0, cyls, heads, secs);
|
3266 |
chs_fail: ;
|
3267 |
} |
3268 |
break;
|
3269 |
case 5: |
3270 |
nographic = 1;
|
3271 |
break;
|
3272 |
case 6: |
3273 |
kernel_filename = optarg; |
3274 |
break;
|
3275 |
case 7: |
3276 |
kernel_cmdline = optarg; |
3277 |
break;
|
3278 |
#if defined (TARGET_I386)
|
3279 |
case 8: |
3280 |
net_fd = atoi(optarg); |
3281 |
break;
|
3282 |
#endif
|
3283 |
case 9: |
3284 |
hd_filename[2] = optarg;
|
3285 |
break;
|
3286 |
case 10: |
3287 |
hd_filename[3] = optarg;
|
3288 |
break;
|
3289 |
case 11: |
3290 |
hd_filename[2] = optarg;
|
3291 |
ide_set_cdrom(2, 1); |
3292 |
break;
|
3293 |
case 12: |
3294 |
boot_device = optarg[0];
|
3295 |
if (boot_device != 'a' && boot_device != 'b' && |
3296 |
boot_device != 'c' && boot_device != 'd') { |
3297 |
fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
|
3298 |
exit(1);
|
3299 |
} |
3300 |
break;
|
3301 |
case 13: |
3302 |
fd_filename[0] = optarg;
|
3303 |
break;
|
3304 |
case 14: |
3305 |
fd_filename[1] = optarg;
|
3306 |
break;
|
3307 |
case 15: |
3308 |
code_copy_enabled = 0;
|
3309 |
break;
|
3310 |
} |
3311 |
break;
|
3312 |
case 'h': |
3313 |
help(); |
3314 |
break;
|
3315 |
case 'm': |
3316 |
ram_size = atoi(optarg) * 1024 * 1024; |
3317 |
if (ram_size <= 0) |
3318 |
help(); |
3319 |
if (ram_size > PHYS_RAM_MAX_SIZE) {
|
3320 |
fprintf(stderr, "qemu: at most %d MB RAM can be simulated\n",
|
3321 |
PHYS_RAM_MAX_SIZE / (1024 * 1024)); |
3322 |
exit(1);
|
3323 |
} |
3324 |
break;
|
3325 |
case 'd': |
3326 |
cpu_set_log(CPU_LOG_ALL); |
3327 |
break;
|
3328 |
#if defined (TARGET_I386)
|
3329 |
case 'n': |
3330 |
pstrcpy(network_script, sizeof(network_script), optarg);
|
3331 |
break;
|
3332 |
#endif
|
3333 |
case 's': |
3334 |
use_gdbstub = 1;
|
3335 |
break;
|
3336 |
case 'p': |
3337 |
gdbstub_port = atoi(optarg); |
3338 |
break;
|
3339 |
case 'L': |
3340 |
bios_dir = optarg; |
3341 |
break;
|
3342 |
} |
3343 |
} |
3344 |
|
3345 |
if (optind < argc) {
|
3346 |
hd_filename[0] = argv[optind++];
|
3347 |
} |
3348 |
|
3349 |
linux_boot = (kernel_filename != NULL);
|
3350 |
|
3351 |
if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' && |
3352 |
fd_filename[0] == '\0') |
3353 |
help(); |
3354 |
|
3355 |
/* boot to cd by default if no hard disk */
|
3356 |
if (hd_filename[0] == '\0' && boot_device == 'c') { |
3357 |
if (fd_filename[0] != '\0') |
3358 |
boot_device = 'a';
|
3359 |
else
|
3360 |
boot_device = 'd';
|
3361 |
} |
3362 |
|
3363 |
#if !defined(CONFIG_SOFTMMU)
|
3364 |
/* must avoid mmap() usage of glibc by setting a buffer "by hand" */
|
3365 |
{ |
3366 |
static uint8_t stdout_buf[4096]; |
3367 |
setvbuf(stdout, stdout_buf, _IOLBF, sizeof(stdout_buf));
|
3368 |
} |
3369 |
#else
|
3370 |
setvbuf(stdout, NULL, _IOLBF, 0); |
3371 |
#endif
|
3372 |
|
3373 |
/* init network tun interface */
|
3374 |
#if defined (TARGET_I386)
|
3375 |
if (net_fd < 0) |
3376 |
net_init(); |
3377 |
#endif
|
3378 |
|
3379 |
/* init the memory */
|
3380 |
phys_ram_size = ram_size + vga_ram_size; |
3381 |
|
3382 |
#ifdef CONFIG_SOFTMMU
|
3383 |
phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size); |
3384 |
if (!phys_ram_base) {
|
3385 |
fprintf(stderr, "Could not allocate physical memory\n");
|
3386 |
exit(1);
|
3387 |
} |
3388 |
#else
|
3389 |
/* as we must map the same page at several addresses, we must use
|
3390 |
a fd */
|
3391 |
{ |
3392 |
const char *tmpdir; |
3393 |
|
3394 |
tmpdir = getenv("QEMU_TMPDIR");
|
3395 |
if (!tmpdir)
|
3396 |
tmpdir = "/tmp";
|
3397 |
snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir); |
3398 |
if (mkstemp(phys_ram_file) < 0) { |
3399 |
fprintf(stderr, "Could not create temporary memory file '%s'\n",
|
3400 |
phys_ram_file); |
3401 |
exit(1);
|
3402 |
} |
3403 |
phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
|
3404 |
if (phys_ram_fd < 0) { |
3405 |
fprintf(stderr, "Could not open temporary memory file '%s'\n",
|
3406 |
phys_ram_file); |
3407 |
exit(1);
|
3408 |
} |
3409 |
ftruncate(phys_ram_fd, phys_ram_size); |
3410 |
unlink(phys_ram_file); |
3411 |
phys_ram_base = mmap(get_mmap_addr(phys_ram_size), |
3412 |
phys_ram_size, |
3413 |
PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED, |
3414 |
phys_ram_fd, 0);
|
3415 |
if (phys_ram_base == MAP_FAILED) {
|
3416 |
fprintf(stderr, "Could not map physical memory\n");
|
3417 |
exit(1);
|
3418 |
} |
3419 |
} |
3420 |
#endif
|
3421 |
|
3422 |
/* open the virtual block devices */
|
3423 |
for(i = 0; i < MAX_DISKS; i++) { |
3424 |
if (hd_filename[i]) {
|
3425 |
bs_table[i] = bdrv_open(hd_filename[i], snapshot); |
3426 |
if (!bs_table[i]) {
|
3427 |
fprintf(stderr, "qemu: could not open hard disk image '%s\n",
|
3428 |
hd_filename[i]); |
3429 |
exit(1);
|
3430 |
} |
3431 |
} |
3432 |
} |
3433 |
|
3434 |
/* init CPU state */
|
3435 |
env = cpu_init(); |
3436 |
global_env = env; |
3437 |
cpu_single_env = env; |
3438 |
|
3439 |
init_ioports(); |
3440 |
|
3441 |
/* allocate RAM */
|
3442 |
cpu_register_physical_memory(0, ram_size, 0); |
3443 |
|
3444 |
#if defined(TARGET_I386)
|
3445 |
/* RAW PC boot */
|
3446 |
|
3447 |
/* BIOS load */
|
3448 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME); |
3449 |
ret = load_image(buf, phys_ram_base + 0x000f0000);
|
3450 |
if (ret != 0x10000) { |
3451 |
fprintf(stderr, "qemu: could not load PC bios '%s'\n", buf);
|
3452 |
exit(1);
|
3453 |
} |
3454 |
|
3455 |
/* VGA BIOS load */
|
3456 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME); |
3457 |
ret = load_image(buf, phys_ram_base + 0x000c0000);
|
3458 |
|
3459 |
/* setup basic memory access */
|
3460 |
cpu_register_physical_memory(0xc0000, 0x10000, 0xc0000 | IO_MEM_ROM); |
3461 |
cpu_register_physical_memory(0xf0000, 0x10000, 0xf0000 | IO_MEM_ROM); |
3462 |
|
3463 |
bochs_bios_init(); |
3464 |
|
3465 |
if (linux_boot) {
|
3466 |
extern uint8_t linux_boot_start;
|
3467 |
extern uint8_t linux_boot_end;
|
3468 |
|
3469 |
if (bs_table[0] == NULL) { |
3470 |
fprintf(stderr, "A disk image must be given for 'hda' when booting a Linux kernel\n");
|
3471 |
exit(1);
|
3472 |
} |
3473 |
bdrv_set_boot_sector(bs_table[0], &linux_boot_start,
|
3474 |
&linux_boot_end - &linux_boot_start); |
3475 |
|
3476 |
/* now we can load the kernel */
|
3477 |
ret = load_kernel(kernel_filename, |
3478 |
phys_ram_base + KERNEL_LOAD_ADDR, |
3479 |
phys_ram_base + KERNEL_PARAMS_ADDR); |
3480 |
if (ret < 0) { |
3481 |
fprintf(stderr, "qemu: could not load kernel '%s'\n",
|
3482 |
kernel_filename); |
3483 |
exit(1);
|
3484 |
} |
3485 |
|
3486 |
/* load initrd */
|
3487 |
initrd_size = 0;
|
3488 |
if (initrd_filename) {
|
3489 |
initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR); |
3490 |
if (initrd_size < 0) { |
3491 |
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
3492 |
initrd_filename); |
3493 |
exit(1);
|
3494 |
} |
3495 |
} |
3496 |
if (initrd_size > 0) { |
3497 |
stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x218, INITRD_LOAD_ADDR);
|
3498 |
stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x21c, initrd_size);
|
3499 |
} |
3500 |
pstrcpy(phys_ram_base + KERNEL_CMDLINE_ADDR, 4096,
|
3501 |
kernel_cmdline); |
3502 |
stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x20, 0xA33F); |
3503 |
stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x22,
|
3504 |
KERNEL_CMDLINE_ADDR - KERNEL_PARAMS_ADDR); |
3505 |
/* loader type */
|
3506 |
stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x210, 0x01); |
3507 |
} |
3508 |
#elif defined(TARGET_PPC)
|
3509 |
/* allocate ROM */
|
3510 |
// snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
|
3511 |
snprintf(buf, sizeof(buf), "%s", BIOS_FILENAME); |
3512 |
printf("load BIOS at %p\n", phys_ram_base + 0x000f0000); |
3513 |
ret = load_image(buf, phys_ram_base + 0x000f0000);
|
3514 |
if (ret != 0x10000) { |
3515 |
fprintf(stderr, "qemu: could not load PPC bios '%s' (%d)\n%m\n",
|
3516 |
buf, ret); |
3517 |
exit(1);
|
3518 |
} |
3519 |
#endif
|
3520 |
|
3521 |
/* terminal init */
|
3522 |
if (nographic) {
|
3523 |
dumb_display_init(ds); |
3524 |
} else {
|
3525 |
#ifdef CONFIG_SDL
|
3526 |
sdl_display_init(ds); |
3527 |
#else
|
3528 |
dumb_display_init(ds); |
3529 |
#endif
|
3530 |
} |
3531 |
/* init basic PC hardware */
|
3532 |
register_ioport_write(0x80, 1, ioport80_write, 1); |
3533 |
|
3534 |
vga_initialize(ds, phys_ram_base + ram_size, ram_size, |
3535 |
vga_ram_size); |
3536 |
#if defined (TARGET_I386)
|
3537 |
cmos_init(); |
3538 |
#endif
|
3539 |
pic_init(); |
3540 |
pit_init(); |
3541 |
serial_init(); |
3542 |
#if defined (TARGET_I386)
|
3543 |
ne2000_init(); |
3544 |
#endif
|
3545 |
ide_init(); |
3546 |
kbd_init(); |
3547 |
AUD_init(); |
3548 |
DMA_init(); |
3549 |
#if defined (TARGET_I386)
|
3550 |
SB16_init(); |
3551 |
#endif
|
3552 |
#if defined (TARGET_PPC)
|
3553 |
PPC_end_init(); |
3554 |
#endif
|
3555 |
fdctrl_register((unsigned char **)fd_filename, snapshot, boot_device); |
3556 |
|
3557 |
/* setup cpu signal handlers for MMU / self modifying code handling */
|
3558 |
#if !defined(CONFIG_SOFTMMU)
|
3559 |
|
3560 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
3561 |
{ |
3562 |
stack_t stk; |
3563 |
signal_stack = malloc(SIGNAL_STACK_SIZE); |
3564 |
stk.ss_sp = signal_stack; |
3565 |
stk.ss_size = SIGNAL_STACK_SIZE; |
3566 |
stk.ss_flags = 0;
|
3567 |
|
3568 |
if (sigaltstack(&stk, NULL) < 0) { |
3569 |
perror("sigaltstack");
|
3570 |
exit(1);
|
3571 |
} |
3572 |
} |
3573 |
#endif
|
3574 |
|
3575 |
sigfillset(&act.sa_mask); |
3576 |
act.sa_flags = SA_SIGINFO; |
3577 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
3578 |
act.sa_flags |= SA_ONSTACK; |
3579 |
#endif
|
3580 |
act.sa_sigaction = host_segv_handler; |
3581 |
sigaction(SIGSEGV, &act, NULL);
|
3582 |
sigaction(SIGBUS, &act, NULL);
|
3583 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
3584 |
sigaction(SIGFPE, &act, NULL);
|
3585 |
#endif
|
3586 |
#endif
|
3587 |
|
3588 |
/* timer signal */
|
3589 |
sigfillset(&act.sa_mask); |
3590 |
act.sa_flags = SA_SIGINFO; |
3591 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
3592 |
act.sa_flags |= SA_ONSTACK; |
3593 |
#endif
|
3594 |
act.sa_sigaction = host_alarm_handler; |
3595 |
sigaction(SIGALRM, &act, NULL);
|
3596 |
|
3597 |
itv.it_interval.tv_sec = 0;
|
3598 |
itv.it_interval.tv_usec = 1000;
|
3599 |
itv.it_value.tv_sec = 0;
|
3600 |
itv.it_value.tv_usec = 10 * 1000; |
3601 |
setitimer(ITIMER_REAL, &itv, NULL);
|
3602 |
/* we probe the tick duration of the kernel to inform the user if
|
3603 |
the emulated kernel requested a too high timer frequency */
|
3604 |
getitimer(ITIMER_REAL, &itv); |
3605 |
timer_ms = itv.it_interval.tv_usec / 1000;
|
3606 |
pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) / |
3607 |
1000000;
|
3608 |
|
3609 |
if (use_gdbstub) {
|
3610 |
cpu_gdbstub(NULL, main_loop, gdbstub_port);
|
3611 |
} else {
|
3612 |
main_loop(NULL);
|
3613 |
} |
3614 |
return 0; |
3615 |
} |