[coreboot] New patch to review for coreboot: e0cb055 Add possibility to patch VGA oprom

[Christian Gmeiner (christian.gmeiner@gmail.com)]

Christian Gmeiner (christian.gmeiner at gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1478

-gerrit

commit e0cb05598872e866d6b8afee2eed3db9a0bff624
Author: Christian Gmeiner <christian.gmeiner at gmail.com>
Date:   Wed Aug 22 16:10:46 2012 +0200

    Add possibility to patch VGA oprom
    
    In some rare cases it could be usefull to patch a VGA oprom in order
    to fix some stuff. In later patches this will be used to add EDID
    information to SeaVIDEOBIOS in oder to support some flat panels.
    
    Change-Id: Ic1005053265505a65b6fd99bc3c6c9cfcbffee43
    Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
---
 src/devices/pci_rom.c        | 7 +++++++
 src/include/device/pci_rom.h | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/src/devices/pci_rom.c b/src/devices/pci_rom.c
index fe67515..b001ee3 100644
--- a/src/devices/pci_rom.c
+++ b/src/devices/pci_rom.c
@@ -162,6 +162,13 @@ struct rom_header *pci_rom_load(struct device *dev,
 			memcpy((void *)PCI_VGA_RAM_IMAGE_START, rom_header,
 			       rom_size);
 		}
+
+		/* In some cases it is usefull to patch an pci vga oprom. A good example
+		 * is adding/changing some EDID information stored in the VGA option rom.
+		 */
+		if (pci_vga_rom_patch)
+			pci_vga_rom_patch(rom_data, (void *)PCI_VGA_RAM_IMAGE_START);
+
 		return (struct rom_header *) (PCI_VGA_RAM_IMAGE_START);
 	}
 
diff --git a/src/include/device/pci_rom.h b/src/include/device/pci_rom.h
index fe77276..690e304 100644
--- a/src/include/device/pci_rom.h
+++ b/src/include/device/pci_rom.h
@@ -37,4 +37,7 @@ 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);
 
+void __attribute__((weak))
+pci_vga_rom_patch(struct pci_data *rom_data, void *pci_vga_ram_image_start);
+
 #endif