| /* |
| * 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 |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| #include "hw.h" |
| #include "pc.h" |
| #include "fdc.h" |
| #include "pci.h" |
| #include "block.h" |
| #include "sysemu.h" |
| #include "audio/audio.h" |
| #include "net.h" |
| #include "smbus.h" |
| #include "boards.h" |
| #include "console.h" |
| #include "fw_cfg.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 PC_MAX_BIOS_SIZE (4 * 1024 * 1024) |
| |
| /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */ |
| #define ACPI_DATA_SIZE 0x10000 |
| #define BIOS_CFG_IOPORT 0x510 |
| |
| #define MAX_IDE_BUS 2 |
| |
| 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 */ |
| #ifdef 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 */ |
| if (!apic_accept_pic_intr(env)) |
| return -1; |
| |
| intno = pic_read_irq(isa_pic); |
| return intno; |
| } |
| |
| static void pic_irq_request(void *opaque, int irq, int level) |
| { |
| CPUState *env = first_cpu; |
| |
| if (env->apic_state) { |
| while (env) { |
| if (apic_accept_pic_intr(env)) |
| apic_deliver_pic_intr(env, level); |
| env = env->next_cpu; |
| } |
| } else { |
| 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 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); |
| } |
| |
| /* convert boot_device letter to something recognizable by the bios */ |
| static int boot_device2nibble(char boot_device) |
| { |
| switch(boot_device) { |
| case 'a': |
| case 'b': |
| return 0x01; /* floppy boot */ |
| case 'c': |
| return 0x02; /* hard drive boot */ |
| case 'd': |
| return 0x03; /* CD-ROM boot */ |
| case 'n': |
| return 0x04; /* Network boot */ |
| } |
| return 0; |
| } |
| |
| /* copy/pasted from cmos_init, should be made a general function |
| and used there as well */ |
| static int pc_boot_set(void *opaque, const char *boot_device) |
| { |
| #define PC_MAX_BOOT_DEVICES 3 |
| RTCState *s = (RTCState *)opaque; |
| int nbds, bds[3] = { 0, }; |
| int i; |
| |
| nbds = strlen(boot_device); |
| if (nbds > PC_MAX_BOOT_DEVICES) { |
| term_printf("Too many boot devices for PC\n"); |
| return(1); |
| } |
| for (i = 0; i < nbds; i++) { |
| bds[i] = boot_device2nibble(boot_device[i]); |
| if (bds[i] == 0) { |
| term_printf("Invalid boot device for PC: '%c'\n", |
| boot_device[i]); |
| return(1); |
| } |
| } |
| rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]); |
| rtc_set_memory(s, 0x38, (bds[2] << 4)); |
| return(0); |
| } |
| |
| /* hd_table must contain 4 block drivers */ |
| static void cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size, |
| const char *boot_device, BlockDriverState **hd_table) |
| { |
| RTCState *s = rtc_state; |
| int nbds, bds[3] = { 0, }; |
| int val; |
| int fd0, fd1, nb; |
| int i; |
| |
| /* 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 (above_4g_mem_size) { |
| rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16); |
| rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24); |
| rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32); |
| } |
| |
| 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); |
| |
| /* set the number of CPU */ |
| rtc_set_memory(s, 0x5f, smp_cpus - 1); |
| |
| /* set boot devices, and disable floppy signature check if requested */ |
| #define PC_MAX_BOOT_DEVICES 3 |
| nbds = strlen(boot_device); |
| if (nbds > PC_MAX_BOOT_DEVICES) { |
| fprintf(stderr, "Too many boot devices for PC\n"); |
| exit(1); |
| } |
| for (i = 0; i < nbds; i++) { |
| bds[i] = boot_device2nibble(boot_device[i]); |
| if (bds[i] == 0) { |
| fprintf(stderr, "Invalid boot device for PC: '%c'\n", |
| boot_device[i]); |
| exit(1); |
| } |
| } |
| rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]); |
| rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1)); |
| |
| /* 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) |
| nb++; |
| switch (nb) { |
| case 0: |
| break; |
| case 1: |
| val |= 0x01; /* 1 drive, ready for boot */ |
| break; |
| case 2: |
| 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); |
| } |
| |
| void ioport_set_a20(int enable) |
| { |
| /* XXX: send to all CPUs ? */ |
| cpu_x86_set_a20(first_cpu, enable); |
| } |
| |
| int ioport_get_a20(void) |
| { |
| 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; |
| } |
| |
| /***********************************************************/ |
| /* Bochs BIOS debug ports */ |
| |
| static 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: |
| case 0x401: |
| fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val); |
| exit(1); |
| case 0x402: |
| case 0x403: |
| #ifdef DEBUG_BIOS |
| 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: |
| case 0x502: |
| fprintf(stderr, "VGA BIOS panic, line %d\n", val); |
| exit(1); |
| case 0x500: |
| case 0x503: |
| #ifdef DEBUG_BIOS |
| fprintf(stderr, "%c", val); |
| #endif |
| break; |
| } |
| } |
| |
| static void bochs_bios_init(void) |
| { |
| void *fw_cfg; |
| |
| 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); |
| |
| fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0); |
| fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1); |
| fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); |
| } |
| |
| /* Generate an initial boot sector which sets state and jump to |
| a specified vector */ |
| static void generate_bootsect(uint8_t *option_rom, |
| uint32_t gpr[8], uint16_t segs[6], uint16_t ip) |
| { |
| uint8_t rom[512], *p, *reloc; |
| uint8_t sum; |
| int i; |
| |
| memset(rom, 0, sizeof(rom)); |
| |
| p = rom; |
| /* Make sure we have an option rom signature */ |
| *p++ = 0x55; |
| *p++ = 0xaa; |
| |
| /* ROM size in sectors*/ |
| *p++ = 1; |
| |
| /* Hook int19 */ |
| |
| *p++ = 0x50; /* push ax */ |
| *p++ = 0x1e; /* push ds */ |
| *p++ = 0x31; *p++ = 0xc0; /* xor ax, ax */ |
| *p++ = 0x8e; *p++ = 0xd8; /* mov ax, ds */ |
| |
| *p++ = 0xc7; *p++ = 0x06; /* movvw _start,0x64 */ |
| *p++ = 0x64; *p++ = 0x00; |
| reloc = p; |
| *p++ = 0x00; *p++ = 0x00; |
| |
| *p++ = 0x8c; *p++ = 0x0e; /* mov cs,0x66 */ |
| *p++ = 0x66; *p++ = 0x00; |
| |
| *p++ = 0x1f; /* pop ds */ |
| *p++ = 0x58; /* pop ax */ |
| *p++ = 0xcb; /* lret */ |
| |
| /* Actual code */ |
| *reloc = (p - rom); |
| |
| *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; |
| |
| /* sign rom */ |
| sum = 0; |
| for (i = 0; i < (sizeof(rom) - 1); i++) |
| sum += rom[i]; |
| rom[sizeof(rom) - 1] = -sum; |
| |
| memcpy(option_rom, rom, sizeof(rom)); |
| } |
| |
| 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(uint8_t *option_rom, |
| 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]; |
| 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 = 0x" TARGET_FMT_plx "\n" |
| "qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n" |
| "qemu: prot_addr = 0x" TARGET_FMT_plx "\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 0x" TARGET_FMT_plx |
| "\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(option_rom, 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; |
| } |
| qemu_register_reset(main_cpu_reset, env); |
| if (pci_enabled) { |
| apic_init(env); |
| } |
| } |
| |
| vmport_init(); |
| |
| /* allocate RAM */ |
| ram_addr = qemu_ram_alloc(0xa0000); |
| cpu_register_physical_memory(0, 0xa0000, ram_addr); |
| |
| /* Allocate, even though we won't register, so we don't break the |
| * phys_ram_base + PA assumption. This range includes vga (0xa0000 - 0xc0000), |
| * and some bios areas, which will be registered later |
| */ |
| ram_addr = qemu_ram_alloc(0x100000 - 0xa0000); |
| ram_addr = qemu_ram_alloc(below_4g_mem_size - 0x100000); |
| cpu_register_physical_memory(0x100000, |
| below_4g_mem_size - 0x100000, |
| ram_addr); |
| |
| /* above 4giga memory allocation */ |
| if (above_4g_mem_size > 0) { |
| ram_addr = qemu_ram_alloc(above_4g_mem_size); |
| cpu_register_physical_memory(0x100000000ULL, |
| above_4g_mem_size, |
| ram_addr); |
| } |
| |
| |
| /* 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(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; |
| if (linux_boot) { |
| option_rom_offset = qemu_ram_alloc(TARGET_PAGE_SIZE); |
| load_linux(phys_ram_base + option_rom_offset, |
| kernel_filename, initrd_filename, kernel_cmdline); |
| cpu_register_physical_memory(0xd0000, TARGET_PAGE_SIZE, |
| option_rom_offset | IO_MEM_ROM); |
| offset = TARGET_PAGE_SIZE; |
| } |
| |
| 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(); |
| |
| 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 = { |
| .name = "pc", |
| .desc = "Standard PC", |
| .init = pc_init_pci, |
| .ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE, |
| .max_cpus = 255, |
| }; |
| |
| QEMUMachine isapc_machine = { |
| .name = "isapc", |
| .desc = "ISA-only PC", |
| .init = pc_init_isa, |
| .ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE, |
| .max_cpus = 1, |
| }; |
