Revision 34b39c2b hw/pc.c
| b/hw/pc.c | ||
|---|---|---|
| 763 | 763 |
{
|
| 764 | 764 |
char buf[1024]; |
| 765 | 765 |
int ret, linux_boot, i; |
| 766 |
ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset; |
|
| 766 |
ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset, option_rom_start = 0;
|
|
| 767 | 767 |
ram_addr_t below_4g_mem_size, above_4g_mem_size = 0; |
| 768 | 768 |
int bios_size, isa_bios_size, vga_bios_size; |
| 769 | 769 |
PCIBus *pci_bus; |
| ... | ... | |
| 774 | 774 |
int index; |
| 775 | 775 |
BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; |
| 776 | 776 |
BlockDriverState *fd[MAX_FD]; |
| 777 |
int using_vga = cirrus_vga_enabled || std_vga_enabled || vmsvga_enabled; |
|
| 777 | 778 |
|
| 778 | 779 |
if (ram_size >= 0xe0000000 ) {
|
| 779 | 780 |
above_4g_mem_size = ram_size - 0xe0000000; |
| ... | ... | |
| 856 | 857 |
exit(1); |
| 857 | 858 |
} |
| 858 | 859 |
|
| 859 |
if (cirrus_vga_enabled || std_vga_enabled || vmsvga_enabled) {
|
|
| 860 |
if (using_vga) {
|
|
| 860 | 861 |
/* VGA BIOS load */ |
| 861 | 862 |
if (cirrus_vga_enabled) {
|
| 862 | 863 |
snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME); |
| ... | ... | |
| 874 | 875 |
fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf); |
| 875 | 876 |
exit(1); |
| 876 | 877 |
} |
| 878 |
/* Round up vga bios size to the next 2k boundary */ |
|
| 879 |
vga_bios_size = (vga_bios_size + 2047) & ~2047; |
|
| 880 |
option_rom_start = 0xc0000 + vga_bios_size; |
|
| 877 | 881 |
|
| 878 | 882 |
/* setup basic memory access */ |
| 879 |
cpu_register_physical_memory(0xc0000, 0x10000,
|
|
| 883 |
cpu_register_physical_memory(0xc0000, vga_bios_size,
|
|
| 880 | 884 |
vga_bios_offset | IO_MEM_ROM); |
| 881 | 885 |
} |
| 882 | 886 |
|
| 887 |
/* No point in placing option roms before this address, since bochs bios |
|
| 888 |
* will only start looking for it at 0xc8000 */ |
|
| 889 |
if (option_rom_start < 0xc8000) |
|
| 890 |
option_rom_start = 0xc8000; |
|
| 891 |
|
|
| 892 |
|
|
| 883 | 893 |
/* map the last 128KB of the BIOS in ISA space */ |
| 884 | 894 |
isa_bios_size = bios_size; |
| 885 | 895 |
if (isa_bios_size > (128 * 1024)) |
| ... | ... | |
| 892 | 902 |
ram_addr_t option_rom_offset; |
| 893 | 903 |
int size, offset; |
| 894 | 904 |
|
| 895 |
offset = 0;
|
|
| 905 |
offset = option_rom_start;
|
|
| 896 | 906 |
if (linux_boot) {
|
| 897 | 907 |
option_rom_offset = qemu_ram_alloc(TARGET_PAGE_SIZE); |
| 898 | 908 |
load_linux(phys_ram_base + option_rom_offset, |
| 899 | 909 |
kernel_filename, initrd_filename, kernel_cmdline); |
| 900 |
cpu_register_physical_memory(0xd0000, TARGET_PAGE_SIZE,
|
|
| 910 |
cpu_register_physical_memory(option_rom_start, TARGET_PAGE_SIZE,
|
|
| 901 | 911 |
option_rom_offset | IO_MEM_ROM); |
| 902 |
offset = TARGET_PAGE_SIZE; |
|
| 912 |
offset += TARGET_PAGE_SIZE;
|
|
| 903 | 913 |
} |
| 904 | 914 |
|
| 905 | 915 |
for (i = 0; i < nb_option_roms; i++) {
|
| ... | ... | |
| 909 | 919 |
option_rom[i]); |
| 910 | 920 |
exit(1); |
| 911 | 921 |
} |
| 912 |
if (size > (0x10000 - offset))
|
|
| 922 |
if (size > (0xe0000 - offset))
|
|
| 913 | 923 |
goto option_rom_error; |
| 914 | 924 |
option_rom_offset = qemu_ram_alloc(size); |
| 915 | 925 |
ret = load_image(option_rom[i], phys_ram_base + option_rom_offset); |
| 916 | 926 |
if (ret != size) {
|
| 917 | 927 |
option_rom_error: |
| 918 |
fprintf(stderr, "Too many option ROMS\n");
|
|
| 928 |
fprintf(stderr, "Could not fit %soption roms in available space\n", using_vga ? "VGA bios and " : "");
|
|
| 919 | 929 |
exit(1); |
| 920 | 930 |
} |
| 921 | 931 |
size = (size + 4095) & ~4095; |
| 922 |
cpu_register_physical_memory(0xd0000 + offset, |
|
| 923 |
size, option_rom_offset | IO_MEM_ROM); |
|
| 932 |
cpu_register_physical_memory(offset, size, option_rom_offset | IO_MEM_ROM); |
|
| 924 | 933 |
offset += size; |
| 925 | 934 |
} |
| 926 | 935 |
} |
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