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path: root/drivers/firmware/efi/libstub/zboot-header.S
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Diffstat (limited to 'drivers/firmware/efi/libstub/zboot-header.S')
-rw-r--r--drivers/firmware/efi/libstub/zboot-header.S159
1 files changed, 159 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/zboot-header.S b/drivers/firmware/efi/libstub/zboot-header.S
new file mode 100644
index 0000000000..fb676ded47
--- /dev/null
+++ b/drivers/firmware/efi/libstub/zboot-header.S
@@ -0,0 +1,159 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include <linux/pe.h>
+
+#ifdef CONFIG_64BIT
+ .set .Lextra_characteristics, 0x0
+ .set .Lpe_opt_magic, PE_OPT_MAGIC_PE32PLUS
+#else
+ .set .Lextra_characteristics, IMAGE_FILE_32BIT_MACHINE
+ .set .Lpe_opt_magic, PE_OPT_MAGIC_PE32
+#endif
+
+ .section ".head", "a"
+ .globl __efistub_efi_zboot_header
+__efistub_efi_zboot_header:
+.Ldoshdr:
+ .long MZ_MAGIC
+ .ascii "zimg" // image type
+ .long __efistub__gzdata_start - .Ldoshdr // payload offset
+ .long __efistub__gzdata_size - ZBOOT_SIZE_LEN // payload size
+ .long 0, 0 // reserved
+ .asciz COMP_TYPE // compression type
+ .org .Ldoshdr + 0x38
+ .long LINUX_PE_MAGIC
+ .long .Lpehdr - .Ldoshdr // PE header offset
+
+.Lpehdr:
+ .long PE_MAGIC
+ .short MACHINE_TYPE
+ .short .Lsection_count
+ .long 0
+ .long 0
+ .long 0
+ .short .Lsection_table - .Loptional_header
+ .short IMAGE_FILE_DEBUG_STRIPPED | \
+ IMAGE_FILE_EXECUTABLE_IMAGE | \
+ IMAGE_FILE_LINE_NUMS_STRIPPED |\
+ .Lextra_characteristics
+
+.Loptional_header:
+ .short .Lpe_opt_magic
+ .byte 0, 0
+ .long _etext - .Lefi_header_end
+ .long __data_size
+ .long 0
+ .long __efistub_efi_zboot_entry - .Ldoshdr
+ .long .Lefi_header_end - .Ldoshdr
+
+#ifdef CONFIG_64BIT
+ .quad 0
+#else
+ .long _etext - .Ldoshdr, 0x0
+#endif
+ .long 4096
+ .long 512
+ .short 0, 0
+ .short LINUX_EFISTUB_MAJOR_VERSION // MajorImageVersion
+ .short LINUX_EFISTUB_MINOR_VERSION // MinorImageVersion
+ .short 0, 0
+ .long 0
+ .long _end - .Ldoshdr
+
+ .long .Lefi_header_end - .Ldoshdr
+ .long 0
+ .short IMAGE_SUBSYSTEM_EFI_APPLICATION
+ .short IMAGE_DLL_CHARACTERISTICS_NX_COMPAT
+#ifdef CONFIG_64BIT
+ .quad 0, 0, 0, 0
+#else
+ .long 0, 0, 0, 0
+#endif
+ .long 0
+ .long (.Lsection_table - .) / 8
+
+ .quad 0 // ExportTable
+ .quad 0 // ImportTable
+ .quad 0 // ResourceTable
+ .quad 0 // ExceptionTable
+ .quad 0 // CertificationTable
+ .quad 0 // BaseRelocationTable
+#if defined(PE_DLL_CHAR_EX) || defined(CONFIG_DEBUG_EFI)
+ .long .Lefi_debug_table - .Ldoshdr // DebugTable
+ .long .Lefi_debug_table_size
+
+ .section ".rodata", "a"
+ .p2align 2
+.Lefi_debug_table:
+ // EFI_IMAGE_DEBUG_DIRECTORY_ENTRY[]
+#ifdef PE_DLL_CHAR_EX
+ .long 0 // Characteristics
+ .long 0 // TimeDateStamp
+ .short 0 // MajorVersion
+ .short 0 // MinorVersion
+ .long IMAGE_DEBUG_TYPE_EX_DLLCHARACTERISTICS // Type
+ .long 4 // SizeOfData
+ .long 0 // RVA
+ .long .Lefi_dll_characteristics_ex - .Ldoshdr // FileOffset
+#endif
+#ifdef CONFIG_DEBUG_EFI
+ .long 0 // Characteristics
+ .long 0 // TimeDateStamp
+ .short 0 // MajorVersion
+ .short 0 // MinorVersion
+ .long IMAGE_DEBUG_TYPE_CODEVIEW // Type
+ .long .Lefi_debug_entry_size // SizeOfData
+ .long 0 // RVA
+ .long .Lefi_debug_entry - .Ldoshdr // FileOffset
+#endif
+ .set .Lefi_debug_table_size, . - .Lefi_debug_table
+ .previous
+#endif
+
+.Lsection_table:
+ .ascii ".text\0\0\0"
+ .long _etext - .Lefi_header_end
+ .long .Lefi_header_end - .Ldoshdr
+ .long _etext - .Lefi_header_end
+ .long .Lefi_header_end - .Ldoshdr
+
+ .long 0, 0
+ .short 0, 0
+ .long IMAGE_SCN_CNT_CODE | \
+ IMAGE_SCN_MEM_READ | \
+ IMAGE_SCN_MEM_EXECUTE
+
+ .ascii ".data\0\0\0"
+ .long __data_size
+ .long _etext - .Ldoshdr
+ .long __data_rawsize
+ .long _etext - .Ldoshdr
+
+ .long 0, 0
+ .short 0, 0
+ .long IMAGE_SCN_CNT_INITIALIZED_DATA | \
+ IMAGE_SCN_MEM_READ | \
+ IMAGE_SCN_MEM_WRITE
+
+ .set .Lsection_count, (. - .Lsection_table) / 40
+
+#ifdef PE_DLL_CHAR_EX
+.Lefi_dll_characteristics_ex:
+ .long PE_DLL_CHAR_EX
+#endif
+#ifdef CONFIG_DEBUG_EFI
+.Lefi_debug_entry:
+ // EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY
+ .ascii "NB10" // Signature
+ .long 0 // Unknown
+ .long 0 // Unknown2
+ .long 0 // Unknown3
+
+ .asciz ZBOOT_EFI_PATH
+
+ .set .Lefi_debug_entry_size, . - .Lefi_debug_entry
+#endif
+
+ .p2align 12
+.Lefi_header_end:
+