xref: /linux/drivers/firmware/efi/libstub/zboot-header.S (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
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 - ZBOOT_SIZE_LEN	// 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		IMAGE_DLL_CHARACTERISTICS_NX_COMPAT
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#if defined(PE_DLL_CHAR_EX) || defined(CONFIG_DEBUG_EFI)
82	.long		.Lefi_debug_table - .Ldoshdr	// DebugTable
83	.long		.Lefi_debug_table_size
84
85	.section	".rodata", "a"
86	.p2align	2
87.Lefi_debug_table:
88	// EFI_IMAGE_DEBUG_DIRECTORY_ENTRY[]
89#ifdef PE_DLL_CHAR_EX
90	.long		0					// Characteristics
91	.long		0					// TimeDateStamp
92	.short		0					// MajorVersion
93	.short		0					// MinorVersion
94	.long		IMAGE_DEBUG_TYPE_EX_DLLCHARACTERISTICS	// Type
95	.long		4					// SizeOfData
96	.long		0					// RVA
97	.long		.Lefi_dll_characteristics_ex - .Ldoshdr	// FileOffset
98#endif
99#ifdef CONFIG_DEBUG_EFI
100	.long		0					// Characteristics
101	.long		0					// TimeDateStamp
102	.short		0					// MajorVersion
103	.short		0					// MinorVersion
104	.long		IMAGE_DEBUG_TYPE_CODEVIEW		// Type
105	.long		.Lefi_debug_entry_size			// SizeOfData
106	.long		0					// RVA
107	.long		.Lefi_debug_entry - .Ldoshdr		// FileOffset
108#endif
109	.set		.Lefi_debug_table_size, . - .Lefi_debug_table
110	.previous
111#endif
112
113.Lsection_table:
114	.ascii		".text\0\0\0"
115	.long		_etext - .Lefi_header_end
116	.long		.Lefi_header_end - .Ldoshdr
117	.long		_etext - .Lefi_header_end
118	.long		.Lefi_header_end - .Ldoshdr
119
120	.long		0, 0
121	.short		0, 0
122	.long		IMAGE_SCN_CNT_CODE | \
123			IMAGE_SCN_MEM_READ | \
124			IMAGE_SCN_MEM_EXECUTE
125
126	.ascii		".data\0\0\0"
127	.long		__data_size
128	.long		_etext - .Ldoshdr
129	.long		__data_rawsize
130	.long		_etext - .Ldoshdr
131
132	.long		0, 0
133	.short		0, 0
134	.long		IMAGE_SCN_CNT_INITIALIZED_DATA | \
135			IMAGE_SCN_MEM_READ | \
136			IMAGE_SCN_MEM_WRITE
137
138	.set		.Lsection_count, (. - .Lsection_table) / 40
139
140#ifdef PE_DLL_CHAR_EX
141.Lefi_dll_characteristics_ex:
142	.long		PE_DLL_CHAR_EX
143#endif
144#ifdef CONFIG_DEBUG_EFI
145.Lefi_debug_entry:
146	// EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY
147	.ascii		"NB10"				// Signature
148	.long		0				// Unknown
149	.long		0				// Unknown2
150	.long		0				// Unknown3
151
152	.asciz		ZBOOT_EFI_PATH
153
154	.set		.Lefi_debug_entry_size, . - .Lefi_debug_entry
155#endif
156
157	.p2align	12
158.Lefi_header_end:
159
160