src/include/device/pci_rom.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef PCI_ROM_H
   4 #define PCI_ROM_H
   5
   6 #include <endian.h>
   7 #include <acpi/acpi.h>
   8 #include <cbfs.h>
   9 #include <stdint.h>
  10
  11 #define PCI_ROM_HDR 0xAA55
  12 #define PCI_DATA_HDR ((uint32_t)(('R' << 24) | ('I' << 16) | ('C' << 8) | 'P'))
  13
  14 #define PCI_RAM_IMAGE_START 0xD0000
  15 #define PCI_VGA_RAM_IMAGE_START 0xC0000
  16
  17 struct rom_header {
  18         uint16_t        signature;
  19         uint8_t         size;
  20         uint8_t         init[3];
  21         uint8_t         reserved[0x12];
  22         uint16_t        data;
  23 };
  24
  25 struct  pci_data {
  26         uint32_t        signature;
  27         uint16_t        vendor;
  28         uint16_t        device;
  29         uint16_t        reserved_1;
  30         uint16_t        dlen;
  31         uint8_t         drevision;
  32         uint8_t         class_lo;
  33         uint16_t        class_hi;
  34         uint16_t        ilen;
  35         uint16_t        irevision;
  36         uint8_t         type;
  37         uint8_t         indicator;
  38         uint16_t        reserved_2;
  39 };
  40
  41 void vga_oprom_preload(void);
  42 struct rom_header *pci_rom_probe(const struct device *dev);
  43 struct rom_header *pci_rom_load(struct device *dev,
  44         struct rom_header *rom_header);
  45
  46 static inline void pci_rom_free(struct rom_header *rom_header)
  47 {
  48         cbfs_unmap(rom_header);
  49 }
  50
  51 unsigned long
  52 pci_rom_write_acpi_tables(const struct device *device,
  53                                                   unsigned long current,
  54                                                   struct acpi_rsdp *rsdp);
  55
  56 void pci_rom_ssdt(const struct device *device);
  57
  58 u32 map_oprom_vendev(u32 vendev);
  59
  60 int verified_boot_should_run_oprom(struct rom_header *rom_header);
  61 #endif