diff options
| author | Stefan Reinauer <reinauer@chromium.org> | 2012-01-23 14:17:52 -0800 |
|---|---|---|
| committer | Marc Jones <marcj303@gmail.com> | 2012-02-07 00:09:58 +0100 |
| commit | c0a6c6b3b946f13f331ad2c2a3ab941cde628098 (patch) | |
| tree | f2fa411b4f381c7b77cb4e1570b34013c64588db | |
| parent | 01f7ab93359ae0fee5784d35effbcbe0b596df18 (diff) | |
| download | coreboot-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.c | 19 | ||||
| -rw-r--r-- | src/include/device/pci_rom.h | 1 |
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 |