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Tom Rini83d290c2018-05-06 17:58:06 -04001/* SPDX-License-Identifier: GPL-2.0+ */
Simon Glass6854f872014-11-14 20:56:33 -07002/*
3 * From coreboot file of same name
Simon Glass6854f872014-11-14 20:56:33 -07004 */
5
6#ifndef _PCI_ROM_H
7#define _PCI_ROM_H
8
9#define PCI_ROM_HDR 0xaa55
Simon Glass6854f872014-11-14 20:56:33 -070010
11struct 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
19struct 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
Simon Glassbc17d8f2015-01-27 22:13:34 -070035/*
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 */
39enum 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
Simon Glass6854f872014-11-14 20:56:33 -070045 /**
Simon Glass3f4e1e82015-11-29 13:17:57 -070046 * dm_pci_run_vga_bios() - Run the VGA BIOS in an x86 PC
Simon Glass6854f872014-11-14 20:56:33 -070047 *
48 * @dev: Video device containing the BIOS
49 * @int15_handler: Function to call to handle int 0x15
Simon Glassbc17d8f2015-01-27 22:13:34 -070050 * @exec_method: flags from enum pci_rom_emul
Simon Glass6854f872014-11-14 20:56:33 -070051 */
Simon Glass3f4e1e82015-11-29 13:17:57 -070052int dm_pci_run_vga_bios(struct udevice *dev, int (*int15_handler)(void),
53 int exec_method);
Simon Glass6854f872014-11-14 20:56:33 -070054
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 */
65uint32_t board_map_oprom_vendev(uint32_t vendev);
66
67#endif