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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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#include "fw_cfg.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 BIOS_CFG_IOPORT 0x510 |
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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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#ifdef 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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|
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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]); |
332 |
if (translation == BIOS_ATA_TRANSLATION_AUTO) {
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bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, §ors); |
334 |
if (cylinders <= 1024 && heads <= 16 && sectors <= 63) { |
335 |
/* 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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} |
341 |
} else {
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translation--; |
343 |
} |
344 |
val |= translation << (i * 2);
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} |
346 |
} |
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rtc_set_memory(s, 0x39, val);
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} |
349 |
|
350 |
void ioport_set_a20(int enable) |
351 |
{ |
352 |
/* XXX: send to all CPUs ? */
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cpu_x86_set_a20(first_cpu, enable); |
354 |
} |
355 |
|
356 |
int ioport_get_a20(void) |
357 |
{ |
358 |
return ((first_cpu->a20_mask >> 20) & 1); |
359 |
} |
360 |
|
361 |
static void ioport92_write(void *opaque, uint32_t addr, uint32_t val) |
362 |
{ |
363 |
ioport_set_a20((val >> 1) & 1); |
364 |
/* XXX: bit 0 is fast reset */
|
365 |
} |
366 |
|
367 |
static uint32_t ioport92_read(void *opaque, uint32_t addr) |
368 |
{ |
369 |
return ioport_get_a20() << 1; |
370 |
} |
371 |
|
372 |
/***********************************************************/
|
373 |
/* Bochs BIOS debug ports */
|
374 |
|
375 |
static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) |
376 |
{ |
377 |
static const char shutdown_str[8] = "Shutdown"; |
378 |
static int shutdown_index = 0; |
379 |
|
380 |
switch(addr) {
|
381 |
/* Bochs BIOS messages */
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382 |
case 0x400: |
383 |
case 0x401: |
384 |
fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
|
385 |
exit(1);
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386 |
case 0x402: |
387 |
case 0x403: |
388 |
#ifdef DEBUG_BIOS
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389 |
fprintf(stderr, "%c", val);
|
390 |
#endif
|
391 |
break;
|
392 |
case 0x8900: |
393 |
/* same as Bochs power off */
|
394 |
if (val == shutdown_str[shutdown_index]) {
|
395 |
shutdown_index++; |
396 |
if (shutdown_index == 8) { |
397 |
shutdown_index = 0;
|
398 |
qemu_system_shutdown_request(); |
399 |
} |
400 |
} else {
|
401 |
shutdown_index = 0;
|
402 |
} |
403 |
break;
|
404 |
|
405 |
/* LGPL'ed VGA BIOS messages */
|
406 |
case 0x501: |
407 |
case 0x502: |
408 |
fprintf(stderr, "VGA BIOS panic, line %d\n", val);
|
409 |
exit(1);
|
410 |
case 0x500: |
411 |
case 0x503: |
412 |
#ifdef DEBUG_BIOS
|
413 |
fprintf(stderr, "%c", val);
|
414 |
#endif
|
415 |
break;
|
416 |
} |
417 |
} |
418 |
|
419 |
static void bochs_bios_init(void) |
420 |
{ |
421 |
void *fw_cfg;
|
422 |
|
423 |
register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL); |
424 |
register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL); |
425 |
register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL); |
426 |
register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL); |
427 |
register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL); |
428 |
|
429 |
register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL); |
430 |
register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL); |
431 |
register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL); |
432 |
register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL); |
433 |
|
434 |
fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0); |
435 |
fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
|
436 |
} |
437 |
|
438 |
/* Generate an initial boot sector which sets state and jump to
|
439 |
a specified vector */
|
440 |
static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip) |
441 |
{ |
442 |
uint8_t bootsect[512], *p;
|
443 |
int i;
|
444 |
int hda;
|
445 |
|
446 |
hda = drive_get_index(IF_IDE, 0, 0); |
447 |
if (hda == -1) { |
448 |
fprintf(stderr, "A disk image must be given for 'hda' when booting "
|
449 |
"a Linux kernel\n(if you really don't want it, use /dev/zero)\n");
|
450 |
exit(1);
|
451 |
} |
452 |
|
453 |
memset(bootsect, 0, sizeof(bootsect)); |
454 |
|
455 |
/* Copy the MSDOS partition table if possible */
|
456 |
bdrv_read(drives_table[hda].bdrv, 0, bootsect, 1); |
457 |
|
458 |
/* Make sure we have a partition signature */
|
459 |
bootsect[510] = 0x55; |
460 |
bootsect[511] = 0xaa; |
461 |
|
462 |
/* Actual code */
|
463 |
p = bootsect; |
464 |
*p++ = 0xfa; /* CLI */ |
465 |
*p++ = 0xfc; /* CLD */ |
466 |
|
467 |
for (i = 0; i < 6; i++) { |
468 |
if (i == 1) /* Skip CS */ |
469 |
continue;
|
470 |
|
471 |
*p++ = 0xb8; /* MOV AX,imm16 */ |
472 |
*p++ = segs[i]; |
473 |
*p++ = segs[i] >> 8;
|
474 |
*p++ = 0x8e; /* MOV <seg>,AX */ |
475 |
*p++ = 0xc0 + (i << 3); |
476 |
} |
477 |
|
478 |
for (i = 0; i < 8; i++) { |
479 |
*p++ = 0x66; /* 32-bit operand size */ |
480 |
*p++ = 0xb8 + i; /* MOV <reg>,imm32 */ |
481 |
*p++ = gpr[i]; |
482 |
*p++ = gpr[i] >> 8;
|
483 |
*p++ = gpr[i] >> 16;
|
484 |
*p++ = gpr[i] >> 24;
|
485 |
} |
486 |
|
487 |
*p++ = 0xea; /* JMP FAR */ |
488 |
*p++ = ip; /* IP */
|
489 |
*p++ = ip >> 8;
|
490 |
*p++ = segs[1]; /* CS */ |
491 |
*p++ = segs[1] >> 8; |
492 |
|
493 |
bdrv_set_boot_sector(drives_table[hda].bdrv, bootsect, sizeof(bootsect));
|
494 |
} |
495 |
|
496 |
static long get_file_size(FILE *f) |
497 |
{ |
498 |
long where, size;
|
499 |
|
500 |
/* XXX: on Unix systems, using fstat() probably makes more sense */
|
501 |
|
502 |
where = ftell(f); |
503 |
fseek(f, 0, SEEK_END);
|
504 |
size = ftell(f); |
505 |
fseek(f, where, SEEK_SET); |
506 |
|
507 |
return size;
|
508 |
} |
509 |
|
510 |
static void load_linux(const char *kernel_filename, |
511 |
const char *initrd_filename, |
512 |
const char *kernel_cmdline) |
513 |
{ |
514 |
uint16_t protocol; |
515 |
uint32_t gpr[8];
|
516 |
uint16_t seg[6];
|
517 |
uint16_t real_seg; |
518 |
int setup_size, kernel_size, initrd_size, cmdline_size;
|
519 |
uint32_t initrd_max; |
520 |
uint8_t header[1024];
|
521 |
target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr; |
522 |
FILE *f, *fi; |
523 |
|
524 |
/* Align to 16 bytes as a paranoia measure */
|
525 |
cmdline_size = (strlen(kernel_cmdline)+16) & ~15; |
526 |
|
527 |
/* load the kernel header */
|
528 |
f = fopen(kernel_filename, "rb");
|
529 |
if (!f || !(kernel_size = get_file_size(f)) ||
|
530 |
fread(header, 1, 1024, f) != 1024) { |
531 |
fprintf(stderr, "qemu: could not load kernel '%s'\n",
|
532 |
kernel_filename); |
533 |
exit(1);
|
534 |
} |
535 |
|
536 |
/* kernel protocol version */
|
537 |
#if 0
|
538 |
fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
|
539 |
#endif
|
540 |
if (ldl_p(header+0x202) == 0x53726448) |
541 |
protocol = lduw_p(header+0x206);
|
542 |
else
|
543 |
protocol = 0;
|
544 |
|
545 |
if (protocol < 0x200 || !(header[0x211] & 0x01)) { |
546 |
/* Low kernel */
|
547 |
real_addr = 0x90000;
|
548 |
cmdline_addr = 0x9a000 - cmdline_size;
|
549 |
prot_addr = 0x10000;
|
550 |
} else if (protocol < 0x202) { |
551 |
/* High but ancient kernel */
|
552 |
real_addr = 0x90000;
|
553 |
cmdline_addr = 0x9a000 - cmdline_size;
|
554 |
prot_addr = 0x100000;
|
555 |
} else {
|
556 |
/* High and recent kernel */
|
557 |
real_addr = 0x10000;
|
558 |
cmdline_addr = 0x20000;
|
559 |
prot_addr = 0x100000;
|
560 |
} |
561 |
|
562 |
#if 0
|
563 |
fprintf(stderr,
|
564 |
"qemu: real_addr = 0x" TARGET_FMT_plx "\n"
|
565 |
"qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n"
|
566 |
"qemu: prot_addr = 0x" TARGET_FMT_plx "\n",
|
567 |
real_addr,
|
568 |
cmdline_addr,
|
569 |
prot_addr);
|
570 |
#endif
|
571 |
|
572 |
/* highest address for loading the initrd */
|
573 |
if (protocol >= 0x203) |
574 |
initrd_max = ldl_p(header+0x22c);
|
575 |
else
|
576 |
initrd_max = 0x37ffffff;
|
577 |
|
578 |
if (initrd_max >= ram_size-ACPI_DATA_SIZE)
|
579 |
initrd_max = ram_size-ACPI_DATA_SIZE-1;
|
580 |
|
581 |
/* kernel command line */
|
582 |
pstrcpy_targphys(cmdline_addr, 4096, kernel_cmdline);
|
583 |
|
584 |
if (protocol >= 0x202) { |
585 |
stl_p(header+0x228, cmdline_addr);
|
586 |
} else {
|
587 |
stw_p(header+0x20, 0xA33F); |
588 |
stw_p(header+0x22, cmdline_addr-real_addr);
|
589 |
} |
590 |
|
591 |
/* loader type */
|
592 |
/* High nybble = B reserved for Qemu; low nybble is revision number.
|
593 |
If this code is substantially changed, you may want to consider
|
594 |
incrementing the revision. */
|
595 |
if (protocol >= 0x200) |
596 |
header[0x210] = 0xB0; |
597 |
|
598 |
/* heap */
|
599 |
if (protocol >= 0x201) { |
600 |
header[0x211] |= 0x80; /* CAN_USE_HEAP */ |
601 |
stw_p(header+0x224, cmdline_addr-real_addr-0x200); |
602 |
} |
603 |
|
604 |
/* load initrd */
|
605 |
if (initrd_filename) {
|
606 |
if (protocol < 0x200) { |
607 |
fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
|
608 |
exit(1);
|
609 |
} |
610 |
|
611 |
fi = fopen(initrd_filename, "rb");
|
612 |
if (!fi) {
|
613 |
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
614 |
initrd_filename); |
615 |
exit(1);
|
616 |
} |
617 |
|
618 |
initrd_size = get_file_size(fi); |
619 |
initrd_addr = (initrd_max-initrd_size) & ~4095;
|
620 |
|
621 |
fprintf(stderr, "qemu: loading initrd (%#x bytes) at 0x" TARGET_FMT_plx
|
622 |
"\n", initrd_size, initrd_addr);
|
623 |
|
624 |
if (!fread_targphys_ok(initrd_addr, initrd_size, fi)) {
|
625 |
fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
|
626 |
initrd_filename); |
627 |
exit(1);
|
628 |
} |
629 |
fclose(fi); |
630 |
|
631 |
stl_p(header+0x218, initrd_addr);
|
632 |
stl_p(header+0x21c, initrd_size);
|
633 |
} |
634 |
|
635 |
/* store the finalized header and load the rest of the kernel */
|
636 |
cpu_physical_memory_write(real_addr, header, 1024);
|
637 |
|
638 |
setup_size = header[0x1f1];
|
639 |
if (setup_size == 0) |
640 |
setup_size = 4;
|
641 |
|
642 |
setup_size = (setup_size+1)*512; |
643 |
kernel_size -= setup_size; /* Size of protected-mode code */
|
644 |
|
645 |
if (!fread_targphys_ok(real_addr+1024, setup_size-1024, f) || |
646 |
!fread_targphys_ok(prot_addr, kernel_size, f)) { |
647 |
fprintf(stderr, "qemu: read error on kernel '%s'\n",
|
648 |
kernel_filename); |
649 |
exit(1);
|
650 |
} |
651 |
fclose(f); |
652 |
|
653 |
/* generate bootsector to set up the initial register state */
|
654 |
real_seg = real_addr >> 4;
|
655 |
seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg; |
656 |
seg[1] = real_seg+0x20; /* CS */ |
657 |
memset(gpr, 0, sizeof gpr); |
658 |
gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */ |
659 |
|
660 |
generate_bootsect(gpr, seg, 0);
|
661 |
} |
662 |
|
663 |
static void main_cpu_reset(void *opaque) |
664 |
{ |
665 |
CPUState *env = opaque; |
666 |
cpu_reset(env); |
667 |
} |
668 |
|
669 |
static const int ide_iobase[2] = { 0x1f0, 0x170 }; |
670 |
static const int ide_iobase2[2] = { 0x3f6, 0x376 }; |
671 |
static const int ide_irq[2] = { 14, 15 }; |
672 |
|
673 |
#define NE2000_NB_MAX 6 |
674 |
|
675 |
static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; |
676 |
static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; |
677 |
|
678 |
static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }; |
679 |
static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 }; |
680 |
|
681 |
static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc }; |
682 |
static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 }; |
683 |
|
684 |
#ifdef HAS_AUDIO
|
685 |
static void audio_init (PCIBus *pci_bus, qemu_irq *pic) |
686 |
{ |
687 |
struct soundhw *c;
|
688 |
int audio_enabled = 0; |
689 |
|
690 |
for (c = soundhw; !audio_enabled && c->name; ++c) {
|
691 |
audio_enabled = c->enabled; |
692 |
} |
693 |
|
694 |
if (audio_enabled) {
|
695 |
AudioState *s; |
696 |
|
697 |
s = AUD_init (); |
698 |
if (s) {
|
699 |
for (c = soundhw; c->name; ++c) {
|
700 |
if (c->enabled) {
|
701 |
if (c->isa) {
|
702 |
c->init.init_isa (s, pic); |
703 |
} |
704 |
else {
|
705 |
if (pci_bus) {
|
706 |
c->init.init_pci (pci_bus, s); |
707 |
} |
708 |
} |
709 |
} |
710 |
} |
711 |
} |
712 |
} |
713 |
} |
714 |
#endif
|
715 |
|
716 |
static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic) |
717 |
{ |
718 |
static int nb_ne2k = 0; |
719 |
|
720 |
if (nb_ne2k == NE2000_NB_MAX)
|
721 |
return;
|
722 |
isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd); |
723 |
nb_ne2k++; |
724 |
} |
725 |
|
726 |
/* PC hardware initialisation */
|
727 |
static void pc_init1(ram_addr_t ram_size, int vga_ram_size, |
728 |
const char *boot_device, DisplayState *ds, |
729 |
const char *kernel_filename, const char *kernel_cmdline, |
730 |
const char *initrd_filename, |
731 |
int pci_enabled, const char *cpu_model) |
732 |
{ |
733 |
char buf[1024]; |
734 |
int ret, linux_boot, i;
|
735 |
ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset; |
736 |
ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
|
737 |
int bios_size, isa_bios_size, vga_bios_size;
|
738 |
PCIBus *pci_bus; |
739 |
int piix3_devfn = -1; |
740 |
CPUState *env; |
741 |
NICInfo *nd; |
742 |
qemu_irq *cpu_irq; |
743 |
qemu_irq *i8259; |
744 |
int index;
|
745 |
BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; |
746 |
BlockDriverState *fd[MAX_FD]; |
747 |
|
748 |
if (ram_size >= 0xe0000000 ) { |
749 |
above_4g_mem_size = ram_size - 0xe0000000;
|
750 |
below_4g_mem_size = 0xe0000000;
|
751 |
} else {
|
752 |
below_4g_mem_size = ram_size; |
753 |
} |
754 |
|
755 |
linux_boot = (kernel_filename != NULL);
|
756 |
|
757 |
/* init CPUs */
|
758 |
if (cpu_model == NULL) { |
759 |
#ifdef TARGET_X86_64
|
760 |
cpu_model = "qemu64";
|
761 |
#else
|
762 |
cpu_model = "qemu32";
|
763 |
#endif
|
764 |
} |
765 |
|
766 |
for(i = 0; i < smp_cpus; i++) { |
767 |
env = cpu_init(cpu_model); |
768 |
if (!env) {
|
769 |
fprintf(stderr, "Unable to find x86 CPU definition\n");
|
770 |
exit(1);
|
771 |
} |
772 |
if (i != 0) |
773 |
env->halted = 1;
|
774 |
if (smp_cpus > 1) { |
775 |
/* XXX: enable it in all cases */
|
776 |
env->cpuid_features |= CPUID_APIC; |
777 |
} |
778 |
qemu_register_reset(main_cpu_reset, env); |
779 |
if (pci_enabled) {
|
780 |
apic_init(env); |
781 |
} |
782 |
} |
783 |
|
784 |
vmport_init(); |
785 |
|
786 |
/* allocate RAM */
|
787 |
ram_addr = qemu_ram_alloc(0xa0000);
|
788 |
cpu_register_physical_memory(0, 0xa0000, ram_addr); |
789 |
|
790 |
/* Allocate, even though we won't register, so we don't break the
|
791 |
* phys_ram_base + PA assumption. This range includes vga (0xa0000 - 0xc0000),
|
792 |
* and some bios areas, which will be registered later
|
793 |
*/
|
794 |
ram_addr = qemu_ram_alloc(0x100000 - 0xa0000); |
795 |
ram_addr = qemu_ram_alloc(below_4g_mem_size - 0x100000);
|
796 |
cpu_register_physical_memory(0x100000,
|
797 |
below_4g_mem_size - 0x100000,
|
798 |
ram_addr); |
799 |
|
800 |
/* above 4giga memory allocation */
|
801 |
if (above_4g_mem_size > 0) { |
802 |
ram_addr = qemu_ram_alloc(above_4g_mem_size); |
803 |
cpu_register_physical_memory(0x100000000ULL,
|
804 |
above_4g_mem_size, |
805 |
ram_addr); |
806 |
} |
807 |
|
808 |
|
809 |
/* allocate VGA RAM */
|
810 |
vga_ram_addr = qemu_ram_alloc(vga_ram_size); |
811 |
|
812 |
/* BIOS load */
|
813 |
if (bios_name == NULL) |
814 |
bios_name = BIOS_FILENAME; |
815 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name); |
816 |
bios_size = get_image_size(buf); |
817 |
if (bios_size <= 0 || |
818 |
(bios_size % 65536) != 0) { |
819 |
goto bios_error;
|
820 |
} |
821 |
bios_offset = qemu_ram_alloc(bios_size); |
822 |
ret = load_image(buf, phys_ram_base + bios_offset); |
823 |
if (ret != bios_size) {
|
824 |
bios_error:
|
825 |
fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf);
|
826 |
exit(1);
|
827 |
} |
828 |
|
829 |
/* VGA BIOS load */
|
830 |
if (cirrus_vga_enabled) {
|
831 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME); |
832 |
} else {
|
833 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME); |
834 |
} |
835 |
vga_bios_size = get_image_size(buf); |
836 |
if (vga_bios_size <= 0 || vga_bios_size > 65536) |
837 |
goto vga_bios_error;
|
838 |
vga_bios_offset = qemu_ram_alloc(65536);
|
839 |
|
840 |
ret = load_image(buf, phys_ram_base + vga_bios_offset); |
841 |
if (ret != vga_bios_size) {
|
842 |
vga_bios_error:
|
843 |
fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf);
|
844 |
exit(1);
|
845 |
} |
846 |
|
847 |
/* setup basic memory access */
|
848 |
cpu_register_physical_memory(0xc0000, 0x10000, |
849 |
vga_bios_offset | IO_MEM_ROM); |
850 |
|
851 |
/* map the last 128KB of the BIOS in ISA space */
|
852 |
isa_bios_size = bios_size; |
853 |
if (isa_bios_size > (128 * 1024)) |
854 |
isa_bios_size = 128 * 1024; |
855 |
cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size, |
856 |
IO_MEM_UNASSIGNED); |
857 |
cpu_register_physical_memory(0x100000 - isa_bios_size,
|
858 |
isa_bios_size, |
859 |
(bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM); |
860 |
|
861 |
{ |
862 |
ram_addr_t option_rom_offset; |
863 |
int size, offset;
|
864 |
|
865 |
offset = 0;
|
866 |
for (i = 0; i < nb_option_roms; i++) { |
867 |
size = get_image_size(option_rom[i]); |
868 |
if (size < 0) { |
869 |
fprintf(stderr, "Could not load option rom '%s'\n",
|
870 |
option_rom[i]); |
871 |
exit(1);
|
872 |
} |
873 |
if (size > (0x10000 - offset)) |
874 |
goto option_rom_error;
|
875 |
option_rom_offset = qemu_ram_alloc(size); |
876 |
ret = load_image(option_rom[i], phys_ram_base + option_rom_offset); |
877 |
if (ret != size) {
|
878 |
option_rom_error:
|
879 |
fprintf(stderr, "Too many option ROMS\n");
|
880 |
exit(1);
|
881 |
} |
882 |
size = (size + 4095) & ~4095; |
883 |
cpu_register_physical_memory(0xd0000 + offset,
|
884 |
size, option_rom_offset | IO_MEM_ROM); |
885 |
offset += size; |
886 |
} |
887 |
} |
888 |
|
889 |
/* map all the bios at the top of memory */
|
890 |
cpu_register_physical_memory((uint32_t)(-bios_size), |
891 |
bios_size, bios_offset | IO_MEM_ROM); |
892 |
|
893 |
bochs_bios_init(); |
894 |
|
895 |
if (linux_boot)
|
896 |
load_linux(kernel_filename, initrd_filename, kernel_cmdline); |
897 |
|
898 |
cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1); |
899 |
i8259 = i8259_init(cpu_irq[0]);
|
900 |
ferr_irq = i8259[13];
|
901 |
|
902 |
if (pci_enabled) {
|
903 |
pci_bus = i440fx_init(&i440fx_state, i8259); |
904 |
piix3_devfn = piix3_init(pci_bus, -1);
|
905 |
} else {
|
906 |
pci_bus = NULL;
|
907 |
} |
908 |
|
909 |
/* init basic PC hardware */
|
910 |
register_ioport_write(0x80, 1, 1, ioport80_write, NULL); |
911 |
|
912 |
register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL); |
913 |
|
914 |
if (cirrus_vga_enabled) {
|
915 |
if (pci_enabled) {
|
916 |
pci_cirrus_vga_init(pci_bus, |
917 |
ds, phys_ram_base + vga_ram_addr, |
918 |
vga_ram_addr, vga_ram_size); |
919 |
} else {
|
920 |
isa_cirrus_vga_init(ds, phys_ram_base + vga_ram_addr, |
921 |
vga_ram_addr, vga_ram_size); |
922 |
} |
923 |
} else if (vmsvga_enabled) { |
924 |
if (pci_enabled)
|
925 |
pci_vmsvga_init(pci_bus, ds, phys_ram_base + vga_ram_addr, |
926 |
vga_ram_addr, vga_ram_size); |
927 |
else
|
928 |
fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
|
929 |
} else {
|
930 |
if (pci_enabled) {
|
931 |
pci_vga_init(pci_bus, ds, phys_ram_base + vga_ram_addr, |
932 |
vga_ram_addr, vga_ram_size, 0, 0); |
933 |
} else {
|
934 |
isa_vga_init(ds, phys_ram_base + vga_ram_addr, |
935 |
vga_ram_addr, vga_ram_size); |
936 |
} |
937 |
} |
938 |
|
939 |
rtc_state = rtc_init(0x70, i8259[8]); |
940 |
|
941 |
qemu_register_boot_set(pc_boot_set, rtc_state); |
942 |
|
943 |
register_ioport_read(0x92, 1, 1, ioport92_read, NULL); |
944 |
register_ioport_write(0x92, 1, 1, ioport92_write, NULL); |
945 |
|
946 |
if (pci_enabled) {
|
947 |
ioapic = ioapic_init(); |
948 |
} |
949 |
pit = pit_init(0x40, i8259[0]); |
950 |
pcspk_init(pit); |
951 |
if (pci_enabled) {
|
952 |
pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic); |
953 |
} |
954 |
|
955 |
for(i = 0; i < MAX_SERIAL_PORTS; i++) { |
956 |
if (serial_hds[i]) {
|
957 |
serial_init(serial_io[i], i8259[serial_irq[i]], 115200,
|
958 |
serial_hds[i]); |
959 |
} |
960 |
} |
961 |
|
962 |
for(i = 0; i < MAX_PARALLEL_PORTS; i++) { |
963 |
if (parallel_hds[i]) {
|
964 |
parallel_init(parallel_io[i], i8259[parallel_irq[i]], |
965 |
parallel_hds[i]); |
966 |
} |
967 |
} |
968 |
|
969 |
for(i = 0; i < nb_nics; i++) { |
970 |
nd = &nd_table[i]; |
971 |
if (!nd->model) {
|
972 |
if (pci_enabled) {
|
973 |
nd->model = "ne2k_pci";
|
974 |
} else {
|
975 |
nd->model = "ne2k_isa";
|
976 |
} |
977 |
} |
978 |
if (strcmp(nd->model, "ne2k_isa") == 0) { |
979 |
pc_init_ne2k_isa(nd, i8259); |
980 |
} else if (pci_enabled) { |
981 |
if (strcmp(nd->model, "?") == 0) |
982 |
fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
|
983 |
pci_nic_init(pci_bus, nd, -1);
|
984 |
} else if (strcmp(nd->model, "?") == 0) { |
985 |
fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
|
986 |
exit(1);
|
987 |
} else {
|
988 |
fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
|
989 |
exit(1);
|
990 |
} |
991 |
} |
992 |
|
993 |
if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
|
994 |
fprintf(stderr, "qemu: too many IDE bus\n");
|
995 |
exit(1);
|
996 |
} |
997 |
|
998 |
for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) { |
999 |
index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS); |
1000 |
if (index != -1) |
1001 |
hd[i] = drives_table[index].bdrv; |
1002 |
else
|
1003 |
hd[i] = NULL;
|
1004 |
} |
1005 |
|
1006 |
if (pci_enabled) {
|
1007 |
pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1, i8259);
|
1008 |
} else {
|
1009 |
for(i = 0; i < MAX_IDE_BUS; i++) { |
1010 |
isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]], |
1011 |
hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
|
1012 |
} |
1013 |
} |
1014 |
|
1015 |
i8042_init(i8259[1], i8259[12], 0x60); |
1016 |
DMA_init(0);
|
1017 |
#ifdef HAS_AUDIO
|
1018 |
audio_init(pci_enabled ? pci_bus : NULL, i8259);
|
1019 |
#endif
|
1020 |
|
1021 |
for(i = 0; i < MAX_FD; i++) { |
1022 |
index = drive_get_index(IF_FLOPPY, 0, i);
|
1023 |
if (index != -1) |
1024 |
fd[i] = drives_table[index].bdrv; |
1025 |
else
|
1026 |
fd[i] = NULL;
|
1027 |
} |
1028 |
floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd); |
1029 |
|
1030 |
cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd); |
1031 |
|
1032 |
if (pci_enabled && usb_enabled) {
|
1033 |
usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
|
1034 |
} |
1035 |
|
1036 |
if (pci_enabled && acpi_enabled) {
|
1037 |
uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */ |
1038 |
i2c_bus *smbus; |
1039 |
|
1040 |
/* TODO: Populate SPD eeprom data. */
|
1041 |
smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, i8259[9]); |
1042 |
for (i = 0; i < 8; i++) { |
1043 |
smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256)); |
1044 |
} |
1045 |
} |
1046 |
|
1047 |
if (i440fx_state) {
|
1048 |
i440fx_init_memory_mappings(i440fx_state); |
1049 |
} |
1050 |
|
1051 |
if (pci_enabled) {
|
1052 |
int max_bus;
|
1053 |
int bus, unit;
|
1054 |
void *scsi;
|
1055 |
|
1056 |
max_bus = drive_get_max_bus(IF_SCSI); |
1057 |
|
1058 |
for (bus = 0; bus <= max_bus; bus++) { |
1059 |
scsi = lsi_scsi_init(pci_bus, -1);
|
1060 |
for (unit = 0; unit < LSI_MAX_DEVS; unit++) { |
1061 |
index = drive_get_index(IF_SCSI, bus, unit); |
1062 |
if (index == -1) |
1063 |
continue;
|
1064 |
lsi_scsi_attach(scsi, drives_table[index].bdrv, unit); |
1065 |
} |
1066 |
} |
1067 |
} |
1068 |
} |
1069 |
|
1070 |
static void pc_init_pci(ram_addr_t ram_size, int vga_ram_size, |
1071 |
const char *boot_device, DisplayState *ds, |
1072 |
const char *kernel_filename, |
1073 |
const char *kernel_cmdline, |
1074 |
const char *initrd_filename, |
1075 |
const char *cpu_model) |
1076 |
{ |
1077 |
pc_init1(ram_size, vga_ram_size, boot_device, ds, |
1078 |
kernel_filename, kernel_cmdline, |
1079 |
initrd_filename, 1, cpu_model);
|
1080 |
} |
1081 |
|
1082 |
static void pc_init_isa(ram_addr_t ram_size, int vga_ram_size, |
1083 |
const char *boot_device, DisplayState *ds, |
1084 |
const char *kernel_filename, |
1085 |
const char *kernel_cmdline, |
1086 |
const char *initrd_filename, |
1087 |
const char *cpu_model) |
1088 |
{ |
1089 |
pc_init1(ram_size, vga_ram_size, boot_device, ds, |
1090 |
kernel_filename, kernel_cmdline, |
1091 |
initrd_filename, 0, cpu_model);
|
1092 |
} |
1093 |
|
1094 |
QEMUMachine pc_machine = { |
1095 |
.name = "pc",
|
1096 |
.desc = "Standard PC",
|
1097 |
.init = pc_init_pci, |
1098 |
.ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE, |
1099 |
}; |
1100 |
|
1101 |
QEMUMachine isapc_machine = { |
1102 |
.name = "isapc",
|
1103 |
.desc = "ISA-only PC",
|
1104 |
.init = pc_init_isa, |
1105 |
.ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE, |
1106 |
}; |