src/boot/efi/linux.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #define SETUP_MAGIC             0x53726448      /* "HdrS" */
   5
   6 struct setup_header {
   7         UINT8  setup_sects;
   8         UINT16 root_flags;
   9         UINT32 syssize;
  10         UINT16 ram_size;
  11         UINT16 vid_mode;
  12         UINT16 root_dev;
  13         UINT16 boot_flag;
  14         UINT16 jump;
  15         UINT32 header;
  16         UINT16 version;
  17         UINT32 realmode_swtch;
  18         UINT16 start_sys_seg;
  19         UINT16 kernel_version;
  20         UINT8  type_of_loader;
  21         UINT8  loadflags;
  22         UINT16 setup_move_size;
  23         UINT32 code32_start;
  24         UINT32 ramdisk_image;
  25         UINT32 ramdisk_size;
  26         UINT32 bootsect_kludge;
  27         UINT16 heap_end_ptr;
  28         UINT8  ext_loader_ver;
  29         UINT8  ext_loader_type;
  30         UINT32 cmd_line_ptr;
  31         UINT32 initrd_addr_max;
  32         UINT32 kernel_alignment;
  33         UINT8  relocatable_kernel;
  34         UINT8  min_alignment;
  35         UINT16 xloadflags;
  36         UINT32 cmdline_size;
  37         UINT32 hardware_subarch;
  38         UINT64 hardware_subarch_data;
  39         UINT32 payload_offset;
  40         UINT32 payload_length;
  41         UINT64 setup_data;
  42         UINT64 pref_address;
  43         UINT32 init_size;
  44         UINT32 handover_offset;
  45 } __attribute__((packed));
  46
  47 /* adapted from linux' bootparam.h */
  48 struct boot_params {
  49         UINT8  screen_info[64];         // was: struct screen_info
  50         UINT8  apm_bios_info[20];       // was: struct apm_bios_info
  51         UINT8  _pad2[4];
  52         UINT64 tboot_addr;
  53         UINT8  ist_info[16];            // was: struct ist_info
  54         UINT8  _pad3[16];
  55         UINT8  hd0_info[16];
  56         UINT8  hd1_info[16];
  57         UINT8  sys_desc_table[16];      // was: struct sys_desc_table
  58         UINT8  olpc_ofw_header[16];     // was: struct olpc_ofw_header
  59         UINT32 ext_ramdisk_image;
  60         UINT32 ext_ramdisk_size;
  61         UINT32 ext_cmd_line_ptr;
  62         UINT8  _pad4[116];
  63         UINT8  edid_info[128];          // was: struct edid_info
  64         UINT8  efi_info[32];            // was: struct efi_info
  65         UINT32 alt_mem_k;
  66         UINT32 scratch;
  67         UINT8  e820_entries;
  68         UINT8  eddbuf_entries;
  69         UINT8  edd_mbr_sig_buf_entries;
  70         UINT8  kbd_status;
  71         UINT8  secure_boot;
  72         UINT8  _pad5[2];
  73         UINT8  sentinel;
  74         UINT8  _pad6[1];
  75         struct setup_header hdr;
  76         UINT8  _pad7[0x290-0x1f1-sizeof(struct setup_header)];
  77         UINT32 edd_mbr_sig_buffer[16];  // was: edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]
  78         UINT8  e820_table[20*128];      // was: struct boot_e820_entry e820_table[E820_MAX_ENTRIES_ZEROPAGE]
  79         UINT8  _pad8[48];
  80         UINT8  eddbuf[6*82];            // was: struct edd_info eddbuf[EDDMAXNR]
  81         UINT8  _pad9[276];
  82 } __attribute__((packed));
  83
  84 EFI_STATUS linux_exec(EFI_HANDLE *image,
  85                       CHAR8 *cmdline, UINTN cmdline_size,
  86                       UINTN linux_addr,
  87                       UINTN initrd_addr, UINTN initrd_size);