/*
* QEMU PC System Emulator
- *
+ *
* Copyright (c) 2003-2004 Fabrice Bellard
- *
+ *
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-#include <getopt.h>
-#include <inttypes.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <time.h>
-#include <sys/time.h>
-#include <malloc.h>
-#include <termios.h>
-#include <sys/poll.h>
-#include <errno.h>
-#include <sys/wait.h>
-#include <netinet/in.h>
-
-#include "cpu.h"
#include "vl.h"
/* output Bochs bios info messages */
#define BIOS_FILENAME "bios.bin"
#define VGABIOS_FILENAME "vgabios.bin"
-#define LINUX_BOOT_FILENAME "linux_boot.bin"
+#define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
-#define KERNEL_LOAD_ADDR 0x00100000
-#define INITRD_LOAD_ADDR 0x00400000
-#define KERNEL_PARAMS_ADDR 0x00090000
-#define KERNEL_CMDLINE_ADDR 0x00099000
+/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
+#define ACPI_DATA_SIZE 0x10000
-int speaker_data_on;
-int dummy_refresh_clock;
+static fdctrl_t *floppy_controller;
+static RTCState *rtc_state;
+static PITState *pit;
+static IOAPICState *ioapic;
+static PCIDevice *i440fx_state;
static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
{
}
+/* MSDOS compatibility mode FPU exception support */
+static qemu_irq ferr_irq;
+/* XXX: add IGNNE support */
+void cpu_set_ferr(CPUX86State *s)
+{
+ qemu_irq_raise(ferr_irq);
+}
+
+static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
+{
+ qemu_irq_lower(ferr_irq);
+}
+
+/* TSC handling */
+uint64_t cpu_get_tsc(CPUX86State *env)
+{
+ /* Note: when using kqemu, it is more logical to return the host TSC
+ because kqemu does not trap the RDTSC instruction for
+ performance reasons */
+#if USE_KQEMU
+ if (env->kqemu_enabled) {
+ return cpu_get_real_ticks();
+ } else
+#endif
+ {
+ return cpu_get_ticks();
+ }
+}
+
+/* SMM support */
+void cpu_smm_update(CPUState *env)
+{
+ if (i440fx_state && env == first_cpu)
+ i440fx_set_smm(i440fx_state, (env->hflags >> HF_SMM_SHIFT) & 1);
+}
+
+
+/* IRQ handling */
+int cpu_get_pic_interrupt(CPUState *env)
+{
+ int intno;
+
+ intno = apic_get_interrupt(env);
+ if (intno >= 0) {
+ /* set irq request if a PIC irq is still pending */
+ /* XXX: improve that */
+ pic_update_irq(isa_pic);
+ return intno;
+ }
+ /* read the irq from the PIC */
+ intno = pic_read_irq(isa_pic);
+ return intno;
+}
+
+static void pic_irq_request(void *opaque, int irq, int level)
+{
+ CPUState *env = opaque;
+ if (level)
+ cpu_interrupt(env, CPU_INTERRUPT_HARD);
+ else
+ cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
+}
+
+/* PC cmos mappings */
+
#define REG_EQUIPMENT_BYTE 0x14
-static void cmos_init(int ram_size, int boot_device)
+static int cmos_get_fd_drive_type(int fd0)
+{
+ int val;
+
+ switch (fd0) {
+ case 0:
+ /* 1.44 Mb 3"5 drive */
+ val = 4;
+ break;
+ case 1:
+ /* 2.88 Mb 3"5 drive */
+ val = 5;
+ break;
+ case 2:
+ /* 1.2 Mb 5"5 drive */
+ val = 2;
+ break;
+ default:
+ val = 0;
+ break;
+ }
+ return val;
+}
+
+static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
+{
+ RTCState *s = rtc_state;
+ int cylinders, heads, sectors;
+ bdrv_get_geometry_hint(hd, &cylinders, &heads, §ors);
+ rtc_set_memory(s, type_ofs, 47);
+ rtc_set_memory(s, info_ofs, cylinders);
+ rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
+ rtc_set_memory(s, info_ofs + 2, heads);
+ rtc_set_memory(s, info_ofs + 3, 0xff);
+ rtc_set_memory(s, info_ofs + 4, 0xff);
+ rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
+ rtc_set_memory(s, info_ofs + 6, cylinders);
+ rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
+ rtc_set_memory(s, info_ofs + 8, sectors);
+}
+
+/* hd_table must contain 4 block drivers */
+static void cmos_init(int ram_size, int boot_device, BlockDriverState **hd_table)
{
- RTCState *s = &rtc_state;
+ RTCState *s = rtc_state;
int val;
int fd0, fd1, nb;
-
- /* various important CMOS locations needed by PC/Bochs bios */
+ int i;
- s->cmos_data[REG_EQUIPMENT_BYTE] = 0x02; /* FPU is there */
- s->cmos_data[REG_EQUIPMENT_BYTE] |= 0x04; /* PS/2 mouse installed */
+ /* various important CMOS locations needed by PC/Bochs bios */
/* memory size */
+ val = 640; /* base memory in K */
+ rtc_set_memory(s, 0x15, val);
+ rtc_set_memory(s, 0x16, val >> 8);
+
val = (ram_size / 1024) - 1024;
if (val > 65535)
val = 65535;
- s->cmos_data[0x17] = val;
- s->cmos_data[0x18] = val >> 8;
- s->cmos_data[0x30] = val;
- s->cmos_data[0x31] = val >> 8;
-
- val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
+ rtc_set_memory(s, 0x17, val);
+ rtc_set_memory(s, 0x18, val >> 8);
+ rtc_set_memory(s, 0x30, val);
+ rtc_set_memory(s, 0x31, val >> 8);
+
+ if (ram_size > (16 * 1024 * 1024))
+ val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
+ else
+ val = 0;
if (val > 65535)
val = 65535;
- s->cmos_data[0x34] = val;
- s->cmos_data[0x35] = val >> 8;
-
+ rtc_set_memory(s, 0x34, val);
+ rtc_set_memory(s, 0x35, val >> 8);
+
switch(boot_device) {
case 'a':
case 'b':
- s->cmos_data[0x3d] = 0x01; /* floppy boot */
+ rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */
+ if (!fd_bootchk)
+ rtc_set_memory(s, 0x38, 0x01); /* disable signature check */
break;
default:
case 'c':
- s->cmos_data[0x3d] = 0x02; /* hard drive boot */
+ rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */
break;
case 'd':
- s->cmos_data[0x3d] = 0x03; /* CD-ROM boot */
+ rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */
+ break;
+ case 'n':
+ rtc_set_memory(s, 0x3d, 0x04); /* Network boot */
break;
}
/* floppy type */
- fd0 = fdctrl_get_drive_type(0);
- fd1 = fdctrl_get_drive_type(1);
+ fd0 = fdctrl_get_drive_type(floppy_controller, 0);
+ fd1 = fdctrl_get_drive_type(floppy_controller, 1);
- s->cmos_data[0x10] = 0;
- switch (fd0) {
- case 0:
- /* 1.44 Mb 3"5 drive */
- s->cmos_data[0x10] |= 0x40;
- break;
- case 1:
- /* 2.88 Mb 3"5 drive */
- s->cmos_data[0x10] |= 0x60;
- break;
- case 2:
- /* 1.2 Mb 5"5 drive */
- s->cmos_data[0x10] |= 0x20;
- break;
- }
- switch (fd1) {
- case 0:
- /* 1.44 Mb 3"5 drive */
- s->cmos_data[0x10] |= 0x04;
- break;
- case 1:
- /* 2.88 Mb 3"5 drive */
- s->cmos_data[0x10] |= 0x06;
- break;
- case 2:
- /* 1.2 Mb 5"5 drive */
- s->cmos_data[0x10] |= 0x02;
- break;
- }
+ val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
+ rtc_set_memory(s, 0x10, val);
+
+ val = 0;
nb = 0;
if (fd0 < 3)
nb++;
case 0:
break;
case 1:
- s->cmos_data[REG_EQUIPMENT_BYTE] |= 0x01; /* 1 drive, ready for boot */
+ val |= 0x01; /* 1 drive, ready for boot */
break;
case 2:
- s->cmos_data[REG_EQUIPMENT_BYTE] |= 0x41; /* 2 drives, ready for boot */
+ val |= 0x41; /* 2 drives, ready for boot */
break;
}
+ val |= 0x02; /* FPU is there */
+ val |= 0x04; /* PS/2 mouse installed */
+ rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
+
+ /* hard drives */
+
+ rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
+ if (hd_table[0])
+ cmos_init_hd(0x19, 0x1b, hd_table[0]);
+ if (hd_table[1])
+ cmos_init_hd(0x1a, 0x24, hd_table[1]);
+
+ val = 0;
+ for (i = 0; i < 4; i++) {
+ if (hd_table[i]) {
+ int cylinders, heads, sectors, translation;
+ /* NOTE: bdrv_get_geometry_hint() returns the physical
+ geometry. It is always such that: 1 <= sects <= 63, 1
+ <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
+ geometry can be different if a translation is done. */
+ translation = bdrv_get_translation_hint(hd_table[i]);
+ if (translation == BIOS_ATA_TRANSLATION_AUTO) {
+ bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, §ors);
+ if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
+ /* No translation. */
+ translation = 0;
+ } else {
+ /* LBA translation. */
+ translation = 1;
+ }
+ } else {
+ translation--;
+ }
+ val |= translation << (i * 2);
+ }
+ }
+ rtc_set_memory(s, 0x39, val);
}
-static void speaker_ioport_write(void *opaque, uint32_t addr, uint32_t val)
+void ioport_set_a20(int enable)
{
- speaker_data_on = (val >> 1) & 1;
- pit_set_gate(&pit_channels[2], val & 1);
+ /* XXX: send to all CPUs ? */
+ cpu_x86_set_a20(first_cpu, enable);
}
-static uint32_t speaker_ioport_read(void *opaque, uint32_t addr)
+int ioport_get_a20(void)
{
- int out;
- out = pit_get_out(&pit_channels[2]);
- dummy_refresh_clock ^= 1;
- return (speaker_data_on << 1) | pit_channels[2].gate | (out << 5) |
- (dummy_refresh_clock << 4);
+ return ((first_cpu->a20_mask >> 20) & 1);
+}
+
+static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
+{
+ ioport_set_a20((val >> 1) & 1);
+ /* XXX: bit 0 is fast reset */
+}
+
+static uint32_t ioport92_read(void *opaque, uint32_t addr)
+{
+ return ioport_get_a20() << 1;
}
/***********************************************************/
void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
{
+ static const char shutdown_str[8] = "Shutdown";
+ static int shutdown_index = 0;
+
switch(addr) {
/* Bochs BIOS messages */
case 0x400:
fprintf(stderr, "%c", val);
#endif
break;
+ case 0x8900:
+ /* same as Bochs power off */
+ if (val == shutdown_str[shutdown_index]) {
+ shutdown_index++;
+ if (shutdown_index == 8) {
+ shutdown_index = 0;
+ qemu_system_shutdown_request();
+ }
+ } else {
+ shutdown_index = 0;
+ }
+ break;
/* LGPL'ed VGA BIOS messages */
case 0x501:
register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
+ register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
}
+/* Generate an initial boot sector which sets state and jump to
+ a specified vector */
+static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
+{
+ uint8_t bootsect[512], *p;
+ int i;
+
+ if (bs_table[0] == NULL) {
+ fprintf(stderr, "A disk image must be given for 'hda' when booting "
+ "a Linux kernel\n");
+ exit(1);
+ }
+
+ memset(bootsect, 0, sizeof(bootsect));
-int load_kernel(const char *filename, uint8_t *addr,
+ /* Copy the MSDOS partition table if possible */
+ bdrv_read(bs_table[0], 0, bootsect, 1);
+
+ /* Make sure we have a partition signature */
+ bootsect[510] = 0x55;
+ bootsect[511] = 0xaa;
+
+ /* Actual code */
+ p = bootsect;
+ *p++ = 0xfa; /* CLI */
+ *p++ = 0xfc; /* CLD */
+
+ for (i = 0; i < 6; i++) {
+ if (i == 1) /* Skip CS */
+ continue;
+
+ *p++ = 0xb8; /* MOV AX,imm16 */
+ *p++ = segs[i];
+ *p++ = segs[i] >> 8;
+ *p++ = 0x8e; /* MOV <seg>,AX */
+ *p++ = 0xc0 + (i << 3);
+ }
+
+ for (i = 0; i < 8; i++) {
+ *p++ = 0x66; /* 32-bit operand size */
+ *p++ = 0xb8 + i; /* MOV <reg>,imm32 */
+ *p++ = gpr[i];
+ *p++ = gpr[i] >> 8;
+ *p++ = gpr[i] >> 16;
+ *p++ = gpr[i] >> 24;
+ }
+
+ *p++ = 0xea; /* JMP FAR */
+ *p++ = ip; /* IP */
+ *p++ = ip >> 8;
+ *p++ = segs[1]; /* CS */
+ *p++ = segs[1] >> 8;
+
+ bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect));
+}
+
+int load_kernel(const char *filename, uint8_t *addr,
uint8_t *real_addr)
{
int fd, size;
int setup_sects;
- fd = open(filename, O_RDONLY);
+ fd = open(filename, O_RDONLY | O_BINARY);
if (fd < 0)
return -1;
setup_sects = real_addr[0x1F1];
if (!setup_sects)
setup_sects = 4;
- if (read(fd, real_addr + 512, setup_sects * 512) !=
+ if (read(fd, real_addr + 512, setup_sects * 512) !=
setup_sects * 512)
goto fail;
-
+
/* load 32 bit code */
size = read(fd, addr, 16 * 1024 * 1024);
if (size < 0)
return -1;
}
+static long get_file_size(FILE *f)
+{
+ long where, size;
+
+ /* XXX: on Unix systems, using fstat() probably makes more sense */
+
+ where = ftell(f);
+ fseek(f, 0, SEEK_END);
+ size = ftell(f);
+ fseek(f, where, SEEK_SET);
+
+ return size;
+}
+
+static void load_linux(const char *kernel_filename,
+ const char *initrd_filename,
+ const char *kernel_cmdline)
+{
+ 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];
+ uint8_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 */
+ fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
+ if (ldl_p(header+0x202) == 0x53726448)
+ protocol = lduw_p(header+0x206);
+ else
+ protocol = 0;
+
+ if (protocol < 0x200 || !(header[0x211] & 0x01)) {
+ /* Low kernel */
+ real_addr = phys_ram_base + 0x90000;
+ cmdline_addr = phys_ram_base + 0x9a000 - cmdline_size;
+ prot_addr = phys_ram_base + 0x10000;
+ } else if (protocol < 0x202) {
+ /* High but ancient kernel */
+ real_addr = phys_ram_base + 0x90000;
+ cmdline_addr = phys_ram_base + 0x9a000 - cmdline_size;
+ prot_addr = phys_ram_base + 0x100000;
+ } else {
+ /* High and recent kernel */
+ real_addr = phys_ram_base + 0x10000;
+ cmdline_addr = phys_ram_base + 0x20000;
+ prot_addr = phys_ram_base + 0x100000;
+ }
+
+ fprintf(stderr,
+ "qemu: real_addr = %#zx\n"
+ "qemu: cmdline_addr = %#zx\n"
+ "qemu: prot_addr = %#zx\n",
+ real_addr-phys_ram_base,
+ cmdline_addr-phys_ram_base,
+ prot_addr-phys_ram_base);
+
+ /* 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(cmdline_addr, 4096, kernel_cmdline);
+
+ if (protocol >= 0x202) {
+ stl_p(header+0x228, cmdline_addr-phys_ram_base);
+ } 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 = phys_ram_base + ((initrd_max-initrd_size) & ~4095);
+
+ fprintf(stderr, "qemu: loading initrd (%#x bytes) at %#zx\n",
+ initrd_size, initrd_addr-phys_ram_base);
+
+ if (fread(initrd_addr, 1, initrd_size, fi) != initrd_size) {
+ fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
+ initrd_filename);
+ exit(1);
+ }
+ fclose(fi);
+
+ stl_p(header+0x218, initrd_addr-phys_ram_base);
+ stl_p(header+0x21c, initrd_size);
+ }
+
+ /* store the finalized header and load the rest of the kernel */
+ memcpy(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(real_addr+1024, 1, setup_size-1024, f) != setup_size-1024 ||
+ fread(prot_addr, 1, kernel_size, f) != kernel_size) {
+ 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-phys_ram_base) >> 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 uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
+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 */
-void pc_init(int ram_size, int vga_ram_size, int boot_device,
- DisplayState *ds, const char **fd_filename, int snapshot,
- const char *kernel_filename, const char *kernel_cmdline,
- const char *initrd_filename)
+static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
+ DisplayState *ds, const char **fd_filename, int snapshot,
+ const char *kernel_filename, const char *kernel_cmdline,
+ const char *initrd_filename,
+ int pci_enabled)
{
char buf[1024];
- int ret, linux_boot, initrd_size, i, nb_nics1, fd;
+ int ret, linux_boot, i;
+ ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset;
+ 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;
linux_boot = (kernel_filename != NULL);
+ /* init CPUs */
+ for(i = 0; i < smp_cpus; i++) {
+ env = cpu_init();
+ if (i != 0)
+ env->hflags |= HF_HALTED_MASK;
+ if (smp_cpus > 1) {
+ /* XXX: enable it in all cases */
+ env->cpuid_features |= CPUID_APIC;
+ }
+ register_savevm("cpu", i, 4, cpu_save, cpu_load, env);
+ qemu_register_reset(main_cpu_reset, env);
+ if (pci_enabled) {
+ apic_init(env);
+ }
+ vmport_init(env);
+ }
+
/* allocate RAM */
- cpu_register_physical_memory(0, ram_size, 0);
+ ram_addr = qemu_ram_alloc(ram_size);
+ cpu_register_physical_memory(0, ram_size, ram_addr);
+
+ /* allocate VGA RAM */
+ vga_ram_addr = qemu_ram_alloc(vga_ram_size);
/* BIOS load */
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
- ret = load_image(buf, phys_ram_base + 0x000f0000);
- if (ret != 0x10000) {
- fprintf(stderr, "qemu: could not load PC bios '%s'\n", buf);
+ 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 */
- snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
- ret = load_image(buf, phys_ram_base + 0x000c0000);
-
+ 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, 0xc0000 | IO_MEM_ROM);
- cpu_register_physical_memory(0xf0000, 0x10000, 0xf0000 | IO_MEM_ROM);
-
+ 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) {
- uint8_t bootsect[512];
+ if (linux_boot)
+ load_linux(kernel_filename, initrd_filename, kernel_cmdline);
- if (bs_table[0] == NULL) {
- fprintf(stderr, "A disk image must be given for 'hda' when booting a Linux kernel\n");
- exit(1);
+ cpu_irq = qemu_allocate_irqs(pic_irq_request, first_cpu, 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);
}
- snprintf(buf, sizeof(buf), "%s/%s", bios_dir, LINUX_BOOT_FILENAME);
- ret = load_image(buf, bootsect);
- if (ret != sizeof(bootsect)) {
- fprintf(stderr, "qemu: could not load linux boot sector '%s'\n",
- buf);
- exit(1);
+ } else if (vmsvga_enabled) {
+ if (pci_enabled)
+ pci_vmsvga_init(pci_bus, ds, phys_ram_base + ram_size,
+ ram_size, 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);
}
+ }
- bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect));
+ rtc_state = rtc_init(0x70, i8259[8]);
- /* now we can load the kernel */
- ret = load_kernel(kernel_filename,
- phys_ram_base + KERNEL_LOAD_ADDR,
- phys_ram_base + KERNEL_PARAMS_ADDR);
- if (ret < 0) {
- fprintf(stderr, "qemu: could not load kernel '%s'\n",
- kernel_filename);
- exit(1);
+ 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]], serial_hds[i]);
}
-
- /* load initrd */
- initrd_size = 0;
- if (initrd_filename) {
- initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
- if (initrd_size < 0) {
- fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
- initrd_filename);
- exit(1);
+ }
+
+ 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 (initrd_size > 0) {
- stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x218, INITRD_LOAD_ADDR);
- stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x21c, initrd_size);
+ 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);
}
- pstrcpy(phys_ram_base + KERNEL_CMDLINE_ADDR, 4096,
- kernel_cmdline);
- stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x20, 0xA33F);
- stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x22,
- KERNEL_CMDLINE_ADDR - KERNEL_PARAMS_ADDR);
- /* loader type */
- stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x210, 0x01);
}
- /* init basic PC hardware */
- register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
+ if (pci_enabled) {
+ pci_piix3_ide_init(pci_bus, bs_table, piix3_devfn + 1, i8259);
+ } else {
+ for(i = 0; i < 2; i++) {
+ isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
+ bs_table[2 * i], bs_table[2 * i + 1]);
+ }
+ }
+
+ i8042_init(i8259[1], i8259[12], 0x60);
+ DMA_init(0);
+#ifdef HAS_AUDIO
+ audio_init(pci_enabled ? pci_bus : NULL, i8259);
+#endif
- vga_initialize(ds, phys_ram_base + ram_size, ram_size,
- vga_ram_size);
+ floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd_table);
- rtc_init(0x70, 8);
- register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
- register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
+ cmos_init(ram_size, boot_device, bs_table);
- pic_init();
- pit_init(0x40);
+ if (pci_enabled && usb_enabled) {
+ usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
+ }
- fd = serial_open_device();
- serial_init(0x3f8, 4, fd);
+ if (pci_enabled && acpi_enabled) {
+ uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
+ i2c_bus *smbus;
- nb_nics1 = nb_nics;
- if (nb_nics1 > NE2000_NB_MAX)
- nb_nics1 = NE2000_NB_MAX;
- for(i = 0; i < nb_nics1; i++) {
- ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
+ /* TODO: Populate SPD eeprom data. */
+ smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100);
+ for (i = 0; i < 8; i++) {
+ smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
+ }
}
- for(i = 0; i < 2; i++) {
- ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
- bs_table[2 * i], bs_table[2 * i + 1]);
+ if (i440fx_state) {
+ i440fx_init_memory_mappings(i440fx_state);
+ }
+#if 0
+ /* ??? Need to figure out some way for the user to
+ specify SCSI devices. */
+ if (pci_enabled) {
+ void *scsi;
+ BlockDriverState *bdrv;
+
+ scsi = lsi_scsi_init(pci_bus, -1);
+ bdrv = bdrv_new("scsidisk");
+ bdrv_open(bdrv, "scsi_disk.img", 0);
+ lsi_scsi_attach(scsi, bdrv, -1);
+ bdrv = bdrv_new("scsicd");
+ bdrv_open(bdrv, "scsi_cd.iso", 0);
+ bdrv_set_type_hint(bdrv, BDRV_TYPE_CDROM);
+ lsi_scsi_attach(scsi, bdrv, -1);
}
- kbd_init();
- AUD_init();
- DMA_init();
- SB16_init();
+#endif
+}
- fdctrl_init(6, 2, 0, 0x3f0, fd_table);
+static void pc_init_pci(int ram_size, int vga_ram_size, int boot_device,
+ DisplayState *ds, const char **fd_filename,
+ int snapshot,
+ 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, fd_filename, snapshot,
+ kernel_filename, kernel_cmdline,
+ initrd_filename, 1);
+}
- cmos_init(ram_size, boot_device);
+static void pc_init_isa(int ram_size, int vga_ram_size, int boot_device,
+ DisplayState *ds, const char **fd_filename,
+ int snapshot,
+ 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, fd_filename, snapshot,
+ kernel_filename, kernel_cmdline,
+ initrd_filename, 0);
}
+
+QEMUMachine pc_machine = {
+ "pc",
+ "Standard PC",
+ pc_init_pci,
+};
+
+QEMUMachine isapc_machine = {
+ "isapc",
+ "ISA-only PC",
+ pc_init_isa,
+};
projects / qemu / blobdiff