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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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|
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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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|
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#define PC_MAX_BIOS_SIZE (4 * 1024 * 1024) |
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|
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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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|
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#define MAX_IDE_BUS 2 |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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if (!level)
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return;
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while (env) {
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if (apic_accept_pic_intr(env))
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apic_local_deliver(env, APIC_LINT0); |
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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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|
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/* PC cmos mappings */
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|
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#define REG_EQUIPMENT_BYTE 0x14 |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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/* floppy type */
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|
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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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|
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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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|
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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); |
| 314 |
|
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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)); |
| 318 |
if (hd_table[0]) |
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cmos_init_hd(0x19, 0x1b, hd_table[0]); |
| 320 |
if (hd_table[1]) |
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cmos_init_hd(0x1a, 0x24, hd_table[1]); |
| 322 |
|
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val = 0;
|
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for (i = 0; i < 4; i++) { |
| 325 |
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
|
| 328 |
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 |
} |
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val |= translation << (i * 2);
|
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} |
| 346 |
} |
| 347 |
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 |
{
|
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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 */
|
| 382 |
case 0x400: |
| 383 |
case 0x401: |
| 384 |
fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
|
| 385 |
exit(1);
|
| 386 |
case 0x402: |
| 387 |
case 0x403: |
| 388 |
#ifdef DEBUG_BIOS
|
| 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 |
register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL); |
| 422 |
register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL); |
| 423 |
register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL); |
| 424 |
register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL); |
| 425 |
register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL); |
| 426 |
|
| 427 |
register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL); |
| 428 |
register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL); |
| 429 |
register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL); |
| 430 |
register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL); |
| 431 |
} |
| 432 |
|
| 433 |
/* Generate an initial boot sector which sets state and jump to
|
| 434 |
a specified vector */
|
| 435 |
static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip) |
| 436 |
{
|
| 437 |
uint8_t bootsect[512], *p;
|
| 438 |
int i;
|
| 439 |
int hda;
|
| 440 |
|
| 441 |
hda = drive_get_index(IF_IDE, 0, 0); |
| 442 |
if (hda == -1) { |
| 443 |
fprintf(stderr, "A disk image must be given for 'hda' when booting "
|
| 444 |
"a Linux kernel\n");
|
| 445 |
exit(1);
|
| 446 |
} |
| 447 |
|
| 448 |
memset(bootsect, 0, sizeof(bootsect)); |
| 449 |
|
| 450 |
/* Copy the MSDOS partition table if possible */
|
| 451 |
bdrv_read(drives_table[hda].bdrv, 0, bootsect, 1); |
| 452 |
|
| 453 |
/* Make sure we have a partition signature */
|
| 454 |
bootsect[510] = 0x55; |
| 455 |
bootsect[511] = 0xaa; |
| 456 |
|
| 457 |
/* Actual code */
|
| 458 |
p = bootsect; |
| 459 |
*p++ = 0xfa; /* CLI */ |
| 460 |
*p++ = 0xfc; /* CLD */ |
| 461 |
|
| 462 |
for (i = 0; i < 6; i++) { |
| 463 |
if (i == 1) /* Skip CS */ |
| 464 |
continue;
|
| 465 |
|
| 466 |
*p++ = 0xb8; /* MOV AX,imm16 */ |
| 467 |
*p++ = segs[i]; |
| 468 |
*p++ = segs[i] >> 8;
|
| 469 |
*p++ = 0x8e; /* MOV <seg>,AX */ |
| 470 |
*p++ = 0xc0 + (i << 3); |
| 471 |
} |
| 472 |
|
| 473 |
for (i = 0; i < 8; i++) { |
| 474 |
*p++ = 0x66; /* 32-bit operand size */ |
| 475 |
*p++ = 0xb8 + i; /* MOV <reg>,imm32 */ |
| 476 |
*p++ = gpr[i]; |
| 477 |
*p++ = gpr[i] >> 8;
|
| 478 |
*p++ = gpr[i] >> 16;
|
| 479 |
*p++ = gpr[i] >> 24;
|
| 480 |
} |
| 481 |
|
| 482 |
*p++ = 0xea; /* JMP FAR */ |
| 483 |
*p++ = ip; /* IP */
|
| 484 |
*p++ = ip >> 8;
|
| 485 |
*p++ = segs[1]; /* CS */ |
| 486 |
*p++ = segs[1] >> 8; |
| 487 |
|
| 488 |
bdrv_set_boot_sector(drives_table[hda].bdrv, bootsect, sizeof(bootsect));
|
| 489 |
} |
| 490 |
|
| 491 |
static long get_file_size(FILE *f) |
| 492 |
{
|
| 493 |
long where, size;
|
| 494 |
|
| 495 |
/* XXX: on Unix systems, using fstat() probably makes more sense */
|
| 496 |
|
| 497 |
where = ftell(f); |
| 498 |
fseek(f, 0, SEEK_END);
|
| 499 |
size = ftell(f); |
| 500 |
fseek(f, where, SEEK_SET); |
| 501 |
|
| 502 |
return size;
|
| 503 |
} |
| 504 |
|
| 505 |
static void load_linux(const char *kernel_filename, |
| 506 |
const char *initrd_filename, |
| 507 |
const char *kernel_cmdline) |
| 508 |
{
|
| 509 |
uint16_t protocol; |
| 510 |
uint32_t gpr[8];
|
| 511 |
uint16_t seg[6];
|
| 512 |
uint16_t real_seg; |
| 513 |
int setup_size, kernel_size, initrd_size, cmdline_size;
|
| 514 |
uint32_t initrd_max; |
| 515 |
uint8_t header[1024];
|
| 516 |
target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr; |
| 517 |
FILE *f, *fi; |
| 518 |
|
| 519 |
/* Align to 16 bytes as a paranoia measure */
|
| 520 |
cmdline_size = (strlen(kernel_cmdline)+16) & ~15; |
| 521 |
|
| 522 |
/* load the kernel header */
|
| 523 |
f = fopen(kernel_filename, "rb");
|
| 524 |
if (!f || !(kernel_size = get_file_size(f)) ||
|
| 525 |
fread(header, 1, 1024, f) != 1024) { |
| 526 |
fprintf(stderr, "qemu: could not load kernel '%s'\n",
|
| 527 |
kernel_filename); |
| 528 |
exit(1);
|
| 529 |
} |
| 530 |
|
| 531 |
/* kernel protocol version */
|
| 532 |
#if 0
|
| 533 |
fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
|
| 534 |
#endif
|
| 535 |
if (ldl_p(header+0x202) == 0x53726448) |
| 536 |
protocol = lduw_p(header+0x206);
|
| 537 |
else
|
| 538 |
protocol = 0;
|
| 539 |
|
| 540 |
if (protocol < 0x200 || !(header[0x211] & 0x01)) { |
| 541 |
/* Low kernel */
|
| 542 |
real_addr = 0x90000;
|
| 543 |
cmdline_addr = 0x9a000 - cmdline_size;
|
| 544 |
prot_addr = 0x10000;
|
| 545 |
} else if (protocol < 0x202) { |
| 546 |
/* High but ancient kernel */
|
| 547 |
real_addr = 0x90000;
|
| 548 |
cmdline_addr = 0x9a000 - cmdline_size;
|
| 549 |
prot_addr = 0x100000;
|
| 550 |
} else {
|
| 551 |
/* High and recent kernel */
|
| 552 |
real_addr = 0x10000;
|
| 553 |
cmdline_addr = 0x20000;
|
| 554 |
prot_addr = 0x100000;
|
| 555 |
} |
| 556 |
|
| 557 |
#if 0
|
| 558 |
fprintf(stderr,
|
| 559 |
"qemu: real_addr = 0x" TARGET_FMT_plx "\n"
|
| 560 |
"qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n"
|
| 561 |
"qemu: prot_addr = 0x" TARGET_FMT_plx "\n",
|
| 562 |
real_addr,
|
| 563 |
cmdline_addr,
|
| 564 |
prot_addr);
|
| 565 |
#endif
|
| 566 |
|
| 567 |
/* highest address for loading the initrd */
|
| 568 |
if (protocol >= 0x203) |
| 569 |
initrd_max = ldl_p(header+0x22c);
|
| 570 |
else
|
| 571 |
initrd_max = 0x37ffffff;
|
| 572 |
|
| 573 |
if (initrd_max >= ram_size-ACPI_DATA_SIZE)
|
| 574 |
initrd_max = ram_size-ACPI_DATA_SIZE-1;
|
| 575 |
|
| 576 |
/* kernel command line */
|
| 577 |
pstrcpy_targphys(cmdline_addr, 4096, kernel_cmdline);
|
| 578 |
|
| 579 |
if (protocol >= 0x202) { |
| 580 |
stl_p(header+0x228, cmdline_addr);
|
| 581 |
} else {
|
| 582 |
stw_p(header+0x20, 0xA33F); |
| 583 |
stw_p(header+0x22, cmdline_addr-real_addr);
|
| 584 |
} |
| 585 |
|
| 586 |
/* loader type */
|
| 587 |
/* High nybble = B reserved for Qemu; low nybble is revision number.
|
| 588 |
If this code is substantially changed, you may want to consider
|
| 589 |
incrementing the revision. */
|
| 590 |
if (protocol >= 0x200) |
| 591 |
header[0x210] = 0xB0; |
| 592 |
|
| 593 |
/* heap */
|
| 594 |
if (protocol >= 0x201) { |
| 595 |
header[0x211] |= 0x80; /* CAN_USE_HEAP */ |
| 596 |
stw_p(header+0x224, cmdline_addr-real_addr-0x200); |
| 597 |
} |
| 598 |
|
| 599 |
/* load initrd */
|
| 600 |
if (initrd_filename) {
|
| 601 |
if (protocol < 0x200) { |
| 602 |
fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
|
| 603 |
exit(1);
|
| 604 |
} |
| 605 |
|
| 606 |
fi = fopen(initrd_filename, "rb");
|
| 607 |
if (!fi) {
|
| 608 |
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
| 609 |
initrd_filename); |
| 610 |
exit(1);
|
| 611 |
} |
| 612 |
|
| 613 |
initrd_size = get_file_size(fi); |
| 614 |
initrd_addr = (initrd_max-initrd_size) & ~4095;
|
| 615 |
|
| 616 |
fprintf(stderr, "qemu: loading initrd (%#x bytes) at 0x" TARGET_FMT_plx
|
| 617 |
"\n", initrd_size, initrd_addr);
|
| 618 |
|
| 619 |
if (!fread_targphys_ok(initrd_addr, initrd_size, fi)) {
|
| 620 |
fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
|
| 621 |
initrd_filename); |
| 622 |
exit(1);
|
| 623 |
} |
| 624 |
fclose(fi); |
| 625 |
|
| 626 |
stl_p(header+0x218, initrd_addr);
|
| 627 |
stl_p(header+0x21c, initrd_size);
|
| 628 |
} |
| 629 |
|
| 630 |
/* store the finalized header and load the rest of the kernel */
|
| 631 |
cpu_physical_memory_write(real_addr, header, 1024);
|
| 632 |
|
| 633 |
setup_size = header[0x1f1];
|
| 634 |
if (setup_size == 0) |
| 635 |
setup_size = 4;
|
| 636 |
|
| 637 |
setup_size = (setup_size+1)*512; |
| 638 |
kernel_size -= setup_size; /* Size of protected-mode code */
|
| 639 |
|
| 640 |
if (!fread_targphys_ok(real_addr+1024, setup_size-1024, f) || |
| 641 |
!fread_targphys_ok(prot_addr, kernel_size, f)) {
|
| 642 |
fprintf(stderr, "qemu: read error on kernel '%s'\n",
|
| 643 |
kernel_filename); |
| 644 |
exit(1);
|
| 645 |
} |
| 646 |
fclose(f); |
| 647 |
|
| 648 |
/* generate bootsector to set up the initial register state */
|
| 649 |
real_seg = real_addr >> 4;
|
| 650 |
seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg; |
| 651 |
seg[1] = real_seg+0x20; /* CS */ |
| 652 |
memset(gpr, 0, sizeof gpr); |
| 653 |
gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */ |
| 654 |
|
| 655 |
generate_bootsect(gpr, seg, 0);
|
| 656 |
} |
| 657 |
|
| 658 |
static void main_cpu_reset(void *opaque) |
| 659 |
{
|
| 660 |
CPUState *env = opaque; |
| 661 |
cpu_reset(env); |
| 662 |
} |
| 663 |
|
| 664 |
static const int ide_iobase[2] = { 0x1f0, 0x170 }; |
| 665 |
static const int ide_iobase2[2] = { 0x3f6, 0x376 }; |
| 666 |
static const int ide_irq[2] = { 14, 15 }; |
| 667 |
|
| 668 |
#define NE2000_NB_MAX 6 |
| 669 |
|
| 670 |
static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 }; |
| 671 |
static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; |
| 672 |
|
| 673 |
static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }; |
| 674 |
static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 }; |
| 675 |
|
| 676 |
static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc }; |
| 677 |
static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 }; |
| 678 |
|
| 679 |
#ifdef HAS_AUDIO
|
| 680 |
static void audio_init (PCIBus *pci_bus, qemu_irq *pic) |
| 681 |
{
|
| 682 |
struct soundhw *c;
|
| 683 |
int audio_enabled = 0; |
| 684 |
|
| 685 |
for (c = soundhw; !audio_enabled && c->name; ++c) {
|
| 686 |
audio_enabled = c->enabled; |
| 687 |
} |
| 688 |
|
| 689 |
if (audio_enabled) {
|
| 690 |
AudioState *s; |
| 691 |
|
| 692 |
s = AUD_init (); |
| 693 |
if (s) {
|
| 694 |
for (c = soundhw; c->name; ++c) {
|
| 695 |
if (c->enabled) {
|
| 696 |
if (c->isa) {
|
| 697 |
c->init.init_isa (s, pic); |
| 698 |
} |
| 699 |
else {
|
| 700 |
if (pci_bus) {
|
| 701 |
c->init.init_pci (pci_bus, s); |
| 702 |
} |
| 703 |
} |
| 704 |
} |
| 705 |
} |
| 706 |
} |
| 707 |
} |
| 708 |
} |
| 709 |
#endif
|
| 710 |
|
| 711 |
static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic) |
| 712 |
{
|
| 713 |
static int nb_ne2k = 0; |
| 714 |
|
| 715 |
if (nb_ne2k == NE2000_NB_MAX)
|
| 716 |
return;
|
| 717 |
isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd); |
| 718 |
nb_ne2k++; |
| 719 |
} |
| 720 |
|
| 721 |
/* PC hardware initialisation */
|
| 722 |
static void pc_init1(ram_addr_t ram_size, int vga_ram_size, |
| 723 |
const char *boot_device, DisplayState *ds, |
| 724 |
const char *kernel_filename, const char *kernel_cmdline, |
| 725 |
const char *initrd_filename, |
| 726 |
int pci_enabled, const char *cpu_model) |
| 727 |
{
|
| 728 |
char buf[1024]; |
| 729 |
int ret, linux_boot, i;
|
| 730 |
ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset; |
| 731 |
ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
|
| 732 |
int bios_size, isa_bios_size, vga_bios_size;
|
| 733 |
PCIBus *pci_bus; |
| 734 |
int piix3_devfn = -1; |
| 735 |
CPUState *env; |
| 736 |
NICInfo *nd; |
| 737 |
qemu_irq *cpu_irq; |
| 738 |
qemu_irq *i8259; |
| 739 |
int index;
|
| 740 |
BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; |
| 741 |
BlockDriverState *fd[MAX_FD]; |
| 742 |
|
| 743 |
if (ram_size >= 0xe0000000 ) { |
| 744 |
above_4g_mem_size = ram_size - 0xe0000000;
|
| 745 |
below_4g_mem_size = 0xe0000000;
|
| 746 |
} else {
|
| 747 |
below_4g_mem_size = ram_size; |
| 748 |
} |
| 749 |
|
| 750 |
linux_boot = (kernel_filename != NULL);
|
| 751 |
|
| 752 |
/* init CPUs */
|
| 753 |
if (cpu_model == NULL) { |
| 754 |
#ifdef TARGET_X86_64
|
| 755 |
cpu_model = "qemu64";
|
| 756 |
#else
|
| 757 |
cpu_model = "qemu32";
|
| 758 |
#endif
|
| 759 |
} |
| 760 |
|
| 761 |
for(i = 0; i < smp_cpus; i++) { |
| 762 |
env = cpu_init(cpu_model); |
| 763 |
if (!env) {
|
| 764 |
fprintf(stderr, "Unable to find x86 CPU definition\n");
|
| 765 |
exit(1);
|
| 766 |
} |
| 767 |
if (i != 0) |
| 768 |
env->halted = 1;
|
| 769 |
if (smp_cpus > 1) { |
| 770 |
/* XXX: enable it in all cases */
|
| 771 |
env->cpuid_features |= CPUID_APIC; |
| 772 |
} |
| 773 |
qemu_register_reset(main_cpu_reset, env); |
| 774 |
if (pci_enabled) {
|
| 775 |
apic_init(env); |
| 776 |
} |
| 777 |
} |
| 778 |
|
| 779 |
vmport_init(); |
| 780 |
|
| 781 |
/* allocate RAM */
|
| 782 |
ram_addr = qemu_ram_alloc(ram_size); |
| 783 |
cpu_register_physical_memory(0, below_4g_mem_size, ram_addr);
|
| 784 |
|
| 785 |
/* above 4giga memory allocation */
|
| 786 |
if (above_4g_mem_size > 0) { |
| 787 |
cpu_register_physical_memory((target_phys_addr_t) 0x100000000ULL,
|
| 788 |
above_4g_mem_size, |
| 789 |
ram_addr + below_4g_mem_size); |
| 790 |
} |
| 791 |
|
| 792 |
/* allocate VGA RAM */
|
| 793 |
vga_ram_addr = qemu_ram_alloc(vga_ram_size); |
| 794 |
|
| 795 |
/* BIOS load */
|
| 796 |
if (bios_name == NULL) |
| 797 |
bios_name = BIOS_FILENAME; |
| 798 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name); |
| 799 |
bios_size = get_image_size(buf); |
| 800 |
if (bios_size <= 0 || |
| 801 |
(bios_size % 65536) != 0) { |
| 802 |
goto bios_error;
|
| 803 |
} |
| 804 |
bios_offset = qemu_ram_alloc(bios_size); |
| 805 |
ret = load_image(buf, phys_ram_base + bios_offset); |
| 806 |
if (ret != bios_size) {
|
| 807 |
bios_error:
|
| 808 |
fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf);
|
| 809 |
exit(1);
|
| 810 |
} |
| 811 |
|
| 812 |
/* VGA BIOS load */
|
| 813 |
if (cirrus_vga_enabled) {
|
| 814 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME); |
| 815 |
} else {
|
| 816 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME); |
| 817 |
} |
| 818 |
vga_bios_size = get_image_size(buf); |
| 819 |
if (vga_bios_size <= 0 || vga_bios_size > 65536) |
| 820 |
goto vga_bios_error;
|
| 821 |
vga_bios_offset = qemu_ram_alloc(65536);
|
| 822 |
|
| 823 |
ret = load_image(buf, phys_ram_base + vga_bios_offset); |
| 824 |
if (ret != vga_bios_size) {
|
| 825 |
vga_bios_error:
|
| 826 |
fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf);
|
| 827 |
exit(1);
|
| 828 |
} |
| 829 |
|
| 830 |
/* setup basic memory access */
|
| 831 |
cpu_register_physical_memory(0xc0000, 0x10000, |
| 832 |
vga_bios_offset | IO_MEM_ROM); |
| 833 |
|
| 834 |
/* map the last 128KB of the BIOS in ISA space */
|
| 835 |
isa_bios_size = bios_size; |
| 836 |
if (isa_bios_size > (128 * 1024)) |
| 837 |
isa_bios_size = 128 * 1024; |
| 838 |
cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size, |
| 839 |
IO_MEM_UNASSIGNED); |
| 840 |
cpu_register_physical_memory(0x100000 - isa_bios_size,
|
| 841 |
isa_bios_size, |
| 842 |
(bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM); |
| 843 |
|
| 844 |
{
|
| 845 |
ram_addr_t option_rom_offset; |
| 846 |
int size, offset;
|
| 847 |
|
| 848 |
offset = 0;
|
| 849 |
for (i = 0; i < nb_option_roms; i++) { |
| 850 |
size = get_image_size(option_rom[i]); |
| 851 |
if (size < 0) { |
| 852 |
fprintf(stderr, "Could not load option rom '%s'\n",
|
| 853 |
option_rom[i]); |
| 854 |
exit(1);
|
| 855 |
} |
| 856 |
if (size > (0x10000 - offset)) |
| 857 |
goto option_rom_error;
|
| 858 |
option_rom_offset = qemu_ram_alloc(size); |
| 859 |
ret = load_image(option_rom[i], phys_ram_base + option_rom_offset); |
| 860 |
if (ret != size) {
|
| 861 |
option_rom_error:
|
| 862 |
fprintf(stderr, "Too many option ROMS\n");
|
| 863 |
exit(1);
|
| 864 |
} |
| 865 |
size = (size + 4095) & ~4095; |
| 866 |
cpu_register_physical_memory(0xd0000 + offset,
|
| 867 |
size, option_rom_offset | IO_MEM_ROM); |
| 868 |
offset += size; |
| 869 |
} |
| 870 |
} |
| 871 |
|
| 872 |
/* map all the bios at the top of memory */
|
| 873 |
cpu_register_physical_memory((uint32_t)(-bios_size), |
| 874 |
bios_size, bios_offset | IO_MEM_ROM); |
| 875 |
|
| 876 |
bochs_bios_init(); |
| 877 |
|
| 878 |
if (linux_boot)
|
| 879 |
load_linux(kernel_filename, initrd_filename, kernel_cmdline); |
| 880 |
|
| 881 |
cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1); |
| 882 |
i8259 = i8259_init(cpu_irq[0]);
|
| 883 |
ferr_irq = i8259[13];
|
| 884 |
|
| 885 |
if (pci_enabled) {
|
| 886 |
pci_bus = i440fx_init(&i440fx_state, i8259); |
| 887 |
piix3_devfn = piix3_init(pci_bus, -1);
|
| 888 |
} else {
|
| 889 |
pci_bus = NULL;
|
| 890 |
} |
| 891 |
|
| 892 |
/* init basic PC hardware */
|
| 893 |
register_ioport_write(0x80, 1, 1, ioport80_write, NULL); |
| 894 |
|
| 895 |
register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL); |
| 896 |
|
| 897 |
if (cirrus_vga_enabled) {
|
| 898 |
if (pci_enabled) {
|
| 899 |
pci_cirrus_vga_init(pci_bus, |
| 900 |
ds, phys_ram_base + vga_ram_addr, |
| 901 |
vga_ram_addr, vga_ram_size); |
| 902 |
} else {
|
| 903 |
isa_cirrus_vga_init(ds, phys_ram_base + vga_ram_addr, |
| 904 |
vga_ram_addr, vga_ram_size); |
| 905 |
} |
| 906 |
} else if (vmsvga_enabled) { |
| 907 |
if (pci_enabled)
|
| 908 |
pci_vmsvga_init(pci_bus, ds, phys_ram_base + vga_ram_addr, |
| 909 |
vga_ram_addr, vga_ram_size); |
| 910 |
else
|
| 911 |
fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
|
| 912 |
} else {
|
| 913 |
if (pci_enabled) {
|
| 914 |
pci_vga_init(pci_bus, ds, phys_ram_base + vga_ram_addr, |
| 915 |
vga_ram_addr, vga_ram_size, 0, 0); |
| 916 |
} else {
|
| 917 |
isa_vga_init(ds, phys_ram_base + vga_ram_addr, |
| 918 |
vga_ram_addr, vga_ram_size); |
| 919 |
} |
| 920 |
} |
| 921 |
|
| 922 |
rtc_state = rtc_init(0x70, i8259[8]); |
| 923 |
|
| 924 |
qemu_register_boot_set(pc_boot_set, rtc_state); |
| 925 |
|
| 926 |
register_ioport_read(0x92, 1, 1, ioport92_read, NULL); |
| 927 |
register_ioport_write(0x92, 1, 1, ioport92_write, NULL); |
| 928 |
|
| 929 |
if (pci_enabled) {
|
| 930 |
ioapic = ioapic_init(); |
| 931 |
} |
| 932 |
pit = pit_init(0x40, i8259[0]); |
| 933 |
pcspk_init(pit); |
| 934 |
if (pci_enabled) {
|
| 935 |
pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic); |
| 936 |
} |
| 937 |
|
| 938 |
for(i = 0; i < MAX_SERIAL_PORTS; i++) { |
| 939 |
if (serial_hds[i]) {
|
| 940 |
serial_init(serial_io[i], i8259[serial_irq[i]], 115200,
|
| 941 |
serial_hds[i]); |
| 942 |
} |
| 943 |
} |
| 944 |
|
| 945 |
for(i = 0; i < MAX_PARALLEL_PORTS; i++) { |
| 946 |
if (parallel_hds[i]) {
|
| 947 |
parallel_init(parallel_io[i], i8259[parallel_irq[i]], |
| 948 |
parallel_hds[i]); |
| 949 |
} |
| 950 |
} |
| 951 |
|
| 952 |
for(i = 0; i < nb_nics; i++) { |
| 953 |
nd = &nd_table[i]; |
| 954 |
if (!nd->model) {
|
| 955 |
if (pci_enabled) {
|
| 956 |
nd->model = "ne2k_pci";
|
| 957 |
} else {
|
| 958 |
nd->model = "ne2k_isa";
|
| 959 |
} |
| 960 |
} |
| 961 |
if (strcmp(nd->model, "ne2k_isa") == 0) { |
| 962 |
pc_init_ne2k_isa(nd, i8259); |
| 963 |
} else if (pci_enabled) { |
| 964 |
if (strcmp(nd->model, "?") == 0) |
| 965 |
fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
|
| 966 |
pci_nic_init(pci_bus, nd, -1);
|
| 967 |
} else if (strcmp(nd->model, "?") == 0) { |
| 968 |
fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
|
| 969 |
exit(1);
|
| 970 |
} else {
|
| 971 |
fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
|
| 972 |
exit(1);
|
| 973 |
} |
| 974 |
} |
| 975 |
|
| 976 |
if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
|
| 977 |
fprintf(stderr, "qemu: too many IDE bus\n");
|
| 978 |
exit(1);
|
| 979 |
} |
| 980 |
|
| 981 |
for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) { |
| 982 |
index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS); |
| 983 |
if (index != -1) |
| 984 |
hd[i] = drives_table[index].bdrv; |
| 985 |
else
|
| 986 |
hd[i] = NULL;
|
| 987 |
} |
| 988 |
|
| 989 |
if (pci_enabled) {
|
| 990 |
pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1, i8259);
|
| 991 |
} else {
|
| 992 |
for(i = 0; i < MAX_IDE_BUS; i++) { |
| 993 |
isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]], |
| 994 |
hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
|
| 995 |
} |
| 996 |
} |
| 997 |
|
| 998 |
i8042_init(i8259[1], i8259[12], 0x60); |
| 999 |
DMA_init(0);
|
| 1000 |
#ifdef HAS_AUDIO
|
| 1001 |
audio_init(pci_enabled ? pci_bus : NULL, i8259);
|
| 1002 |
#endif
|
| 1003 |
|
| 1004 |
for(i = 0; i < MAX_FD; i++) { |
| 1005 |
index = drive_get_index(IF_FLOPPY, 0, i);
|
| 1006 |
if (index != -1) |
| 1007 |
fd[i] = drives_table[index].bdrv; |
| 1008 |
else
|
| 1009 |
fd[i] = NULL;
|
| 1010 |
} |
| 1011 |
floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd); |
| 1012 |
|
| 1013 |
cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd); |
| 1014 |
|
| 1015 |
if (pci_enabled && usb_enabled) {
|
| 1016 |
usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
|
| 1017 |
} |
| 1018 |
|
| 1019 |
if (pci_enabled && acpi_enabled) {
|
| 1020 |
uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */ |
| 1021 |
i2c_bus *smbus; |
| 1022 |
|
| 1023 |
/* TODO: Populate SPD eeprom data. */
|
| 1024 |
smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, i8259[9]); |
| 1025 |
for (i = 0; i < 8; i++) { |
| 1026 |
smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256)); |
| 1027 |
} |
| 1028 |
} |
| 1029 |
|
| 1030 |
if (i440fx_state) {
|
| 1031 |
i440fx_init_memory_mappings(i440fx_state); |
| 1032 |
} |
| 1033 |
|
| 1034 |
if (pci_enabled) {
|
| 1035 |
int max_bus;
|
| 1036 |
int bus, unit;
|
| 1037 |
void *scsi;
|
| 1038 |
|
| 1039 |
max_bus = drive_get_max_bus(IF_SCSI); |
| 1040 |
|
| 1041 |
for (bus = 0; bus <= max_bus; bus++) { |
| 1042 |
scsi = lsi_scsi_init(pci_bus, -1);
|
| 1043 |
for (unit = 0; unit < LSI_MAX_DEVS; unit++) { |
| 1044 |
index = drive_get_index(IF_SCSI, bus, unit); |
| 1045 |
if (index == -1) |
| 1046 |
continue;
|
| 1047 |
lsi_scsi_attach(scsi, drives_table[index].bdrv, unit); |
| 1048 |
} |
| 1049 |
} |
| 1050 |
} |
| 1051 |
} |
| 1052 |
|
| 1053 |
static void pc_init_pci(ram_addr_t ram_size, int vga_ram_size, |
| 1054 |
const char *boot_device, DisplayState *ds, |
| 1055 |
const char *kernel_filename, |
| 1056 |
const char *kernel_cmdline, |
| 1057 |
const char *initrd_filename, |
| 1058 |
const char *cpu_model) |
| 1059 |
{
|
| 1060 |
pc_init1(ram_size, vga_ram_size, boot_device, ds, |
| 1061 |
kernel_filename, kernel_cmdline, |
| 1062 |
initrd_filename, 1, cpu_model);
|
| 1063 |
} |
| 1064 |
|
| 1065 |
static void pc_init_isa(ram_addr_t ram_size, int vga_ram_size, |
| 1066 |
const char *boot_device, DisplayState *ds, |
| 1067 |
const char *kernel_filename, |
| 1068 |
const char *kernel_cmdline, |
| 1069 |
const char *initrd_filename, |
| 1070 |
const char *cpu_model) |
| 1071 |
{
|
| 1072 |
pc_init1(ram_size, vga_ram_size, boot_device, ds, |
| 1073 |
kernel_filename, kernel_cmdline, |
| 1074 |
initrd_filename, 0, cpu_model);
|
| 1075 |
} |
| 1076 |
|
| 1077 |
QEMUMachine pc_machine = {
|
| 1078 |
.name = "pc",
|
| 1079 |
.desc = "Standard PC",
|
| 1080 |
.init = pc_init_pci, |
| 1081 |
.ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE, |
| 1082 |
}; |
| 1083 |
|
| 1084 |
QEMUMachine isapc_machine = {
|
| 1085 |
.name = "isapc",
|
| 1086 |
.desc = "ISA-only PC",
|
| 1087 |
.init = pc_init_isa, |
| 1088 |
.ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE, |
| 1089 |
}; |