src/device: Add option to look at revision in option roms
AMD's Family 17h SOCs have the same vendor and device IDs for
their graphics blocks, but need different video BIOSes. The
only difference is the revision number.
Add a Kconfig option that allows us to add the revision number
of the graphics device to the PCI option rom saved in CBFS.
Because searching CBFS takes a non-trivial amount of time,
only enable the option if it's needed. If it's not used, or
if nothing matches, the check will fall through and search for
an option rom with no version.
BUG=b:145817712
TEST=With surrounding patches, loads dali vbios
Change-Id: Icb610a2abe7fcd0f4dc3716382b9853551240a7a
Signed-off-by: Martin Roth <martinroth@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/2013181
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39792
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
diff --git a/src/device/pci_rom.c b/src/device/pci_rom.c
index 27f2d8d..6af20e8 100644
--- a/src/device/pci_rom.c
+++ b/src/device/pci_rom.c
@@ -27,11 +27,17 @@
struct rom_header *pci_rom_probe(struct device *dev)
{
- struct rom_header *rom_header;
+ struct rom_header *rom_header = NULL;
struct pci_data *rom_data;
/* If it's in FLASH, then don't check device for ROM. */
- rom_header = cbfs_boot_map_optionrom(dev->vendor, dev->device);
+ if (CONFIG(CHECK_REV_IN_OPROM_NAME)) {
+ uint8_t rev = pci_read_config8(dev, PCI_REVISION_ID);
+ rom_header = cbfs_boot_map_optionrom_revision(dev->vendor, dev->device, rev);
+ }
+
+ if (!rom_header)
+ rom_header = cbfs_boot_map_optionrom(dev->vendor, dev->device);
u32 vendev = (dev->vendor << 16) | dev->device;
u32 mapped_vendev;