diff options
Diffstat (limited to 'arch/x86/lib/pci.c')
| -rw-r--r-- | arch/x86/lib/pci.c | 63 |
1 files changed, 33 insertions, 30 deletions
diff --git a/arch/x86/lib/pci.c b/arch/x86/lib/pci.c index 593a7db75..f3018b792 100644 --- a/arch/x86/lib/pci.c +++ b/arch/x86/lib/pci.c @@ -42,11 +42,13 @@ int pci_shadow_rom(pci_dev_t dev, unsigned char *dest) u16 device; u32 class_code; + u32 pci_data; + hose = pci_bus_to_hose(PCI_BUS(dev)); -#if 0 - printf("pci_shadow_rom() asked to shadow device %x to %x\n", + + debug("pci_shadow_rom() asked to shadow device %x to %x\n", dev, (u32)dest); -#endif + pci_read_config_word(dev, PCI_VENDOR_ID, &vendor); pci_read_config_word(dev, PCI_DEVICE_ID, &device); pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_code); @@ -67,7 +69,7 @@ int pci_shadow_rom(pci_dev_t dev, unsigned char *dest) return -1; } - size = (~(addr_reg&PCI_ROM_ADDRESS_MASK))+1; + size = (~(addr_reg&PCI_ROM_ADDRESS_MASK)) + 1; debug("ROM is %d bytes\n", size); @@ -80,27 +82,25 @@ int pci_shadow_rom(pci_dev_t dev, unsigned char *dest) |PCI_ROM_ADDRESS_ENABLE); - for (i=rom_addr;i<rom_addr+size; i+=512) { - - + for (i = rom_addr; i < rom_addr + size; i += 512) { if (readw(i) == 0xaa55) { - u32 pci_data; #ifdef PCI_ROM_SCAN_VERBOSE printf("ROM signature found\n"); #endif - pci_data = readw(0x18+i); + pci_data = readw(0x18 + i); pci_data += i; - if (0==memcmp((void*)pci_data, "PCIR", 4)) { + if (0 == memcmp((void *)pci_data, "PCIR", 4)) { #ifdef PCI_ROM_SCAN_VERBOSE - printf("Fount PCI rom image at offset %d\n", i-rom_addr); + printf("Fount PCI rom image at offset %d\n", + i - rom_addr); printf("Vendor %04x device %04x class %06x\n", - readw(pci_data+4), readw(pci_data+6), - readl(pci_data+0x0d)&0xffffff); + readw(pci_data + 4), readw(pci_data + 6), + readl(pci_data + 0x0d) & 0xffffff); printf("%s\n", - (readw(pci_data+0x15) &0x80)? - "Last image":"More images follow"); - switch (readb(pci_data+0x14)) { + (readw(pci_data + 0x15) & 0x80) ? + "Last image" : "More images follow"); + switch (readb(pci_data + 0x14)) { case 0: printf("X86 code\n"); break; @@ -111,35 +111,38 @@ int pci_shadow_rom(pci_dev_t dev, unsigned char *dest) printf("PARISC code\n"); break; } - printf("Image size %d\n", readw(pci_data+0x10) * 512); + printf("Image size %d\n", + readw(pci_data + 0x10) * 512); #endif - /* FixMe: I think we should compare the class code - * bytes as well but I have no reference on the - * exact order of these bytes in the PCI ROM header */ - if (readw(pci_data+4) == vendor && - readw(pci_data+6) == device && - /* (readl(pci_data+0x0d)&0xffffff) == class_code && */ - readb(pci_data+0x14) == 0 /* x86 code image */ ) { + /* + * FixMe: I think we should compare the class + * code bytes as well but I have no reference + * on the exact order of these bytes in the PCI + * ROM header + */ + if (readw(pci_data + 4) == vendor && + readw(pci_data + 6) == device && + readb(pci_data + 0x14) == 0) { #ifdef PCI_ROM_SCAN_VERBOSE - printf("Suitable ROM image found, copying\n"); + printf("Suitable ROM image found\n"); #endif - memmove(dest, (void*)rom_addr, readw(pci_data+0x10) * 512); + memmove(dest, (void *)rom_addr, + readw(pci_data + 0x10) * 512); res = 0; break; } - if (readw(pci_data+0x15) &0x80) { + + if (readw(pci_data + 0x15) & 0x80) break; - } } } } #ifdef PCI_ROM_SCAN_VERBOSE - if (res) { + if (res) printf("No suitable image found\n"); - } #endif /* disable PAR register and PCI device ROM address devocer */ pci_remove_rom_window(hose, rom_addr); |