Eric Lee / smarc-uboot

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Commit 1db561e11f2b6b6cd8f64035cc12b067dd6c1f91

Authored by Heinrich Schuchardt
1 parent 1504bb0d96
Exists in smarc_8mq_lf_v2020.04 and in 11 other branches 8qm-imx_v2020.04_5.4.70_2.3.0, emb_lf_v2022.04, pitx_8mp_lf_v2020.04, smarc-8m-android-10.0.0_2.6.0, smarc-8m-android-11.0.0_2.0.0, smarc-8mp-android-11.0.0_2.0.0, smarc_8m-imx_v2019.04_4.19.35_1.1.0, smarc_8mm-imx_v2019.04_4.19.35_1.1.0, smarc_8mm-imx_v2020.04_5.4.24_2.1.0, smarc_8mp_lf_v2020.04, smarc_8mq-imx_v2020.04_5.4.24_2.1.0

efi_loader: documentation of image loader 

- Add missing function descriptions.
- Update existing function descriptions to match Sphinx style.
- Add lib/efi_loader/efi_image_loader.c to the input files for Sphinx
  generated documentation.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

Showing 2 changed files with 25 additions and 9 deletions Inline Diff

Documentation/efi.rst
Diff comments   View file @ 1db561e
1 .. SPDX-License-Identifier: GPL-2.0+ 1 .. SPDX-License-Identifier: GPL-2.0+
2 2
3 EFI subsystem 3 EFI subsystem
4 ============= 4 =============
5 5
6 Boot services 6 Boot services
7 ------------- 7 -------------
8 8
9 .. kernel-doc:: lib/efi_loader/efi_boottime.c 9 .. kernel-doc:: lib/efi_loader/efi_boottime.c
10 :internal: 10 :internal:
11 11
12 Image relocation
13 ~~~~~~~~~~~~~~~~
14
15 .. kernel-doc:: lib/efi_loader/efi_image_loader.c
16 :internal:
17
12 Runtime services 18 Runtime services
13 ---------------- 19 ----------------
14 20
15 .. kernel-doc:: lib/efi_loader/efi_runtime.c 21 .. kernel-doc:: lib/efi_loader/efi_runtime.c
16 :internal: 22 :internal:
17 23
lib/efi_loader/efi_image_loader.c
Diff comments   View file @ 1db561e
1 // SPDX-License-Identifier: GPL-2.0+ 1 // SPDX-License-Identifier: GPL-2.0+
2 /* 2 /*
3 * EFI image loader 3 * EFI image loader
4 * 4 *
5 * based partly on wine code 5 * based partly on wine code
6 * 6 *
7 * Copyright (c) 2016 Alexander Graf 7 * Copyright (c) 2016 Alexander Graf
8 */ 8 */
9 9
10 #include <common.h> 10 #include <common.h>
11 #include <efi_loader.h> 11 #include <efi_loader.h>
12 #include <pe.h> 12 #include <pe.h>
13 13
14 const efi_guid_t efi_global_variable_guid = EFI_GLOBAL_VARIABLE_GUID; 14 const efi_guid_t efi_global_variable_guid = EFI_GLOBAL_VARIABLE_GUID;
15 const efi_guid_t efi_guid_device_path = DEVICE_PATH_GUID; 15 const efi_guid_t efi_guid_device_path = DEVICE_PATH_GUID;
16 const efi_guid_t efi_guid_loaded_image = LOADED_IMAGE_GUID; 16 const efi_guid_t efi_guid_loaded_image = LOADED_IMAGE_GUID;
17 const efi_guid_t efi_simple_file_system_protocol_guid = 17 const efi_guid_t efi_simple_file_system_protocol_guid =
18 EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID; 18 EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID;
19 const efi_guid_t efi_file_info_guid = EFI_FILE_INFO_GUID; 19 const efi_guid_t efi_file_info_guid = EFI_FILE_INFO_GUID;
20 20
21 static int machines[] = { 21 static int machines[] = {
22 #if defined(__aarch64__) 22 #if defined(__aarch64__)
23 IMAGE_FILE_MACHINE_ARM64, 23 IMAGE_FILE_MACHINE_ARM64,
24 #elif defined(__arm__) 24 #elif defined(__arm__)
25 IMAGE_FILE_MACHINE_ARM, 25 IMAGE_FILE_MACHINE_ARM,
26 IMAGE_FILE_MACHINE_THUMB, 26 IMAGE_FILE_MACHINE_THUMB,
27 IMAGE_FILE_MACHINE_ARMNT, 27 IMAGE_FILE_MACHINE_ARMNT,
28 #endif 28 #endif
29 29
30 #if defined(__x86_64__) 30 #if defined(__x86_64__)
31 IMAGE_FILE_MACHINE_AMD64, 31 IMAGE_FILE_MACHINE_AMD64,
32 #elif defined(__i386__) 32 #elif defined(__i386__)
33 IMAGE_FILE_MACHINE_I386, 33 IMAGE_FILE_MACHINE_I386,
34 #endif 34 #endif
35 35
36 #if defined(__riscv) && (__riscv_xlen == 32) 36 #if defined(__riscv) && (__riscv_xlen == 32)
37 IMAGE_FILE_MACHINE_RISCV32, 37 IMAGE_FILE_MACHINE_RISCV32,
38 #endif 38 #endif
39 39
40 #if defined(__riscv) && (__riscv_xlen == 64) 40 #if defined(__riscv) && (__riscv_xlen == 64)
41 IMAGE_FILE_MACHINE_RISCV64, 41 IMAGE_FILE_MACHINE_RISCV64,
42 #endif 42 #endif
43 0 }; 43 0 };
44 44
45 /* 45 /**
46 * Print information about a loaded image. 46 * efi_print_image_info() - print information about a loaded image
47 * 47 *
48 * If the program counter is located within the image the offset to the base 48 * If the program counter is located within the image the offset to the base
49 * address is shown. 49 * address is shown.
50 * 50 *
51 * @obj: EFI object 51 * @obj: EFI object
52 * @image: loaded image 52 * @image: loaded image
53 * @pc: program counter (use NULL to suppress offset output) 53 * @pc: program counter (use NULL to suppress offset output)
54 * @return: status code 54 * Return: status code
55 */ 55 */
56 static efi_status_t efi_print_image_info(struct efi_loaded_image_obj *obj, 56 static efi_status_t efi_print_image_info(struct efi_loaded_image_obj *obj,
57 struct efi_loaded_image *image, 57 struct efi_loaded_image *image,
58 void *pc) 58 void *pc)
59 { 59 {
60 printf("UEFI image"); 60 printf("UEFI image");
61 printf(" [0x%p:0x%p]", 61 printf(" [0x%p:0x%p]",
62 obj->reloc_base, obj->reloc_base + obj->reloc_size - 1); 62 obj->reloc_base, obj->reloc_base + obj->reloc_size - 1);
63 if (pc && pc >= obj->reloc_base && 63 if (pc && pc >= obj->reloc_base &&
64 pc < obj->reloc_base + obj->reloc_size) 64 pc < obj->reloc_base + obj->reloc_size)
65 printf(" pc=0x%zx", pc - obj->reloc_base); 65 printf(" pc=0x%zx", pc - obj->reloc_base);
66 if (image->file_path) 66 if (image->file_path)
67 printf(" '%pD'", image->file_path); 67 printf(" '%pD'", image->file_path);
68 printf("\n"); 68 printf("\n");
69 return EFI_SUCCESS; 69 return EFI_SUCCESS;
70 } 70 }
71 71
72 /* 72 /**
73 * Print information about all loaded images. 73 * efi_print_image_infos() - print information about all loaded images
74 * 74 *
75 * @pc: program counter (use NULL to suppress offset output) 75 * @pc: program counter (use NULL to suppress offset output)
76 */ 76 */
77 void efi_print_image_infos(void *pc) 77 void efi_print_image_infos(void *pc)
78 { 78 {
79 struct efi_object *efiobj; 79 struct efi_object *efiobj;
80 struct efi_handler *handler; 80 struct efi_handler *handler;
81 81
82 list_for_each_entry(efiobj, &efi_obj_list, link) { 82 list_for_each_entry(efiobj, &efi_obj_list, link) {
83 list_for_each_entry(handler, &efiobj->protocols, link) { 83 list_for_each_entry(handler, &efiobj->protocols, link) {
84 if (!guidcmp(handler->guid, &efi_guid_loaded_image)) { 84 if (!guidcmp(handler->guid, &efi_guid_loaded_image)) {
85 efi_print_image_info( 85 efi_print_image_info(
86 (struct efi_loaded_image_obj *)efiobj, 86 (struct efi_loaded_image_obj *)efiobj,
87 handler->protocol_interface, pc); 87 handler->protocol_interface, pc);
88 } 88 }
89 } 89 }
90 } 90 }
91 } 91 }
92 92
93 /**
94 * efi_loader_relocate() - relocate UEFI binary
95 *
96 * @rel: pointer to the relocation table
97 * @rel_size: size of the relocation table in bytes
98 * @efi_reloc: actual load address of the image
99 * @pref_address: preferred load address of the image
100 * Return: status code
101 */
93 static efi_status_t efi_loader_relocate(const IMAGE_BASE_RELOCATION *rel, 102 static efi_status_t efi_loader_relocate(const IMAGE_BASE_RELOCATION *rel,
94 unsigned long rel_size, void *efi_reloc, 103 unsigned long rel_size, void *efi_reloc,
95 unsigned long pref_address) 104 unsigned long pref_address)
96 { 105 {
97 unsigned long delta = (unsigned long)efi_reloc - pref_address; 106 unsigned long delta = (unsigned long)efi_reloc - pref_address;
98 const IMAGE_BASE_RELOCATION *end; 107 const IMAGE_BASE_RELOCATION *end;
99 int i; 108 int i;
100 109
101 if (delta == 0) 110 if (delta == 0)
102 return EFI_SUCCESS; 111 return EFI_SUCCESS;
103 112
104 end = (const IMAGE_BASE_RELOCATION *)((const char *)rel + rel_size); 113 end = (const IMAGE_BASE_RELOCATION *)((const char *)rel + rel_size);
105 while (rel < end - 1 && rel->SizeOfBlock) { 114 while (rel < end - 1 && rel->SizeOfBlock) {
106 const uint16_t *relocs = (const uint16_t *)(rel + 1); 115 const uint16_t *relocs = (const uint16_t *)(rel + 1);
107 i = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(uint16_t); 116 i = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(uint16_t);
108 while (i--) { 117 while (i--) {
109 uint32_t offset = (uint32_t)(*relocs & 0xfff) + 118 uint32_t offset = (uint32_t)(*relocs & 0xfff) +
110 rel->VirtualAddress; 119 rel->VirtualAddress;
111 int type = *relocs >> EFI_PAGE_SHIFT; 120 int type = *relocs >> EFI_PAGE_SHIFT;
112 uint64_t *x64 = efi_reloc + offset; 121 uint64_t *x64 = efi_reloc + offset;
113 uint32_t *x32 = efi_reloc + offset; 122 uint32_t *x32 = efi_reloc + offset;
114 uint16_t *x16 = efi_reloc + offset; 123 uint16_t *x16 = efi_reloc + offset;
115 124
116 switch (type) { 125 switch (type) {
117 case IMAGE_REL_BASED_ABSOLUTE: 126 case IMAGE_REL_BASED_ABSOLUTE:
118 break; 127 break;
119 case IMAGE_REL_BASED_HIGH: 128 case IMAGE_REL_BASED_HIGH:
120 *x16 += ((uint32_t)delta) >> 16; 129 *x16 += ((uint32_t)delta) >> 16;
121 break; 130 break;
122 case IMAGE_REL_BASED_LOW: 131 case IMAGE_REL_BASED_LOW:
123 *x16 += (uint16_t)delta; 132 *x16 += (uint16_t)delta;
124 break; 133 break;
125 case IMAGE_REL_BASED_HIGHLOW: 134 case IMAGE_REL_BASED_HIGHLOW:
126 *x32 += (uint32_t)delta; 135 *x32 += (uint32_t)delta;
127 break; 136 break;
128 case IMAGE_REL_BASED_DIR64: 137 case IMAGE_REL_BASED_DIR64:
129 *x64 += (uint64_t)delta; 138 *x64 += (uint64_t)delta;
130 break; 139 break;
131 #ifdef __riscv 140 #ifdef __riscv
132 case IMAGE_REL_BASED_RISCV_HI20: 141 case IMAGE_REL_BASED_RISCV_HI20:
133 *x32 = ((*x32 & 0xfffff000) + (uint32_t)delta) | 142 *x32 = ((*x32 & 0xfffff000) + (uint32_t)delta) |
134 (*x32 & 0x00000fff); 143 (*x32 & 0x00000fff);
135 break; 144 break;
136 case IMAGE_REL_BASED_RISCV_LOW12I: 145 case IMAGE_REL_BASED_RISCV_LOW12I:
137 case IMAGE_REL_BASED_RISCV_LOW12S: 146 case IMAGE_REL_BASED_RISCV_LOW12S:
138 /* We know that we're 4k aligned */ 147 /* We know that we're 4k aligned */
139 if (delta & 0xfff) { 148 if (delta & 0xfff) {
140 printf("Unsupported reloc offset\n"); 149 printf("Unsupported reloc offset\n");
141 return EFI_LOAD_ERROR; 150 return EFI_LOAD_ERROR;
142 } 151 }
143 break; 152 break;
144 #endif 153 #endif
145 default: 154 default:
146 printf("Unknown Relocation off %x type %x\n", 155 printf("Unknown Relocation off %x type %x\n",
147 offset, type); 156 offset, type);
148 return EFI_LOAD_ERROR; 157 return EFI_LOAD_ERROR;
149 } 158 }
150 relocs++; 159 relocs++;
151 } 160 }
152 rel = (const IMAGE_BASE_RELOCATION *)relocs; 161 rel = (const IMAGE_BASE_RELOCATION *)relocs;
153 } 162 }
154 return EFI_SUCCESS; 163 return EFI_SUCCESS;
155 } 164 }
156 165
157 void __weak invalidate_icache_all(void) 166 void __weak invalidate_icache_all(void)
158 { 167 {
159 /* If the system doesn't support icache_all flush, cross our fingers */ 168 /* If the system doesn't support icache_all flush, cross our fingers */
160 } 169 }
161 170
162 /* 171 /**
163 * Determine the memory types to be used for code and data. 172 * efi_set_code_and_data_type() - determine the memory types to be used for code
173 * and data.
164 * 174 *
165 * @loaded_image_info image descriptor 175 * @loaded_image_info: image descriptor
166 * @image_type field Subsystem of the optional header for 176 * @image_type: field Subsystem of the optional header for
167 * Windows specific field 177 * Windows specific field
168 */ 178 */
169 static void efi_set_code_and_data_type( 179 static void efi_set_code_and_data_type(
170 struct efi_loaded_image *loaded_image_info, 180 struct efi_loaded_image *loaded_image_info,
171 uint16_t image_type) 181 uint16_t image_type)
172 { 182 {
173 switch (image_type) { 183 switch (image_type) {
174 case IMAGE_SUBSYSTEM_EFI_APPLICATION: 184 case IMAGE_SUBSYSTEM_EFI_APPLICATION:
175 loaded_image_info->image_code_type = EFI_LOADER_CODE; 185 loaded_image_info->image_code_type = EFI_LOADER_CODE;
176 loaded_image_info->image_data_type = EFI_LOADER_DATA; 186 loaded_image_info->image_data_type = EFI_LOADER_DATA;
177 break; 187 break;
178 case IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER: 188 case IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER:
179 loaded_image_info->image_code_type = EFI_BOOT_SERVICES_CODE; 189 loaded_image_info->image_code_type = EFI_BOOT_SERVICES_CODE;
180 loaded_image_info->image_data_type = EFI_BOOT_SERVICES_DATA; 190 loaded_image_info->image_data_type = EFI_BOOT_SERVICES_DATA;
181 break; 191 break;
182 case IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER: 192 case IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER:
183 case IMAGE_SUBSYSTEM_EFI_ROM: 193 case IMAGE_SUBSYSTEM_EFI_ROM:
184 loaded_image_info->image_code_type = EFI_RUNTIME_SERVICES_CODE; 194 loaded_image_info->image_code_type = EFI_RUNTIME_SERVICES_CODE;
185 loaded_image_info->image_data_type = EFI_RUNTIME_SERVICES_DATA; 195 loaded_image_info->image_data_type = EFI_RUNTIME_SERVICES_DATA;
186 break; 196 break;
187 default: 197 default:
188 printf("%s: invalid image type: %u\n", __func__, image_type); 198 printf("%s: invalid image type: %u\n", __func__, image_type);
189 /* Let's assume it is an application */ 199 /* Let's assume it is an application */
190 loaded_image_info->image_code_type = EFI_LOADER_CODE; 200 loaded_image_info->image_code_type = EFI_LOADER_CODE;
191 loaded_image_info->image_data_type = EFI_LOADER_DATA; 201 loaded_image_info->image_data_type = EFI_LOADER_DATA;
192 break; 202 break;
193 } 203 }
194 } 204 }
195 205
196 /** 206 /**
197 * efi_load_pe() - relocate EFI binary 207 * efi_load_pe() - relocate EFI binary
198 * 208 *
199 * This function loads all sections from a PE binary into a newly reserved 209 * This function loads all sections from a PE binary into a newly reserved
200 * piece of memory. On success the entry point is returned as handle->entry. 210 * piece of memory. On success the entry point is returned as handle->entry.
201 * 211 *
202 * @handle: loaded image handle 212 * @handle: loaded image handle
203 * @efi: pointer to the EFI binary 213 * @efi: pointer to the EFI binary
204 * @loaded_image_info: loaded image protocol 214 * @loaded_image_info: loaded image protocol
205 * Return: status code 215 * Return: status code
206 */ 216 */
207 efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle, void *efi, 217 efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle, void *efi,
208 struct efi_loaded_image *loaded_image_info) 218 struct efi_loaded_image *loaded_image_info)
209 { 219 {
210 IMAGE_NT_HEADERS32 *nt; 220 IMAGE_NT_HEADERS32 *nt;
211 IMAGE_DOS_HEADER *dos; 221 IMAGE_DOS_HEADER *dos;
212 IMAGE_SECTION_HEADER *sections; 222 IMAGE_SECTION_HEADER *sections;
213 int num_sections; 223 int num_sections;
214 void *efi_reloc; 224 void *efi_reloc;
215 int i; 225 int i;
216 const IMAGE_BASE_RELOCATION *rel; 226 const IMAGE_BASE_RELOCATION *rel;
217 unsigned long rel_size; 227 unsigned long rel_size;
218 int rel_idx = IMAGE_DIRECTORY_ENTRY_BASERELOC; 228 int rel_idx = IMAGE_DIRECTORY_ENTRY_BASERELOC;
219 uint64_t image_base; 229 uint64_t image_base;
220 uint64_t image_size; 230 uint64_t image_size;
221 unsigned long virt_size = 0; 231 unsigned long virt_size = 0;
222 int supported = 0; 232 int supported = 0;
223 233
224 dos = efi; 234 dos = efi;
225 if (dos->e_magic != IMAGE_DOS_SIGNATURE) { 235 if (dos->e_magic != IMAGE_DOS_SIGNATURE) {
226 printf("%s: Invalid DOS Signature\n", __func__); 236 printf("%s: Invalid DOS Signature\n", __func__);
227 return EFI_LOAD_ERROR; 237 return EFI_LOAD_ERROR;
228 } 238 }
229 239
230 nt = (void *) ((char *)efi + dos->e_lfanew); 240 nt = (void *) ((char *)efi + dos->e_lfanew);
231 if (nt->Signature != IMAGE_NT_SIGNATURE) { 241 if (nt->Signature != IMAGE_NT_SIGNATURE) {
232 printf("%s: Invalid NT Signature\n", __func__); 242 printf("%s: Invalid NT Signature\n", __func__);
233 return EFI_LOAD_ERROR; 243 return EFI_LOAD_ERROR;
234 } 244 }
235 245
236 for (i = 0; machines[i]; i++) 246 for (i = 0; machines[i]; i++)
237 if (machines[i] == nt->FileHeader.Machine) { 247 if (machines[i] == nt->FileHeader.Machine) {
238 supported = 1; 248 supported = 1;
239 break; 249 break;
240 } 250 }
241 251
242 if (!supported) { 252 if (!supported) {
243 printf("%s: Machine type 0x%04x is not supported\n", 253 printf("%s: Machine type 0x%04x is not supported\n",
244 __func__, nt->FileHeader.Machine); 254 __func__, nt->FileHeader.Machine);
245 return EFI_LOAD_ERROR; 255 return EFI_LOAD_ERROR;
246 } 256 }
247 257
248 /* Calculate upper virtual address boundary */ 258 /* Calculate upper virtual address boundary */
249 num_sections = nt->FileHeader.NumberOfSections; 259 num_sections = nt->FileHeader.NumberOfSections;
250 sections = (void *)&nt->OptionalHeader + 260 sections = (void *)&nt->OptionalHeader +
251 nt->FileHeader.SizeOfOptionalHeader; 261 nt->FileHeader.SizeOfOptionalHeader;
252 262
253 for (i = num_sections - 1; i >= 0; i--) { 263 for (i = num_sections - 1; i >= 0; i--) {
254 IMAGE_SECTION_HEADER *sec = &sections[i]; 264 IMAGE_SECTION_HEADER *sec = &sections[i];
255 virt_size = max_t(unsigned long, virt_size, 265 virt_size = max_t(unsigned long, virt_size,
256 sec->VirtualAddress + sec->Misc.VirtualSize); 266 sec->VirtualAddress + sec->Misc.VirtualSize);
257 } 267 }
258 268
259 /* Read 32/64bit specific header bits */ 269 /* Read 32/64bit specific header bits */
260 if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC) { 270 if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
261 IMAGE_NT_HEADERS64 *nt64 = (void *)nt; 271 IMAGE_NT_HEADERS64 *nt64 = (void *)nt;
262 IMAGE_OPTIONAL_HEADER64 *opt = &nt64->OptionalHeader; 272 IMAGE_OPTIONAL_HEADER64 *opt = &nt64->OptionalHeader;
263 image_base = opt->ImageBase; 273 image_base = opt->ImageBase;
264 image_size = opt->SizeOfImage; 274 image_size = opt->SizeOfImage;
265 efi_set_code_and_data_type(loaded_image_info, opt->Subsystem); 275 efi_set_code_and_data_type(loaded_image_info, opt->Subsystem);
266 efi_reloc = efi_alloc(virt_size, 276 efi_reloc = efi_alloc(virt_size,
267 loaded_image_info->image_code_type); 277 loaded_image_info->image_code_type);
268 if (!efi_reloc) { 278 if (!efi_reloc) {
269 printf("%s: Could not allocate %lu bytes\n", 279 printf("%s: Could not allocate %lu bytes\n",
270 __func__, virt_size); 280 __func__, virt_size);
271 return EFI_OUT_OF_RESOURCES; 281 return EFI_OUT_OF_RESOURCES;
272 } 282 }
273 handle->entry = efi_reloc + opt->AddressOfEntryPoint; 283 handle->entry = efi_reloc + opt->AddressOfEntryPoint;
274 rel_size = opt->DataDirectory[rel_idx].Size; 284 rel_size = opt->DataDirectory[rel_idx].Size;
275 rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress; 285 rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress;
276 virt_size = ALIGN(virt_size, opt->SectionAlignment); 286 virt_size = ALIGN(virt_size, opt->SectionAlignment);
277 } else if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) { 287 } else if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
278 IMAGE_OPTIONAL_HEADER32 *opt = &nt->OptionalHeader; 288 IMAGE_OPTIONAL_HEADER32 *opt = &nt->OptionalHeader;
279 image_base = opt->ImageBase; 289 image_base = opt->ImageBase;
280 image_size = opt->SizeOfImage; 290 image_size = opt->SizeOfImage;
281 efi_set_code_and_data_type(loaded_image_info, opt->Subsystem); 291 efi_set_code_and_data_type(loaded_image_info, opt->Subsystem);
282 efi_reloc = efi_alloc(virt_size, 292 efi_reloc = efi_alloc(virt_size,
283 loaded_image_info->image_code_type); 293 loaded_image_info->image_code_type);
284 if (!efi_reloc) { 294 if (!efi_reloc) {
285 printf("%s: Could not allocate %lu bytes\n", 295 printf("%s: Could not allocate %lu bytes\n",
286 __func__, virt_size); 296 __func__, virt_size);
287 return EFI_OUT_OF_RESOURCES; 297 return EFI_OUT_OF_RESOURCES;
288 } 298 }
289 handle->entry = efi_reloc + opt->AddressOfEntryPoint; 299 handle->entry = efi_reloc + opt->AddressOfEntryPoint;
290 rel_size = opt->DataDirectory[rel_idx].Size; 300 rel_size = opt->DataDirectory[rel_idx].Size;
291 rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress; 301 rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress;
292 virt_size = ALIGN(virt_size, opt->SectionAlignment); 302 virt_size = ALIGN(virt_size, opt->SectionAlignment);
293 } else { 303 } else {
294 printf("%s: Invalid optional header magic %x\n", __func__, 304 printf("%s: Invalid optional header magic %x\n", __func__,
295 nt->OptionalHeader.Magic); 305 nt->OptionalHeader.Magic);
296 return EFI_LOAD_ERROR; 306 return EFI_LOAD_ERROR;
297 } 307 }
298 308
299 /* Load sections into RAM */ 309 /* Load sections into RAM */
300 for (i = num_sections - 1; i >= 0; i--) { 310 for (i = num_sections - 1; i >= 0; i--) {
301 IMAGE_SECTION_HEADER *sec = &sections[i]; 311 IMAGE_SECTION_HEADER *sec = &sections[i];
302 memset(efi_reloc + sec->VirtualAddress, 0, 312 memset(efi_reloc + sec->VirtualAddress, 0,
303 sec->Misc.VirtualSize); 313 sec->Misc.VirtualSize);
304 memcpy(efi_reloc + sec->VirtualAddress, 314 memcpy(efi_reloc + sec->VirtualAddress,
305 efi + sec->PointerToRawData, 315 efi + sec->PointerToRawData,
306 sec->SizeOfRawData); 316 sec->SizeOfRawData);
307 } 317 }
308 318
309 /* Run through relocations */ 319 /* Run through relocations */
310 if (efi_loader_relocate(rel, rel_size, efi_reloc, 320 if (efi_loader_relocate(rel, rel_size, efi_reloc,
311 (unsigned long)image_base) != EFI_SUCCESS) { 321 (unsigned long)image_base) != EFI_SUCCESS) {
312 efi_free_pages((uintptr_t) efi_reloc, 322 efi_free_pages((uintptr_t) efi_reloc,
313 (virt_size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT); 323 (virt_size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT);
314 return EFI_LOAD_ERROR; 324 return EFI_LOAD_ERROR;
315 } 325 }
316 326
317 /* Flush cache */ 327 /* Flush cache */
318 flush_cache((ulong)efi_reloc, 328 flush_cache((ulong)efi_reloc,
319 ALIGN(virt_size, EFI_CACHELINE_SIZE)); 329 ALIGN(virt_size, EFI_CACHELINE_SIZE));
320 invalidate_icache_all(); 330 invalidate_icache_all();
321 331
322 /* Populate the loaded image interface bits */ 332 /* Populate the loaded image interface bits */
323 loaded_image_info->image_base = efi; 333 loaded_image_info->image_base = efi;
324 loaded_image_info->image_size = image_size; 334 loaded_image_info->image_size = image_size;
325 handle->reloc_base = efi_reloc; 335 handle->reloc_base = efi_reloc;
326 handle->reloc_size = virt_size; 336 handle->reloc_size = virt_size;
327 337
328 return EFI_SUCCESS; 338 return EFI_SUCCESS;
329 } 339 }
330 340