3b4366de39
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4763 c046a42c-6fe2-441c-8c8c-71466251a162
1084 lines
30 KiB
C
1084 lines
30 KiB
C
/*
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* QEMU PC System Emulator
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*
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* Copyright (c) 2003-2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "pc.h"
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#include "fdc.h"
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#include "pci.h"
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#include "block.h"
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#include "sysemu.h"
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#include "audio/audio.h"
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#include "net.h"
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#include "smbus.h"
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#include "boards.h"
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#include "console.h"
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/* output Bochs bios info messages */
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//#define DEBUG_BIOS
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#define BIOS_FILENAME "bios.bin"
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#define VGABIOS_FILENAME "vgabios.bin"
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#define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
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#define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
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/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
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#define ACPI_DATA_SIZE 0x10000
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#define MAX_IDE_BUS 2
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static fdctrl_t *floppy_controller;
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static RTCState *rtc_state;
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static PITState *pit;
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static IOAPICState *ioapic;
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static PCIDevice *i440fx_state;
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static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
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{
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}
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/* MSDOS compatibility mode FPU exception support */
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static qemu_irq ferr_irq;
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/* XXX: add IGNNE support */
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void cpu_set_ferr(CPUX86State *s)
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{
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qemu_irq_raise(ferr_irq);
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}
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static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
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{
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qemu_irq_lower(ferr_irq);
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}
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/* TSC handling */
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uint64_t cpu_get_tsc(CPUX86State *env)
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{
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/* Note: when using kqemu, it is more logical to return the host TSC
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because kqemu does not trap the RDTSC instruction for
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performance reasons */
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#if USE_KQEMU
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if (env->kqemu_enabled) {
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return cpu_get_real_ticks();
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} else
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#endif
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{
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return cpu_get_ticks();
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}
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}
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/* SMM support */
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void cpu_smm_update(CPUState *env)
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{
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if (i440fx_state && env == first_cpu)
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i440fx_set_smm(i440fx_state, (env->hflags >> HF_SMM_SHIFT) & 1);
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}
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/* IRQ handling */
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int cpu_get_pic_interrupt(CPUState *env)
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{
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int intno;
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intno = apic_get_interrupt(env);
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if (intno >= 0) {
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/* set irq request if a PIC irq is still pending */
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/* XXX: improve that */
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pic_update_irq(isa_pic);
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return intno;
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}
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/* read the irq from the PIC */
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if (!apic_accept_pic_intr(env))
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return -1;
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intno = pic_read_irq(isa_pic);
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return intno;
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}
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static void pic_irq_request(void *opaque, int irq, int level)
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{
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CPUState *env = first_cpu;
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if (!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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}
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/* PC cmos mappings */
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#define REG_EQUIPMENT_BYTE 0x14
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static int cmos_get_fd_drive_type(int fd0)
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{
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int val;
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switch (fd0) {
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case 0:
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/* 1.44 Mb 3"5 drive */
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val = 4;
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break;
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case 1:
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/* 2.88 Mb 3"5 drive */
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val = 5;
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break;
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case 2:
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/* 1.2 Mb 5"5 drive */
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val = 2;
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break;
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default:
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val = 0;
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break;
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}
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return val;
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}
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static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
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{
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RTCState *s = rtc_state;
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int cylinders, heads, sectors;
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bdrv_get_geometry_hint(hd, &cylinders, &heads, §ors);
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rtc_set_memory(s, type_ofs, 47);
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rtc_set_memory(s, info_ofs, cylinders);
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rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
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rtc_set_memory(s, info_ofs + 2, heads);
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rtc_set_memory(s, info_ofs + 3, 0xff);
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rtc_set_memory(s, info_ofs + 4, 0xff);
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rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
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rtc_set_memory(s, info_ofs + 6, cylinders);
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rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
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rtc_set_memory(s, info_ofs + 8, sectors);
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}
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/* convert boot_device letter to something recognizable by the bios */
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static int boot_device2nibble(char boot_device)
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{
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switch(boot_device) {
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case 'a':
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case 'b':
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return 0x01; /* floppy boot */
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case 'c':
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return 0x02; /* hard drive boot */
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case 'd':
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return 0x03; /* CD-ROM boot */
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case 'n':
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return 0x04; /* Network boot */
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}
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return 0;
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}
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/* copy/pasted from cmos_init, should be made a general function
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and used there as well */
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static int pc_boot_set(void *opaque, const char *boot_device)
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{
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#define PC_MAX_BOOT_DEVICES 3
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RTCState *s = (RTCState *)opaque;
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int nbds, bds[3] = { 0, };
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int i;
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nbds = strlen(boot_device);
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if (nbds > PC_MAX_BOOT_DEVICES) {
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term_printf("Too many boot devices for PC\n");
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return(1);
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}
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for (i = 0; i < nbds; i++) {
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bds[i] = boot_device2nibble(boot_device[i]);
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if (bds[i] == 0) {
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term_printf("Invalid boot device for PC: '%c'\n",
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boot_device[i]);
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return(1);
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}
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}
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rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
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rtc_set_memory(s, 0x38, (bds[2] << 4));
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return(0);
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}
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/* hd_table must contain 4 block drivers */
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static void cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
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const char *boot_device, BlockDriverState **hd_table)
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{
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RTCState *s = rtc_state;
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int nbds, bds[3] = { 0, };
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int val;
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int fd0, fd1, nb;
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int i;
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/* various important CMOS locations needed by PC/Bochs bios */
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/* memory size */
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val = 640; /* base memory in K */
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rtc_set_memory(s, 0x15, val);
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rtc_set_memory(s, 0x16, val >> 8);
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val = (ram_size / 1024) - 1024;
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if (val > 65535)
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val = 65535;
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rtc_set_memory(s, 0x17, val);
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rtc_set_memory(s, 0x18, val >> 8);
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rtc_set_memory(s, 0x30, val);
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rtc_set_memory(s, 0x31, val >> 8);
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if (above_4g_mem_size) {
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rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16);
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rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24);
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rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32);
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}
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if (ram_size > (16 * 1024 * 1024))
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val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
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else
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val = 0;
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if (val > 65535)
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val = 65535;
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rtc_set_memory(s, 0x34, val);
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rtc_set_memory(s, 0x35, val >> 8);
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/* set the number of CPU */
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rtc_set_memory(s, 0x5f, smp_cpus - 1);
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/* set boot devices, and disable floppy signature check if requested */
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#define PC_MAX_BOOT_DEVICES 3
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nbds = strlen(boot_device);
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if (nbds > PC_MAX_BOOT_DEVICES) {
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fprintf(stderr, "Too many boot devices for PC\n");
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exit(1);
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}
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for (i = 0; i < nbds; i++) {
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bds[i] = boot_device2nibble(boot_device[i]);
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if (bds[i] == 0) {
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fprintf(stderr, "Invalid boot device for PC: '%c'\n",
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boot_device[i]);
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exit(1);
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}
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}
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rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
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rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1));
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/* floppy type */
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fd0 = fdctrl_get_drive_type(floppy_controller, 0);
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fd1 = fdctrl_get_drive_type(floppy_controller, 1);
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val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
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rtc_set_memory(s, 0x10, val);
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val = 0;
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nb = 0;
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if (fd0 < 3)
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nb++;
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if (fd1 < 3)
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nb++;
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switch (nb) {
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case 0:
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break;
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case 1:
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val |= 0x01; /* 1 drive, ready for boot */
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break;
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case 2:
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val |= 0x41; /* 2 drives, ready for boot */
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break;
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}
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val |= 0x02; /* FPU is there */
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val |= 0x04; /* PS/2 mouse installed */
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rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
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/* hard drives */
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rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
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if (hd_table[0])
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cmos_init_hd(0x19, 0x1b, hd_table[0]);
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if (hd_table[1])
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cmos_init_hd(0x1a, 0x24, hd_table[1]);
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val = 0;
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for (i = 0; i < 4; i++) {
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if (hd_table[i]) {
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int cylinders, heads, sectors, translation;
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/* NOTE: bdrv_get_geometry_hint() returns the physical
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geometry. It is always such that: 1 <= sects <= 63, 1
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<= heads <= 16, 1 <= cylinders <= 16383. The BIOS
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geometry can be different if a translation is done. */
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translation = bdrv_get_translation_hint(hd_table[i]);
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if (translation == BIOS_ATA_TRANSLATION_AUTO) {
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bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, §ors);
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if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
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/* No translation. */
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translation = 0;
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} else {
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/* LBA translation. */
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translation = 1;
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}
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} else {
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translation--;
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}
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val |= translation << (i * 2);
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}
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}
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rtc_set_memory(s, 0x39, val);
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}
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void ioport_set_a20(int enable)
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{
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/* XXX: send to all CPUs ? */
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cpu_x86_set_a20(first_cpu, enable);
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}
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int ioport_get_a20(void)
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{
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return ((first_cpu->a20_mask >> 20) & 1);
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}
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static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
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{
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ioport_set_a20((val >> 1) & 1);
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/* XXX: bit 0 is fast reset */
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}
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static uint32_t ioport92_read(void *opaque, uint32_t addr)
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{
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return ioport_get_a20() << 1;
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}
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/***********************************************************/
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/* Bochs BIOS debug ports */
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static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
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{
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static const char shutdown_str[8] = "Shutdown";
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static int shutdown_index = 0;
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switch(addr) {
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/* Bochs BIOS messages */
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case 0x400:
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case 0x401:
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fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
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exit(1);
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case 0x402:
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case 0x403:
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#ifdef DEBUG_BIOS
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fprintf(stderr, "%c", val);
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#endif
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break;
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case 0x8900:
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/* same as Bochs power off */
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if (val == shutdown_str[shutdown_index]) {
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shutdown_index++;
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if (shutdown_index == 8) {
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shutdown_index = 0;
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qemu_system_shutdown_request();
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}
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} else {
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shutdown_index = 0;
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}
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break;
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/* LGPL'ed VGA BIOS messages */
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case 0x501:
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case 0x502:
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fprintf(stderr, "VGA BIOS panic, line %d\n", val);
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exit(1);
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case 0x500:
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case 0x503:
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#ifdef DEBUG_BIOS
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fprintf(stderr, "%c", val);
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#endif
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break;
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}
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}
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static void bochs_bios_init(void)
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{
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register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
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register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
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register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
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register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
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register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
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register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
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register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
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register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
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register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
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}
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/* Generate an initial boot sector which sets state and jump to
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a specified vector */
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static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
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{
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uint8_t bootsect[512], *p;
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int i;
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int hda;
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hda = drive_get_index(IF_IDE, 0, 0);
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if (hda == -1) {
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fprintf(stderr, "A disk image must be given for 'hda' when booting "
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"a Linux kernel\n");
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exit(1);
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}
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memset(bootsect, 0, sizeof(bootsect));
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/* Copy the MSDOS partition table if possible */
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bdrv_read(drives_table[hda].bdrv, 0, bootsect, 1);
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/* Make sure we have a partition signature */
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bootsect[510] = 0x55;
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bootsect[511] = 0xaa;
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/* Actual code */
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p = bootsect;
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*p++ = 0xfa; /* CLI */
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*p++ = 0xfc; /* CLD */
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for (i = 0; i < 6; i++) {
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if (i == 1) /* Skip CS */
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continue;
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*p++ = 0xb8; /* MOV AX,imm16 */
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*p++ = segs[i];
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*p++ = segs[i] >> 8;
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*p++ = 0x8e; /* MOV <seg>,AX */
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*p++ = 0xc0 + (i << 3);
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}
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for (i = 0; i < 8; i++) {
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*p++ = 0x66; /* 32-bit operand size */
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*p++ = 0xb8 + i; /* MOV <reg>,imm32 */
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*p++ = gpr[i];
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*p++ = gpr[i] >> 8;
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*p++ = gpr[i] >> 16;
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*p++ = gpr[i] >> 24;
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}
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*p++ = 0xea; /* JMP FAR */
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*p++ = ip; /* IP */
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*p++ = ip >> 8;
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*p++ = segs[1]; /* CS */
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*p++ = segs[1] >> 8;
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bdrv_set_boot_sector(drives_table[hda].bdrv, bootsect, sizeof(bootsect));
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}
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static long get_file_size(FILE *f)
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{
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long where, size;
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/* XXX: on Unix systems, using fstat() probably makes more sense */
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where = ftell(f);
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fseek(f, 0, SEEK_END);
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size = ftell(f);
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fseek(f, where, SEEK_SET);
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return size;
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}
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|
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static void load_linux(const char *kernel_filename,
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const char *initrd_filename,
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const char *kernel_cmdline)
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{
|
|
uint16_t protocol;
|
|
uint32_t gpr[8];
|
|
uint16_t seg[6];
|
|
uint16_t real_seg;
|
|
int setup_size, kernel_size, initrd_size, cmdline_size;
|
|
uint32_t initrd_max;
|
|
uint8_t header[1024];
|
|
target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr;
|
|
FILE *f, *fi;
|
|
|
|
/* Align to 16 bytes as a paranoia measure */
|
|
cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
|
|
|
|
/* load the kernel header */
|
|
f = fopen(kernel_filename, "rb");
|
|
if (!f || !(kernel_size = get_file_size(f)) ||
|
|
fread(header, 1, 1024, f) != 1024) {
|
|
fprintf(stderr, "qemu: could not load kernel '%s'\n",
|
|
kernel_filename);
|
|
exit(1);
|
|
}
|
|
|
|
/* kernel protocol version */
|
|
#if 0
|
|
fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
|
|
#endif
|
|
if (ldl_p(header+0x202) == 0x53726448)
|
|
protocol = lduw_p(header+0x206);
|
|
else
|
|
protocol = 0;
|
|
|
|
if (protocol < 0x200 || !(header[0x211] & 0x01)) {
|
|
/* Low kernel */
|
|
real_addr = 0x90000;
|
|
cmdline_addr = 0x9a000 - cmdline_size;
|
|
prot_addr = 0x10000;
|
|
} else if (protocol < 0x202) {
|
|
/* High but ancient kernel */
|
|
real_addr = 0x90000;
|
|
cmdline_addr = 0x9a000 - cmdline_size;
|
|
prot_addr = 0x100000;
|
|
} else {
|
|
/* High and recent kernel */
|
|
real_addr = 0x10000;
|
|
cmdline_addr = 0x20000;
|
|
prot_addr = 0x100000;
|
|
}
|
|
|
|
#if 0
|
|
fprintf(stderr,
|
|
"qemu: real_addr = %#zx\n"
|
|
"qemu: cmdline_addr = %#zx\n"
|
|
"qemu: prot_addr = %#zx\n",
|
|
real_addr,
|
|
cmdline_addr,
|
|
prot_addr);
|
|
#endif
|
|
|
|
/* highest address for loading the initrd */
|
|
if (protocol >= 0x203)
|
|
initrd_max = ldl_p(header+0x22c);
|
|
else
|
|
initrd_max = 0x37ffffff;
|
|
|
|
if (initrd_max >= ram_size-ACPI_DATA_SIZE)
|
|
initrd_max = ram_size-ACPI_DATA_SIZE-1;
|
|
|
|
/* kernel command line */
|
|
pstrcpy_targphys(cmdline_addr, 4096, kernel_cmdline);
|
|
|
|
if (protocol >= 0x202) {
|
|
stl_p(header+0x228, cmdline_addr);
|
|
} else {
|
|
stw_p(header+0x20, 0xA33F);
|
|
stw_p(header+0x22, cmdline_addr-real_addr);
|
|
}
|
|
|
|
/* loader type */
|
|
/* High nybble = B reserved for Qemu; low nybble is revision number.
|
|
If this code is substantially changed, you may want to consider
|
|
incrementing the revision. */
|
|
if (protocol >= 0x200)
|
|
header[0x210] = 0xB0;
|
|
|
|
/* heap */
|
|
if (protocol >= 0x201) {
|
|
header[0x211] |= 0x80; /* CAN_USE_HEAP */
|
|
stw_p(header+0x224, cmdline_addr-real_addr-0x200);
|
|
}
|
|
|
|
/* load initrd */
|
|
if (initrd_filename) {
|
|
if (protocol < 0x200) {
|
|
fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
|
|
exit(1);
|
|
}
|
|
|
|
fi = fopen(initrd_filename, "rb");
|
|
if (!fi) {
|
|
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
|
|
initrd_filename);
|
|
exit(1);
|
|
}
|
|
|
|
initrd_size = get_file_size(fi);
|
|
initrd_addr = (initrd_max-initrd_size) & ~4095;
|
|
|
|
fprintf(stderr, "qemu: loading initrd (%#x bytes) at %#zx\n",
|
|
initrd_size, initrd_addr);
|
|
|
|
if (!fread_targphys_ok(initrd_addr, initrd_size, fi)) {
|
|
fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
|
|
initrd_filename);
|
|
exit(1);
|
|
}
|
|
fclose(fi);
|
|
|
|
stl_p(header+0x218, initrd_addr);
|
|
stl_p(header+0x21c, initrd_size);
|
|
}
|
|
|
|
/* store the finalized header and load the rest of the kernel */
|
|
cpu_physical_memory_write(real_addr, header, 1024);
|
|
|
|
setup_size = header[0x1f1];
|
|
if (setup_size == 0)
|
|
setup_size = 4;
|
|
|
|
setup_size = (setup_size+1)*512;
|
|
kernel_size -= setup_size; /* Size of protected-mode code */
|
|
|
|
if (!fread_targphys_ok(real_addr+1024, setup_size-1024, f) ||
|
|
!fread_targphys_ok(prot_addr, kernel_size, f)) {
|
|
fprintf(stderr, "qemu: read error on kernel '%s'\n",
|
|
kernel_filename);
|
|
exit(1);
|
|
}
|
|
fclose(f);
|
|
|
|
/* generate bootsector to set up the initial register state */
|
|
real_seg = real_addr >> 4;
|
|
seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg;
|
|
seg[1] = real_seg+0x20; /* CS */
|
|
memset(gpr, 0, sizeof gpr);
|
|
gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */
|
|
|
|
generate_bootsect(gpr, seg, 0);
|
|
}
|
|
|
|
static void main_cpu_reset(void *opaque)
|
|
{
|
|
CPUState *env = opaque;
|
|
cpu_reset(env);
|
|
}
|
|
|
|
static const int ide_iobase[2] = { 0x1f0, 0x170 };
|
|
static const int ide_iobase2[2] = { 0x3f6, 0x376 };
|
|
static const int ide_irq[2] = { 14, 15 };
|
|
|
|
#define NE2000_NB_MAX 6
|
|
|
|
static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
|
|
static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
|
|
|
|
static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
|
|
static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
|
|
|
|
static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
|
|
static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
|
|
|
|
#ifdef HAS_AUDIO
|
|
static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
|
|
{
|
|
struct soundhw *c;
|
|
int audio_enabled = 0;
|
|
|
|
for (c = soundhw; !audio_enabled && c->name; ++c) {
|
|
audio_enabled = c->enabled;
|
|
}
|
|
|
|
if (audio_enabled) {
|
|
AudioState *s;
|
|
|
|
s = AUD_init ();
|
|
if (s) {
|
|
for (c = soundhw; c->name; ++c) {
|
|
if (c->enabled) {
|
|
if (c->isa) {
|
|
c->init.init_isa (s, pic);
|
|
}
|
|
else {
|
|
if (pci_bus) {
|
|
c->init.init_pci (pci_bus, s);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic)
|
|
{
|
|
static int nb_ne2k = 0;
|
|
|
|
if (nb_ne2k == NE2000_NB_MAX)
|
|
return;
|
|
isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd);
|
|
nb_ne2k++;
|
|
}
|
|
|
|
/* PC hardware initialisation */
|
|
static void pc_init1(ram_addr_t ram_size, int vga_ram_size,
|
|
const char *boot_device, DisplayState *ds,
|
|
const char *kernel_filename, const char *kernel_cmdline,
|
|
const char *initrd_filename,
|
|
int pci_enabled, const char *cpu_model)
|
|
{
|
|
char buf[1024];
|
|
int ret, linux_boot, i;
|
|
ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset;
|
|
ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
|
|
int bios_size, isa_bios_size, vga_bios_size;
|
|
PCIBus *pci_bus;
|
|
int piix3_devfn = -1;
|
|
CPUState *env;
|
|
NICInfo *nd;
|
|
qemu_irq *cpu_irq;
|
|
qemu_irq *i8259;
|
|
int index;
|
|
BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
|
|
BlockDriverState *fd[MAX_FD];
|
|
|
|
if (ram_size >= 0xe0000000 ) {
|
|
above_4g_mem_size = ram_size - 0xe0000000;
|
|
below_4g_mem_size = 0xe0000000;
|
|
} else {
|
|
below_4g_mem_size = ram_size;
|
|
}
|
|
|
|
linux_boot = (kernel_filename != NULL);
|
|
|
|
/* init CPUs */
|
|
if (cpu_model == NULL) {
|
|
#ifdef TARGET_X86_64
|
|
cpu_model = "qemu64";
|
|
#else
|
|
cpu_model = "qemu32";
|
|
#endif
|
|
}
|
|
|
|
for(i = 0; i < smp_cpus; i++) {
|
|
env = cpu_init(cpu_model);
|
|
if (!env) {
|
|
fprintf(stderr, "Unable to find x86 CPU definition\n");
|
|
exit(1);
|
|
}
|
|
if (i != 0)
|
|
env->halted = 1;
|
|
if (smp_cpus > 1) {
|
|
/* XXX: enable it in all cases */
|
|
env->cpuid_features |= CPUID_APIC;
|
|
}
|
|
register_savevm("cpu", i, 5, cpu_save, cpu_load, env);
|
|
qemu_register_reset(main_cpu_reset, env);
|
|
if (pci_enabled) {
|
|
apic_init(env);
|
|
}
|
|
}
|
|
|
|
vmport_init();
|
|
|
|
/* allocate RAM */
|
|
ram_addr = qemu_ram_alloc(ram_size);
|
|
cpu_register_physical_memory(0, below_4g_mem_size, ram_addr);
|
|
|
|
/* above 4giga memory allocation */
|
|
if (above_4g_mem_size > 0) {
|
|
cpu_register_physical_memory(0x100000000ULL, above_4g_mem_size,
|
|
ram_addr + below_4g_mem_size);
|
|
}
|
|
|
|
/* allocate VGA RAM */
|
|
vga_ram_addr = qemu_ram_alloc(vga_ram_size);
|
|
|
|
/* BIOS load */
|
|
if (bios_name == NULL)
|
|
bios_name = BIOS_FILENAME;
|
|
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
|
|
bios_size = get_image_size(buf);
|
|
if (bios_size <= 0 ||
|
|
(bios_size % 65536) != 0) {
|
|
goto bios_error;
|
|
}
|
|
bios_offset = qemu_ram_alloc(bios_size);
|
|
ret = load_image(buf, phys_ram_base + bios_offset);
|
|
if (ret != bios_size) {
|
|
bios_error:
|
|
fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf);
|
|
exit(1);
|
|
}
|
|
|
|
/* VGA BIOS load */
|
|
if (cirrus_vga_enabled) {
|
|
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME);
|
|
} else {
|
|
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
|
|
}
|
|
vga_bios_size = get_image_size(buf);
|
|
if (vga_bios_size <= 0 || vga_bios_size > 65536)
|
|
goto vga_bios_error;
|
|
vga_bios_offset = qemu_ram_alloc(65536);
|
|
|
|
ret = load_image(buf, phys_ram_base + vga_bios_offset);
|
|
if (ret != vga_bios_size) {
|
|
vga_bios_error:
|
|
fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf);
|
|
exit(1);
|
|
}
|
|
|
|
/* setup basic memory access */
|
|
cpu_register_physical_memory(0xc0000, 0x10000,
|
|
vga_bios_offset | IO_MEM_ROM);
|
|
|
|
/* map the last 128KB of the BIOS in ISA space */
|
|
isa_bios_size = bios_size;
|
|
if (isa_bios_size > (128 * 1024))
|
|
isa_bios_size = 128 * 1024;
|
|
cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size,
|
|
IO_MEM_UNASSIGNED);
|
|
cpu_register_physical_memory(0x100000 - isa_bios_size,
|
|
isa_bios_size,
|
|
(bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
|
|
|
|
{
|
|
ram_addr_t option_rom_offset;
|
|
int size, offset;
|
|
|
|
offset = 0;
|
|
for (i = 0; i < nb_option_roms; i++) {
|
|
size = get_image_size(option_rom[i]);
|
|
if (size < 0) {
|
|
fprintf(stderr, "Could not load option rom '%s'\n",
|
|
option_rom[i]);
|
|
exit(1);
|
|
}
|
|
if (size > (0x10000 - offset))
|
|
goto option_rom_error;
|
|
option_rom_offset = qemu_ram_alloc(size);
|
|
ret = load_image(option_rom[i], phys_ram_base + option_rom_offset);
|
|
if (ret != size) {
|
|
option_rom_error:
|
|
fprintf(stderr, "Too many option ROMS\n");
|
|
exit(1);
|
|
}
|
|
size = (size + 4095) & ~4095;
|
|
cpu_register_physical_memory(0xd0000 + offset,
|
|
size, option_rom_offset | IO_MEM_ROM);
|
|
offset += size;
|
|
}
|
|
}
|
|
|
|
/* map all the bios at the top of memory */
|
|
cpu_register_physical_memory((uint32_t)(-bios_size),
|
|
bios_size, bios_offset | IO_MEM_ROM);
|
|
|
|
bochs_bios_init();
|
|
|
|
if (linux_boot)
|
|
load_linux(kernel_filename, initrd_filename, kernel_cmdline);
|
|
|
|
cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1);
|
|
i8259 = i8259_init(cpu_irq[0]);
|
|
ferr_irq = i8259[13];
|
|
|
|
if (pci_enabled) {
|
|
pci_bus = i440fx_init(&i440fx_state, i8259);
|
|
piix3_devfn = piix3_init(pci_bus, -1);
|
|
} else {
|
|
pci_bus = NULL;
|
|
}
|
|
|
|
/* init basic PC hardware */
|
|
register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
|
|
|
|
register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
|
|
|
|
if (cirrus_vga_enabled) {
|
|
if (pci_enabled) {
|
|
pci_cirrus_vga_init(pci_bus,
|
|
ds, phys_ram_base + vga_ram_addr,
|
|
vga_ram_addr, vga_ram_size);
|
|
} else {
|
|
isa_cirrus_vga_init(ds, phys_ram_base + vga_ram_addr,
|
|
vga_ram_addr, vga_ram_size);
|
|
}
|
|
} else if (vmsvga_enabled) {
|
|
if (pci_enabled)
|
|
pci_vmsvga_init(pci_bus, ds, phys_ram_base + vga_ram_addr,
|
|
vga_ram_addr, vga_ram_size);
|
|
else
|
|
fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
|
|
} else {
|
|
if (pci_enabled) {
|
|
pci_vga_init(pci_bus, ds, phys_ram_base + vga_ram_addr,
|
|
vga_ram_addr, vga_ram_size, 0, 0);
|
|
} else {
|
|
isa_vga_init(ds, phys_ram_base + vga_ram_addr,
|
|
vga_ram_addr, vga_ram_size);
|
|
}
|
|
}
|
|
|
|
rtc_state = rtc_init(0x70, i8259[8]);
|
|
|
|
qemu_register_boot_set(pc_boot_set, rtc_state);
|
|
|
|
register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
|
|
register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
|
|
|
|
if (pci_enabled) {
|
|
ioapic = ioapic_init();
|
|
}
|
|
pit = pit_init(0x40, i8259[0]);
|
|
pcspk_init(pit);
|
|
if (pci_enabled) {
|
|
pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic);
|
|
}
|
|
|
|
for(i = 0; i < MAX_SERIAL_PORTS; i++) {
|
|
if (serial_hds[i]) {
|
|
serial_init(serial_io[i], i8259[serial_irq[i]], 115200,
|
|
serial_hds[i]);
|
|
}
|
|
}
|
|
|
|
for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
|
|
if (parallel_hds[i]) {
|
|
parallel_init(parallel_io[i], i8259[parallel_irq[i]],
|
|
parallel_hds[i]);
|
|
}
|
|
}
|
|
|
|
for(i = 0; i < nb_nics; i++) {
|
|
nd = &nd_table[i];
|
|
if (!nd->model) {
|
|
if (pci_enabled) {
|
|
nd->model = "ne2k_pci";
|
|
} else {
|
|
nd->model = "ne2k_isa";
|
|
}
|
|
}
|
|
if (strcmp(nd->model, "ne2k_isa") == 0) {
|
|
pc_init_ne2k_isa(nd, i8259);
|
|
} else if (pci_enabled) {
|
|
if (strcmp(nd->model, "?") == 0)
|
|
fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
|
|
pci_nic_init(pci_bus, nd, -1);
|
|
} else if (strcmp(nd->model, "?") == 0) {
|
|
fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
|
|
exit(1);
|
|
} else {
|
|
fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
|
|
fprintf(stderr, "qemu: too many IDE bus\n");
|
|
exit(1);
|
|
}
|
|
|
|
for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
|
|
index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
|
|
if (index != -1)
|
|
hd[i] = drives_table[index].bdrv;
|
|
else
|
|
hd[i] = NULL;
|
|
}
|
|
|
|
if (pci_enabled) {
|
|
pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1, i8259);
|
|
} else {
|
|
for(i = 0; i < MAX_IDE_BUS; i++) {
|
|
isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
|
|
hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
|
|
}
|
|
}
|
|
|
|
i8042_init(i8259[1], i8259[12], 0x60);
|
|
DMA_init(0);
|
|
#ifdef HAS_AUDIO
|
|
audio_init(pci_enabled ? pci_bus : NULL, i8259);
|
|
#endif
|
|
|
|
for(i = 0; i < MAX_FD; i++) {
|
|
index = drive_get_index(IF_FLOPPY, 0, i);
|
|
if (index != -1)
|
|
fd[i] = drives_table[index].bdrv;
|
|
else
|
|
fd[i] = NULL;
|
|
}
|
|
floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd);
|
|
|
|
cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd);
|
|
|
|
if (pci_enabled && usb_enabled) {
|
|
usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
|
|
}
|
|
|
|
if (pci_enabled && acpi_enabled) {
|
|
uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
|
|
i2c_bus *smbus;
|
|
|
|
/* TODO: Populate SPD eeprom data. */
|
|
smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, i8259[9]);
|
|
for (i = 0; i < 8; i++) {
|
|
smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
|
|
}
|
|
}
|
|
|
|
if (i440fx_state) {
|
|
i440fx_init_memory_mappings(i440fx_state);
|
|
}
|
|
|
|
if (pci_enabled) {
|
|
int max_bus;
|
|
int bus, unit;
|
|
void *scsi;
|
|
|
|
max_bus = drive_get_max_bus(IF_SCSI);
|
|
|
|
for (bus = 0; bus <= max_bus; bus++) {
|
|
scsi = lsi_scsi_init(pci_bus, -1);
|
|
for (unit = 0; unit < LSI_MAX_DEVS; unit++) {
|
|
index = drive_get_index(IF_SCSI, bus, unit);
|
|
if (index == -1)
|
|
continue;
|
|
lsi_scsi_attach(scsi, drives_table[index].bdrv, unit);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void pc_init_pci(ram_addr_t ram_size, int vga_ram_size,
|
|
const char *boot_device, DisplayState *ds,
|
|
const char *kernel_filename,
|
|
const char *kernel_cmdline,
|
|
const char *initrd_filename,
|
|
const char *cpu_model)
|
|
{
|
|
pc_init1(ram_size, vga_ram_size, boot_device, ds,
|
|
kernel_filename, kernel_cmdline,
|
|
initrd_filename, 1, cpu_model);
|
|
}
|
|
|
|
static void pc_init_isa(ram_addr_t ram_size, int vga_ram_size,
|
|
const char *boot_device, DisplayState *ds,
|
|
const char *kernel_filename,
|
|
const char *kernel_cmdline,
|
|
const char *initrd_filename,
|
|
const char *cpu_model)
|
|
{
|
|
pc_init1(ram_size, vga_ram_size, boot_device, ds,
|
|
kernel_filename, kernel_cmdline,
|
|
initrd_filename, 0, cpu_model);
|
|
}
|
|
|
|
QEMUMachine pc_machine = {
|
|
"pc",
|
|
"Standard PC",
|
|
pc_init_pci,
|
|
VGA_RAM_SIZE + PC_MAX_BIOS_SIZE,
|
|
};
|
|
|
|
QEMUMachine isapc_machine = {
|
|
"isapc",
|
|
"ISA-only PC",
|
|
pc_init_isa,
|
|
VGA_RAM_SIZE + PC_MAX_BIOS_SIZE,
|
|
};
|