* 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 DEBUG_BIOS
+
#define BIOS_FILENAME "bios.bin"
#define VGABIOS_FILENAME "vgabios.bin"
+#define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
#define LINUX_BOOT_FILENAME "linux_boot.bin"
#define KERNEL_LOAD_ADDR 0x00100000
int speaker_data_on;
int dummy_refresh_clock;
+static fdctrl_t *floppy_controller;
+static RTCState *rtc_state;
+static PITState *pit;
-static void ioport80_write(CPUState *env, uint32_t addr, uint32_t data)
+static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
{
}
-#define REG_EQUIPMENT_BYTE 0x14
+/* MSDOS compatibility mode FPU exception support */
+/* XXX: add IGNNE support */
+void cpu_set_ferr(CPUX86State *s)
+{
+ pic_set_irq(13, 1);
+}
-static void cmos_init(int ram_size, int boot_device)
+static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
{
- RTCState *s = &rtc_state;
- int val;
-
- /* various important CMOS locations needed by PC/Bochs bios */
+ pic_set_irq(13, 0);
+}
- s->cmos_data[REG_EQUIPMENT_BYTE] = 0x02; /* FPU is there */
- s->cmos_data[REG_EQUIPMENT_BYTE] |= 0x04; /* PS/2 mouse installed */
+/* TSC handling */
- /* memory size */
- 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;
+uint64_t cpu_get_tsc(CPUX86State *env)
+{
+ return qemu_get_clock(vm_clock);
+}
- val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
- if (val > 65535)
- val = 65535;
- s->cmos_data[0x34] = val;
- s->cmos_data[0x35] = val >> 8;
-
- switch(boot_device) {
- case 'a':
- case 'b':
- s->cmos_data[0x3d] = 0x01; /* floppy boot */
- break;
- default:
- case 'c':
- s->cmos_data[0x3d] = 0x02; /* hard drive boot */
- break;
- case 'd':
- s->cmos_data[0x3d] = 0x03; /* CD-ROM boot */
- break;
+/* IRQ handling */
+int cpu_get_pic_interrupt(CPUState *env)
+{
+ int intno;
+
+#ifdef TARGET_X86_64
+ 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;
}
+#endif
+ /* read the irq from the PIC */
+ intno = pic_read_irq(isa_pic);
+ return intno;
+}
+
+static void pic_irq_request(void *opaque, int level)
+{
+ if (level)
+ cpu_interrupt(cpu_single_env, CPU_INTERRUPT_HARD);
+ else
+ cpu_reset_interrupt(cpu_single_env, CPU_INTERRUPT_HARD);
+}
+
+/* PC cmos mappings */
+
+#define REG_EQUIPMENT_BYTE 0x14
+#define REG_IBM_CENTURY_BYTE 0x32
+#define REG_IBM_PS2_CENTURY_BYTE 0x37
+
+
+static inline int to_bcd(RTCState *s, int a)
+{
+ return ((a / 10) << 4) | (a % 10);
}
-void cmos_register_fd (uint8_t fd0, uint8_t fd1)
+static int cmos_get_fd_drive_type(int fd0)
{
- RTCState *s = &rtc_state;
- int nb = 0;
+ int val;
- s->cmos_data[0x10] = 0;
switch (fd0) {
case 0:
/* 1.44 Mb 3"5 drive */
- s->cmos_data[0x10] |= 0x40;
+ val = 4;
break;
case 1:
/* 2.88 Mb 3"5 drive */
- s->cmos_data[0x10] |= 0x60;
+ val = 5;
break;
case 2:
/* 1.2 Mb 5"5 drive */
- s->cmos_data[0x10] |= 0x20;
+ val = 2;
+ break;
+ default:
+ val = 0;
break;
}
- switch (fd1) {
- case 0:
- /* 1.44 Mb 3"5 drive */
- s->cmos_data[0x10] |= 0x04;
+ 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;
+ int val;
+ int fd0, fd1, nb;
+ time_t ti;
+ struct tm *tm;
+ int i;
+
+ /* set the CMOS date */
+ time(&ti);
+ if (rtc_utc)
+ tm = gmtime(&ti);
+ else
+ tm = localtime(&ti);
+ rtc_set_date(s, tm);
+
+ val = to_bcd(s, (tm->tm_year / 100) + 19);
+ rtc_set_memory(s, REG_IBM_CENTURY_BYTE, val);
+ rtc_set_memory(s, REG_IBM_PS2_CENTURY_BYTE, val);
+
+ /* 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;
+ 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;
+ rtc_set_memory(s, 0x34, val);
+ rtc_set_memory(s, 0x35, val >> 8);
+
+ switch(boot_device) {
+ case 'a':
+ case 'b':
+ rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */
break;
- case 1:
- /* 2.88 Mb 3"5 drive */
- s->cmos_data[0x10] |= 0x06;
+ default:
+ case 'c':
+ rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */
break;
- case 2:
- /* 1.2 Mb 5"5 drive */
- s->cmos_data[0x10] |= 0x02;
+ case 'd':
+ rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */
break;
}
+
+ /* floppy type */
+
+ fd0 = fdctrl_get_drive_type(floppy_controller, 0);
+ fd1 = fdctrl_get_drive_type(floppy_controller, 1);
+
+ 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++;
if (fd1 < 3)
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);
+
+ /* Disable check of 0x55AA signature on the last two bytes of
+ first sector of disk. XXX: make it the default ? */
+ // rtc_set_memory(s, 0x38, 1);
}
-void speaker_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
+static void speaker_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
speaker_data_on = (val >> 1) & 1;
- pit_set_gate(&pit_channels[2], val & 1);
+ pit_set_gate(pit, 2, val & 1);
}
-uint32_t speaker_ioport_read(CPUState *env, uint32_t addr)
+static uint32_t speaker_ioport_read(void *opaque, uint32_t addr)
{
int out;
- out = pit_get_out(&pit_channels[2]);
+ out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
dummy_refresh_clock ^= 1;
- return (speaker_data_on << 1) | pit_channels[2].gate | (out << 5) |
+ return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) |
(dummy_refresh_clock << 4);
}
-/***********************************************************/
-/* PC floppy disk controler emulation glue */
-#define PC_FDC_DMA 0x2
-#define PC_FDC_IRQ 0x6
-#define PC_FDC_BASE 0x3F0
-
-static void fdctrl_register (unsigned char **disknames, int ro,
- char boot_device)
+static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
{
- int i;
+ cpu_x86_set_a20(cpu_single_env, (val >> 1) & 1);
+ /* XXX: bit 0 is fast reset */
+}
- fdctrl_init(PC_FDC_IRQ, PC_FDC_DMA, 0, PC_FDC_BASE, boot_device);
- for (i = 0; i < MAX_FD; i++) {
- if (disknames[i] != NULL)
- fdctrl_disk_change(i, disknames[i], ro);
- }
+static uint32_t ioport92_read(void *opaque, uint32_t addr)
+{
+ return ((cpu_single_env->a20_mask >> 20) & 1) << 1;
}
/***********************************************************/
/* Bochs BIOS debug ports */
-void bochs_bios_write(CPUX86State *env, uint32_t addr, uint32_t val)
+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:
void bochs_bios_init(void)
{
- register_ioport_write(0x400, 1, bochs_bios_write, 2);
- register_ioport_write(0x401, 1, bochs_bios_write, 2);
- register_ioport_write(0x402, 1, bochs_bios_write, 1);
- register_ioport_write(0x403, 1, bochs_bios_write, 1);
-
- register_ioport_write(0x501, 1, bochs_bios_write, 2);
- register_ioport_write(0x502, 1, bochs_bios_write, 2);
- register_ioport_write(0x500, 1, bochs_bios_write, 1);
- register_ioport_write(0x503, 1, bochs_bios_write, 1);
+ register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
+ 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(0x500, 1, 1, bochs_bios_write, NULL);
+ register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
}
int fd, size;
int setup_sects;
- fd = open(filename, O_RDONLY);
+ fd = open(filename, O_RDONLY | O_BINARY);
if (fd < 0)
return -1;
return -1;
}
+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 };
+
/* 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)
{
char buf[1024];
- int ret, linux_boot, initrd_size;
-
+ int ret, linux_boot, initrd_size, i, nb_nics1;
+ unsigned long bios_offset, vga_bios_offset;
+ int bios_size, isa_bios_size;
+ PCIBus *pci_bus;
+
linux_boot = (kernel_filename != NULL);
/* allocate RAM */
cpu_register_physical_memory(0, ram_size, 0);
/* BIOS load */
+ bios_offset = ram_size + vga_ram_size;
+ vga_bios_offset = bios_offset + 256 * 1024;
+
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
- ret = load_image(buf, phys_ram_base + 0x000f0000);
- if (ret != 0x10000) {
+ bios_size = get_image_size(buf);
+ if (bios_size <= 0 ||
+ (bios_size % 65536) != 0 ||
+ bios_size > (256 * 1024)) {
+ goto bios_error;
+ }
+ 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);
+ }
+ ret = load_image(buf, phys_ram_base + vga_bios_offset);
/* 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);
+ /* 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];
+ uint8_t old_bootsect[512];
if (bs_table[0] == NULL) {
fprintf(stderr, "A disk image must be given for 'hda' when booting a Linux kernel\n");
exit(1);
}
+ if (bdrv_read(bs_table[0], 0, old_bootsect, 1) >= 0) {
+ /* copy the MSDOS partition table */
+ memcpy(bootsect + 0x1be, old_bootsect + 0x1be, 0x40);
+ }
+
bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect));
/* now we can load the kernel */
stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x210, 0x01);
}
+ if (pci_enabled) {
+ pci_bus = i440fx_init();
+ piix3_init(pci_bus);
+ } else {
+ pci_bus = NULL;
+ }
+
/* init basic PC hardware */
- register_ioport_write(0x80, 1, ioport80_write, 1);
+ 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 + ram_size, ram_size,
+ vga_ram_size);
+ } else {
+ isa_cirrus_vga_init(ds, phys_ram_base + ram_size, ram_size,
+ vga_ram_size);
+ }
+ } else {
+ vga_initialize(pci_bus, ds, phys_ram_base + ram_size, ram_size,
+ vga_ram_size, 0, 0);
+ }
+
+ rtc_state = rtc_init(0x70, 8);
+ register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
+ register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
+
+ register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
+ register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
- vga_initialize(ds, phys_ram_base + ram_size, ram_size,
- vga_ram_size);
+ if (pci_enabled)
+ apic_init(cpu_single_env);
+ isa_pic = pic_init(pic_irq_request, cpu_single_env);
+ pit = pit_init(0x40, 0);
- rtc_init(0x70, 8);
- cmos_init(ram_size, boot_device);
- register_ioport_read(0x61, 1, speaker_ioport_read, 1);
- register_ioport_write(0x61, 1, speaker_ioport_write, 1);
+ for(i = 0; i < MAX_SERIAL_PORTS; i++) {
+ if (serial_hds[i]) {
+ serial_init(serial_io[i], serial_irq[i], serial_hds[i]);
+ }
+ }
+
+ for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
+ if (parallel_hds[i]) {
+ parallel_init(parallel_io[i], parallel_irq[i], parallel_hds[i]);
+ }
+ }
+
+ if (pci_enabled) {
+ for(i = 0; i < nb_nics; i++) {
+ pci_ne2000_init(pci_bus, &nd_table[i]);
+ }
+ pci_piix3_ide_init(pci_bus, bs_table);
+ } else {
+ nb_nics1 = nb_nics;
+ if (nb_nics1 > NE2000_NB_MAX)
+ nb_nics1 = NE2000_NB_MAX;
+ for(i = 0; i < nb_nics1; i++) {
+ isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
+ }
+
+ for(i = 0; i < 2; i++) {
+ isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
+ bs_table[2 * i], bs_table[2 * i + 1]);
+ }
+ }
- pic_init();
- pit_init();
- serial_init(0x3f8, 4);
- ne2000_init(0x300, 9);
- ide_init();
kbd_init();
- AUD_init();
- DMA_init();
- SB16_init();
+ DMA_init(0);
+
+ if (audio_enabled) {
+ AUD_init();
+#ifdef USE_SB16
+ if (sb16_enabled)
+ SB16_init ();
+#endif
+#ifdef CONFIG_ADLIB
+ if (adlib_enabled)
+ Adlib_init ();
+#endif
+#ifdef USE_GUS
+ if (gus_enabled)
+ GUS_init ();
+#endif
+ }
- fdctrl_register((unsigned char **)fd_filename, snapshot, boot_device);
+ floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table);
+
+ cmos_init(ram_size, boot_device, bs_table);
+
+ /* must be done after all PCI devices are instanciated */
+ /* XXX: should be done in the Bochs BIOS */
+ if (pci_enabled) {
+ pci_bios_init();
+ }
}
+
+QEMUMachine pc_machine = {
+ "pc",
+ "Standard PC",
+ pc_init1,
+};
projects / qemu / blobdiff