diff options
Diffstat (limited to 'roms/u-boot/include/pci_rom.h')
-rw-r--r-- | roms/u-boot/include/pci_rom.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/roms/u-boot/include/pci_rom.h b/roms/u-boot/include/pci_rom.h new file mode 100644 index 000000000..895c9627f --- /dev/null +++ b/roms/u-boot/include/pci_rom.h @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * From coreboot file of same name + */ + +#ifndef _PCI_ROM_H +#define _PCI_ROM_H + +#define PCI_ROM_HDR 0xaa55 + +struct pci_rom_header { + uint16_t signature; + uint8_t size; + uint8_t init[3]; + uint8_t reserved[0x12]; + uint16_t data; +}; + +struct pci_rom_data { + uint32_t signature; + uint16_t vendor; + uint16_t device; + uint16_t reserved_1; + uint16_t dlen; + uint8_t drevision; + uint8_t class_lo; + uint16_t class_hi; + uint16_t ilen; + uint16_t irevision; + uint8_t type; + uint8_t indicator; + uint16_t reserved_2; +}; + +/* + * Determines which execution method is used and whether we allow falling back + * to the other if the requested method is not available. + */ +enum pci_rom_emul { + PCI_ROM_EMULATE = 0 << 0, + PCI_ROM_USE_NATIVE = 1 << 0, + PCI_ROM_ALLOW_FALLBACK = 1 << 1, +}; + + /** + * dm_pci_run_vga_bios() - Run the VGA BIOS in an x86 PC + * + * @dev: Video device containing the BIOS + * @int15_handler: Function to call to handle int 0x15 + * @exec_method: flags from enum pci_rom_emul + */ +int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void), + int exec_method); + +/** + * board_map_oprom_vendev() - map several PCI IDs to the one the ROM expects + * + * 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 ourselves. + * + * @vendev: Vendor and device for the video device + * @return standard vendor and device expected by the ROM + */ +uint32_t board_map_oprom_vendev(uint32_t vendev); + +#endif |