pci_rom.h
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/*
* From coreboot file of same name
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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,
};
/**
* 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 pci_run_vga_bios(pci_dev_t 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