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