LXR uboot/include/pci

   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
  12struct 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
  20struct 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 */
  40enum 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 */
  53int 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 */
  66uint32_t board_map_oprom_vendev(uint32_t vendev);
  67
  68#endif
  69