[J-u-boot.git] / include / pci_rom.h

/*
 * 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,
};

 /**
 * 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
Commit	Line	Data
6854f87c SG	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
6854f87c SG	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
bc17d8f4 SG	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
6854f87c	46	/**
3f4e1e8e	47	* dm_pci_run_vga_bios() - Run the VGA BIOS in an x86 PC
6854f87c SG	48	*
	49	* @dev: Video device containing the BIOS
	50	* @int15_handler: Function to call to handle int 0x15
bc17d8f4	51	* @exec_method: flags from enum pci_rom_emul
6854f87c	52	*/
3f4e1e8e SG	53	int dm_pci_run_vga_bios(struct udevice dev, int (int15_handler)(void),
3f4e1e8e SG	54	int exec_method);
6854f87c SG	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