drivers/firmware/efi/libstub/zboot-header.S

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #include <linux/pe.h>
   4
   5 #ifdef CONFIG_64BIT
   6         .set            .Lextra_characteristics, 0x0
   7         .set            .Lpe_opt_magic, PE_OPT_MAGIC_PE32PLUS
   8 #else
   9         .set            .Lextra_characteristics, IMAGE_FILE_32BIT_MACHINE
  10         .set            .Lpe_opt_magic, PE_OPT_MAGIC_PE32
  11 #endif
  12
  13         .section        ".head", "a"
  14         .globl          __efistub_efi_zboot_header
  15 __efistub_efi_zboot_header:
  16 .Ldoshdr:
  17         .long           MZ_MAGIC
  18         .ascii          "zimg"                                  // image type
  19         .long           __efistub__gzdata_start - .Ldoshdr      // payload offset
  20         .long           __efistub__gzdata_size - 12             // payload size
  21         .long           0, 0                                    // reserved
  22         .asciz          COMP_TYPE                               // compression type
  23         .org            .Ldoshdr + 0x38
  24         .long           LINUX_PE_MAGIC
  25         .long           .Lpehdr - .Ldoshdr                      // PE header offset
  26
  27 .Lpehdr:
  28         .long           PE_MAGIC
  29         .short          MACHINE_TYPE
  30         .short          .Lsection_count
  31         .long           0
  32         .long           0
  33         .long           0
  34         .short          .Lsection_table - .Loptional_header
  35         .short          IMAGE_FILE_DEBUG_STRIPPED | \
  36                         IMAGE_FILE_EXECUTABLE_IMAGE | \
  37                         IMAGE_FILE_LINE_NUMS_STRIPPED |\
  38                         .Lextra_characteristics
  39
  40 .Loptional_header:
  41         .short          .Lpe_opt_magic
  42         .byte           0, 0
  43         .long           _etext - .Lefi_header_end
  44         .long           __data_size
  45         .long           0
  46         .long           __efistub_efi_zboot_entry - .Ldoshdr
  47         .long           .Lefi_header_end - .Ldoshdr
  48
  49 #ifdef CONFIG_64BIT
  50         .quad           0
  51 #else
  52         .long           _etext - .Ldoshdr, 0x0
  53 #endif
  54         .long           4096
  55         .long           512
  56         .short          0, 0
  57         .short          LINUX_EFISTUB_MAJOR_VERSION     // MajorImageVersion
  58         .short          LINUX_EFISTUB_MINOR_VERSION     // MinorImageVersion
  59         .short          0, 0
  60         .long           0
  61         .long           _end - .Ldoshdr
  62
  63         .long           .Lefi_header_end - .Ldoshdr
  64         .long           0
  65         .short          IMAGE_SUBSYSTEM_EFI_APPLICATION
  66         .short          0
  67 #ifdef CONFIG_64BIT
  68         .quad           0, 0, 0, 0
  69 #else
  70         .long           0, 0, 0, 0
  71 #endif
  72         .long           0
  73         .long           (.Lsection_table - .) / 8
  74
  75         .quad           0                               // ExportTable
  76         .quad           0                               // ImportTable
  77         .quad           0                               // ResourceTable
  78         .quad           0                               // ExceptionTable
  79         .quad           0                               // CertificationTable
  80         .quad           0                               // BaseRelocationTable
  81 #ifdef CONFIG_DEBUG_EFI
  82         .long           .Lefi_debug_table - .Ldoshdr    // DebugTable
  83         .long           .Lefi_debug_table_size
  84 #endif
  85
  86 .Lsection_table:
  87         .ascii          ".text\0\0\0"
  88         .long           _etext - .Lefi_header_end
  89         .long           .Lefi_header_end - .Ldoshdr
  90         .long           _etext - .Lefi_header_end
  91         .long           .Lefi_header_end - .Ldoshdr
  92
  93         .long           0, 0
  94         .short          0, 0
  95         .long           IMAGE_SCN_CNT_CODE | \
  96                         IMAGE_SCN_MEM_READ | \
  97                         IMAGE_SCN_MEM_EXECUTE
  98
  99         .ascii          ".data\0\0\0"
 100         .long           __data_size
 101         .long           _etext - .Ldoshdr
 102         .long           __data_rawsize
 103         .long           _etext - .Ldoshdr
 104
 105         .long           0, 0
 106         .short          0, 0
 107         .long           IMAGE_SCN_CNT_INITIALIZED_DATA | \
 108                         IMAGE_SCN_MEM_READ | \
 109                         IMAGE_SCN_MEM_WRITE
 110
 111         .set            .Lsection_count, (. - .Lsection_table) / 40
 112
 113 #ifdef CONFIG_DEBUG_EFI
 114         .section        ".rodata", "a"
 115         .align          2
 116 .Lefi_debug_table:
 117         // EFI_IMAGE_DEBUG_DIRECTORY_ENTRY
 118         .long           0                               // Characteristics
 119         .long           0                               // TimeDateStamp
 120         .short          0                               // MajorVersion
 121         .short          0                               // MinorVersion
 122         .long           IMAGE_DEBUG_TYPE_CODEVIEW       // Type
 123         .long           .Lefi_debug_entry_size          // SizeOfData
 124         .long           0                               // RVA
 125         .long           .Lefi_debug_entry - .Ldoshdr    // FileOffset
 126
 127         .set            .Lefi_debug_table_size, . - .Lefi_debug_table
 128         .previous
 129
 130 .Lefi_debug_entry:
 131         // EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY
 132         .ascii          "NB10"                          // Signature
 133         .long           0                               // Unknown
 134         .long           0                               // Unknown2
 135         .long           0                               // Unknown3
 136
 137         .asciz          ZBOOT_EFI_PATH
 138
 139         .set            .Lefi_debug_entry_size, . - .Lefi_debug_entry
 140 #endif
 141
 142         .p2align        12
 143 .Lefi_header_end:
 144