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https://github.com/AsahiLinux/u-boot
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bc17d8f4ac
If the BIOS emulator is not available, allow use of native execution if available, and vice versa. This can be controlled by the caller. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/*
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* From coreboot file of same name
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _PCI_ROM_H
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#define _PCI_ROM_H
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#define PCI_ROM_HDR 0xaa55
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struct pci_rom_header {
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uint16_t signature;
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uint8_t size;
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uint8_t init[3];
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uint8_t reserved[0x12];
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uint16_t data;
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};
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struct pci_rom_data {
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uint32_t signature;
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uint16_t vendor;
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uint16_t device;
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uint16_t reserved_1;
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uint16_t dlen;
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uint8_t drevision;
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uint8_t class_lo;
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uint16_t class_hi;
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uint16_t ilen;
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uint16_t irevision;
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uint8_t type;
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uint8_t indicator;
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uint16_t reserved_2;
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};
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/*
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* Determines which execution method is used and whether we allow falling back
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* to the other if the requested method is not available.
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*/
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enum pci_rom_emul {
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PCI_ROM_EMULATE = 0 << 0,
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PCI_ROM_USE_NATIVE = 1 << 0,
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PCI_ROM_ALLOW_FALLBACK = 1 << 1,
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};
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/**
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* pci_run_vga_bios() - Run the VGA BIOS in an x86 PC
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*
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* @dev: Video device containing the BIOS
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* @int15_handler: Function to call to handle int 0x15
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* @exec_method: flags from enum pci_rom_emul
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*/
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int pci_run_vga_bios(pci_dev_t dev, int (*int15_handler)(void),
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int exec_method);
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/**
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* board_map_oprom_vendev() - map several PCI IDs to the one the ROM expects
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*
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* Some VGA option roms are used for several chipsets but they only have one
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* PCI ID in their header. If we encounter such an option rom, we need to do
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* the mapping ourselves.
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*
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* @vendev: Vendor and device for the video device
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* @return standard vendor and device expected by the ROM
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*/
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uint32_t board_map_oprom_vendev(uint32_t vendev);
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#endif
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