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authorStefan Reinauer <reinauer@chromium.org>2012-01-23 14:17:52 -0800
committerMarc Jones <marcj303@gmail.com>2012-02-07 00:09:58 +0100
commitc0a6c6b3b946f13f331ad2c2a3ab941cde628098 (patch)
treef2fa411b4f381c7b77cb4e1570b34013c64588db
parent01f7ab93359ae0fee5784d35effbcbe0b596df18 (diff)
downloadcoreboot-c0a6c6b3b946f13f331ad2c2a3ab941cde628098.tar.xz
Add OPROM mapping support to coreboot
This allows to add a PCI ID mapping function for option roms so that the same option rom can be used for a series of devices / PCI IDs. Intel and AMD often use the same option rom for a number of PCI devices with differend IDs. A function to implement such a mapping could look like this (or anything else appropriate): /* some vga option roms are used for several chipsets but they only have one * PCI ID in their header. If we encounter such an option rom, we need to do * the mapping ourselfes */ u32 map_oprom_vendev(u32 vendev) { u32 new_vendev=vendev; switch(vendev) { case 0xa0118086: new_vendev=0xa0018086; break; } return new_vendev; } Change-Id: I1be7fe113b895075d43ea48fe706b039cef136d2 Reviewed-on: http://review.coreboot.org/573 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Marc Jones <marcj303@gmail.com>
-rw-r--r--src/devices/pci_rom.c19
-rw-r--r--src/include/device/pci_rom.h1
2 files changed, 18 insertions, 2 deletions
diff --git a/src/devices/pci_rom.c b/src/devices/pci_rom.c
index 56712df5c5..471c7e2a7a 100644
--- a/src/devices/pci_rom.c
+++ b/src/devices/pci_rom.c
@@ -37,6 +37,19 @@ struct rom_header *pci_rom_probe(struct device *dev)
/* If it's in FLASH, then don't check device for ROM. */
rom_header = cbfs_load_optionrom(dev->vendor, dev->device, NULL);
+ u32 vendev = dev->vendor | (dev->device << 16);
+ u32 mapped_vendev = vendev;
+
+ if (map_oprom_vendev)
+ mapped_vendev = map_oprom_vendev(vendev);
+
+ if (!rom_header) {
+ if (vendev != mapped_vendev) {
+ rom_header = cbfs_load_optionrom(mapped_vendev &
+ 0xffff, mapped_vendev >> 16, NULL);
+ }
+ }
+
if (rom_header) {
printk(BIOS_DEBUG, "In CBFS, ROM address for %s = %p\n",
dev_path(dev), rom_header);
@@ -78,8 +91,10 @@ struct rom_header *pci_rom_probe(struct device *dev)
printk(BIOS_SPEW, "PCI ROM image, vendor ID %04x, device ID %04x,\n",
rom_data->vendor, rom_data->device);
- if (dev->vendor != rom_data->vendor
- || dev->device != rom_data->device) {
+ /* If the device id is mapped, a mismatch is expected */
+ if ((dev->vendor != rom_data->vendor
+ || dev->device != rom_data->device)
+ && (vendev == mapped_vendev)) {
printk(BIOS_ERR, "ID mismatch: vendor ID %04x, "
"device ID %04x\n", rom_data->vendor, rom_data->device);
return NULL;
diff --git a/src/include/device/pci_rom.h b/src/include/device/pci_rom.h
index f2683410fd..fe77276491 100644
--- a/src/include/device/pci_rom.h
+++ b/src/include/device/pci_rom.h
@@ -35,5 +35,6 @@ struct pci_data {
struct rom_header *pci_rom_probe(struct device *dev);
struct rom_header *pci_rom_load(struct device *dev, struct rom_header *rom_header);
+u32 __attribute__((weak)) map_oprom_vendev(u32 vendev);
#endif