Li-Ta Lo | 883b879 | 2005-01-10 23:16:22 +0000 | [diff] [blame] | 1 | #include <console/console.h> |
| 2 | #include <device/device.h> |
| 3 | #include <device/pci.h> |
| 4 | #include <device/pci_ids.h> |
| 5 | #include <device/pci_ops.h> |
| 6 | |
| 7 | struct rom_header * pci_rom_probe(struct device *dev) |
| 8 | { |
| 9 | unsigned long rom_address; |
| 10 | struct rom_header *rom_header; |
| 11 | struct pci_data *rom_data; |
| 12 | |
| 13 | rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS); |
| 14 | if (rom_address == 0x00000000 || rom_address == 0xffffffff) { |
| 15 | /* FixME: search in the LinuxBIOS Image for integrated |
| 16 | * devices? */ |
| 17 | return NULL; |
| 18 | } |
| 19 | |
Li-Ta Lo | 515f6c7 | 2005-01-11 22:48:54 +0000 | [diff] [blame^] | 20 | printk_spew("%s, rom address for %s = %x\n", |
| 21 | __func__, dev_path(dev), rom_address); |
Li-Ta Lo | 883b879 | 2005-01-10 23:16:22 +0000 | [diff] [blame] | 22 | |
| 23 | /* enable expansion ROM address decoding */ |
| 24 | pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address|PCI_ROM_ADDRESS_ENABLE); |
| 25 | |
| 26 | rom_header = rom_address; |
Li-Ta Lo | 515f6c7 | 2005-01-11 22:48:54 +0000 | [diff] [blame^] | 27 | printk_spew("%s, PCI Expansion ROM, signature 0x%04x, \n\t" |
| 28 | "INIT size 0x%04x, data ptr 0x%04x\n", |
| 29 | __func__, le32_to_cpu(rom_header->signature), |
| 30 | rom_header->size * 512, le32_to_cpu(rom_header->data)); |
Li-Ta Lo | 883b879 | 2005-01-10 23:16:22 +0000 | [diff] [blame] | 31 | if (le32_to_cpu(rom_header->signature) != PCI_ROM_HDR) { |
| 32 | printk_err("%s, Incorrect Expansion ROM Header Signature %04x\n", |
| 33 | __func__, le32_to_cpu(rom_header->signature)); |
| 34 | return NULL; |
| 35 | } |
| 36 | |
| 37 | rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data); |
Li-Ta Lo | 515f6c7 | 2005-01-11 22:48:54 +0000 | [diff] [blame^] | 38 | printk_spew("%s, PCI ROM Image, Vendor %04x, Device %04x,\n", |
| 39 | __func__, rom_data->vendor, rom_data->device); |
Li-Ta Lo | 883b879 | 2005-01-10 23:16:22 +0000 | [diff] [blame] | 40 | if (dev->vendor != rom_data->vendor || dev->device != rom_data->device) { |
| 41 | printk_err("%s, Device or Vendor ID mismatch\n"); |
| 42 | return NULL; |
| 43 | } |
| 44 | |
Li-Ta Lo | 515f6c7 | 2005-01-11 22:48:54 +0000 | [diff] [blame^] | 45 | printk_spew("%s, PCI ROM Image, Class Code %02x%04x, Code Type %02x\n", |
| 46 | __func__, rom_data->class_hi, rom_data->class_lo, |
| 47 | rom_data->type); |
Li-Ta Lo | 883b879 | 2005-01-10 23:16:22 +0000 | [diff] [blame] | 48 | if ((dev->class >> 8) != (rom_data->class_hi << 16 | rom_data->class_lo)) { |
| 49 | printk_err("%s, Class Code mismatch %x\n", |
| 50 | __func__, dev->class); |
| 51 | return NULL; |
| 52 | } |
| 53 | |
| 54 | return rom_header; |
| 55 | } |
| 56 | |
| 57 | static void *pci_ram_image_start = PCI_RAM_IMAGE_START; |
| 58 | struct rom_header *pci_rom_load(struct device *dev, struct rom_header *rom_header) |
| 59 | { |
| 60 | struct pci_data * rom_data; |
| 61 | unsigned long rom_address; |
| 62 | unsigned int rom_size; |
| 63 | |
| 64 | rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS); |
| 65 | rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data); |
| 66 | rom_size = rom_header->size*512; |
| 67 | |
| 68 | if (PCI_CLASS_DISPLAY_VGA == (rom_data->class_hi << 16 | rom_data->class_lo)) { |
Li-Ta Lo | 515f6c7 | 2005-01-11 22:48:54 +0000 | [diff] [blame^] | 69 | printk_spew("%s, copying VGA ROM Image from %x to %x, %x bytes\n", |
| 70 | __func__, rom_header, PCI_VGA_RAM_IMAGE_START, rom_size); |
Li-Ta Lo | 883b879 | 2005-01-10 23:16:22 +0000 | [diff] [blame] | 71 | memcpy(PCI_VGA_RAM_IMAGE_START, rom_header, rom_size); |
| 72 | return (struct rom_header *) (PCI_VGA_RAM_IMAGE_START); |
| 73 | } else { |
Li-Ta Lo | 515f6c7 | 2005-01-11 22:48:54 +0000 | [diff] [blame^] | 74 | printk_spew("%s, copying non-VGA ROM Image from %x to %x, %x bytes\n", |
| 75 | __func__, rom_header, pci_ram_image_start, rom_size); |
Li-Ta Lo | 883b879 | 2005-01-10 23:16:22 +0000 | [diff] [blame] | 76 | memcpy(pci_ram_image_start, rom_header, rom_size); |
| 77 | pci_ram_image_start += rom_size; |
| 78 | return (struct rom_header *) pci_ram_image_start; |
| 79 | } |
| 80 | /* disable expansion ROM address decoding */ |
| 81 | pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address & ~PCI_ROM_ADDRESS_ENABLE); |
| 82 | } |