diff options
Diffstat (limited to 'hw/pc.c')
| -rw-r--r-- | hw/pc.c | 121 |
1 files changed, 53 insertions, 68 deletions
@@ -754,6 +754,27 @@ static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic) nb_ne2k++; } +static int load_option_rom(const char *oprom, target_phys_addr_t start, + target_phys_addr_t end) +{ + int size; + + size = get_image_size(oprom); + if (size > 0 && start + size > end) { + fprintf(stderr, "Not enough space to load option rom '%s'\n", + oprom); + exit(1); + } + size = load_image_targphys(oprom, start, end - start); + if (size < 0) { + fprintf(stderr, "Could not load option rom '%s'\n", oprom); + exit(1); + } + /* Round up optiom rom size to the next 2k boundary */ + size = (size + 2047) & ~2047; + return size; +} + /* PC hardware initialisation */ static void pc_init1(ram_addr_t ram_size, int vga_ram_size, const char *boot_device, @@ -763,9 +784,9 @@ static void pc_init1(ram_addr_t ram_size, int vga_ram_size, { char buf[1024]; int ret, linux_boot, i; - ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset, option_rom_start = 0; + ram_addr_t ram_addr, vga_ram_addr, bios_offset, option_rom_offset; ram_addr_t below_4g_mem_size, above_4g_mem_size = 0; - int bios_size, isa_bios_size, vga_bios_size; + int bios_size, isa_bios_size, oprom_area_size; PCIBus *pci_bus; int piix3_devfn = -1; CPUState *env; @@ -856,40 +877,6 @@ static void pc_init1(ram_addr_t ram_size, int vga_ram_size, fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf); exit(1); } - - if (using_vga) { - /* 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); - } - /* Round up vga bios size to the next 2k boundary */ - vga_bios_size = (vga_bios_size + 2047) & ~2047; - option_rom_start = 0xc0000 + vga_bios_size; - - /* setup basic memory access */ - cpu_register_physical_memory(0xc0000, vga_bios_size, - vga_bios_offset | IO_MEM_ROM); - } - - /* No point in placing option roms before this address, since bochs bios - * will only start looking for it at 0xc8000 */ - if (option_rom_start < 0xc8000) - option_rom_start = 0xc8000; - - /* map the last 128KB of the BIOS in ISA space */ isa_bios_size = bios_size; if (isa_bios_size > (128 * 1024)) @@ -898,40 +885,38 @@ vga_bios_error: isa_bios_size, (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM); - { - ram_addr_t option_rom_offset; - int size, offset; - - offset = option_rom_start; - 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(option_rom_start, 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 > (0xe0000 - 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, "Could not fit %soption roms in available space\n", using_vga ? "VGA bios and " : ""); - exit(1); - } - size = (size + 4095) & ~4095; - cpu_register_physical_memory(offset, size, option_rom_offset | IO_MEM_ROM); - offset += size; + + option_rom_offset = qemu_ram_alloc(0x20000); + oprom_area_size = 0; + cpu_register_physical_memory(0xc0000, 0x20000, + option_rom_offset | IO_MEM_ROM); + + if (using_vga) { + /* 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); } + oprom_area_size = load_option_rom(buf, 0xc0000, 0xe0000); + } + /* Although video roms can grow larger than 0x8000, the area between + * 0xc0000 - 0xc8000 is reserved for them. It means we won't be looking + * for any other kind of option rom inside this area */ + if (oprom_area_size < 0x8000) + oprom_area_size = 0x8000; + + if (linux_boot) { + load_linux(phys_ram_base + option_rom_offset + oprom_area_size, + kernel_filename, initrd_filename, kernel_cmdline); + oprom_area_size += 2048; + } + + for (i = 0; i < nb_option_roms; i++) { + oprom_area_size += load_option_rom(option_rom[i], + 0xc0000 + oprom_area_size, 0xe0000); } /* map all the bios at the top of memory */ |