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>
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@ -37,6 +37,19 @@ struct rom_header *pci_rom_probe(struct device *dev)
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/* If it's in FLASH, then don't check device for ROM. */
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rom_header = cbfs_load_optionrom(dev->vendor, dev->device, NULL);
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u32 vendev = dev->vendor | (dev->device << 16);
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u32 mapped_vendev = vendev;
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if (map_oprom_vendev)
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mapped_vendev = map_oprom_vendev(vendev);
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if (!rom_header) {
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if (vendev != mapped_vendev) {
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rom_header = cbfs_load_optionrom(mapped_vendev &
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0xffff, mapped_vendev >> 16, NULL);
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}
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}
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if (rom_header) {
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printk(BIOS_DEBUG, "In CBFS, ROM address for %s = %p\n",
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dev_path(dev), rom_header);
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@ -78,8 +91,10 @@ struct rom_header *pci_rom_probe(struct device *dev)
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printk(BIOS_SPEW, "PCI ROM image, vendor ID %04x, device ID %04x,\n",
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rom_data->vendor, rom_data->device);
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if (dev->vendor != rom_data->vendor
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|| dev->device != rom_data->device) {
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/* If the device id is mapped, a mismatch is expected */
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if ((dev->vendor != rom_data->vendor
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|| dev->device != rom_data->device)
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&& (vendev == mapped_vendev)) {
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printk(BIOS_ERR, "ID mismatch: vendor ID %04x, "
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"device ID %04x\n", rom_data->vendor, rom_data->device);
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return NULL;
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@ -35,5 +35,6 @@ struct pci_data {
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struct rom_header *pci_rom_probe(struct device *dev);
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struct rom_header *pci_rom_load(struct device *dev, struct rom_header *rom_header);
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u32 __attribute__((weak)) map_oprom_vendev(u32 vendev);
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#endif
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