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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 void |
575 | setup_pixel_info(struct screen_info *si, u32 pixels_per_scan_line, | |
576 | struct efi_pixel_bitmask pixel_info, int pixel_format) | |
577 | { | |
291f3632 MF |
578 | if (pixel_format == PIXEL_RGB_RESERVED_8BIT_PER_COLOR) { |
579 | si->lfb_depth = 32; | |
580 | si->lfb_linelength = pixels_per_scan_line * 4; | |
581 | si->red_size = 8; | |
582 | si->red_pos = 0; | |
583 | si->green_size = 8; | |
584 | si->green_pos = 8; | |
585 | si->blue_size = 8; | |
586 | si->blue_pos = 16; | |
587 | si->rsvd_size = 8; | |
588 | si->rsvd_pos = 24; | |
589 | } else if (pixel_format == PIXEL_BGR_RESERVED_8BIT_PER_COLOR) { | |
590 | si->lfb_depth = 32; | |
591 | si->lfb_linelength = pixels_per_scan_line * 4; | |
592 | si->red_size = 8; | |
593 | si->red_pos = 16; | |
594 | si->green_size = 8; | |
595 | si->green_pos = 8; | |
596 | si->blue_size = 8; | |
597 | si->blue_pos = 0; | |
598 | si->rsvd_size = 8; | |
599 | si->rsvd_pos = 24; | |
600 | } else if (pixel_format == PIXEL_BIT_MASK) { | |
601 | find_bits(pixel_info.red_mask, &si->red_pos, &si->red_size); | |
602 | find_bits(pixel_info.green_mask, &si->green_pos, | |
603 | &si->green_size); | |
604 | find_bits(pixel_info.blue_mask, &si->blue_pos, &si->blue_size); | |
605 | find_bits(pixel_info.reserved_mask, &si->rsvd_pos, | |
606 | &si->rsvd_size); | |
607 | si->lfb_depth = si->red_size + si->green_size + | |
608 | si->blue_size + si->rsvd_size; | |
609 | si->lfb_linelength = (pixels_per_scan_line * si->lfb_depth) / 8; | |
610 | } else { | |
611 | si->lfb_depth = 4; | |
612 | si->lfb_linelength = si->lfb_width / 2; | |
613 | si->red_size = 0; | |
614 | si->red_pos = 0; | |
615 | si->green_size = 0; | |
616 | si->green_pos = 0; | |
617 | si->blue_size = 0; | |
618 | si->blue_pos = 0; | |
619 | si->rsvd_size = 0; | |
620 | si->rsvd_pos = 0; | |
621 | } | |
c116e8d6 MF |
622 | } |
623 | ||
624 | static efi_status_t | |
625 | __gop_query32(struct efi_graphics_output_protocol_32 *gop32, | |
626 | struct efi_graphics_output_mode_info **info, | |
627 | unsigned long *size, u32 *fb_base) | |
628 | { | |
629 | struct efi_graphics_output_protocol_mode_32 *mode; | |
630 | efi_status_t status; | |
631 | unsigned long m; | |
632 | ||
633 | m = gop32->mode; | |
634 | mode = (struct efi_graphics_output_protocol_mode_32 *)m; | |
635 | ||
636 | status = efi_early->call(gop32->query_mode, gop32, | |
637 | mode->mode, size, info); | |
638 | if (status != EFI_SUCCESS) | |
639 | return status; | |
640 | ||
641 | *fb_base = mode->frame_buffer_base; | |
642 | return status; | |
643 | } | |
644 | ||
645 | static efi_status_t | |
646 | setup_gop32(struct screen_info *si, efi_guid_t *proto, | |
647 | unsigned long size, void **gop_handle) | |
648 | { | |
649 | struct efi_graphics_output_protocol_32 *gop32, *first_gop; | |
650 | unsigned long nr_gops; | |
651 | u16 width, height; | |
652 | u32 pixels_per_scan_line; | |
653 | u32 fb_base; | |
654 | struct efi_pixel_bitmask pixel_info; | |
655 | int pixel_format; | |
656 | efi_status_t status; | |
657 | u32 *handles = (u32 *)(unsigned long)gop_handle; | |
658 | int i; | |
659 | ||
660 | first_gop = NULL; | |
661 | gop32 = NULL; | |
662 | ||
663 | nr_gops = size / sizeof(u32); | |
664 | for (i = 0; i < nr_gops; i++) { | |
665 | struct efi_graphics_output_mode_info *info = NULL; | |
666 | efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID; | |
667 | bool conout_found = false; | |
668 | void *dummy = NULL; | |
669 | u32 h = handles[i]; | |
670 | ||
204b0a1a MF |
671 | status = efi_call_early(handle_protocol, h, |
672 | proto, (void **)&gop32); | |
c116e8d6 MF |
673 | if (status != EFI_SUCCESS) |
674 | continue; | |
675 | ||
204b0a1a MF |
676 | status = efi_call_early(handle_protocol, h, |
677 | &conout_proto, &dummy); | |
c116e8d6 MF |
678 | if (status == EFI_SUCCESS) |
679 | conout_found = true; | |
680 | ||
681 | status = __gop_query32(gop32, &info, &size, &fb_base); | |
682 | if (status == EFI_SUCCESS && (!first_gop || conout_found)) { | |
683 | /* | |
684 | * Systems that use the UEFI Console Splitter may | |
685 | * provide multiple GOP devices, not all of which are | |
686 | * backed by real hardware. The workaround is to search | |
687 | * for a GOP implementing the ConOut protocol, and if | |
688 | * one isn't found, to just fall back to the first GOP. | |
689 | */ | |
690 | width = info->horizontal_resolution; | |
691 | height = info->vertical_resolution; | |
692 | pixel_format = info->pixel_format; | |
693 | pixel_info = info->pixel_information; | |
694 | pixels_per_scan_line = info->pixels_per_scan_line; | |
695 | ||
696 | /* | |
697 | * Once we've found a GOP supporting ConOut, | |
698 | * don't bother looking any further. | |
699 | */ | |
700 | first_gop = gop32; | |
701 | if (conout_found) | |
702 | break; | |
703 | } | |
704 | } | |
705 | ||
706 | /* Did we find any GOPs? */ | |
707 | if (!first_gop) | |
708 | goto out; | |
709 | ||
710 | /* EFI framebuffer */ | |
711 | si->orig_video_isVGA = VIDEO_TYPE_EFI; | |
712 | ||
713 | si->lfb_width = width; | |
714 | si->lfb_height = height; | |
715 | si->lfb_base = fb_base; | |
716 | si->pages = 1; | |
717 | ||
718 | setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format); | |
291f3632 | 719 | |
e9b10953 MG |
720 | si->lfb_size = si->lfb_linelength * si->lfb_height; |
721 | ||
f462ed93 | 722 | si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS; |
c116e8d6 MF |
723 | out: |
724 | return status; | |
725 | } | |
f462ed93 | 726 | |
c116e8d6 MF |
727 | static efi_status_t |
728 | __gop_query64(struct efi_graphics_output_protocol_64 *gop64, | |
729 | struct efi_graphics_output_mode_info **info, | |
730 | unsigned long *size, u32 *fb_base) | |
731 | { | |
732 | struct efi_graphics_output_protocol_mode_64 *mode; | |
733 | efi_status_t status; | |
734 | unsigned long m; | |
735 | ||
736 | m = gop64->mode; | |
737 | mode = (struct efi_graphics_output_protocol_mode_64 *)m; | |
738 | ||
739 | status = efi_early->call(gop64->query_mode, gop64, | |
740 | mode->mode, size, info); | |
741 | if (status != EFI_SUCCESS) | |
742 | return status; | |
743 | ||
744 | *fb_base = mode->frame_buffer_base; | |
745 | return status; | |
746 | } | |
747 | ||
748 | static efi_status_t | |
749 | setup_gop64(struct screen_info *si, efi_guid_t *proto, | |
750 | unsigned long size, void **gop_handle) | |
751 | { | |
752 | struct efi_graphics_output_protocol_64 *gop64, *first_gop; | |
753 | unsigned long nr_gops; | |
754 | u16 width, height; | |
755 | u32 pixels_per_scan_line; | |
756 | u32 fb_base; | |
757 | struct efi_pixel_bitmask pixel_info; | |
758 | int pixel_format; | |
759 | efi_status_t status; | |
760 | u64 *handles = (u64 *)(unsigned long)gop_handle; | |
761 | int i; | |
762 | ||
763 | first_gop = NULL; | |
764 | gop64 = NULL; | |
765 | ||
766 | nr_gops = size / sizeof(u64); | |
767 | for (i = 0; i < nr_gops; i++) { | |
768 | struct efi_graphics_output_mode_info *info = NULL; | |
769 | efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID; | |
770 | bool conout_found = false; | |
771 | void *dummy = NULL; | |
772 | u64 h = handles[i]; | |
773 | ||
204b0a1a MF |
774 | status = efi_call_early(handle_protocol, h, |
775 | proto, (void **)&gop64); | |
c116e8d6 MF |
776 | if (status != EFI_SUCCESS) |
777 | continue; | |
778 | ||
204b0a1a MF |
779 | status = efi_call_early(handle_protocol, h, |
780 | &conout_proto, &dummy); | |
c116e8d6 MF |
781 | if (status == EFI_SUCCESS) |
782 | conout_found = true; | |
783 | ||
784 | status = __gop_query64(gop64, &info, &size, &fb_base); | |
785 | if (status == EFI_SUCCESS && (!first_gop || conout_found)) { | |
786 | /* | |
787 | * Systems that use the UEFI Console Splitter may | |
788 | * provide multiple GOP devices, not all of which are | |
789 | * backed by real hardware. The workaround is to search | |
790 | * for a GOP implementing the ConOut protocol, and if | |
791 | * one isn't found, to just fall back to the first GOP. | |
792 | */ | |
793 | width = info->horizontal_resolution; | |
794 | height = info->vertical_resolution; | |
795 | pixel_format = info->pixel_format; | |
796 | pixel_info = info->pixel_information; | |
797 | pixels_per_scan_line = info->pixels_per_scan_line; | |
798 | ||
799 | /* | |
800 | * Once we've found a GOP supporting ConOut, | |
801 | * don't bother looking any further. | |
802 | */ | |
803 | first_gop = gop64; | |
804 | if (conout_found) | |
805 | break; | |
806 | } | |
807 | } | |
808 | ||
809 | /* Did we find any GOPs? */ | |
810 | if (!first_gop) | |
811 | goto out; | |
812 | ||
813 | /* EFI framebuffer */ | |
814 | si->orig_video_isVGA = VIDEO_TYPE_EFI; | |
815 | ||
816 | si->lfb_width = width; | |
817 | si->lfb_height = height; | |
818 | si->lfb_base = fb_base; | |
819 | si->pages = 1; | |
820 | ||
821 | setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format); | |
822 | ||
823 | si->lfb_size = si->lfb_linelength * si->lfb_height; | |
824 | ||
825 | si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS; | |
826 | out: | |
291f3632 MF |
827 | return status; |
828 | } | |
829 | ||
830 | /* | |
c116e8d6 | 831 | * See if we have Graphics Output Protocol |
291f3632 | 832 | */ |
c116e8d6 | 833 | static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto, |
291f3632 MF |
834 | unsigned long size) |
835 | { | |
291f3632 | 836 | efi_status_t status; |
c116e8d6 | 837 | void **gop_handle = NULL; |
291f3632 | 838 | |
204b0a1a MF |
839 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
840 | size, (void **)&gop_handle); | |
291f3632 MF |
841 | if (status != EFI_SUCCESS) |
842 | return status; | |
843 | ||
204b0a1a MF |
844 | status = efi_call_early(locate_handle, |
845 | EFI_LOCATE_BY_PROTOCOL, | |
846 | proto, NULL, &size, gop_handle); | |
291f3632 MF |
847 | if (status != EFI_SUCCESS) |
848 | goto free_handle; | |
849 | ||
c116e8d6 MF |
850 | if (efi_early->is64) |
851 | status = setup_gop64(si, proto, size, gop_handle); | |
852 | else | |
853 | status = setup_gop32(si, proto, size, gop_handle); | |
854 | ||
855 | free_handle: | |
204b0a1a | 856 | efi_call_early(free_pool, gop_handle); |
c116e8d6 MF |
857 | return status; |
858 | } | |
859 | ||
860 | static efi_status_t | |
861 | setup_uga32(void **uga_handle, unsigned long size, u32 *width, u32 *height) | |
862 | { | |
863 | struct efi_uga_draw_protocol *uga = NULL, *first_uga; | |
864 | efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; | |
865 | unsigned long nr_ugas; | |
866 | u32 *handles = (u32 *)uga_handle;; | |
867 | efi_status_t status; | |
868 | int i; | |
869 | ||
291f3632 | 870 | first_uga = NULL; |
c116e8d6 MF |
871 | nr_ugas = size / sizeof(u32); |
872 | for (i = 0; i < nr_ugas; i++) { | |
873 | efi_guid_t pciio_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
874 | u32 w, h, depth, refresh; | |
875 | void *pciio; | |
876 | u32 handle = handles[i]; | |
877 | ||
204b0a1a MF |
878 | status = efi_call_early(handle_protocol, handle, |
879 | &uga_proto, (void **)&uga); | |
c116e8d6 MF |
880 | if (status != EFI_SUCCESS) |
881 | continue; | |
882 | ||
204b0a1a | 883 | efi_call_early(handle_protocol, handle, &pciio_proto, &pciio); |
c116e8d6 MF |
884 | |
885 | status = efi_early->call((unsigned long)uga->get_mode, uga, | |
886 | &w, &h, &depth, &refresh); | |
887 | if (status == EFI_SUCCESS && (!first_uga || pciio)) { | |
888 | *width = w; | |
889 | *height = h; | |
890 | ||
891 | /* | |
892 | * Once we've found a UGA supporting PCIIO, | |
893 | * don't bother looking any further. | |
894 | */ | |
895 | if (pciio) | |
896 | break; | |
897 | ||
898 | first_uga = uga; | |
899 | } | |
900 | } | |
901 | ||
902 | return status; | |
903 | } | |
291f3632 | 904 | |
c116e8d6 MF |
905 | static efi_status_t |
906 | setup_uga64(void **uga_handle, unsigned long size, u32 *width, u32 *height) | |
907 | { | |
908 | struct efi_uga_draw_protocol *uga = NULL, *first_uga; | |
909 | efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; | |
910 | unsigned long nr_ugas; | |
911 | u64 *handles = (u64 *)uga_handle;; | |
912 | efi_status_t status; | |
913 | int i; | |
914 | ||
915 | first_uga = NULL; | |
916 | nr_ugas = size / sizeof(u64); | |
291f3632 MF |
917 | for (i = 0; i < nr_ugas; i++) { |
918 | efi_guid_t pciio_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
291f3632 MF |
919 | u32 w, h, depth, refresh; |
920 | void *pciio; | |
c116e8d6 | 921 | u64 handle = handles[i]; |
291f3632 | 922 | |
204b0a1a MF |
923 | status = efi_call_early(handle_protocol, handle, |
924 | &uga_proto, (void **)&uga); | |
291f3632 MF |
925 | if (status != EFI_SUCCESS) |
926 | continue; | |
927 | ||
204b0a1a | 928 | efi_call_early(handle_protocol, handle, &pciio_proto, &pciio); |
291f3632 | 929 | |
54b52d87 MF |
930 | status = efi_early->call((unsigned long)uga->get_mode, uga, |
931 | &w, &h, &depth, &refresh); | |
291f3632 | 932 | if (status == EFI_SUCCESS && (!first_uga || pciio)) { |
c116e8d6 MF |
933 | *width = w; |
934 | *height = h; | |
291f3632 MF |
935 | |
936 | /* | |
937 | * Once we've found a UGA supporting PCIIO, | |
938 | * don't bother looking any further. | |
939 | */ | |
940 | if (pciio) | |
941 | break; | |
942 | ||
943 | first_uga = uga; | |
944 | } | |
945 | } | |
946 | ||
c116e8d6 MF |
947 | return status; |
948 | } | |
949 | ||
950 | /* | |
951 | * See if we have Universal Graphics Adapter (UGA) protocol | |
952 | */ | |
953 | static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto, | |
954 | unsigned long size) | |
955 | { | |
956 | efi_status_t status; | |
957 | u32 width, height; | |
958 | void **uga_handle = NULL; | |
959 | ||
204b0a1a MF |
960 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
961 | size, (void **)&uga_handle); | |
c116e8d6 MF |
962 | if (status != EFI_SUCCESS) |
963 | return status; | |
964 | ||
204b0a1a MF |
965 | status = efi_call_early(locate_handle, |
966 | EFI_LOCATE_BY_PROTOCOL, | |
967 | uga_proto, NULL, &size, uga_handle); | |
c116e8d6 MF |
968 | if (status != EFI_SUCCESS) |
969 | goto free_handle; | |
970 | ||
971 | height = 0; | |
972 | width = 0; | |
973 | ||
974 | if (efi_early->is64) | |
975 | status = setup_uga64(uga_handle, size, &width, &height); | |
976 | else | |
977 | status = setup_uga32(uga_handle, size, &width, &height); | |
978 | ||
979 | if (!width && !height) | |
291f3632 MF |
980 | goto free_handle; |
981 | ||
982 | /* EFI framebuffer */ | |
983 | si->orig_video_isVGA = VIDEO_TYPE_EFI; | |
984 | ||
985 | si->lfb_depth = 32; | |
986 | si->lfb_width = width; | |
987 | si->lfb_height = height; | |
988 | ||
989 | si->red_size = 8; | |
990 | si->red_pos = 16; | |
991 | si->green_size = 8; | |
992 | si->green_pos = 8; | |
993 | si->blue_size = 8; | |
994 | si->blue_pos = 0; | |
995 | si->rsvd_size = 8; | |
996 | si->rsvd_pos = 24; | |
997 | ||
291f3632 | 998 | free_handle: |
204b0a1a | 999 | efi_call_early(free_pool, uga_handle); |
291f3632 MF |
1000 | return status; |
1001 | } | |
1002 | ||
1003 | void setup_graphics(struct boot_params *boot_params) | |
1004 | { | |
1005 | efi_guid_t graphics_proto = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; | |
1006 | struct screen_info *si; | |
1007 | efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; | |
1008 | efi_status_t status; | |
1009 | unsigned long size; | |
1010 | void **gop_handle = NULL; | |
1011 | void **uga_handle = NULL; | |
1012 | ||
1013 | si = &boot_params->screen_info; | |
1014 | memset(si, 0, sizeof(*si)); | |
1015 | ||
1016 | size = 0; | |
204b0a1a MF |
1017 | status = efi_call_early(locate_handle, |
1018 | EFI_LOCATE_BY_PROTOCOL, | |
1019 | &graphics_proto, NULL, &size, gop_handle); | |
291f3632 MF |
1020 | if (status == EFI_BUFFER_TOO_SMALL) |
1021 | status = setup_gop(si, &graphics_proto, size); | |
1022 | ||
1023 | if (status != EFI_SUCCESS) { | |
1024 | size = 0; | |
204b0a1a MF |
1025 | status = efi_call_early(locate_handle, |
1026 | EFI_LOCATE_BY_PROTOCOL, | |
1027 | &uga_proto, NULL, &size, uga_handle); | |
291f3632 MF |
1028 | if (status == EFI_BUFFER_TOO_SMALL) |
1029 | setup_uga(si, &uga_proto, size); | |
1030 | } | |
1031 | } | |
1032 | ||
291f3632 MF |
1033 | /* |
1034 | * Because the x86 boot code expects to be passed a boot_params we | |
1035 | * need to create one ourselves (usually the bootloader would create | |
1036 | * one for us). | |
7e8213c1 MF |
1037 | * |
1038 | * The caller is responsible for filling out ->code32_start in the | |
1039 | * returned boot_params. | |
291f3632 | 1040 | */ |
54b52d87 | 1041 | struct boot_params *make_boot_params(struct efi_config *c) |
291f3632 | 1042 | { |
9ca8f72a MF |
1043 | struct boot_params *boot_params; |
1044 | struct sys_desc_table *sdt; | |
1045 | struct apm_bios_info *bi; | |
1046 | struct setup_header *hdr; | |
1047 | struct efi_info *efi; | |
1048 | efi_loaded_image_t *image; | |
54b52d87 | 1049 | void *options, *handle; |
9ca8f72a | 1050 | efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID; |
291f3632 MF |
1051 | int options_size = 0; |
1052 | efi_status_t status; | |
5fef3870 | 1053 | char *cmdline_ptr; |
291f3632 MF |
1054 | u16 *s2; |
1055 | u8 *s1; | |
1056 | int i; | |
46f4582e RF |
1057 | unsigned long ramdisk_addr; |
1058 | unsigned long ramdisk_size; | |
291f3632 | 1059 | |
54b52d87 MF |
1060 | efi_early = c; |
1061 | sys_table = (efi_system_table_t *)(unsigned long)efi_early->table; | |
1062 | handle = (void *)(unsigned long)efi_early->image_handle; | |
9ca8f72a MF |
1063 | |
1064 | /* Check if we were booted by the EFI firmware */ | |
1065 | if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) | |
1066 | return NULL; | |
1067 | ||
54b52d87 MF |
1068 | if (efi_early->is64) |
1069 | setup_boot_services64(efi_early); | |
1070 | else | |
1071 | setup_boot_services32(efi_early); | |
1072 | ||
204b0a1a MF |
1073 | status = efi_call_early(handle_protocol, handle, |
1074 | &proto, (void *)&image); | |
9ca8f72a | 1075 | if (status != EFI_SUCCESS) { |
876dc36a | 1076 | efi_printk(sys_table, "Failed to get handle for LOADED_IMAGE_PROTOCOL\n"); |
9ca8f72a MF |
1077 | return NULL; |
1078 | } | |
1079 | ||
40e4530a RF |
1080 | status = efi_low_alloc(sys_table, 0x4000, 1, |
1081 | (unsigned long *)&boot_params); | |
9ca8f72a | 1082 | if (status != EFI_SUCCESS) { |
876dc36a | 1083 | efi_printk(sys_table, "Failed to alloc lowmem for boot params\n"); |
9ca8f72a MF |
1084 | return NULL; |
1085 | } | |
1086 | ||
1087 | memset(boot_params, 0x0, 0x4000); | |
1088 | ||
1089 | hdr = &boot_params->hdr; | |
1090 | efi = &boot_params->efi_info; | |
1091 | bi = &boot_params->apm_bios_info; | |
1092 | sdt = &boot_params->sys_desc_table; | |
1093 | ||
1094 | /* Copy the second sector to boot_params */ | |
1095 | memcpy(&hdr->jump, image->image_base + 512, 512); | |
1096 | ||
1097 | /* | |
1098 | * Fill out some of the header fields ourselves because the | |
1099 | * EFI firmware loader doesn't load the first sector. | |
1100 | */ | |
1101 | hdr->root_flags = 1; | |
1102 | hdr->vid_mode = 0xffff; | |
1103 | hdr->boot_flag = 0xAA55; | |
1104 | ||
291f3632 MF |
1105 | hdr->type_of_loader = 0x21; |
1106 | ||
1107 | /* Convert unicode cmdline to ascii */ | |
c625d1c2 | 1108 | cmdline_ptr = efi_convert_cmdline(sys_table, image, &options_size); |
5fef3870 RF |
1109 | if (!cmdline_ptr) |
1110 | goto fail; | |
1111 | hdr->cmd_line_ptr = (unsigned long)cmdline_ptr; | |
98b228f5 RF |
1112 | /* Fill in upper bits of command line address, NOP on 32 bit */ |
1113 | boot_params->ext_cmd_line_ptr = (u64)(unsigned long)cmdline_ptr >> 32; | |
291f3632 MF |
1114 | |
1115 | hdr->ramdisk_image = 0; | |
1116 | hdr->ramdisk_size = 0; | |
1117 | ||
291f3632 MF |
1118 | /* Clear APM BIOS info */ |
1119 | memset(bi, 0, sizeof(*bi)); | |
1120 | ||
1121 | memset(sdt, 0, sizeof(*sdt)); | |
1122 | ||
5a17dae4 MF |
1123 | status = efi_parse_options(cmdline_ptr); |
1124 | if (status != EFI_SUCCESS) | |
1125 | goto fail2; | |
1126 | ||
46f4582e RF |
1127 | status = handle_cmdline_files(sys_table, image, |
1128 | (char *)(unsigned long)hdr->cmd_line_ptr, | |
47226ad4 | 1129 | "initrd=", hdr->initrd_addr_max, |
46f4582e | 1130 | &ramdisk_addr, &ramdisk_size); |
47226ad4 YL |
1131 | |
1132 | if (status != EFI_SUCCESS && | |
1133 | hdr->xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G) { | |
1134 | efi_printk(sys_table, "Trying to load files to higher address\n"); | |
1135 | status = handle_cmdline_files(sys_table, image, | |
1136 | (char *)(unsigned long)hdr->cmd_line_ptr, | |
1137 | "initrd=", -1UL, | |
1138 | &ramdisk_addr, &ramdisk_size); | |
1139 | } | |
1140 | ||
9ca8f72a MF |
1141 | if (status != EFI_SUCCESS) |
1142 | goto fail2; | |
4bf7111f YL |
1143 | hdr->ramdisk_image = ramdisk_addr & 0xffffffff; |
1144 | hdr->ramdisk_size = ramdisk_size & 0xffffffff; | |
1145 | boot_params->ext_ramdisk_image = (u64)ramdisk_addr >> 32; | |
1146 | boot_params->ext_ramdisk_size = (u64)ramdisk_size >> 32; | |
9ca8f72a MF |
1147 | |
1148 | return boot_params; | |
1149 | fail2: | |
0e1cadb0 | 1150 | efi_free(sys_table, options_size, hdr->cmd_line_ptr); |
9ca8f72a | 1151 | fail: |
40e4530a | 1152 | efi_free(sys_table, 0x4000, (unsigned long)boot_params); |
9ca8f72a MF |
1153 | return NULL; |
1154 | } | |
1155 | ||
d2078d5a LC |
1156 | static void add_e820ext(struct boot_params *params, |
1157 | struct setup_data *e820ext, u32 nr_entries) | |
9ca8f72a | 1158 | { |
d2078d5a | 1159 | struct setup_data *data; |
9ca8f72a | 1160 | efi_status_t status; |
d2078d5a | 1161 | unsigned long size; |
291f3632 | 1162 | |
d2078d5a LC |
1163 | e820ext->type = SETUP_E820_EXT; |
1164 | e820ext->len = nr_entries * sizeof(struct e820entry); | |
1165 | e820ext->next = 0; | |
291f3632 | 1166 | |
d2078d5a | 1167 | data = (struct setup_data *)(unsigned long)params->hdr.setup_data; |
291f3632 | 1168 | |
d2078d5a LC |
1169 | while (data && data->next) |
1170 | data = (struct setup_data *)(unsigned long)data->next; | |
d3768d88 | 1171 | |
d2078d5a LC |
1172 | if (data) |
1173 | data->next = (unsigned long)e820ext; | |
1174 | else | |
1175 | params->hdr.setup_data = (unsigned long)e820ext; | |
1176 | } | |
291f3632 | 1177 | |
d2078d5a LC |
1178 | static efi_status_t setup_e820(struct boot_params *params, |
1179 | struct setup_data *e820ext, u32 e820ext_size) | |
1180 | { | |
1181 | struct e820entry *e820_map = ¶ms->e820_map[0]; | |
1182 | struct efi_info *efi = ¶ms->efi_info; | |
1183 | struct e820entry *prev = NULL; | |
1184 | u32 nr_entries; | |
1185 | u32 nr_desc; | |
1186 | int i; | |
291f3632 | 1187 | |
291f3632 | 1188 | nr_entries = 0; |
d2078d5a LC |
1189 | nr_desc = efi->efi_memmap_size / efi->efi_memdesc_size; |
1190 | ||
1191 | for (i = 0; i < nr_desc; i++) { | |
291f3632 MF |
1192 | efi_memory_desc_t *d; |
1193 | unsigned int e820_type = 0; | |
d2078d5a | 1194 | unsigned long m = efi->efi_memmap; |
291f3632 | 1195 | |
d2078d5a | 1196 | d = (efi_memory_desc_t *)(m + (i * efi->efi_memdesc_size)); |
291f3632 MF |
1197 | switch (d->type) { |
1198 | case EFI_RESERVED_TYPE: | |
1199 | case EFI_RUNTIME_SERVICES_CODE: | |
1200 | case EFI_RUNTIME_SERVICES_DATA: | |
1201 | case EFI_MEMORY_MAPPED_IO: | |
1202 | case EFI_MEMORY_MAPPED_IO_PORT_SPACE: | |
1203 | case EFI_PAL_CODE: | |
1204 | e820_type = E820_RESERVED; | |
1205 | break; | |
1206 | ||
1207 | case EFI_UNUSABLE_MEMORY: | |
1208 | e820_type = E820_UNUSABLE; | |
1209 | break; | |
1210 | ||
1211 | case EFI_ACPI_RECLAIM_MEMORY: | |
1212 | e820_type = E820_ACPI; | |
1213 | break; | |
1214 | ||
1215 | case EFI_LOADER_CODE: | |
1216 | case EFI_LOADER_DATA: | |
1217 | case EFI_BOOT_SERVICES_CODE: | |
1218 | case EFI_BOOT_SERVICES_DATA: | |
1219 | case EFI_CONVENTIONAL_MEMORY: | |
1220 | e820_type = E820_RAM; | |
1221 | break; | |
1222 | ||
1223 | case EFI_ACPI_MEMORY_NVS: | |
1224 | e820_type = E820_NVS; | |
1225 | break; | |
1226 | ||
1227 | default: | |
1228 | continue; | |
1229 | } | |
1230 | ||
1231 | /* Merge adjacent mappings */ | |
1232 | if (prev && prev->type == e820_type && | |
d2078d5a | 1233 | (prev->addr + prev->size) == d->phys_addr) { |
291f3632 | 1234 | prev->size += d->num_pages << 12; |
d2078d5a | 1235 | continue; |
291f3632 | 1236 | } |
d2078d5a LC |
1237 | |
1238 | if (nr_entries == ARRAY_SIZE(params->e820_map)) { | |
1239 | u32 need = (nr_desc - i) * sizeof(struct e820entry) + | |
1240 | sizeof(struct setup_data); | |
1241 | ||
1242 | if (!e820ext || e820ext_size < need) | |
1243 | return EFI_BUFFER_TOO_SMALL; | |
1244 | ||
1245 | /* boot_params map full, switch to e820 extended */ | |
1246 | e820_map = (struct e820entry *)e820ext->data; | |
1247 | } | |
1248 | ||
1249 | e820_map->addr = d->phys_addr; | |
1250 | e820_map->size = d->num_pages << PAGE_SHIFT; | |
1251 | e820_map->type = e820_type; | |
1252 | prev = e820_map++; | |
1253 | nr_entries++; | |
291f3632 MF |
1254 | } |
1255 | ||
d2078d5a LC |
1256 | if (nr_entries > ARRAY_SIZE(params->e820_map)) { |
1257 | u32 nr_e820ext = nr_entries - ARRAY_SIZE(params->e820_map); | |
1258 | ||
1259 | add_e820ext(params, e820ext, nr_e820ext); | |
1260 | nr_entries -= nr_e820ext; | |
1261 | } | |
1262 | ||
1263 | params->e820_entries = (u8)nr_entries; | |
1264 | ||
1265 | return EFI_SUCCESS; | |
1266 | } | |
1267 | ||
1268 | static efi_status_t alloc_e820ext(u32 nr_desc, struct setup_data **e820ext, | |
1269 | u32 *e820ext_size) | |
1270 | { | |
1271 | efi_status_t status; | |
1272 | unsigned long size; | |
1273 | ||
1274 | size = sizeof(struct setup_data) + | |
1275 | sizeof(struct e820entry) * nr_desc; | |
1276 | ||
1277 | if (*e820ext) { | |
204b0a1a | 1278 | efi_call_early(free_pool, *e820ext); |
d2078d5a LC |
1279 | *e820ext = NULL; |
1280 | *e820ext_size = 0; | |
1281 | } | |
1282 | ||
204b0a1a MF |
1283 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
1284 | size, (void **)e820ext); | |
d2078d5a LC |
1285 | if (status == EFI_SUCCESS) |
1286 | *e820ext_size = size; | |
1287 | ||
1288 | return status; | |
1289 | } | |
1290 | ||
1291 | static efi_status_t exit_boot(struct boot_params *boot_params, | |
b8ff87a6 | 1292 | void *handle, bool is64) |
d2078d5a LC |
1293 | { |
1294 | struct efi_info *efi = &boot_params->efi_info; | |
1295 | unsigned long map_sz, key, desc_size; | |
1296 | efi_memory_desc_t *mem_map; | |
1297 | struct setup_data *e820ext; | |
b8ff87a6 | 1298 | const char *signature; |
d2078d5a LC |
1299 | __u32 e820ext_size; |
1300 | __u32 nr_desc, prev_nr_desc; | |
1301 | efi_status_t status; | |
1302 | __u32 desc_version; | |
1303 | bool called_exit = false; | |
1304 | u8 nr_entries; | |
1305 | int i; | |
1306 | ||
1307 | nr_desc = 0; | |
1308 | e820ext = NULL; | |
1309 | e820ext_size = 0; | |
1310 | ||
1311 | get_map: | |
1312 | status = efi_get_memory_map(sys_table, &mem_map, &map_sz, &desc_size, | |
1313 | &desc_version, &key); | |
1314 | ||
1315 | if (status != EFI_SUCCESS) | |
1316 | return status; | |
1317 | ||
1318 | prev_nr_desc = nr_desc; | |
1319 | nr_desc = map_sz / desc_size; | |
1320 | if (nr_desc > prev_nr_desc && | |
1321 | nr_desc > ARRAY_SIZE(boot_params->e820_map)) { | |
1322 | u32 nr_e820ext = nr_desc - ARRAY_SIZE(boot_params->e820_map); | |
1323 | ||
1324 | status = alloc_e820ext(nr_e820ext, &e820ext, &e820ext_size); | |
1325 | if (status != EFI_SUCCESS) | |
1326 | goto free_mem_map; | |
1327 | ||
204b0a1a | 1328 | efi_call_early(free_pool, mem_map); |
d2078d5a LC |
1329 | goto get_map; /* Allocated memory, get map again */ |
1330 | } | |
1331 | ||
b8ff87a6 MF |
1332 | signature = is64 ? EFI64_LOADER_SIGNATURE : EFI32_LOADER_SIGNATURE; |
1333 | memcpy(&efi->efi_loader_signature, signature, sizeof(__u32)); | |
1334 | ||
d2078d5a LC |
1335 | efi->efi_systab = (unsigned long)sys_table; |
1336 | efi->efi_memdesc_size = desc_size; | |
1337 | efi->efi_memdesc_version = desc_version; | |
1338 | efi->efi_memmap = (unsigned long)mem_map; | |
1339 | efi->efi_memmap_size = map_sz; | |
1340 | ||
1341 | #ifdef CONFIG_X86_64 | |
1342 | efi->efi_systab_hi = (unsigned long)sys_table >> 32; | |
1343 | efi->efi_memmap_hi = (unsigned long)mem_map >> 32; | |
1344 | #endif | |
1345 | ||
1346 | /* Might as well exit boot services now */ | |
204b0a1a | 1347 | status = efi_call_early(exit_boot_services, handle, key); |
d2078d5a LC |
1348 | if (status != EFI_SUCCESS) { |
1349 | /* | |
1350 | * ExitBootServices() will fail if any of the event | |
1351 | * handlers change the memory map. In which case, we | |
1352 | * must be prepared to retry, but only once so that | |
1353 | * we're guaranteed to exit on repeated failures instead | |
1354 | * of spinning forever. | |
1355 | */ | |
1356 | if (called_exit) | |
1357 | goto free_mem_map; | |
1358 | ||
1359 | called_exit = true; | |
204b0a1a | 1360 | efi_call_early(free_pool, mem_map); |
d2078d5a LC |
1361 | goto get_map; |
1362 | } | |
1363 | ||
1364 | /* Historic? */ | |
1365 | boot_params->alt_mem_k = 32 * 1024; | |
1366 | ||
1367 | status = setup_e820(boot_params, e820ext, e820ext_size); | |
1368 | if (status != EFI_SUCCESS) | |
1369 | return status; | |
291f3632 MF |
1370 | |
1371 | return EFI_SUCCESS; | |
1372 | ||
1373 | free_mem_map: | |
204b0a1a | 1374 | efi_call_early(free_pool, mem_map); |
291f3632 MF |
1375 | return status; |
1376 | } | |
1377 | ||
9ca8f72a MF |
1378 | /* |
1379 | * On success we return a pointer to a boot_params structure, and NULL | |
1380 | * on failure. | |
1381 | */ | |
54b52d87 | 1382 | struct boot_params *efi_main(struct efi_config *c, |
9ca8f72a MF |
1383 | struct boot_params *boot_params) |
1384 | { | |
54b52d87 | 1385 | struct desc_ptr *gdt = NULL; |
9ca8f72a MF |
1386 | efi_loaded_image_t *image; |
1387 | struct setup_header *hdr = &boot_params->hdr; | |
1388 | efi_status_t status; | |
1389 | struct desc_struct *desc; | |
54b52d87 MF |
1390 | void *handle; |
1391 | efi_system_table_t *_table; | |
1392 | bool is64; | |
1393 | ||
1394 | efi_early = c; | |
1395 | ||
1396 | _table = (efi_system_table_t *)(unsigned long)efi_early->table; | |
1397 | handle = (void *)(unsigned long)efi_early->image_handle; | |
1398 | is64 = efi_early->is64; | |
9ca8f72a MF |
1399 | |
1400 | sys_table = _table; | |
1401 | ||
1402 | /* Check if we were booted by the EFI firmware */ | |
1403 | if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) | |
1404 | goto fail; | |
1405 | ||
54b52d87 MF |
1406 | if (is64) |
1407 | setup_boot_services64(efi_early); | |
1408 | else | |
1409 | setup_boot_services32(efi_early); | |
1410 | ||
9ca8f72a | 1411 | setup_graphics(boot_params); |
291f3632 | 1412 | |
56394ab8 | 1413 | setup_efi_pci(boot_params); |
dd5fc854 | 1414 | |
204b0a1a MF |
1415 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
1416 | sizeof(*gdt), (void **)&gdt); | |
9fa7deda | 1417 | if (status != EFI_SUCCESS) { |
876dc36a | 1418 | efi_printk(sys_table, "Failed to alloc mem for gdt structure\n"); |
291f3632 | 1419 | goto fail; |
9fa7deda | 1420 | } |
291f3632 MF |
1421 | |
1422 | gdt->size = 0x800; | |
40e4530a | 1423 | status = efi_low_alloc(sys_table, gdt->size, 8, |
876dc36a | 1424 | (unsigned long *)&gdt->address); |
9fa7deda | 1425 | if (status != EFI_SUCCESS) { |
876dc36a | 1426 | efi_printk(sys_table, "Failed to alloc mem for gdt\n"); |
291f3632 | 1427 | goto fail; |
9fa7deda | 1428 | } |
291f3632 | 1429 | |
9ca8f72a MF |
1430 | /* |
1431 | * If the kernel isn't already loaded at the preferred load | |
1432 | * address, relocate it. | |
1433 | */ | |
1434 | if (hdr->pref_address != hdr->code32_start) { | |
4a9f3a7c RF |
1435 | unsigned long bzimage_addr = hdr->code32_start; |
1436 | status = efi_relocate_kernel(sys_table, &bzimage_addr, | |
1437 | hdr->init_size, hdr->init_size, | |
1438 | hdr->pref_address, | |
1439 | hdr->kernel_alignment); | |
fb86b244 UW |
1440 | if (status != EFI_SUCCESS) { |
1441 | efi_printk(sys_table, "efi_relocate_kernel() failed!\n"); | |
9ca8f72a | 1442 | goto fail; |
fb86b244 | 1443 | } |
4a9f3a7c RF |
1444 | |
1445 | hdr->pref_address = hdr->code32_start; | |
1446 | hdr->code32_start = bzimage_addr; | |
9ca8f72a MF |
1447 | } |
1448 | ||
b8ff87a6 | 1449 | status = exit_boot(boot_params, handle, is64); |
fb86b244 UW |
1450 | if (status != EFI_SUCCESS) { |
1451 | efi_printk(sys_table, "exit_boot() failed!\n"); | |
291f3632 | 1452 | goto fail; |
fb86b244 | 1453 | } |
291f3632 MF |
1454 | |
1455 | memset((char *)gdt->address, 0x0, gdt->size); | |
1456 | desc = (struct desc_struct *)gdt->address; | |
1457 | ||
1458 | /* The first GDT is a dummy and the second is unused. */ | |
1459 | desc += 2; | |
1460 | ||
1461 | desc->limit0 = 0xffff; | |
1462 | desc->base0 = 0x0000; | |
1463 | desc->base1 = 0x0000; | |
1464 | desc->type = SEG_TYPE_CODE | SEG_TYPE_EXEC_READ; | |
1465 | desc->s = DESC_TYPE_CODE_DATA; | |
1466 | desc->dpl = 0; | |
1467 | desc->p = 1; | |
1468 | desc->limit = 0xf; | |
1469 | desc->avl = 0; | |
1470 | desc->l = 0; | |
1471 | desc->d = SEG_OP_SIZE_32BIT; | |
1472 | desc->g = SEG_GRANULARITY_4KB; | |
1473 | desc->base2 = 0x00; | |
1474 | ||
1475 | desc++; | |
1476 | desc->limit0 = 0xffff; | |
1477 | desc->base0 = 0x0000; | |
1478 | desc->base1 = 0x0000; | |
1479 | desc->type = SEG_TYPE_DATA | SEG_TYPE_READ_WRITE; | |
1480 | desc->s = DESC_TYPE_CODE_DATA; | |
1481 | desc->dpl = 0; | |
1482 | desc->p = 1; | |
1483 | desc->limit = 0xf; | |
1484 | desc->avl = 0; | |
1485 | desc->l = 0; | |
1486 | desc->d = SEG_OP_SIZE_32BIT; | |
1487 | desc->g = SEG_GRANULARITY_4KB; | |
1488 | desc->base2 = 0x00; | |
1489 | ||
1490 | #ifdef CONFIG_X86_64 | |
1491 | /* Task segment value */ | |
1492 | desc++; | |
1493 | desc->limit0 = 0x0000; | |
1494 | desc->base0 = 0x0000; | |
1495 | desc->base1 = 0x0000; | |
1496 | desc->type = SEG_TYPE_TSS; | |
1497 | desc->s = 0; | |
1498 | desc->dpl = 0; | |
1499 | desc->p = 1; | |
1500 | desc->limit = 0x0; | |
1501 | desc->avl = 0; | |
1502 | desc->l = 0; | |
1503 | desc->d = 0; | |
1504 | desc->g = SEG_GRANULARITY_4KB; | |
1505 | desc->base2 = 0x00; | |
1506 | #endif /* CONFIG_X86_64 */ | |
1507 | ||
291f3632 | 1508 | asm volatile("cli"); |
0ce6cda2 | 1509 | asm volatile ("lgdt %0" : : "m" (*gdt)); |
291f3632 MF |
1510 | |
1511 | return boot_params; | |
1512 | fail: | |
fb86b244 | 1513 | efi_printk(sys_table, "efi_main() failed!\n"); |
291f3632 MF |
1514 | return NULL; |
1515 | } |