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>
7 struct rom_header * pci_rom_probe(struct device *dev)
9 unsigned long rom_address;
10 struct rom_header *rom_header;
11 struct pci_data *rom_data;
13 if (dev->on_mainboard) {
14 // in case some device PCI_ROM_ADDRESS can not be set or readonly
15 rom_address = dev->rom_address;
17 rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS);
20 if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
24 printk_debug("rom address for %s = %x\n", dev_path(dev), rom_address);
26 if(!dev->on_mainboard) {
27 /* enable expansion ROM address decoding */
28 pci_write_config32(dev, PCI_ROM_ADDRESS,
29 rom_address|PCI_ROM_ADDRESS_ENABLE);
32 rom_header = (struct rom_header *)rom_address;
33 printk_spew("PCI Expansion ROM, signature 0x%04x, INIT size 0x%04x, data ptr 0x%04x\n",
34 le32_to_cpu(rom_header->signature),
35 rom_header->size * 512, le32_to_cpu(rom_header->data));
36 if (le32_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
37 printk_err("Incorrect Expansion ROM Header Signature %04x\n",
38 le32_to_cpu(rom_header->signature));
42 rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data);
43 printk_spew("PCI ROM Image, Vendor %04x, Device %04x,\n",
44 rom_data->vendor, rom_data->device);
45 if (dev->vendor != rom_data->vendor || dev->device != rom_data->device) {
46 printk_err("Device or Vendor ID mismatch Vendor %04x, Device %04x\n",
47 rom_data->vendor, rom_data->device);
51 printk_spew("PCI ROM Image, Class Code %04x%02x, Code Type %02x\n",
52 rom_data->class_hi, rom_data->class_lo,
54 if (dev->class != ((rom_data->class_hi << 8) | rom_data->class_lo)) {
55 printk_debug("Class Code mismatch ROM %08x, dev %08x\n",
56 (rom_data->class_hi << 8) | rom_data->class_lo, dev->class);
63 static void *pci_ram_image_start = (void *)PCI_RAM_IMAGE_START;
65 #if CONFIG_CONSOLE_VGA == 1
66 extern int vga_inited; // defined in vga_console.c
67 #if CONFIG_CONSOLE_VGA_MULTI == 0
68 extern device_t vga_pri; // the primary vga device, defined in device.c
72 struct rom_header *pci_rom_load(struct device *dev, struct rom_header *rom_header)
74 struct pci_data * rom_data;
75 unsigned long rom_address;
76 unsigned int rom_size;
77 unsigned int image_size=0;
79 rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS);
82 rom_header = (unsigned char *) rom_header + image_size; // get next image
83 rom_data = (unsigned char *) rom_header + le32_to_cpu(rom_header->data);
84 image_size = le32_to_cpu(rom_data->ilen) * 512;
85 } while ((rom_data->type!=0) && (rom_data->indicator!=0)); // make sure we got x86 version
87 if(rom_data->type!=0) return NULL;
89 rom_size = rom_header->size * 512;
91 if (PCI_CLASS_DISPLAY_VGA == rom_data->class_hi) {
92 #if CONFIG_CONSOLE_VGA == 1
93 #if CONFIG_CONSOLE_VGA_MULTI == 0
94 if (dev != vga_pri) return NULL; // only one VGA supported
96 printk_debug("copying VGA ROM Image from %x to %x, %x bytes\n",
97 rom_header, PCI_VGA_RAM_IMAGE_START, rom_size);
98 memcpy(PCI_VGA_RAM_IMAGE_START, rom_header, rom_size);
100 return (struct rom_header *) (PCI_VGA_RAM_IMAGE_START);
103 printk_debug("copying non-VGA ROM Image from %x to %x, %x bytes\n",
104 rom_header, pci_ram_image_start, rom_size);
105 memcpy(pci_ram_image_start, rom_header, rom_size);
106 pci_ram_image_start += rom_size;
107 return (struct rom_header *) (pci_ram_image_start-rom_size);
109 /* disable expansion ROM address decoding */
110 pci_write_config32(dev, PCI_ROM_ADDRESS, rom_address & ~PCI_ROM_ADDRESS_ENABLE);