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class code reverse 

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1882 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Yinghai Lu 2005-01-18 03:10:46 +00:00
parent 328852d243
commit 54ab3115e3
2 changed files with 23 additions and 19 deletions
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38
src/devices/pci_rom.c
View File

@ -13,41 +13,45 @@ struct rom_header * pci_rom_probe(struct device *dev)
rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS);
if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
return NULL;
if(dev->on_mainboard && (dev->rom_address!=0) ) { // in case some device PCI_ROM_ADDRESS can not be set
rom_address = dev->rom_address;
}
else
return NULL;
}
printk_debug("%s, rom address for %s = %x\n",
__func__, dev_path(dev), rom_address);
printk_debug("rom address for %s = %x\n",
dev_path(dev), rom_address);
/* enable expansion ROM address decoding */
pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address|PCI_ROM_ADDRESS_ENABLE);
rom_header = rom_address;
printk_spew("%s, PCI Expansion ROM, signature 0x%04x, \n\t"
printk_spew("PCI Expansion ROM, signature 0x%04x, \n\t"
"INIT size 0x%04x, data ptr 0x%04x\n",
__func__, le32_to_cpu(rom_header->signature),
le32_to_cpu(rom_header->signature),
rom_header->size * 512, le32_to_cpu(rom_header->data));
if (le32_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
printk_err("%s, Incorrect Expansion ROM Header Signature %04x\n",
__func__, le32_to_cpu(rom_header->signature));
printk_err("Incorrect Expansion ROM Header Signature %04x\n",
le32_to_cpu(rom_header->signature));
return NULL;
}
rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data);
printk_spew("%s, PCI ROM Image, Vendor %04x, Device %04x,\n",
__func__, rom_data->vendor, rom_data->device);
printk_spew("PCI ROM Image, Vendor %04x, Device %04x,\n",
rom_data->vendor, rom_data->device);
if (dev->vendor != rom_data->vendor || dev->device != rom_data->device) {
printk_err("%s, Device or Vendor ID mismatch\n");
printk_err("Device or Vendor ID mismatch Vendor %04x, Device %04x\n", rom_data->vendor, rom_data->device);
return NULL;
}
printk_spew("%s, PCI ROM Image, Class Code %02x%04x, Code Type %02x\n",
__func__, rom_data->class_hi, rom_data->class_lo,
printk_spew("PCI ROM Image, Class Code %04x%02x, Code Type %02x\n",
rom_data->class_hi, rom_data->class_lo,
rom_data->type);
if ((dev->class >> 8) != (rom_data->class_hi << 16 | rom_data->class_lo)) {
printk_err("%s, Class Code mismatch %x\n",
__func__, dev->class);
return NULL;
if (dev->class != ((rom_data->class_hi << 8) | rom_data->class_lo)) {
printk_err("Class Code mismatch ROM %08x, dev %08x\n",
(rom_data->class_hi << 8) | rom_data->class_lo, dev->class);
// return NULL;
}
return rom_header;
@ -70,7 +74,7 @@ struct rom_header *pci_rom_load(struct device *dev, struct rom_header *rom_heade
rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data);
rom_size = rom_header->size*512;
if (PCI_CLASS_DISPLAY_VGA == (rom_data->class_hi << 16 | rom_data->class_lo)) {
if (PCI_CLASS_DISPLAY_VGA == rom_data->class_hi) {
#if CONFIG_CONSOLE_VGA == 1
if (dev != vga_pri) return NULL; // only one VGA supported
printk_spew("%s, copying VGA ROM Image from %x to %x, %x bytes\n",

4
src/include/device/pci_rom.h
View File

@ -24,8 +24,8 @@ struct pci_data {
uint16_t reserved_1;
uint16_t dlen;
uint8_t drevision;
uint8_t class_hi;
uint16_t class_lo;
uint8_t class_lo;
uint16_t class_hi;
uint16_t ilen;
uint16_t irevision;
uint8_t type;