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git01.mediatek.com / filogic / uboot / 090286379ab0eb4a8b5c6f50f1d476d96ac38849 / . / arch / arm / lib / crt0_arm_efi.S
blob: b45c034c23cb7ae62a513a37aaf165f07d77d93a [file] [log] [blame]
Tom Rini8b0c8a12018-05-06 18:27:01 -0400[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0+ OR BSD-2-Clause */
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]2/*
3 * crt0-efi-arm.S - PE/COFF header for ARM EFI applications
4 *
5 * Copright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
6 *
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]7 * This file is taken and modified from the gnu-efi project.
8 */
9
Heinrich Schuchardt467fd7a2018-01-31 18:45:35 +0000[diff] [blame]10#include <asm-generic/pe.h>
11
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]12 .section .text.head
13
14 /*
15 * Magic "MZ" signature for PE/COFF
16 */
17 .globl image_base
18image_base:
Heinrich Schuchardtd680e9a2019-07-11 06:39:32 +0200[diff] [blame]19 .short IMAGE_DOS_SIGNATURE /* 'MZ' */
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]20 .skip 58 /* 'MZ' + pad + offset == 64 */
21 .long pe_header - image_base /* Offset to the PE header */
22pe_header:
Heinrich Schuchardtd680e9a2019-07-11 06:39:32 +0200[diff] [blame]23 .long IMAGE_NT_SIGNATURE /* 'PE' */
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]24coff_header:
Heinrich Schuchardtd680e9a2019-07-11 06:39:32 +0200[diff] [blame]25 .short IMAGE_FILE_MACHINE_THUMB /* Mixed ARM/Thumb */
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]26 .short 2 /* nr_sections */
27 .long 0 /* TimeDateStamp */
28 .long 0 /* PointerToSymbolTable */
Bin Menga15de9e2018-10-02 07:39:33 -0700[diff] [blame]29 .long 0 /* NumberOfSymbols */
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]30 .short section_table - optional_header /* SizeOfOptionalHeader */
Bin Menga15de9e2018-10-02 07:39:33 -0700[diff] [blame]31 /* Characteristics */
32 .short (IMAGE_FILE_EXECUTABLE_IMAGE | \
33 IMAGE_FILE_LINE_NUMS_STRIPPED | \
34 IMAGE_FILE_LOCAL_SYMS_STRIPPED | \
35 IMAGE_FILE_32BIT_MACHINE | \
36 IMAGE_FILE_DEBUG_STRIPPED)
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]37optional_header:
Heinrich Schuchardtd680e9a2019-07-11 06:39:32 +0200[diff] [blame]38 .short IMAGE_NT_OPTIONAL_HDR32_MAGIC /* PE32 format */
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]39 .byte 0x02 /* MajorLinkerVersion */
40 .byte 0x14 /* MinorLinkerVersion */
41 .long _edata - _start /* SizeOfCode */
42 .long 0 /* SizeOfInitializedData */
43 .long 0 /* SizeOfUninitializedData */
44 .long _start - image_base /* AddressOfEntryPoint */
45 .long _start - image_base /* BaseOfCode */
46 .long 0 /* BaseOfData */
47
48extra_header_fields:
49 .long 0 /* image_base */
Heinrich Schuchardtf2634792022-01-14 21:40:15 +0100[diff] [blame]50 .long 0x200 /* SectionAlignment */
51 .long 0x200 /* FileAlignment */
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]52 .short 0 /* MajorOperatingSystemVersion */
53 .short 0 /* MinorOperatingSystemVersion */
54 .short 0 /* MajorImageVersion */
55 .short 0 /* MinorImageVersion */
56 .short 0 /* MajorSubsystemVersion */
57 .short 0 /* MinorSubsystemVersion */
58 .long 0 /* Win32VersionValue */
59
60 .long _edata - image_base /* SizeOfImage */
61
62 /*
63 * Everything before the kernel image is considered part of the header
64 */
65 .long _start - image_base /* SizeOfHeaders */
66 .long 0 /* CheckSum */
Heinrich Schuchardt467fd7a2018-01-31 18:45:35 +0000[diff] [blame]67 .short IMAGE_SUBSYSTEM_EFI_APPLICATION /* Subsystem */
Heinrich Schuchardt299425d2024-02-14 21:43:21 +0100[diff] [blame]68#if CONFIG_VENDOR_EFI
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]69 .short 0 /* DllCharacteristics */
Heinrich Schuchardt299425d2024-02-14 21:43:21 +0100[diff] [blame]70#else
71 .short IMAGE_DLLCHARACTERISTICS_NX_COMPAT
72#endif
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]73 .long 0 /* SizeOfStackReserve */
74 .long 0 /* SizeOfStackCommit */
75 .long 0 /* SizeOfHeapReserve */
76 .long 0 /* SizeOfHeapCommit */
77 .long 0 /* LoaderFlags */
78 .long 0x6 /* NumberOfRvaAndSizes */
79
80 .quad 0 /* ExportTable */
81 .quad 0 /* ImportTable */
82 .quad 0 /* ResourceTable */
83 .quad 0 /* ExceptionTable */
84 .quad 0 /* CertificationTable */
85 .quad 0 /* BaseRelocationTable */
86
87section_table:
88
89 /*
90 * The EFI application loader requires a relocation section
91 * because EFI applications must be relocatable. This is a
92 * dummy section as far as we are concerned.
93 */
94 .ascii ".reloc"
95 .byte 0
96 .byte 0 /* end of 0 padding of section name */
97 .long 0
98 .long 0
99 .long 0 /* SizeOfRawData */
100 .long 0 /* PointerToRawData */
101 .long 0 /* PointerToRelocations */
102 .long 0 /* PointerToLineNumbers */
103 .short 0 /* NumberOfRelocations */
104 .short 0 /* NumberOfLineNumbers */
105 .long 0x42100040 /* Characteristics (section flags) */
106
107 .ascii ".text"
108 .byte 0
109 .byte 0
110 .byte 0 /* end of 0 padding of section name */
111 .long _edata - _start /* VirtualSize */
112 .long _start - image_base /* VirtualAddress */
113 .long _edata - _start /* SizeOfRawData */
114 .long _start - image_base /* PointerToRawData */
115
116 .long 0 /* PointerToRelocations (0 for executables) */
117 .long 0 /* PointerToLineNumbers (0 for executables) */
118 .short 0 /* NumberOfRelocations (0 for executables) */
119 .short 0 /* NumberOfLineNumbers (0 for executables) */
120 .long 0xe0500020 /* Characteristics (section flags) */
121
Heinrich Schuchardt09028632024-02-26 22:24:07 +0100[diff] [blame^]122 .align 12
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]123_start:
124 stmfd sp!, {r0-r2, lr}
125
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]126 adr r1, .L_DYNAMIC
127 ldr r0, [r1]
128 add r1, r0, r1
Heinrich Schuchardt09028632024-02-26 22:24:07 +0100[diff] [blame^]129 adrl r0, image_base
Simon Glassfc03fb92016-11-07 08:47:10 -0700[diff] [blame]130 bl _relocate
131 teq r0, #0
132 bne 0f
133
134 ldmfd sp, {r0-r1}
135 bl efi_main
136
1370: add sp, sp, #12
138 ldr pc, [sp], #4
139
140.L_DYNAMIC:
141 .word _DYNAMIC - .