1 /* 2 * From coreboot file of same name 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #ifndef _PCI_ROM_H 8 #define _PCI_ROM_H 9 10 #define PCI_ROM_HDR 0xaa55 11 12 struct pci_rom_header { 13 uint16_t signature; 14 uint8_t size; 15 uint8_t init[3]; 16 uint8_t reserved[0x12]; 17 uint16_t data; 18 }; 19 20 struct pci_rom_data { 21 uint32_t signature; 22 uint16_t vendor; 23 uint16_t device; 24 uint16_t reserved_1; 25 uint16_t dlen; 26 uint8_t drevision; 27 uint8_t class_lo; 28 uint16_t class_hi; 29 uint16_t ilen; 30 uint16_t irevision; 31 uint8_t type; 32 uint8_t indicator; 33 uint16_t reserved_2; 34 }; 35 36 /* 37 * Determines which execution method is used and whether we allow falling back 38 * to the other if the requested method is not available. 39 */ 40 enum pci_rom_emul { 41 PCI_ROM_EMULATE = 0 << 0, 42 PCI_ROM_USE_NATIVE = 1 << 0, 43 PCI_ROM_ALLOW_FALLBACK = 1 << 1, 44 }; 45 46 /** 47 * dm_pci_run_vga_bios() - Run the VGA BIOS in an x86 PC 48 * 49 * @dev: Video device containing the BIOS 50 * @int15_handler: Function to call to handle int 0x15 51 * @exec_method: flags from enum pci_rom_emul 52 */ 53 int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void), 54 int exec_method); 55 56 /** 57 * board_map_oprom_vendev() - map several PCI IDs to the one the ROM expects 58 * 59 * Some VGA option roms are used for several chipsets but they only have one 60 * PCI ID in their header. If we encounter such an option rom, we need to do 61 * the mapping ourselves. 62 * 63 * @vendev: Vendor and device for the video device 64 * @return standard vendor and device expected by the ROM 65 */ 66 uint32_t board_map_oprom_vendev(uint32_t vendev); 67 68 #endif 69