Commit | Line | Data |
---|---|---|
291f3632 MF |
1 | /* ----------------------------------------------------------------------- |
2 | * | |
3 | * Copyright 2011 Intel Corporation; author Matt Fleming | |
4 | * | |
5 | * This file is part of the Linux kernel, and is made available under | |
6 | * the terms of the GNU General Public License version 2. | |
7 | * | |
8 | * ----------------------------------------------------------------------- */ | |
9 | ||
10 | #include <linux/efi.h> | |
dd5fc854 | 11 | #include <linux/pci.h> |
291f3632 MF |
12 | #include <asm/efi.h> |
13 | #include <asm/setup.h> | |
14 | #include <asm/desc.h> | |
15 | ||
393f203f | 16 | #include "../string.h" |
291f3632 MF |
17 | #include "eboot.h" |
18 | ||
19 | static efi_system_table_t *sys_table; | |
20 | ||
84be8805 MF |
21 | static struct efi_config *efi_early; |
22 | ||
243b6754 AB |
23 | __pure const struct efi_config *__efi_early(void) |
24 | { | |
25 | return efi_early; | |
26 | } | |
204b0a1a | 27 | |
54b52d87 MF |
28 | #define BOOT_SERVICES(bits) \ |
29 | static void setup_boot_services##bits(struct efi_config *c) \ | |
30 | { \ | |
31 | efi_system_table_##bits##_t *table; \ | |
32 | efi_boot_services_##bits##_t *bt; \ | |
33 | \ | |
34 | table = (typeof(table))sys_table; \ | |
35 | \ | |
36 | c->text_output = table->con_out; \ | |
37 | \ | |
38 | bt = (typeof(bt))(unsigned long)(table->boottime); \ | |
39 | \ | |
40 | c->allocate_pool = bt->allocate_pool; \ | |
41 | c->allocate_pages = bt->allocate_pages; \ | |
42 | c->get_memory_map = bt->get_memory_map; \ | |
43 | c->free_pool = bt->free_pool; \ | |
44 | c->free_pages = bt->free_pages; \ | |
45 | c->locate_handle = bt->locate_handle; \ | |
46 | c->handle_protocol = bt->handle_protocol; \ | |
47 | c->exit_boot_services = bt->exit_boot_services; \ | |
48 | } | |
49 | BOOT_SERVICES(32); | |
50 | BOOT_SERVICES(64); | |
291f3632 | 51 | |
bd669475 | 52 | void efi_char16_printk(efi_system_table_t *, efi_char16_t *); |
54b52d87 MF |
53 | |
54 | static efi_status_t | |
c116e8d6 MF |
55 | __file_size32(void *__fh, efi_char16_t *filename_16, |
56 | void **handle, u64 *file_sz) | |
57 | { | |
58 | efi_file_handle_32_t *h, *fh = __fh; | |
59 | efi_file_info_t *info; | |
60 | efi_status_t status; | |
61 | efi_guid_t info_guid = EFI_FILE_INFO_ID; | |
62 | u32 info_sz; | |
63 | ||
64 | status = efi_early->call((unsigned long)fh->open, fh, &h, filename_16, | |
65 | EFI_FILE_MODE_READ, (u64)0); | |
66 | if (status != EFI_SUCCESS) { | |
67 | efi_printk(sys_table, "Failed to open file: "); | |
68 | efi_char16_printk(sys_table, filename_16); | |
69 | efi_printk(sys_table, "\n"); | |
70 | return status; | |
71 | } | |
72 | ||
73 | *handle = h; | |
74 | ||
75 | info_sz = 0; | |
76 | status = efi_early->call((unsigned long)h->get_info, h, &info_guid, | |
77 | &info_sz, NULL); | |
78 | if (status != EFI_BUFFER_TOO_SMALL) { | |
79 | efi_printk(sys_table, "Failed to get file info size\n"); | |
80 | return status; | |
81 | } | |
82 | ||
83 | grow: | |
204b0a1a MF |
84 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
85 | info_sz, (void **)&info); | |
c116e8d6 MF |
86 | if (status != EFI_SUCCESS) { |
87 | efi_printk(sys_table, "Failed to alloc mem for file info\n"); | |
88 | return status; | |
89 | } | |
90 | ||
91 | status = efi_early->call((unsigned long)h->get_info, h, &info_guid, | |
92 | &info_sz, info); | |
93 | if (status == EFI_BUFFER_TOO_SMALL) { | |
204b0a1a | 94 | efi_call_early(free_pool, info); |
c116e8d6 MF |
95 | goto grow; |
96 | } | |
97 | ||
98 | *file_sz = info->file_size; | |
204b0a1a | 99 | efi_call_early(free_pool, info); |
c116e8d6 MF |
100 | |
101 | if (status != EFI_SUCCESS) | |
102 | efi_printk(sys_table, "Failed to get initrd info\n"); | |
103 | ||
104 | return status; | |
105 | } | |
106 | ||
107 | static efi_status_t | |
108 | __file_size64(void *__fh, efi_char16_t *filename_16, | |
109 | void **handle, u64 *file_sz) | |
54b52d87 | 110 | { |
c116e8d6 | 111 | efi_file_handle_64_t *h, *fh = __fh; |
54b52d87 MF |
112 | efi_file_info_t *info; |
113 | efi_status_t status; | |
114 | efi_guid_t info_guid = EFI_FILE_INFO_ID; | |
396f1a08 | 115 | u64 info_sz; |
54b52d87 MF |
116 | |
117 | status = efi_early->call((unsigned long)fh->open, fh, &h, filename_16, | |
118 | EFI_FILE_MODE_READ, (u64)0); | |
119 | if (status != EFI_SUCCESS) { | |
120 | efi_printk(sys_table, "Failed to open file: "); | |
121 | efi_char16_printk(sys_table, filename_16); | |
122 | efi_printk(sys_table, "\n"); | |
123 | return status; | |
124 | } | |
125 | ||
126 | *handle = h; | |
127 | ||
128 | info_sz = 0; | |
129 | status = efi_early->call((unsigned long)h->get_info, h, &info_guid, | |
130 | &info_sz, NULL); | |
131 | if (status != EFI_BUFFER_TOO_SMALL) { | |
132 | efi_printk(sys_table, "Failed to get file info size\n"); | |
133 | return status; | |
134 | } | |
135 | ||
136 | grow: | |
204b0a1a MF |
137 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
138 | info_sz, (void **)&info); | |
54b52d87 MF |
139 | if (status != EFI_SUCCESS) { |
140 | efi_printk(sys_table, "Failed to alloc mem for file info\n"); | |
141 | return status; | |
142 | } | |
143 | ||
144 | status = efi_early->call((unsigned long)h->get_info, h, &info_guid, | |
145 | &info_sz, info); | |
146 | if (status == EFI_BUFFER_TOO_SMALL) { | |
204b0a1a | 147 | efi_call_early(free_pool, info); |
54b52d87 MF |
148 | goto grow; |
149 | } | |
150 | ||
151 | *file_sz = info->file_size; | |
204b0a1a | 152 | efi_call_early(free_pool, info); |
54b52d87 MF |
153 | |
154 | if (status != EFI_SUCCESS) | |
155 | efi_printk(sys_table, "Failed to get initrd info\n"); | |
156 | ||
157 | return status; | |
158 | } | |
bd669475 | 159 | efi_status_t |
c116e8d6 MF |
160 | efi_file_size(efi_system_table_t *sys_table, void *__fh, |
161 | efi_char16_t *filename_16, void **handle, u64 *file_sz) | |
162 | { | |
163 | if (efi_early->is64) | |
164 | return __file_size64(__fh, filename_16, handle, file_sz); | |
165 | ||
166 | return __file_size32(__fh, filename_16, handle, file_sz); | |
167 | } | |
54b52d87 | 168 | |
bd669475 | 169 | efi_status_t |
47514c99 | 170 | efi_file_read(void *handle, unsigned long *size, void *addr) |
54b52d87 | 171 | { |
c116e8d6 MF |
172 | unsigned long func; |
173 | ||
174 | if (efi_early->is64) { | |
47514c99 | 175 | efi_file_handle_64_t *fh = handle; |
c116e8d6 MF |
176 | |
177 | func = (unsigned long)fh->read; | |
178 | return efi_early->call(func, handle, size, addr); | |
179 | } else { | |
47514c99 | 180 | efi_file_handle_32_t *fh = handle; |
c116e8d6 MF |
181 | |
182 | func = (unsigned long)fh->read; | |
183 | return efi_early->call(func, handle, size, addr); | |
184 | } | |
54b52d87 MF |
185 | } |
186 | ||
bd669475 | 187 | efi_status_t efi_file_close(void *handle) |
54b52d87 | 188 | { |
c116e8d6 | 189 | if (efi_early->is64) { |
47514c99 | 190 | efi_file_handle_64_t *fh = handle; |
c116e8d6 MF |
191 | |
192 | return efi_early->call((unsigned long)fh->close, handle); | |
193 | } else { | |
47514c99 | 194 | efi_file_handle_32_t *fh = handle; |
c116e8d6 MF |
195 | |
196 | return efi_early->call((unsigned long)fh->close, handle); | |
197 | } | |
198 | } | |
199 | ||
200 | static inline efi_status_t __open_volume32(void *__image, void **__fh) | |
201 | { | |
202 | efi_file_io_interface_t *io; | |
203 | efi_loaded_image_32_t *image = __image; | |
204 | efi_file_handle_32_t *fh; | |
205 | efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID; | |
206 | efi_status_t status; | |
207 | void *handle = (void *)(unsigned long)image->device_handle; | |
208 | unsigned long func; | |
209 | ||
204b0a1a MF |
210 | status = efi_call_early(handle_protocol, handle, |
211 | &fs_proto, (void **)&io); | |
c116e8d6 MF |
212 | if (status != EFI_SUCCESS) { |
213 | efi_printk(sys_table, "Failed to handle fs_proto\n"); | |
214 | return status; | |
215 | } | |
216 | ||
217 | func = (unsigned long)io->open_volume; | |
218 | status = efi_early->call(func, io, &fh); | |
219 | if (status != EFI_SUCCESS) | |
220 | efi_printk(sys_table, "Failed to open volume\n"); | |
291f3632 | 221 | |
c116e8d6 MF |
222 | *__fh = fh; |
223 | return status; | |
54b52d87 MF |
224 | } |
225 | ||
c116e8d6 | 226 | static inline efi_status_t __open_volume64(void *__image, void **__fh) |
54b52d87 MF |
227 | { |
228 | efi_file_io_interface_t *io; | |
c116e8d6 MF |
229 | efi_loaded_image_64_t *image = __image; |
230 | efi_file_handle_64_t *fh; | |
54b52d87 MF |
231 | efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID; |
232 | efi_status_t status; | |
233 | void *handle = (void *)(unsigned long)image->device_handle; | |
c116e8d6 | 234 | unsigned long func; |
54b52d87 | 235 | |
204b0a1a MF |
236 | status = efi_call_early(handle_protocol, handle, |
237 | &fs_proto, (void **)&io); | |
54b52d87 MF |
238 | if (status != EFI_SUCCESS) { |
239 | efi_printk(sys_table, "Failed to handle fs_proto\n"); | |
240 | return status; | |
241 | } | |
291f3632 | 242 | |
54b52d87 MF |
243 | func = (unsigned long)io->open_volume; |
244 | status = efi_early->call(func, io, &fh); | |
245 | if (status != EFI_SUCCESS) | |
246 | efi_printk(sys_table, "Failed to open volume\n"); | |
247 | ||
248 | *__fh = fh; | |
249 | return status; | |
250 | } | |
251 | ||
bd669475 | 252 | efi_status_t |
c116e8d6 MF |
253 | efi_open_volume(efi_system_table_t *sys_table, void *__image, void **__fh) |
254 | { | |
255 | if (efi_early->is64) | |
256 | return __open_volume64(__image, __fh); | |
257 | ||
258 | return __open_volume32(__image, __fh); | |
259 | } | |
260 | ||
bd669475 | 261 | void efi_char16_printk(efi_system_table_t *table, efi_char16_t *str) |
54b52d87 | 262 | { |
54b52d87 MF |
263 | unsigned long output_string; |
264 | size_t offset; | |
54b52d87 | 265 | |
c116e8d6 MF |
266 | if (efi_early->is64) { |
267 | struct efi_simple_text_output_protocol_64 *out; | |
268 | u64 *func; | |
54b52d87 | 269 | |
c116e8d6 MF |
270 | offset = offsetof(typeof(*out), output_string); |
271 | output_string = efi_early->text_output + offset; | |
115c6628 | 272 | out = (typeof(out))(unsigned long)efi_early->text_output; |
c116e8d6 MF |
273 | func = (u64 *)output_string; |
274 | ||
115c6628 | 275 | efi_early->call(*func, out, str); |
c116e8d6 MF |
276 | } else { |
277 | struct efi_simple_text_output_protocol_32 *out; | |
278 | u32 *func; | |
279 | ||
280 | offset = offsetof(typeof(*out), output_string); | |
281 | output_string = efi_early->text_output + offset; | |
115c6628 | 282 | out = (typeof(out))(unsigned long)efi_early->text_output; |
c116e8d6 MF |
283 | func = (u32 *)output_string; |
284 | ||
115c6628 | 285 | efi_early->call(*func, out, str); |
c116e8d6 | 286 | } |
54b52d87 MF |
287 | } |
288 | ||
291f3632 MF |
289 | static void find_bits(unsigned long mask, u8 *pos, u8 *size) |
290 | { | |
291 | u8 first, len; | |
292 | ||
293 | first = 0; | |
294 | len = 0; | |
295 | ||
296 | if (mask) { | |
297 | while (!(mask & 0x1)) { | |
298 | mask = mask >> 1; | |
299 | first++; | |
300 | } | |
301 | ||
302 | while (mask & 0x1) { | |
303 | mask = mask >> 1; | |
304 | len++; | |
305 | } | |
306 | } | |
307 | ||
308 | *pos = first; | |
309 | *size = len; | |
310 | } | |
311 | ||
c116e8d6 MF |
312 | static efi_status_t |
313 | __setup_efi_pci32(efi_pci_io_protocol_32 *pci, struct pci_setup_rom **__rom) | |
dd5fc854 | 314 | { |
c116e8d6 | 315 | struct pci_setup_rom *rom = NULL; |
dd5fc854 | 316 | efi_status_t status; |
c116e8d6 MF |
317 | unsigned long size; |
318 | uint64_t attributes; | |
dd5fc854 | 319 | |
c116e8d6 MF |
320 | status = efi_early->call(pci->attributes, pci, |
321 | EfiPciIoAttributeOperationGet, 0, 0, | |
322 | &attributes); | |
323 | if (status != EFI_SUCCESS) | |
324 | return status; | |
dd5fc854 | 325 | |
c116e8d6 MF |
326 | if (!pci->romimage || !pci->romsize) |
327 | return EFI_INVALID_PARAMETER; | |
dd5fc854 | 328 | |
c116e8d6 | 329 | size = pci->romsize + sizeof(*rom); |
dd5fc854 | 330 | |
204b0a1a | 331 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, &rom); |
77e21e87 AM |
332 | if (status != EFI_SUCCESS) { |
333 | efi_printk(sys_table, "Failed to alloc mem for rom\n"); | |
c116e8d6 | 334 | return status; |
77e21e87 | 335 | } |
dd5fc854 | 336 | |
c116e8d6 MF |
337 | memset(rom, 0, sizeof(*rom)); |
338 | ||
339 | rom->data.type = SETUP_PCI; | |
340 | rom->data.len = size - sizeof(struct setup_data); | |
341 | rom->data.next = 0; | |
342 | rom->pcilen = pci->romsize; | |
343 | *__rom = rom; | |
344 | ||
345 | status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, | |
346 | PCI_VENDOR_ID, 1, &(rom->vendor)); | |
dd5fc854 | 347 | |
77e21e87 AM |
348 | if (status != EFI_SUCCESS) { |
349 | efi_printk(sys_table, "Failed to read rom->vendor\n"); | |
c116e8d6 | 350 | goto free_struct; |
77e21e87 | 351 | } |
c116e8d6 MF |
352 | |
353 | status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, | |
354 | PCI_DEVICE_ID, 1, &(rom->devid)); | |
355 | ||
77e21e87 AM |
356 | if (status != EFI_SUCCESS) { |
357 | efi_printk(sys_table, "Failed to read rom->devid\n"); | |
c116e8d6 | 358 | goto free_struct; |
77e21e87 | 359 | } |
c116e8d6 MF |
360 | |
361 | status = efi_early->call(pci->get_location, pci, &(rom->segment), | |
362 | &(rom->bus), &(rom->device), &(rom->function)); | |
363 | ||
364 | if (status != EFI_SUCCESS) | |
365 | goto free_struct; | |
366 | ||
367 | memcpy(rom->romdata, pci->romimage, pci->romsize); | |
368 | return status; | |
369 | ||
370 | free_struct: | |
204b0a1a | 371 | efi_call_early(free_pool, rom); |
c116e8d6 MF |
372 | return status; |
373 | } | |
374 | ||
56394ab8 | 375 | static void |
c116e8d6 MF |
376 | setup_efi_pci32(struct boot_params *params, void **pci_handle, |
377 | unsigned long size) | |
378 | { | |
379 | efi_pci_io_protocol_32 *pci = NULL; | |
380 | efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
381 | u32 *handles = (u32 *)(unsigned long)pci_handle; | |
382 | efi_status_t status; | |
383 | unsigned long nr_pci; | |
384 | struct setup_data *data; | |
385 | int i; | |
386 | ||
387 | data = (struct setup_data *)(unsigned long)params->hdr.setup_data; | |
388 | ||
389 | while (data && data->next) | |
390 | data = (struct setup_data *)(unsigned long)data->next; | |
dd5fc854 | 391 | |
c116e8d6 | 392 | nr_pci = size / sizeof(u32); |
dd5fc854 | 393 | for (i = 0; i < nr_pci; i++) { |
c116e8d6 MF |
394 | struct pci_setup_rom *rom = NULL; |
395 | u32 h = handles[i]; | |
dd5fc854 | 396 | |
204b0a1a MF |
397 | status = efi_call_early(handle_protocol, h, |
398 | &pci_proto, (void **)&pci); | |
dd5fc854 MG |
399 | |
400 | if (status != EFI_SUCCESS) | |
401 | continue; | |
402 | ||
403 | if (!pci) | |
404 | continue; | |
405 | ||
c116e8d6 | 406 | status = __setup_efi_pci32(pci, &rom); |
dd5fc854 MG |
407 | if (status != EFI_SUCCESS) |
408 | continue; | |
409 | ||
c116e8d6 MF |
410 | if (data) |
411 | data->next = (unsigned long)rom; | |
412 | else | |
413 | params->hdr.setup_data = (unsigned long)rom; | |
414 | ||
415 | data = (struct setup_data *)rom; | |
dd5fc854 | 416 | |
c116e8d6 | 417 | } |
c116e8d6 | 418 | } |
dd5fc854 | 419 | |
c116e8d6 MF |
420 | static efi_status_t |
421 | __setup_efi_pci64(efi_pci_io_protocol_64 *pci, struct pci_setup_rom **__rom) | |
422 | { | |
423 | struct pci_setup_rom *rom; | |
424 | efi_status_t status; | |
425 | unsigned long size; | |
426 | uint64_t attributes; | |
dd5fc854 | 427 | |
c116e8d6 MF |
428 | status = efi_early->call(pci->attributes, pci, |
429 | EfiPciIoAttributeOperationGet, 0, | |
430 | &attributes); | |
431 | if (status != EFI_SUCCESS) | |
432 | return status; | |
dd5fc854 | 433 | |
c116e8d6 MF |
434 | if (!pci->romimage || !pci->romsize) |
435 | return EFI_INVALID_PARAMETER; | |
dd5fc854 | 436 | |
c116e8d6 | 437 | size = pci->romsize + sizeof(*rom); |
dd5fc854 | 438 | |
204b0a1a | 439 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, &rom); |
77e21e87 AM |
440 | if (status != EFI_SUCCESS) { |
441 | efi_printk(sys_table, "Failed to alloc mem for rom\n"); | |
c116e8d6 | 442 | return status; |
77e21e87 | 443 | } |
c116e8d6 MF |
444 | |
445 | rom->data.type = SETUP_PCI; | |
446 | rom->data.len = size - sizeof(struct setup_data); | |
447 | rom->data.next = 0; | |
448 | rom->pcilen = pci->romsize; | |
449 | *__rom = rom; | |
450 | ||
451 | status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, | |
452 | PCI_VENDOR_ID, 1, &(rom->vendor)); | |
453 | ||
77e21e87 AM |
454 | if (status != EFI_SUCCESS) { |
455 | efi_printk(sys_table, "Failed to read rom->vendor\n"); | |
c116e8d6 | 456 | goto free_struct; |
77e21e87 | 457 | } |
c116e8d6 MF |
458 | |
459 | status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, | |
460 | PCI_DEVICE_ID, 1, &(rom->devid)); | |
461 | ||
77e21e87 AM |
462 | if (status != EFI_SUCCESS) { |
463 | efi_printk(sys_table, "Failed to read rom->devid\n"); | |
c116e8d6 | 464 | goto free_struct; |
77e21e87 | 465 | } |
c116e8d6 MF |
466 | |
467 | status = efi_early->call(pci->get_location, pci, &(rom->segment), | |
468 | &(rom->bus), &(rom->device), &(rom->function)); | |
469 | ||
470 | if (status != EFI_SUCCESS) | |
471 | goto free_struct; | |
472 | ||
473 | memcpy(rom->romdata, pci->romimage, pci->romsize); | |
474 | return status; | |
475 | ||
476 | free_struct: | |
204b0a1a | 477 | efi_call_early(free_pool, rom); |
c116e8d6 MF |
478 | return status; |
479 | ||
480 | } | |
481 | ||
56394ab8 | 482 | static void |
c116e8d6 MF |
483 | setup_efi_pci64(struct boot_params *params, void **pci_handle, |
484 | unsigned long size) | |
485 | { | |
486 | efi_pci_io_protocol_64 *pci = NULL; | |
487 | efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
488 | u64 *handles = (u64 *)(unsigned long)pci_handle; | |
489 | efi_status_t status; | |
490 | unsigned long nr_pci; | |
491 | struct setup_data *data; | |
492 | int i; | |
dd5fc854 | 493 | |
c116e8d6 MF |
494 | data = (struct setup_data *)(unsigned long)params->hdr.setup_data; |
495 | ||
496 | while (data && data->next) | |
497 | data = (struct setup_data *)(unsigned long)data->next; | |
498 | ||
499 | nr_pci = size / sizeof(u64); | |
500 | for (i = 0; i < nr_pci; i++) { | |
501 | struct pci_setup_rom *rom = NULL; | |
502 | u64 h = handles[i]; | |
503 | ||
204b0a1a MF |
504 | status = efi_call_early(handle_protocol, h, |
505 | &pci_proto, (void **)&pci); | |
dd5fc854 MG |
506 | |
507 | if (status != EFI_SUCCESS) | |
c116e8d6 MF |
508 | continue; |
509 | ||
510 | if (!pci) | |
511 | continue; | |
dd5fc854 | 512 | |
c116e8d6 MF |
513 | status = __setup_efi_pci64(pci, &rom); |
514 | if (status != EFI_SUCCESS) | |
515 | continue; | |
dd5fc854 MG |
516 | |
517 | if (data) | |
bc754790 | 518 | data->next = (unsigned long)rom; |
dd5fc854 | 519 | else |
bc754790 | 520 | params->hdr.setup_data = (unsigned long)rom; |
dd5fc854 MG |
521 | |
522 | data = (struct setup_data *)rom; | |
523 | ||
dd5fc854 | 524 | } |
dd5fc854 MG |
525 | } |
526 | ||
56394ab8 MF |
527 | /* |
528 | * There's no way to return an informative status from this function, | |
529 | * because any analysis (and printing of error messages) needs to be | |
530 | * done directly at the EFI function call-site. | |
531 | * | |
532 | * For example, EFI_INVALID_PARAMETER could indicate a bug or maybe we | |
533 | * just didn't find any PCI devices, but there's no way to tell outside | |
534 | * the context of the call. | |
535 | */ | |
536 | static void setup_efi_pci(struct boot_params *params) | |
291f3632 | 537 | { |
291f3632 | 538 | efi_status_t status; |
c116e8d6 MF |
539 | void **pci_handle = NULL; |
540 | efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
541 | unsigned long size = 0; | |
291f3632 | 542 | |
204b0a1a MF |
543 | status = efi_call_early(locate_handle, |
544 | EFI_LOCATE_BY_PROTOCOL, | |
545 | &pci_proto, NULL, &size, pci_handle); | |
291f3632 | 546 | |
c116e8d6 | 547 | if (status == EFI_BUFFER_TOO_SMALL) { |
204b0a1a MF |
548 | status = efi_call_early(allocate_pool, |
549 | EFI_LOADER_DATA, | |
550 | size, (void **)&pci_handle); | |
291f3632 | 551 | |
77e21e87 AM |
552 | if (status != EFI_SUCCESS) { |
553 | efi_printk(sys_table, "Failed to alloc mem for pci_handle\n"); | |
56394ab8 | 554 | return; |
77e21e87 | 555 | } |
291f3632 | 556 | |
204b0a1a MF |
557 | status = efi_call_early(locate_handle, |
558 | EFI_LOCATE_BY_PROTOCOL, &pci_proto, | |
559 | NULL, &size, pci_handle); | |
291f3632 MF |
560 | } |
561 | ||
c116e8d6 | 562 | if (status != EFI_SUCCESS) |
291f3632 MF |
563 | goto free_handle; |
564 | ||
c116e8d6 | 565 | if (efi_early->is64) |
56394ab8 | 566 | setup_efi_pci64(params, pci_handle, size); |
c116e8d6 | 567 | else |
56394ab8 | 568 | setup_efi_pci32(params, pci_handle, size); |
291f3632 | 569 | |
c116e8d6 | 570 | free_handle: |
204b0a1a | 571 | efi_call_early(free_pool, pci_handle); |
c116e8d6 | 572 | } |
291f3632 | 573 | |
c116e8d6 MF |
574 | static efi_status_t |
575 | setup_uga32(void **uga_handle, unsigned long size, u32 *width, u32 *height) | |
576 | { | |
577 | struct efi_uga_draw_protocol *uga = NULL, *first_uga; | |
578 | efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; | |
579 | unsigned long nr_ugas; | |
580 | u32 *handles = (u32 *)uga_handle;; | |
581 | efi_status_t status; | |
582 | int i; | |
583 | ||
291f3632 | 584 | first_uga = NULL; |
c116e8d6 MF |
585 | nr_ugas = size / sizeof(u32); |
586 | for (i = 0; i < nr_ugas; i++) { | |
587 | efi_guid_t pciio_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
588 | u32 w, h, depth, refresh; | |
589 | void *pciio; | |
590 | u32 handle = handles[i]; | |
591 | ||
204b0a1a MF |
592 | status = efi_call_early(handle_protocol, handle, |
593 | &uga_proto, (void **)&uga); | |
c116e8d6 MF |
594 | if (status != EFI_SUCCESS) |
595 | continue; | |
596 | ||
204b0a1a | 597 | efi_call_early(handle_protocol, handle, &pciio_proto, &pciio); |
c116e8d6 MF |
598 | |
599 | status = efi_early->call((unsigned long)uga->get_mode, uga, | |
600 | &w, &h, &depth, &refresh); | |
601 | if (status == EFI_SUCCESS && (!first_uga || pciio)) { | |
602 | *width = w; | |
603 | *height = h; | |
604 | ||
605 | /* | |
606 | * Once we've found a UGA supporting PCIIO, | |
607 | * don't bother looking any further. | |
608 | */ | |
609 | if (pciio) | |
610 | break; | |
611 | ||
612 | first_uga = uga; | |
613 | } | |
614 | } | |
615 | ||
616 | return status; | |
617 | } | |
291f3632 | 618 | |
c116e8d6 MF |
619 | static efi_status_t |
620 | setup_uga64(void **uga_handle, unsigned long size, u32 *width, u32 *height) | |
621 | { | |
622 | struct efi_uga_draw_protocol *uga = NULL, *first_uga; | |
623 | efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; | |
624 | unsigned long nr_ugas; | |
625 | u64 *handles = (u64 *)uga_handle;; | |
626 | efi_status_t status; | |
627 | int i; | |
628 | ||
629 | first_uga = NULL; | |
630 | nr_ugas = size / sizeof(u64); | |
291f3632 MF |
631 | for (i = 0; i < nr_ugas; i++) { |
632 | efi_guid_t pciio_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
291f3632 MF |
633 | u32 w, h, depth, refresh; |
634 | void *pciio; | |
c116e8d6 | 635 | u64 handle = handles[i]; |
291f3632 | 636 | |
204b0a1a MF |
637 | status = efi_call_early(handle_protocol, handle, |
638 | &uga_proto, (void **)&uga); | |
291f3632 MF |
639 | if (status != EFI_SUCCESS) |
640 | continue; | |
641 | ||
204b0a1a | 642 | efi_call_early(handle_protocol, handle, &pciio_proto, &pciio); |
291f3632 | 643 | |
54b52d87 MF |
644 | status = efi_early->call((unsigned long)uga->get_mode, uga, |
645 | &w, &h, &depth, &refresh); | |
291f3632 | 646 | if (status == EFI_SUCCESS && (!first_uga || pciio)) { |
c116e8d6 MF |
647 | *width = w; |
648 | *height = h; | |
291f3632 MF |
649 | |
650 | /* | |
651 | * Once we've found a UGA supporting PCIIO, | |
652 | * don't bother looking any further. | |
653 | */ | |
654 | if (pciio) | |
655 | break; | |
656 | ||
657 | first_uga = uga; | |
658 | } | |
659 | } | |
660 | ||
c116e8d6 MF |
661 | return status; |
662 | } | |
663 | ||
664 | /* | |
665 | * See if we have Universal Graphics Adapter (UGA) protocol | |
666 | */ | |
667 | static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto, | |
668 | unsigned long size) | |
669 | { | |
670 | efi_status_t status; | |
671 | u32 width, height; | |
672 | void **uga_handle = NULL; | |
673 | ||
204b0a1a MF |
674 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
675 | size, (void **)&uga_handle); | |
c116e8d6 MF |
676 | if (status != EFI_SUCCESS) |
677 | return status; | |
678 | ||
204b0a1a MF |
679 | status = efi_call_early(locate_handle, |
680 | EFI_LOCATE_BY_PROTOCOL, | |
681 | uga_proto, NULL, &size, uga_handle); | |
c116e8d6 MF |
682 | if (status != EFI_SUCCESS) |
683 | goto free_handle; | |
684 | ||
685 | height = 0; | |
686 | width = 0; | |
687 | ||
688 | if (efi_early->is64) | |
689 | status = setup_uga64(uga_handle, size, &width, &height); | |
690 | else | |
691 | status = setup_uga32(uga_handle, size, &width, &height); | |
692 | ||
693 | if (!width && !height) | |
291f3632 MF |
694 | goto free_handle; |
695 | ||
696 | /* EFI framebuffer */ | |
697 | si->orig_video_isVGA = VIDEO_TYPE_EFI; | |
698 | ||
699 | si->lfb_depth = 32; | |
700 | si->lfb_width = width; | |
701 | si->lfb_height = height; | |
702 | ||
703 | si->red_size = 8; | |
704 | si->red_pos = 16; | |
705 | si->green_size = 8; | |
706 | si->green_pos = 8; | |
707 | si->blue_size = 8; | |
708 | si->blue_pos = 0; | |
709 | si->rsvd_size = 8; | |
710 | si->rsvd_pos = 24; | |
711 | ||
291f3632 | 712 | free_handle: |
204b0a1a | 713 | efi_call_early(free_pool, uga_handle); |
291f3632 MF |
714 | return status; |
715 | } | |
716 | ||
717 | void setup_graphics(struct boot_params *boot_params) | |
718 | { | |
719 | efi_guid_t graphics_proto = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; | |
720 | struct screen_info *si; | |
721 | efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; | |
722 | efi_status_t status; | |
723 | unsigned long size; | |
724 | void **gop_handle = NULL; | |
725 | void **uga_handle = NULL; | |
726 | ||
727 | si = &boot_params->screen_info; | |
728 | memset(si, 0, sizeof(*si)); | |
729 | ||
730 | size = 0; | |
204b0a1a MF |
731 | status = efi_call_early(locate_handle, |
732 | EFI_LOCATE_BY_PROTOCOL, | |
733 | &graphics_proto, NULL, &size, gop_handle); | |
291f3632 | 734 | if (status == EFI_BUFFER_TOO_SMALL) |
2c23b73c | 735 | status = efi_setup_gop(NULL, si, &graphics_proto, size); |
291f3632 MF |
736 | |
737 | if (status != EFI_SUCCESS) { | |
738 | size = 0; | |
204b0a1a MF |
739 | status = efi_call_early(locate_handle, |
740 | EFI_LOCATE_BY_PROTOCOL, | |
741 | &uga_proto, NULL, &size, uga_handle); | |
291f3632 MF |
742 | if (status == EFI_BUFFER_TOO_SMALL) |
743 | setup_uga(si, &uga_proto, size); | |
744 | } | |
745 | } | |
746 | ||
291f3632 MF |
747 | /* |
748 | * Because the x86 boot code expects to be passed a boot_params we | |
749 | * need to create one ourselves (usually the bootloader would create | |
750 | * one for us). | |
7e8213c1 MF |
751 | * |
752 | * The caller is responsible for filling out ->code32_start in the | |
753 | * returned boot_params. | |
291f3632 | 754 | */ |
54b52d87 | 755 | struct boot_params *make_boot_params(struct efi_config *c) |
291f3632 | 756 | { |
9ca8f72a | 757 | struct boot_params *boot_params; |
9ca8f72a MF |
758 | struct apm_bios_info *bi; |
759 | struct setup_header *hdr; | |
9ca8f72a | 760 | efi_loaded_image_t *image; |
54b52d87 | 761 | void *options, *handle; |
9ca8f72a | 762 | efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID; |
291f3632 MF |
763 | int options_size = 0; |
764 | efi_status_t status; | |
5fef3870 | 765 | char *cmdline_ptr; |
291f3632 MF |
766 | u16 *s2; |
767 | u8 *s1; | |
768 | int i; | |
46f4582e RF |
769 | unsigned long ramdisk_addr; |
770 | unsigned long ramdisk_size; | |
291f3632 | 771 | |
54b52d87 MF |
772 | efi_early = c; |
773 | sys_table = (efi_system_table_t *)(unsigned long)efi_early->table; | |
774 | handle = (void *)(unsigned long)efi_early->image_handle; | |
9ca8f72a MF |
775 | |
776 | /* Check if we were booted by the EFI firmware */ | |
777 | if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) | |
778 | return NULL; | |
779 | ||
54b52d87 MF |
780 | if (efi_early->is64) |
781 | setup_boot_services64(efi_early); | |
782 | else | |
783 | setup_boot_services32(efi_early); | |
784 | ||
204b0a1a MF |
785 | status = efi_call_early(handle_protocol, handle, |
786 | &proto, (void *)&image); | |
9ca8f72a | 787 | if (status != EFI_SUCCESS) { |
876dc36a | 788 | efi_printk(sys_table, "Failed to get handle for LOADED_IMAGE_PROTOCOL\n"); |
9ca8f72a MF |
789 | return NULL; |
790 | } | |
791 | ||
40e4530a RF |
792 | status = efi_low_alloc(sys_table, 0x4000, 1, |
793 | (unsigned long *)&boot_params); | |
9ca8f72a | 794 | if (status != EFI_SUCCESS) { |
876dc36a | 795 | efi_printk(sys_table, "Failed to alloc lowmem for boot params\n"); |
9ca8f72a MF |
796 | return NULL; |
797 | } | |
798 | ||
799 | memset(boot_params, 0x0, 0x4000); | |
800 | ||
801 | hdr = &boot_params->hdr; | |
9ca8f72a | 802 | bi = &boot_params->apm_bios_info; |
9ca8f72a MF |
803 | |
804 | /* Copy the second sector to boot_params */ | |
805 | memcpy(&hdr->jump, image->image_base + 512, 512); | |
806 | ||
807 | /* | |
808 | * Fill out some of the header fields ourselves because the | |
809 | * EFI firmware loader doesn't load the first sector. | |
810 | */ | |
811 | hdr->root_flags = 1; | |
812 | hdr->vid_mode = 0xffff; | |
813 | hdr->boot_flag = 0xAA55; | |
814 | ||
291f3632 MF |
815 | hdr->type_of_loader = 0x21; |
816 | ||
817 | /* Convert unicode cmdline to ascii */ | |
c625d1c2 | 818 | cmdline_ptr = efi_convert_cmdline(sys_table, image, &options_size); |
5fef3870 RF |
819 | if (!cmdline_ptr) |
820 | goto fail; | |
821 | hdr->cmd_line_ptr = (unsigned long)cmdline_ptr; | |
98b228f5 RF |
822 | /* Fill in upper bits of command line address, NOP on 32 bit */ |
823 | boot_params->ext_cmd_line_ptr = (u64)(unsigned long)cmdline_ptr >> 32; | |
291f3632 MF |
824 | |
825 | hdr->ramdisk_image = 0; | |
826 | hdr->ramdisk_size = 0; | |
827 | ||
291f3632 MF |
828 | /* Clear APM BIOS info */ |
829 | memset(bi, 0, sizeof(*bi)); | |
830 | ||
5a17dae4 MF |
831 | status = efi_parse_options(cmdline_ptr); |
832 | if (status != EFI_SUCCESS) | |
833 | goto fail2; | |
834 | ||
46f4582e RF |
835 | status = handle_cmdline_files(sys_table, image, |
836 | (char *)(unsigned long)hdr->cmd_line_ptr, | |
47226ad4 | 837 | "initrd=", hdr->initrd_addr_max, |
46f4582e | 838 | &ramdisk_addr, &ramdisk_size); |
47226ad4 YL |
839 | |
840 | if (status != EFI_SUCCESS && | |
841 | hdr->xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G) { | |
842 | efi_printk(sys_table, "Trying to load files to higher address\n"); | |
843 | status = handle_cmdline_files(sys_table, image, | |
844 | (char *)(unsigned long)hdr->cmd_line_ptr, | |
845 | "initrd=", -1UL, | |
846 | &ramdisk_addr, &ramdisk_size); | |
847 | } | |
848 | ||
9ca8f72a MF |
849 | if (status != EFI_SUCCESS) |
850 | goto fail2; | |
4bf7111f YL |
851 | hdr->ramdisk_image = ramdisk_addr & 0xffffffff; |
852 | hdr->ramdisk_size = ramdisk_size & 0xffffffff; | |
853 | boot_params->ext_ramdisk_image = (u64)ramdisk_addr >> 32; | |
854 | boot_params->ext_ramdisk_size = (u64)ramdisk_size >> 32; | |
9ca8f72a MF |
855 | |
856 | return boot_params; | |
857 | fail2: | |
0e1cadb0 | 858 | efi_free(sys_table, options_size, hdr->cmd_line_ptr); |
9ca8f72a | 859 | fail: |
40e4530a | 860 | efi_free(sys_table, 0x4000, (unsigned long)boot_params); |
9ca8f72a MF |
861 | return NULL; |
862 | } | |
863 | ||
d2078d5a LC |
864 | static void add_e820ext(struct boot_params *params, |
865 | struct setup_data *e820ext, u32 nr_entries) | |
9ca8f72a | 866 | { |
d2078d5a | 867 | struct setup_data *data; |
9ca8f72a | 868 | efi_status_t status; |
d2078d5a | 869 | unsigned long size; |
291f3632 | 870 | |
d2078d5a LC |
871 | e820ext->type = SETUP_E820_EXT; |
872 | e820ext->len = nr_entries * sizeof(struct e820entry); | |
873 | e820ext->next = 0; | |
291f3632 | 874 | |
d2078d5a | 875 | data = (struct setup_data *)(unsigned long)params->hdr.setup_data; |
291f3632 | 876 | |
d2078d5a LC |
877 | while (data && data->next) |
878 | data = (struct setup_data *)(unsigned long)data->next; | |
d3768d88 | 879 | |
d2078d5a LC |
880 | if (data) |
881 | data->next = (unsigned long)e820ext; | |
882 | else | |
883 | params->hdr.setup_data = (unsigned long)e820ext; | |
884 | } | |
291f3632 | 885 | |
d2078d5a LC |
886 | static efi_status_t setup_e820(struct boot_params *params, |
887 | struct setup_data *e820ext, u32 e820ext_size) | |
888 | { | |
889 | struct e820entry *e820_map = ¶ms->e820_map[0]; | |
890 | struct efi_info *efi = ¶ms->efi_info; | |
891 | struct e820entry *prev = NULL; | |
892 | u32 nr_entries; | |
893 | u32 nr_desc; | |
894 | int i; | |
291f3632 | 895 | |
291f3632 | 896 | nr_entries = 0; |
d2078d5a LC |
897 | nr_desc = efi->efi_memmap_size / efi->efi_memdesc_size; |
898 | ||
899 | for (i = 0; i < nr_desc; i++) { | |
291f3632 MF |
900 | efi_memory_desc_t *d; |
901 | unsigned int e820_type = 0; | |
d2078d5a | 902 | unsigned long m = efi->efi_memmap; |
291f3632 | 903 | |
7cc03e48 DS |
904 | #ifdef CONFIG_X86_64 |
905 | m |= (u64)efi->efi_memmap_hi << 32; | |
906 | #endif | |
907 | ||
d2078d5a | 908 | d = (efi_memory_desc_t *)(m + (i * efi->efi_memdesc_size)); |
291f3632 MF |
909 | switch (d->type) { |
910 | case EFI_RESERVED_TYPE: | |
911 | case EFI_RUNTIME_SERVICES_CODE: | |
912 | case EFI_RUNTIME_SERVICES_DATA: | |
913 | case EFI_MEMORY_MAPPED_IO: | |
914 | case EFI_MEMORY_MAPPED_IO_PORT_SPACE: | |
915 | case EFI_PAL_CODE: | |
916 | e820_type = E820_RESERVED; | |
917 | break; | |
918 | ||
919 | case EFI_UNUSABLE_MEMORY: | |
920 | e820_type = E820_UNUSABLE; | |
921 | break; | |
922 | ||
923 | case EFI_ACPI_RECLAIM_MEMORY: | |
924 | e820_type = E820_ACPI; | |
925 | break; | |
926 | ||
927 | case EFI_LOADER_CODE: | |
928 | case EFI_LOADER_DATA: | |
929 | case EFI_BOOT_SERVICES_CODE: | |
930 | case EFI_BOOT_SERVICES_DATA: | |
931 | case EFI_CONVENTIONAL_MEMORY: | |
932 | e820_type = E820_RAM; | |
933 | break; | |
934 | ||
935 | case EFI_ACPI_MEMORY_NVS: | |
936 | e820_type = E820_NVS; | |
937 | break; | |
938 | ||
ad5fb870 DW |
939 | case EFI_PERSISTENT_MEMORY: |
940 | e820_type = E820_PMEM; | |
941 | break; | |
942 | ||
291f3632 MF |
943 | default: |
944 | continue; | |
945 | } | |
946 | ||
947 | /* Merge adjacent mappings */ | |
948 | if (prev && prev->type == e820_type && | |
d2078d5a | 949 | (prev->addr + prev->size) == d->phys_addr) { |
291f3632 | 950 | prev->size += d->num_pages << 12; |
d2078d5a | 951 | continue; |
291f3632 | 952 | } |
d2078d5a LC |
953 | |
954 | if (nr_entries == ARRAY_SIZE(params->e820_map)) { | |
955 | u32 need = (nr_desc - i) * sizeof(struct e820entry) + | |
956 | sizeof(struct setup_data); | |
957 | ||
958 | if (!e820ext || e820ext_size < need) | |
959 | return EFI_BUFFER_TOO_SMALL; | |
960 | ||
961 | /* boot_params map full, switch to e820 extended */ | |
962 | e820_map = (struct e820entry *)e820ext->data; | |
963 | } | |
964 | ||
965 | e820_map->addr = d->phys_addr; | |
966 | e820_map->size = d->num_pages << PAGE_SHIFT; | |
967 | e820_map->type = e820_type; | |
968 | prev = e820_map++; | |
969 | nr_entries++; | |
291f3632 MF |
970 | } |
971 | ||
d2078d5a LC |
972 | if (nr_entries > ARRAY_SIZE(params->e820_map)) { |
973 | u32 nr_e820ext = nr_entries - ARRAY_SIZE(params->e820_map); | |
974 | ||
975 | add_e820ext(params, e820ext, nr_e820ext); | |
976 | nr_entries -= nr_e820ext; | |
977 | } | |
978 | ||
979 | params->e820_entries = (u8)nr_entries; | |
980 | ||
981 | return EFI_SUCCESS; | |
982 | } | |
983 | ||
984 | static efi_status_t alloc_e820ext(u32 nr_desc, struct setup_data **e820ext, | |
985 | u32 *e820ext_size) | |
986 | { | |
987 | efi_status_t status; | |
988 | unsigned long size; | |
989 | ||
990 | size = sizeof(struct setup_data) + | |
991 | sizeof(struct e820entry) * nr_desc; | |
992 | ||
993 | if (*e820ext) { | |
204b0a1a | 994 | efi_call_early(free_pool, *e820ext); |
d2078d5a LC |
995 | *e820ext = NULL; |
996 | *e820ext_size = 0; | |
997 | } | |
998 | ||
204b0a1a MF |
999 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
1000 | size, (void **)e820ext); | |
d2078d5a LC |
1001 | if (status == EFI_SUCCESS) |
1002 | *e820ext_size = size; | |
1003 | ||
1004 | return status; | |
1005 | } | |
1006 | ||
1007 | static efi_status_t exit_boot(struct boot_params *boot_params, | |
b8ff87a6 | 1008 | void *handle, bool is64) |
d2078d5a LC |
1009 | { |
1010 | struct efi_info *efi = &boot_params->efi_info; | |
1011 | unsigned long map_sz, key, desc_size; | |
1012 | efi_memory_desc_t *mem_map; | |
1013 | struct setup_data *e820ext; | |
b8ff87a6 | 1014 | const char *signature; |
d2078d5a LC |
1015 | __u32 e820ext_size; |
1016 | __u32 nr_desc, prev_nr_desc; | |
1017 | efi_status_t status; | |
1018 | __u32 desc_version; | |
1019 | bool called_exit = false; | |
1020 | u8 nr_entries; | |
1021 | int i; | |
1022 | ||
1023 | nr_desc = 0; | |
1024 | e820ext = NULL; | |
1025 | e820ext_size = 0; | |
1026 | ||
1027 | get_map: | |
1028 | status = efi_get_memory_map(sys_table, &mem_map, &map_sz, &desc_size, | |
1029 | &desc_version, &key); | |
1030 | ||
1031 | if (status != EFI_SUCCESS) | |
1032 | return status; | |
1033 | ||
1034 | prev_nr_desc = nr_desc; | |
1035 | nr_desc = map_sz / desc_size; | |
1036 | if (nr_desc > prev_nr_desc && | |
1037 | nr_desc > ARRAY_SIZE(boot_params->e820_map)) { | |
1038 | u32 nr_e820ext = nr_desc - ARRAY_SIZE(boot_params->e820_map); | |
1039 | ||
1040 | status = alloc_e820ext(nr_e820ext, &e820ext, &e820ext_size); | |
1041 | if (status != EFI_SUCCESS) | |
1042 | goto free_mem_map; | |
1043 | ||
204b0a1a | 1044 | efi_call_early(free_pool, mem_map); |
d2078d5a LC |
1045 | goto get_map; /* Allocated memory, get map again */ |
1046 | } | |
1047 | ||
b8ff87a6 MF |
1048 | signature = is64 ? EFI64_LOADER_SIGNATURE : EFI32_LOADER_SIGNATURE; |
1049 | memcpy(&efi->efi_loader_signature, signature, sizeof(__u32)); | |
1050 | ||
d2078d5a LC |
1051 | efi->efi_systab = (unsigned long)sys_table; |
1052 | efi->efi_memdesc_size = desc_size; | |
1053 | efi->efi_memdesc_version = desc_version; | |
1054 | efi->efi_memmap = (unsigned long)mem_map; | |
1055 | efi->efi_memmap_size = map_sz; | |
1056 | ||
1057 | #ifdef CONFIG_X86_64 | |
1058 | efi->efi_systab_hi = (unsigned long)sys_table >> 32; | |
1059 | efi->efi_memmap_hi = (unsigned long)mem_map >> 32; | |
1060 | #endif | |
1061 | ||
1062 | /* Might as well exit boot services now */ | |
204b0a1a | 1063 | status = efi_call_early(exit_boot_services, handle, key); |
d2078d5a LC |
1064 | if (status != EFI_SUCCESS) { |
1065 | /* | |
1066 | * ExitBootServices() will fail if any of the event | |
1067 | * handlers change the memory map. In which case, we | |
1068 | * must be prepared to retry, but only once so that | |
1069 | * we're guaranteed to exit on repeated failures instead | |
1070 | * of spinning forever. | |
1071 | */ | |
1072 | if (called_exit) | |
1073 | goto free_mem_map; | |
1074 | ||
1075 | called_exit = true; | |
204b0a1a | 1076 | efi_call_early(free_pool, mem_map); |
d2078d5a LC |
1077 | goto get_map; |
1078 | } | |
1079 | ||
1080 | /* Historic? */ | |
1081 | boot_params->alt_mem_k = 32 * 1024; | |
1082 | ||
1083 | status = setup_e820(boot_params, e820ext, e820ext_size); | |
1084 | if (status != EFI_SUCCESS) | |
1085 | return status; | |
291f3632 MF |
1086 | |
1087 | return EFI_SUCCESS; | |
1088 | ||
1089 | free_mem_map: | |
204b0a1a | 1090 | efi_call_early(free_pool, mem_map); |
291f3632 MF |
1091 | return status; |
1092 | } | |
1093 | ||
9ca8f72a MF |
1094 | /* |
1095 | * On success we return a pointer to a boot_params structure, and NULL | |
1096 | * on failure. | |
1097 | */ | |
54b52d87 | 1098 | struct boot_params *efi_main(struct efi_config *c, |
9ca8f72a MF |
1099 | struct boot_params *boot_params) |
1100 | { | |
54b52d87 | 1101 | struct desc_ptr *gdt = NULL; |
9ca8f72a MF |
1102 | efi_loaded_image_t *image; |
1103 | struct setup_header *hdr = &boot_params->hdr; | |
1104 | efi_status_t status; | |
1105 | struct desc_struct *desc; | |
54b52d87 MF |
1106 | void *handle; |
1107 | efi_system_table_t *_table; | |
1108 | bool is64; | |
1109 | ||
1110 | efi_early = c; | |
1111 | ||
1112 | _table = (efi_system_table_t *)(unsigned long)efi_early->table; | |
1113 | handle = (void *)(unsigned long)efi_early->image_handle; | |
1114 | is64 = efi_early->is64; | |
9ca8f72a MF |
1115 | |
1116 | sys_table = _table; | |
1117 | ||
1118 | /* Check if we were booted by the EFI firmware */ | |
1119 | if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) | |
1120 | goto fail; | |
1121 | ||
54b52d87 MF |
1122 | if (is64) |
1123 | setup_boot_services64(efi_early); | |
1124 | else | |
1125 | setup_boot_services32(efi_early); | |
1126 | ||
9ca8f72a | 1127 | setup_graphics(boot_params); |
291f3632 | 1128 | |
56394ab8 | 1129 | setup_efi_pci(boot_params); |
dd5fc854 | 1130 | |
204b0a1a MF |
1131 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
1132 | sizeof(*gdt), (void **)&gdt); | |
9fa7deda | 1133 | if (status != EFI_SUCCESS) { |
876dc36a | 1134 | efi_printk(sys_table, "Failed to alloc mem for gdt structure\n"); |
291f3632 | 1135 | goto fail; |
9fa7deda | 1136 | } |
291f3632 MF |
1137 | |
1138 | gdt->size = 0x800; | |
40e4530a | 1139 | status = efi_low_alloc(sys_table, gdt->size, 8, |
876dc36a | 1140 | (unsigned long *)&gdt->address); |
9fa7deda | 1141 | if (status != EFI_SUCCESS) { |
876dc36a | 1142 | efi_printk(sys_table, "Failed to alloc mem for gdt\n"); |
291f3632 | 1143 | goto fail; |
9fa7deda | 1144 | } |
291f3632 | 1145 | |
9ca8f72a MF |
1146 | /* |
1147 | * If the kernel isn't already loaded at the preferred load | |
1148 | * address, relocate it. | |
1149 | */ | |
1150 | if (hdr->pref_address != hdr->code32_start) { | |
4a9f3a7c RF |
1151 | unsigned long bzimage_addr = hdr->code32_start; |
1152 | status = efi_relocate_kernel(sys_table, &bzimage_addr, | |
1153 | hdr->init_size, hdr->init_size, | |
1154 | hdr->pref_address, | |
1155 | hdr->kernel_alignment); | |
fb86b244 UW |
1156 | if (status != EFI_SUCCESS) { |
1157 | efi_printk(sys_table, "efi_relocate_kernel() failed!\n"); | |
9ca8f72a | 1158 | goto fail; |
fb86b244 | 1159 | } |
4a9f3a7c RF |
1160 | |
1161 | hdr->pref_address = hdr->code32_start; | |
1162 | hdr->code32_start = bzimage_addr; | |
9ca8f72a MF |
1163 | } |
1164 | ||
b8ff87a6 | 1165 | status = exit_boot(boot_params, handle, is64); |
fb86b244 UW |
1166 | if (status != EFI_SUCCESS) { |
1167 | efi_printk(sys_table, "exit_boot() failed!\n"); | |
291f3632 | 1168 | goto fail; |
fb86b244 | 1169 | } |
291f3632 MF |
1170 | |
1171 | memset((char *)gdt->address, 0x0, gdt->size); | |
1172 | desc = (struct desc_struct *)gdt->address; | |
1173 | ||
1174 | /* The first GDT is a dummy and the second is unused. */ | |
1175 | desc += 2; | |
1176 | ||
1177 | desc->limit0 = 0xffff; | |
1178 | desc->base0 = 0x0000; | |
1179 | desc->base1 = 0x0000; | |
1180 | desc->type = SEG_TYPE_CODE | SEG_TYPE_EXEC_READ; | |
1181 | desc->s = DESC_TYPE_CODE_DATA; | |
1182 | desc->dpl = 0; | |
1183 | desc->p = 1; | |
1184 | desc->limit = 0xf; | |
1185 | desc->avl = 0; | |
1186 | desc->l = 0; | |
1187 | desc->d = SEG_OP_SIZE_32BIT; | |
1188 | desc->g = SEG_GRANULARITY_4KB; | |
1189 | desc->base2 = 0x00; | |
1190 | ||
1191 | desc++; | |
1192 | desc->limit0 = 0xffff; | |
1193 | desc->base0 = 0x0000; | |
1194 | desc->base1 = 0x0000; | |
1195 | desc->type = SEG_TYPE_DATA | SEG_TYPE_READ_WRITE; | |
1196 | desc->s = DESC_TYPE_CODE_DATA; | |
1197 | desc->dpl = 0; | |
1198 | desc->p = 1; | |
1199 | desc->limit = 0xf; | |
1200 | desc->avl = 0; | |
1201 | desc->l = 0; | |
1202 | desc->d = SEG_OP_SIZE_32BIT; | |
1203 | desc->g = SEG_GRANULARITY_4KB; | |
1204 | desc->base2 = 0x00; | |
1205 | ||
1206 | #ifdef CONFIG_X86_64 | |
1207 | /* Task segment value */ | |
1208 | desc++; | |
1209 | desc->limit0 = 0x0000; | |
1210 | desc->base0 = 0x0000; | |
1211 | desc->base1 = 0x0000; | |
1212 | desc->type = SEG_TYPE_TSS; | |
1213 | desc->s = 0; | |
1214 | desc->dpl = 0; | |
1215 | desc->p = 1; | |
1216 | desc->limit = 0x0; | |
1217 | desc->avl = 0; | |
1218 | desc->l = 0; | |
1219 | desc->d = 0; | |
1220 | desc->g = SEG_GRANULARITY_4KB; | |
1221 | desc->base2 = 0x00; | |
1222 | #endif /* CONFIG_X86_64 */ | |
1223 | ||
291f3632 | 1224 | asm volatile("cli"); |
0ce6cda2 | 1225 | asm volatile ("lgdt %0" : : "m" (*gdt)); |
291f3632 MF |
1226 | |
1227 | return boot_params; | |
1228 | fail: | |
fb86b244 | 1229 | efi_printk(sys_table, "efi_main() failed!\n"); |
291f3632 MF |
1230 | return NULL; |
1231 | } |