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/*
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* QEMU PC System Emulator
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*
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* Copyright (c) 2003-2004 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 "hw.h" |
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#include "pc.h" |
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#include "fdc.h" |
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#include "pci.h" |
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#include "block.h" |
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#include "sysemu.h" |
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#include "audio/audio.h" |
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#include "net.h" |
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#include "smbus.h" |
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#include "boards.h" |
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#include "console.h" |
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/* output Bochs bios info messages */
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//#define DEBUG_BIOS
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#define BIOS_FILENAME "bios.bin" |
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#define VGABIOS_FILENAME "vgabios.bin" |
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#define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin" |
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#define PC_MAX_BIOS_SIZE (4 * 1024 * 1024) |
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/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
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#define ACPI_DATA_SIZE 0x10000 |
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#define MAX_IDE_BUS 2 |
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static fdctrl_t *floppy_controller;
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static RTCState *rtc_state;
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static PITState *pit;
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static IOAPICState *ioapic;
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static PCIDevice *i440fx_state;
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static void ioport80_write(void *opaque, uint32_t addr, uint32_t data) |
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{ |
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} |
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/* MSDOS compatibility mode FPU exception support */
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static qemu_irq ferr_irq;
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/* XXX: add IGNNE support */
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void cpu_set_ferr(CPUX86State *s)
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{ |
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qemu_irq_raise(ferr_irq); |
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} |
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static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data) |
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{ |
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qemu_irq_lower(ferr_irq); |
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} |
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/* TSC handling */
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uint64_t cpu_get_tsc(CPUX86State *env) |
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{ |
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/* Note: when using kqemu, it is more logical to return the host TSC
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because kqemu does not trap the RDTSC instruction for
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performance reasons */
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#if USE_KQEMU
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if (env->kqemu_enabled) {
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return cpu_get_real_ticks();
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} else
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#endif
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{ |
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return cpu_get_ticks();
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} |
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} |
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/* SMM support */
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void cpu_smm_update(CPUState *env)
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{ |
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if (i440fx_state && env == first_cpu)
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i440fx_set_smm(i440fx_state, (env->hflags >> HF_SMM_SHIFT) & 1);
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} |
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/* IRQ handling */
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int cpu_get_pic_interrupt(CPUState *env)
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{ |
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int intno;
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intno = apic_get_interrupt(env); |
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if (intno >= 0) { |
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/* set irq request if a PIC irq is still pending */
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/* XXX: improve that */
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pic_update_irq(isa_pic); |
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return intno;
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} |
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/* read the irq from the PIC */
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if (!apic_accept_pic_intr(env))
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return -1; |
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intno = pic_read_irq(isa_pic); |
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return intno;
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} |
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static void pic_irq_request(void *opaque, int irq, int level) |
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{ |
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CPUState *env = first_cpu; |
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if (env->apic_state) {
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while (env) {
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if (apic_accept_pic_intr(env))
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apic_deliver_pic_intr(env, level); |
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env = env->next_cpu; |
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} |
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} else {
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if (level)
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cpu_interrupt(env, CPU_INTERRUPT_HARD); |
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else
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cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); |
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} |
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} |
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/* PC cmos mappings */
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#define REG_EQUIPMENT_BYTE 0x14 |
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static int cmos_get_fd_drive_type(int fd0) |
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{ |
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int val;
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switch (fd0) {
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case 0: |
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/* 1.44 Mb 3"5 drive */
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val = 4;
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break;
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case 1: |
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/* 2.88 Mb 3"5 drive */
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val = 5;
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break;
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case 2: |
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/* 1.2 Mb 5"5 drive */
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val = 2;
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break;
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default:
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val = 0;
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break;
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} |
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return val;
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} |
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static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd) |
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{ |
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RTCState *s = rtc_state; |
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int cylinders, heads, sectors;
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bdrv_get_geometry_hint(hd, &cylinders, &heads, §ors); |
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rtc_set_memory(s, type_ofs, 47);
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rtc_set_memory(s, info_ofs, cylinders); |
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rtc_set_memory(s, info_ofs + 1, cylinders >> 8); |
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rtc_set_memory(s, info_ofs + 2, heads);
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rtc_set_memory(s, info_ofs + 3, 0xff); |
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rtc_set_memory(s, info_ofs + 4, 0xff); |
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rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3)); |
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rtc_set_memory(s, info_ofs + 6, cylinders);
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rtc_set_memory(s, info_ofs + 7, cylinders >> 8); |
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rtc_set_memory(s, info_ofs + 8, sectors);
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} |
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/* convert boot_device letter to something recognizable by the bios */
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static int boot_device2nibble(char boot_device) |
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{ |
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switch(boot_device) {
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case 'a': |
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case 'b': |
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return 0x01; /* floppy boot */ |
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case 'c': |
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return 0x02; /* hard drive boot */ |
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case 'd': |
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return 0x03; /* CD-ROM boot */ |
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case 'n': |
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return 0x04; /* Network boot */ |
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} |
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return 0; |
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} |
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/* copy/pasted from cmos_init, should be made a general function
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and used there as well */
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static int pc_boot_set(void *opaque, const char *boot_device) |
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{ |
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#define PC_MAX_BOOT_DEVICES 3 |
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RTCState *s = (RTCState *)opaque; |
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int nbds, bds[3] = { 0, }; |
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int i;
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nbds = strlen(boot_device); |
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if (nbds > PC_MAX_BOOT_DEVICES) {
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term_printf("Too many boot devices for PC\n");
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return(1); |
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} |
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for (i = 0; i < nbds; i++) { |
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bds[i] = boot_device2nibble(boot_device[i]); |
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if (bds[i] == 0) { |
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term_printf("Invalid boot device for PC: '%c'\n",
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boot_device[i]); |
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return(1); |
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} |
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} |
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rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]); |
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rtc_set_memory(s, 0x38, (bds[2] << 4)); |
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return(0); |
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} |
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/* hd_table must contain 4 block drivers */
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static void cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size, |
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const char *boot_device, BlockDriverState **hd_table) |
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{ |
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RTCState *s = rtc_state; |
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int nbds, bds[3] = { 0, }; |
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int val;
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int fd0, fd1, nb;
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int i;
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/* various important CMOS locations needed by PC/Bochs bios */
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/* memory size */
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val = 640; /* base memory in K */ |
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rtc_set_memory(s, 0x15, val);
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rtc_set_memory(s, 0x16, val >> 8); |
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val = (ram_size / 1024) - 1024; |
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if (val > 65535) |
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val = 65535;
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rtc_set_memory(s, 0x17, val);
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rtc_set_memory(s, 0x18, val >> 8); |
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rtc_set_memory(s, 0x30, val);
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rtc_set_memory(s, 0x31, val >> 8); |
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if (above_4g_mem_size) {
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rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16); |
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rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24); |
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rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32); |
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} |
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if (ram_size > (16 * 1024 * 1024)) |
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val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536); |
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else
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val = 0;
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if (val > 65535) |
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val = 65535;
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rtc_set_memory(s, 0x34, val);
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rtc_set_memory(s, 0x35, val >> 8); |
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/* set the number of CPU */
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rtc_set_memory(s, 0x5f, smp_cpus - 1); |
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/* set boot devices, and disable floppy signature check if requested */
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#define PC_MAX_BOOT_DEVICES 3 |
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nbds = strlen(boot_device); |
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if (nbds > PC_MAX_BOOT_DEVICES) {
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fprintf(stderr, "Too many boot devices for PC\n");
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exit(1);
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} |
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for (i = 0; i < nbds; i++) { |
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bds[i] = boot_device2nibble(boot_device[i]); |
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if (bds[i] == 0) { |
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fprintf(stderr, "Invalid boot device for PC: '%c'\n",
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boot_device[i]); |
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exit(1);
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} |
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} |
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rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]); |
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rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1)); |
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/* floppy type */
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fd0 = fdctrl_get_drive_type(floppy_controller, 0);
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fd1 = fdctrl_get_drive_type(floppy_controller, 1);
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val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
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rtc_set_memory(s, 0x10, val);
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val = 0;
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nb = 0;
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if (fd0 < 3) |
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nb++; |
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if (fd1 < 3) |
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nb++; |
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switch (nb) {
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case 0: |
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break;
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case 1: |
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val |= 0x01; /* 1 drive, ready for boot */ |
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break;
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case 2: |
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val |= 0x41; /* 2 drives, ready for boot */ |
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break;
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} |
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val |= 0x02; /* FPU is there */ |
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val |= 0x04; /* PS/2 mouse installed */ |
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rtc_set_memory(s, REG_EQUIPMENT_BYTE, val); |
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/* hard drives */
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rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0)); |
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if (hd_table[0]) |
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cmos_init_hd(0x19, 0x1b, hd_table[0]); |
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if (hd_table[1]) |
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cmos_init_hd(0x1a, 0x24, hd_table[1]); |
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val = 0;
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for (i = 0; i < 4; i++) { |
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if (hd_table[i]) {
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int cylinders, heads, sectors, translation;
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/* NOTE: bdrv_get_geometry_hint() returns the physical
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geometry. It is always such that: 1 <= sects <= 63, 1
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<= heads <= 16, 1 <= cylinders <= 16383. The BIOS
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geometry can be different if a translation is done. */
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translation = bdrv_get_translation_hint(hd_table[i]); |
330 |
if (translation == BIOS_ATA_TRANSLATION_AUTO) {
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bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, §ors); |
332 |
if (cylinders <= 1024 && heads <= 16 && sectors <= 63) { |
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/* No translation. */
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translation = 0;
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} else {
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/* LBA translation. */
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translation = 1;
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} |
339 |
} else {
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translation--; |
341 |
} |
342 |
val |= translation << (i * 2);
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} |
344 |
} |
345 |
rtc_set_memory(s, 0x39, val);
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} |
347 |
|
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void ioport_set_a20(int enable) |
349 |
{ |
350 |
/* XXX: send to all CPUs ? */
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cpu_x86_set_a20(first_cpu, enable); |
352 |
} |
353 |
|
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int ioport_get_a20(void) |
355 |
{ |
356 |
return ((first_cpu->a20_mask >> 20) & 1); |
357 |
} |
358 |
|
359 |
static void ioport92_write(void *opaque, uint32_t addr, uint32_t val) |
360 |
{ |
361 |
ioport_set_a20((val >> 1) & 1); |
362 |
/* XXX: bit 0 is fast reset */
|
363 |
} |
364 |
|
365 |
static uint32_t ioport92_read(void *opaque, uint32_t addr) |
366 |
{ |
367 |
return ioport_get_a20() << 1; |
368 |
} |
369 |
|
370 |
/***********************************************************/
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371 |
/* Bochs BIOS debug ports */
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372 |
|
373 |
static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) |
374 |
{ |
375 |
static const char shutdown_str[8] = "Shutdown"; |
376 |
static int shutdown_index = 0; |
377 |
|
378 |
switch(addr) {
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379 |
/* Bochs BIOS messages */
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380 |
case 0x400: |
381 |
case 0x401: |
382 |
fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
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383 |
exit(1);
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384 |
case 0x402: |
385 |
case 0x403: |
386 |
#ifdef DEBUG_BIOS
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387 |
fprintf(stderr, "%c", val);
|
388 |
#endif
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389 |
break;
|
390 |
case 0x8900: |
391 |
/* same as Bochs power off */
|
392 |
if (val == shutdown_str[shutdown_index]) {
|
393 |
shutdown_index++; |
394 |
if (shutdown_index == 8) { |
395 |
shutdown_index = 0;
|
396 |
qemu_system_shutdown_request(); |
397 |
} |
398 |
} else {
|
399 |
shutdown_index = 0;
|
400 |
} |
401 |
break;
|
402 |
|
403 |
/* LGPL'ed VGA BIOS messages */
|
404 |
case 0x501: |
405 |
case 0x502: |
406 |
fprintf(stderr, "VGA BIOS panic, line %d\n", val);
|
407 |
exit(1);
|
408 |
case 0x500: |
409 |
case 0x503: |
410 |
#ifdef DEBUG_BIOS
|
411 |
fprintf(stderr, "%c", val);
|
412 |
#endif
|
413 |
break;
|
414 |
} |
415 |
} |
416 |
|
417 |
static void bochs_bios_init(void) |
418 |
{ |
419 |
register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL); |
420 |
register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL); |
421 |
register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL); |
422 |
register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL); |
423 |
register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL); |
424 |
|
425 |
register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL); |
426 |
register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL); |
427 |
register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL); |
428 |
register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL); |
429 |
} |
430 |
|
431 |
/* Generate an initial boot sector which sets state and jump to
|
432 |
a specified vector */
|
433 |
static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip) |
434 |
{ |
435 |
uint8_t bootsect[512], *p;
|
436 |
int i;
|
437 |
int hda;
|
438 |
|
439 |
hda = drive_get_index(IF_IDE, 0, 0); |
440 |
if (hda == -1) { |
441 |
fprintf(stderr, "A disk image must be given for 'hda' when booting "
|
442 |
"a Linux kernel\n(if you really don't want it, use /dev/zero)\n");
|
443 |
exit(1);
|
444 |
} |
445 |
|
446 |
memset(bootsect, 0, sizeof(bootsect)); |
447 |
|
448 |
/* Copy the MSDOS partition table if possible */
|
449 |
bdrv_read(drives_table[hda].bdrv, 0, bootsect, 1); |
450 |
|
451 |
/* Make sure we have a partition signature */
|
452 |
bootsect[510] = 0x55; |
453 |
bootsect[511] = 0xaa; |
454 |
|
455 |
/* Actual code */
|
456 |
p = bootsect; |
457 |
*p++ = 0xfa; /* CLI */ |
458 |
*p++ = 0xfc; /* CLD */ |
459 |
|
460 |
for (i = 0; i < 6; i++) { |
461 |
if (i == 1) /* Skip CS */ |
462 |
continue;
|
463 |
|
464 |
*p++ = 0xb8; /* MOV AX,imm16 */ |
465 |
*p++ = segs[i]; |
466 |
*p++ = segs[i] >> 8;
|
467 |
*p++ = 0x8e; /* MOV <seg>,AX */ |
468 |
*p++ = 0xc0 + (i << 3); |
469 |
} |
470 |
|
471 |
for (i = 0; i < 8; i++) { |
472 |
*p++ = 0x66; /* 32-bit operand size */ |
473 |
*p++ = 0xb8 + i; /* MOV <reg>,imm32 */ |
474 |
*p++ = gpr[i]; |
475 |
*p++ = gpr[i] >> 8;
|
476 |
*p++ = gpr[i] >> 16;
|
477 |
*p++ = gpr[i] >> 24;
|
478 |
} |
479 |
|
480 |
*p++ = 0xea; /* JMP FAR */ |
481 |
*p++ = ip; /* IP */
|
482 |
*p++ = ip >> 8;
|
483 |
*p++ = segs[1]; /* CS */ |
484 |
*p++ = segs[1] >> 8; |
485 |
|
486 |
bdrv_set_boot_sector(drives_table[hda].bdrv, bootsect, sizeof(bootsect));
|
487 |
} |
488 |
|
489 |
static long get_file_size(FILE *f) |
490 |
{ |
491 |
long where, size;
|
492 |
|
493 |
/* XXX: on Unix systems, using fstat() probably makes more sense */
|
494 |
|
495 |
where = ftell(f); |
496 |
fseek(f, 0, SEEK_END);
|
497 |
size = ftell(f); |
498 |
fseek(f, where, SEEK_SET); |
499 |
|
500 |
return size;
|
501 |
} |
502 |
|
503 |
static void load_linux(const char *kernel_filename, |
504 |
const char *initrd_filename, |
505 |
const char *kernel_cmdline) |
506 |
{ |
507 |
uint16_t protocol; |
508 |
uint32_t gpr[8];
|
509 |
uint16_t seg[6];
|
510 |
uint16_t real_seg; |
511 |
int setup_size, kernel_size, initrd_size, cmdline_size;
|
512 |
uint32_t initrd_max; |
513 |
uint8_t header[1024];
|
514 |
target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr; |
515 |
FILE *f, *fi; |
516 |
|
517 |
/* Align to 16 bytes as a paranoia measure */
|
518 |
cmdline_size = (strlen(kernel_cmdline)+16) & ~15; |
519 |
|
520 |
/* load the kernel header */
|
521 |
f = fopen(kernel_filename, "rb");
|
522 |
if (!f || !(kernel_size = get_file_size(f)) ||
|
523 |
fread(header, 1, 1024, f) != 1024) { |
524 |
fprintf(stderr, "qemu: could not load kernel '%s'\n",
|
525 |
kernel_filename); |
526 |
exit(1);
|
527 |
} |
528 |
|
529 |
/* kernel protocol version */
|
530 |
#if 0
|
531 |
fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
|
532 |
#endif
|
533 |
if (ldl_p(header+0x202) == 0x53726448) |
534 |
protocol = lduw_p(header+0x206);
|
535 |
else
|
536 |
protocol = 0;
|
537 |
|
538 |
if (protocol < 0x200 || !(header[0x211] & 0x01)) { |
539 |
/* Low kernel */
|
540 |
real_addr = 0x90000;
|
541 |
cmdline_addr = 0x9a000 - cmdline_size;
|
542 |
prot_addr = 0x10000;
|
543 |
} else if (protocol < 0x202) { |
544 |
/* High but ancient kernel */
|
545 |
real_addr = 0x90000;
|
546 |
cmdline_addr = 0x9a000 - cmdline_size;
|
547 |
prot_addr = 0x100000;
|
548 |
} else {
|
549 |
/* High and recent kernel */
|
550 |
real_addr = 0x10000;
|
551 |
cmdline_addr = 0x20000;
|
552 |
prot_addr = 0x100000;
|
553 |
} |
554 |
|
555 |
#if 0
|
556 |
fprintf(stderr,
|
557 |
"qemu: real_addr = 0x" TARGET_FMT_plx "\n"
|
558 |
"qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n"
|
559 |
"qemu: prot_addr = 0x" TARGET_FMT_plx "\n",
|
560 |
real_addr,
|
561 |
cmdline_addr,
|
562 |
prot_addr);
|
563 |
#endif
|
564 |
|
565 |
/* highest address for loading the initrd */
|
566 |
if (protocol >= 0x203) |
567 |
initrd_max = ldl_p(header+0x22c);
|
568 |
else
|
569 |
initrd_max = 0x37ffffff;
|
570 |
|
571 |
if (initrd_max >= ram_size-ACPI_DATA_SIZE)
|
572 |
initrd_max = ram_size-ACPI_DATA_SIZE-1;
|
573 |
|
574 |
/* kernel command line */
|
575 |
pstrcpy_targphys(cmdline_addr, 4096, kernel_cmdline);
|
576 |
|
577 |
if (protocol >= 0x202) { |
578 |
stl_p(header+0x228, cmdline_addr);
|
579 |
} else {
|
580 |
stw_p(header+0x20, 0xA33F); |
581 |
stw_p(header+0x22, cmdline_addr-real_addr);
|
582 |
} |
583 |
|
584 |
/* loader type */
|
585 |
/* High nybble = B reserved for Qemu; low nybble is revision number.
|
586 |
If this code is substantially changed, you may want to consider
|
587 |
incrementing the revision. */
|
588 |
if (protocol >= 0x200) |
589 |
header[0x210] = 0xB0; |
590 |
|
591 |
/* heap */
|
592 |
if (protocol >= 0x201) { |
593 |
header[0x211] |= 0x80; /* CAN_USE_HEAP */ |
594 |
stw_p(header+0x224, cmdline_addr-real_addr-0x200); |
595 |
} |
596 |
|
597 |
/* load initrd */
|
598 |
if (initrd_filename) {
|
599 |
if (protocol < 0x200) { |
600 |
fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
|
601 |
exit(1);
|
602 |
} |
603 |
|
604 |
fi = fopen(initrd_filename, "rb");
|
605 |
if (!fi) {
|
606 |
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
607 |
initrd_filename); |
608 |
exit(1);
|
609 |
} |
610 |
|
611 |
initrd_size = get_file_size(fi); |
612 |
initrd_addr = (initrd_max-initrd_size) & ~4095;
|
613 |
|
614 |
fprintf(stderr, "qemu: loading initrd (%#x bytes) at 0x" TARGET_FMT_plx
|
615 |
"\n", initrd_size, initrd_addr);
|
616 |
|
617 |
if (!fread_targphys_ok(initrd_addr, initrd_size, fi)) {
|
618 |
fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
|
619 |
initrd_filename); |
620 |
exit(1);
|
621 |
} |
622 |
fclose(fi); |
623 |
|
624 |
stl_p(header+0x218, initrd_addr);
|
625 |
stl_p(header+0x21c, initrd_size);
|
626 |
} |
627 |
|
628 |
/* store the finalized header and load the rest of the kernel */
|
629 |
cpu_physical_memory_write(real_addr, header, 1024);
|
630 |
|
631 |
setup_size = header[0x1f1];
|
632 |
if (setup_size == 0) |
633 |
setup_size = 4;
|
634 |
|
635 |
setup_size = (setup_size+1)*512; |
636 |
kernel_size -= setup_size; /* Size of protected-mode code */
|
637 |
|
638 |
if (!fread_targphys_ok(real_addr+1024, setup_size-1024, f) || |
639 |
!fread_targphys_ok(prot_addr, kernel_size, f)) { |
640 |
fprintf(stderr, "qemu: read error on kernel '%s'\n",
|
641 |
kernel_filename); |
642 |
exit(1);
|
643 |
} |
644 |
fclose(f); |
645 |
|
646 |
/* generate bootsector to set up the initial register state */
|
647 |
real_seg = real_addr >> 4;
|
648 |
seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg; |
649 |
seg[1] = real_seg+0x20; /* CS */ |
650 |
memset(gpr, 0, sizeof gpr); |
651 |
gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */ |
652 |
|
653 |
generate_bootsect(gpr, seg, 0);
|
654 |
} |
655 |
|
656 |
static void main_cpu_reset(void *opaque) |
657 |
{ |
658 |
CPUState *env = opaque; |
659 |
cpu_reset(env); |
660 |
} |
661 |
|
662 |
static const int ide_iobase[2] = { 0x1f0, 0x170 }; |
663 |
static const int ide_iobase2[2] = { 0x3f6, 0x376 }; |
664 |
static const int ide_irq[2] = { 14, 15 }; |
665 |
|
666 |
#define NE2000_NB_MAX 6 |
667 |
|
668 |
static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; |
669 |
static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; |
670 |
|
671 |
static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }; |
672 |
static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 }; |
673 |
|
674 |
static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc }; |
675 |
static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 }; |
676 |
|
677 |
#ifdef HAS_AUDIO
|
678 |
static void audio_init (PCIBus *pci_bus, qemu_irq *pic) |
679 |
{ |
680 |
struct soundhw *c;
|
681 |
int audio_enabled = 0; |
682 |
|
683 |
for (c = soundhw; !audio_enabled && c->name; ++c) {
|
684 |
audio_enabled = c->enabled; |
685 |
} |
686 |
|
687 |
if (audio_enabled) {
|
688 |
AudioState *s; |
689 |
|
690 |
s = AUD_init (); |
691 |
if (s) {
|
692 |
for (c = soundhw; c->name; ++c) {
|
693 |
if (c->enabled) {
|
694 |
if (c->isa) {
|
695 |
c->init.init_isa (s, pic); |
696 |
} |
697 |
else {
|
698 |
if (pci_bus) {
|
699 |
c->init.init_pci (pci_bus, s); |
700 |
} |
701 |
} |
702 |
} |
703 |
} |
704 |
} |
705 |
} |
706 |
} |
707 |
#endif
|
708 |
|
709 |
static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic) |
710 |
{ |
711 |
static int nb_ne2k = 0; |
712 |
|
713 |
if (nb_ne2k == NE2000_NB_MAX)
|
714 |
return;
|
715 |
isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd); |
716 |
nb_ne2k++; |
717 |
} |
718 |
|
719 |
/* PC hardware initialisation */
|
720 |
static void pc_init1(ram_addr_t ram_size, int vga_ram_size, |
721 |
const char *boot_device, DisplayState *ds, |
722 |
const char *kernel_filename, const char *kernel_cmdline, |
723 |
const char *initrd_filename, |
724 |
int pci_enabled, const char *cpu_model) |
725 |
{ |
726 |
char buf[1024]; |
727 |
int ret, linux_boot, i;
|
728 |
ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset; |
729 |
ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
|
730 |
int bios_size, isa_bios_size, vga_bios_size;
|
731 |
PCIBus *pci_bus; |
732 |
int piix3_devfn = -1; |
733 |
CPUState *env; |
734 |
NICInfo *nd; |
735 |
qemu_irq *cpu_irq; |
736 |
qemu_irq *i8259; |
737 |
int index;
|
738 |
BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; |
739 |
BlockDriverState *fd[MAX_FD]; |
740 |
|
741 |
if (ram_size >= 0xe0000000 ) { |
742 |
above_4g_mem_size = ram_size - 0xe0000000;
|
743 |
below_4g_mem_size = 0xe0000000;
|
744 |
} else {
|
745 |
below_4g_mem_size = ram_size; |
746 |
} |
747 |
|
748 |
linux_boot = (kernel_filename != NULL);
|
749 |
|
750 |
/* init CPUs */
|
751 |
if (cpu_model == NULL) { |
752 |
#ifdef TARGET_X86_64
|
753 |
cpu_model = "qemu64";
|
754 |
#else
|
755 |
cpu_model = "qemu32";
|
756 |
#endif
|
757 |
} |
758 |
|
759 |
for(i = 0; i < smp_cpus; i++) { |
760 |
env = cpu_init(cpu_model); |
761 |
if (!env) {
|
762 |
fprintf(stderr, "Unable to find x86 CPU definition\n");
|
763 |
exit(1);
|
764 |
} |
765 |
if (i != 0) |
766 |
env->halted = 1;
|
767 |
if (smp_cpus > 1) { |
768 |
/* XXX: enable it in all cases */
|
769 |
env->cpuid_features |= CPUID_APIC; |
770 |
} |
771 |
qemu_register_reset(main_cpu_reset, env); |
772 |
if (pci_enabled) {
|
773 |
apic_init(env); |
774 |
} |
775 |
} |
776 |
|
777 |
vmport_init(); |
778 |
|
779 |
/* allocate RAM */
|
780 |
ram_addr = qemu_ram_alloc(ram_size); |
781 |
cpu_register_physical_memory(0, below_4g_mem_size, ram_addr);
|
782 |
|
783 |
/* above 4giga memory allocation */
|
784 |
if (above_4g_mem_size > 0) { |
785 |
cpu_register_physical_memory((target_phys_addr_t) 0x100000000ULL,
|
786 |
above_4g_mem_size, |
787 |
ram_addr + below_4g_mem_size); |
788 |
} |
789 |
|
790 |
/* allocate VGA RAM */
|
791 |
vga_ram_addr = qemu_ram_alloc(vga_ram_size); |
792 |
|
793 |
/* BIOS load */
|
794 |
if (bios_name == NULL) |
795 |
bios_name = BIOS_FILENAME; |
796 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name); |
797 |
bios_size = get_image_size(buf); |
798 |
if (bios_size <= 0 || |
799 |
(bios_size % 65536) != 0) { |
800 |
goto bios_error;
|
801 |
} |
802 |
bios_offset = qemu_ram_alloc(bios_size); |
803 |
ret = load_image(buf, phys_ram_base + bios_offset); |
804 |
if (ret != bios_size) {
|
805 |
bios_error:
|
806 |
fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf);
|
807 |
exit(1);
|
808 |
} |
809 |
|
810 |
/* VGA BIOS load */
|
811 |
if (cirrus_vga_enabled) {
|
812 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME); |
813 |
} else {
|
814 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME); |
815 |
} |
816 |
vga_bios_size = get_image_size(buf); |
817 |
if (vga_bios_size <= 0 || vga_bios_size > 65536) |
818 |
goto vga_bios_error;
|
819 |
vga_bios_offset = qemu_ram_alloc(65536);
|
820 |
|
821 |
ret = load_image(buf, phys_ram_base + vga_bios_offset); |
822 |
if (ret != vga_bios_size) {
|
823 |
vga_bios_error:
|
824 |
fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf);
|
825 |
exit(1);
|
826 |
} |
827 |
|
828 |
/* setup basic memory access */
|
829 |
cpu_register_physical_memory(0xc0000, 0x10000, |
830 |
vga_bios_offset | IO_MEM_ROM); |
831 |
|
832 |
/* map the last 128KB of the BIOS in ISA space */
|
833 |
isa_bios_size = bios_size; |
834 |
if (isa_bios_size > (128 * 1024)) |
835 |
isa_bios_size = 128 * 1024; |
836 |
cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size, |
837 |
IO_MEM_UNASSIGNED); |
838 |
cpu_register_physical_memory(0x100000 - isa_bios_size,
|
839 |
isa_bios_size, |
840 |
(bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM); |
841 |
|
842 |
{ |
843 |
ram_addr_t option_rom_offset; |
844 |
int size, offset;
|
845 |
|
846 |
offset = 0;
|
847 |
for (i = 0; i < nb_option_roms; i++) { |
848 |
size = get_image_size(option_rom[i]); |
849 |
if (size < 0) { |
850 |
fprintf(stderr, "Could not load option rom '%s'\n",
|
851 |
option_rom[i]); |
852 |
exit(1);
|
853 |
} |
854 |
if (size > (0x10000 - offset)) |
855 |
goto option_rom_error;
|
856 |
option_rom_offset = qemu_ram_alloc(size); |
857 |
ret = load_image(option_rom[i], phys_ram_base + option_rom_offset); |
858 |
if (ret != size) {
|
859 |
option_rom_error:
|
860 |
fprintf(stderr, "Too many option ROMS\n");
|
861 |
exit(1);
|
862 |
} |
863 |
size = (size + 4095) & ~4095; |
864 |
cpu_register_physical_memory(0xd0000 + offset,
|
865 |
size, option_rom_offset | IO_MEM_ROM); |
866 |
offset += size; |
867 |
} |
868 |
} |
869 |
|
870 |
/* map all the bios at the top of memory */
|
871 |
cpu_register_physical_memory((uint32_t)(-bios_size), |
872 |
bios_size, bios_offset | IO_MEM_ROM); |
873 |
|
874 |
bochs_bios_init(); |
875 |
|
876 |
if (linux_boot)
|
877 |
load_linux(kernel_filename, initrd_filename, kernel_cmdline); |
878 |
|
879 |
cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1); |
880 |
i8259 = i8259_init(cpu_irq[0]);
|
881 |
ferr_irq = i8259[13];
|
882 |
|
883 |
if (pci_enabled) {
|
884 |
pci_bus = i440fx_init(&i440fx_state, i8259); |
885 |
piix3_devfn = piix3_init(pci_bus, -1);
|
886 |
} else {
|
887 |
pci_bus = NULL;
|
888 |
} |
889 |
|
890 |
/* init basic PC hardware */
|
891 |
register_ioport_write(0x80, 1, 1, ioport80_write, NULL); |
892 |
|
893 |
register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL); |
894 |
|
895 |
if (cirrus_vga_enabled) {
|
896 |
if (pci_enabled) {
|
897 |
pci_cirrus_vga_init(pci_bus, |
898 |
ds, phys_ram_base + vga_ram_addr, |
899 |
vga_ram_addr, vga_ram_size); |
900 |
} else {
|
901 |
isa_cirrus_vga_init(ds, phys_ram_base + vga_ram_addr, |
902 |
vga_ram_addr, vga_ram_size); |
903 |
} |
904 |
} else if (vmsvga_enabled) { |
905 |
if (pci_enabled)
|
906 |
pci_vmsvga_init(pci_bus, ds, phys_ram_base + vga_ram_addr, |
907 |
vga_ram_addr, vga_ram_size); |
908 |
else
|
909 |
fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
|
910 |
} else {
|
911 |
if (pci_enabled) {
|
912 |
pci_vga_init(pci_bus, ds, phys_ram_base + vga_ram_addr, |
913 |
vga_ram_addr, vga_ram_size, 0, 0); |
914 |
} else {
|
915 |
isa_vga_init(ds, phys_ram_base + vga_ram_addr, |
916 |
vga_ram_addr, vga_ram_size); |
917 |
} |
918 |
} |
919 |
|
920 |
rtc_state = rtc_init(0x70, i8259[8]); |
921 |
|
922 |
qemu_register_boot_set(pc_boot_set, rtc_state); |
923 |
|
924 |
register_ioport_read(0x92, 1, 1, ioport92_read, NULL); |
925 |
register_ioport_write(0x92, 1, 1, ioport92_write, NULL); |
926 |
|
927 |
if (pci_enabled) {
|
928 |
ioapic = ioapic_init(); |
929 |
} |
930 |
pit = pit_init(0x40, i8259[0]); |
931 |
pcspk_init(pit); |
932 |
if (pci_enabled) {
|
933 |
pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic); |
934 |
} |
935 |
|
936 |
for(i = 0; i < MAX_SERIAL_PORTS; i++) { |
937 |
if (serial_hds[i]) {
|
938 |
serial_init(serial_io[i], i8259[serial_irq[i]], 115200,
|
939 |
serial_hds[i]); |
940 |
} |
941 |
} |
942 |
|
943 |
for(i = 0; i < MAX_PARALLEL_PORTS; i++) { |
944 |
if (parallel_hds[i]) {
|
945 |
parallel_init(parallel_io[i], i8259[parallel_irq[i]], |
946 |
parallel_hds[i]); |
947 |
} |
948 |
} |
949 |
|
950 |
for(i = 0; i < nb_nics; i++) { |
951 |
nd = &nd_table[i]; |
952 |
if (!nd->model) {
|
953 |
if (pci_enabled) {
|
954 |
nd->model = "ne2k_pci";
|
955 |
} else {
|
956 |
nd->model = "ne2k_isa";
|
957 |
} |
958 |
} |
959 |
if (strcmp(nd->model, "ne2k_isa") == 0) { |
960 |
pc_init_ne2k_isa(nd, i8259); |
961 |
} else if (pci_enabled) { |
962 |
if (strcmp(nd->model, "?") == 0) |
963 |
fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
|
964 |
pci_nic_init(pci_bus, nd, -1);
|
965 |
} else if (strcmp(nd->model, "?") == 0) { |
966 |
fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
|
967 |
exit(1);
|
968 |
} else {
|
969 |
fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
|
970 |
exit(1);
|
971 |
} |
972 |
} |
973 |
|
974 |
if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
|
975 |
fprintf(stderr, "qemu: too many IDE bus\n");
|
976 |
exit(1);
|
977 |
} |
978 |
|
979 |
for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) { |
980 |
index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS); |
981 |
if (index != -1) |
982 |
hd[i] = drives_table[index].bdrv; |
983 |
else
|
984 |
hd[i] = NULL;
|
985 |
} |
986 |
|
987 |
if (pci_enabled) {
|
988 |
pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1, i8259);
|
989 |
} else {
|
990 |
for(i = 0; i < MAX_IDE_BUS; i++) { |
991 |
isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]], |
992 |
hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
|
993 |
} |
994 |
} |
995 |
|
996 |
i8042_init(i8259[1], i8259[12], 0x60); |
997 |
DMA_init(0);
|
998 |
#ifdef HAS_AUDIO
|
999 |
audio_init(pci_enabled ? pci_bus : NULL, i8259);
|
1000 |
#endif
|
1001 |
|
1002 |
for(i = 0; i < MAX_FD; i++) { |
1003 |
index = drive_get_index(IF_FLOPPY, 0, i);
|
1004 |
if (index != -1) |
1005 |
fd[i] = drives_table[index].bdrv; |
1006 |
else
|
1007 |
fd[i] = NULL;
|
1008 |
} |
1009 |
floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd); |
1010 |
|
1011 |
cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd); |
1012 |
|
1013 |
if (pci_enabled && usb_enabled) {
|
1014 |
usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
|
1015 |
} |
1016 |
|
1017 |
if (pci_enabled && acpi_enabled) {
|
1018 |
uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */ |
1019 |
i2c_bus *smbus; |
1020 |
|
1021 |
/* TODO: Populate SPD eeprom data. */
|
1022 |
smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, i8259[9]); |
1023 |
for (i = 0; i < 8; i++) { |
1024 |
smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256)); |
1025 |
} |
1026 |
} |
1027 |
|
1028 |
if (i440fx_state) {
|
1029 |
i440fx_init_memory_mappings(i440fx_state); |
1030 |
} |
1031 |
|
1032 |
if (pci_enabled) {
|
1033 |
int max_bus;
|
1034 |
int bus, unit;
|
1035 |
void *scsi;
|
1036 |
|
1037 |
max_bus = drive_get_max_bus(IF_SCSI); |
1038 |
|
1039 |
for (bus = 0; bus <= max_bus; bus++) { |
1040 |
scsi = lsi_scsi_init(pci_bus, -1);
|
1041 |
for (unit = 0; unit < LSI_MAX_DEVS; unit++) { |
1042 |
index = drive_get_index(IF_SCSI, bus, unit); |
1043 |
if (index == -1) |
1044 |
continue;
|
1045 |
lsi_scsi_attach(scsi, drives_table[index].bdrv, unit); |
1046 |
} |
1047 |
} |
1048 |
} |
1049 |
} |
1050 |
|
1051 |
static void pc_init_pci(ram_addr_t ram_size, int vga_ram_size, |
1052 |
const char *boot_device, DisplayState *ds, |
1053 |
const char *kernel_filename, |
1054 |
const char *kernel_cmdline, |
1055 |
const char *initrd_filename, |
1056 |
const char *cpu_model) |
1057 |
{ |
1058 |
pc_init1(ram_size, vga_ram_size, boot_device, ds, |
1059 |
kernel_filename, kernel_cmdline, |
1060 |
initrd_filename, 1, cpu_model);
|
1061 |
} |
1062 |
|
1063 |
static void pc_init_isa(ram_addr_t ram_size, int vga_ram_size, |
1064 |
const char *boot_device, DisplayState *ds, |
1065 |
const char *kernel_filename, |
1066 |
const char *kernel_cmdline, |
1067 |
const char *initrd_filename, |
1068 |
const char *cpu_model) |
1069 |
{ |
1070 |
pc_init1(ram_size, vga_ram_size, boot_device, ds, |
1071 |
kernel_filename, kernel_cmdline, |
1072 |
initrd_filename, 0, cpu_model);
|
1073 |
} |
1074 |
|
1075 |
QEMUMachine pc_machine = { |
1076 |
.name = "pc",
|
1077 |
.desc = "Standard PC",
|
1078 |
.init = pc_init_pci, |
1079 |
.ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE, |
1080 |
}; |
1081 |
|
1082 |
QEMUMachine isapc_machine = { |
1083 |
.name = "isapc",
|
1084 |
.desc = "ISA-only PC",
|
1085 |
.init = pc_init_isa, |
1086 |
.ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE, |
1087 |
}; |