Commit | Line | Data |
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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 | ||
0f905a43 MF |
16 | #undef memcpy /* Use memcpy from misc.c */ |
17 | ||
291f3632 MF |
18 | #include "eboot.h" |
19 | ||
20 | static efi_system_table_t *sys_table; | |
21 | ||
54b52d87 MF |
22 | static struct efi_config *efi_early; |
23 | ||
204b0a1a MF |
24 | #define efi_call_early(f, ...) \ |
25 | efi_early->call(efi_early->f, __VA_ARGS__); | |
26 | ||
54b52d87 MF |
27 | #define BOOT_SERVICES(bits) \ |
28 | static void setup_boot_services##bits(struct efi_config *c) \ | |
29 | { \ | |
30 | efi_system_table_##bits##_t *table; \ | |
31 | efi_boot_services_##bits##_t *bt; \ | |
32 | \ | |
33 | table = (typeof(table))sys_table; \ | |
34 | \ | |
35 | c->text_output = table->con_out; \ | |
36 | \ | |
37 | bt = (typeof(bt))(unsigned long)(table->boottime); \ | |
38 | \ | |
39 | c->allocate_pool = bt->allocate_pool; \ | |
40 | c->allocate_pages = bt->allocate_pages; \ | |
41 | c->get_memory_map = bt->get_memory_map; \ | |
42 | c->free_pool = bt->free_pool; \ | |
43 | c->free_pages = bt->free_pages; \ | |
44 | c->locate_handle = bt->locate_handle; \ | |
45 | c->handle_protocol = bt->handle_protocol; \ | |
46 | c->exit_boot_services = bt->exit_boot_services; \ | |
47 | } | |
48 | BOOT_SERVICES(32); | |
49 | BOOT_SERVICES(64); | |
291f3632 | 50 | |
54b52d87 MF |
51 | static void efi_printk(efi_system_table_t *, char *); |
52 | static void efi_char16_printk(efi_system_table_t *, efi_char16_t *); | |
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; | |
115 | u32 info_sz; | |
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 | } | |
c116e8d6 MF |
159 | static efi_status_t |
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 MF |
168 | |
169 | static inline efi_status_t | |
170 | efi_file_read(void *__fh, void *handle, unsigned long *size, void *addr) | |
171 | { | |
c116e8d6 MF |
172 | unsigned long func; |
173 | ||
174 | if (efi_early->is64) { | |
175 | efi_file_handle_64_t *fh = __fh; | |
176 | ||
177 | func = (unsigned long)fh->read; | |
178 | return efi_early->call(func, handle, size, addr); | |
179 | } else { | |
180 | efi_file_handle_32_t *fh = __fh; | |
181 | ||
182 | func = (unsigned long)fh->read; | |
183 | return efi_early->call(func, handle, size, addr); | |
184 | } | |
54b52d87 MF |
185 | } |
186 | ||
187 | static inline efi_status_t efi_file_close(void *__fh, void *handle) | |
188 | { | |
c116e8d6 MF |
189 | if (efi_early->is64) { |
190 | efi_file_handle_64_t *fh = __fh; | |
191 | ||
192 | return efi_early->call((unsigned long)fh->close, handle); | |
193 | } else { | |
194 | efi_file_handle_32_t *fh = __fh; | |
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 | ||
c116e8d6 MF |
252 | static inline efi_status_t |
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 | ||
261 | static 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; | |
272 | func = (u64 *)output_string; | |
273 | ||
274 | efi_early->call(*func, efi_early->text_output, str); | |
275 | } else { | |
276 | struct efi_simple_text_output_protocol_32 *out; | |
277 | u32 *func; | |
278 | ||
279 | offset = offsetof(typeof(*out), output_string); | |
280 | output_string = efi_early->text_output + offset; | |
281 | func = (u32 *)output_string; | |
282 | ||
283 | efi_early->call(*func, efi_early->text_output, str); | |
284 | } | |
54b52d87 MF |
285 | } |
286 | ||
287 | #include "../../../../drivers/firmware/efi/efi-stub-helper.c" | |
291f3632 MF |
288 | |
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); |
c116e8d6 MF |
332 | if (status != EFI_SUCCESS) |
333 | return status; | |
dd5fc854 | 334 | |
c116e8d6 MF |
335 | memset(rom, 0, sizeof(*rom)); |
336 | ||
337 | rom->data.type = SETUP_PCI; | |
338 | rom->data.len = size - sizeof(struct setup_data); | |
339 | rom->data.next = 0; | |
340 | rom->pcilen = pci->romsize; | |
341 | *__rom = rom; | |
342 | ||
343 | status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, | |
344 | PCI_VENDOR_ID, 1, &(rom->vendor)); | |
dd5fc854 MG |
345 | |
346 | if (status != EFI_SUCCESS) | |
c116e8d6 MF |
347 | goto free_struct; |
348 | ||
349 | status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, | |
350 | PCI_DEVICE_ID, 1, &(rom->devid)); | |
351 | ||
352 | if (status != EFI_SUCCESS) | |
353 | goto free_struct; | |
354 | ||
355 | status = efi_early->call(pci->get_location, pci, &(rom->segment), | |
356 | &(rom->bus), &(rom->device), &(rom->function)); | |
357 | ||
358 | if (status != EFI_SUCCESS) | |
359 | goto free_struct; | |
360 | ||
361 | memcpy(rom->romdata, pci->romimage, pci->romsize); | |
362 | return status; | |
363 | ||
364 | free_struct: | |
204b0a1a | 365 | efi_call_early(free_pool, rom); |
c116e8d6 MF |
366 | return status; |
367 | } | |
368 | ||
369 | static efi_status_t | |
370 | setup_efi_pci32(struct boot_params *params, void **pci_handle, | |
371 | unsigned long size) | |
372 | { | |
373 | efi_pci_io_protocol_32 *pci = NULL; | |
374 | efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
375 | u32 *handles = (u32 *)(unsigned long)pci_handle; | |
376 | efi_status_t status; | |
377 | unsigned long nr_pci; | |
378 | struct setup_data *data; | |
379 | int i; | |
380 | ||
381 | data = (struct setup_data *)(unsigned long)params->hdr.setup_data; | |
382 | ||
383 | while (data && data->next) | |
384 | data = (struct setup_data *)(unsigned long)data->next; | |
dd5fc854 | 385 | |
c116e8d6 | 386 | nr_pci = size / sizeof(u32); |
dd5fc854 | 387 | for (i = 0; i < nr_pci; i++) { |
c116e8d6 MF |
388 | struct pci_setup_rom *rom = NULL; |
389 | u32 h = handles[i]; | |
dd5fc854 | 390 | |
204b0a1a MF |
391 | status = efi_call_early(handle_protocol, h, |
392 | &pci_proto, (void **)&pci); | |
dd5fc854 MG |
393 | |
394 | if (status != EFI_SUCCESS) | |
395 | continue; | |
396 | ||
397 | if (!pci) | |
398 | continue; | |
399 | ||
c116e8d6 | 400 | status = __setup_efi_pci32(pci, &rom); |
dd5fc854 MG |
401 | if (status != EFI_SUCCESS) |
402 | continue; | |
403 | ||
c116e8d6 MF |
404 | if (data) |
405 | data->next = (unsigned long)rom; | |
406 | else | |
407 | params->hdr.setup_data = (unsigned long)rom; | |
408 | ||
409 | data = (struct setup_data *)rom; | |
dd5fc854 | 410 | |
c116e8d6 | 411 | } |
dd5fc854 | 412 | |
c116e8d6 MF |
413 | return status; |
414 | } | |
dd5fc854 | 415 | |
c116e8d6 MF |
416 | static efi_status_t |
417 | __setup_efi_pci64(efi_pci_io_protocol_64 *pci, struct pci_setup_rom **__rom) | |
418 | { | |
419 | struct pci_setup_rom *rom; | |
420 | efi_status_t status; | |
421 | unsigned long size; | |
422 | uint64_t attributes; | |
dd5fc854 | 423 | |
c116e8d6 MF |
424 | status = efi_early->call(pci->attributes, pci, |
425 | EfiPciIoAttributeOperationGet, 0, | |
426 | &attributes); | |
427 | if (status != EFI_SUCCESS) | |
428 | return status; | |
dd5fc854 | 429 | |
c116e8d6 MF |
430 | if (!pci->romimage || !pci->romsize) |
431 | return EFI_INVALID_PARAMETER; | |
dd5fc854 | 432 | |
c116e8d6 | 433 | size = pci->romsize + sizeof(*rom); |
dd5fc854 | 434 | |
204b0a1a | 435 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, &rom); |
c116e8d6 MF |
436 | if (status != EFI_SUCCESS) |
437 | return status; | |
438 | ||
439 | rom->data.type = SETUP_PCI; | |
440 | rom->data.len = size - sizeof(struct setup_data); | |
441 | rom->data.next = 0; | |
442 | rom->pcilen = pci->romsize; | |
443 | *__rom = rom; | |
444 | ||
445 | status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, | |
446 | PCI_VENDOR_ID, 1, &(rom->vendor)); | |
447 | ||
448 | if (status != EFI_SUCCESS) | |
449 | goto free_struct; | |
450 | ||
451 | status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, | |
452 | PCI_DEVICE_ID, 1, &(rom->devid)); | |
453 | ||
454 | if (status != EFI_SUCCESS) | |
455 | goto free_struct; | |
456 | ||
457 | status = efi_early->call(pci->get_location, pci, &(rom->segment), | |
458 | &(rom->bus), &(rom->device), &(rom->function)); | |
459 | ||
460 | if (status != EFI_SUCCESS) | |
461 | goto free_struct; | |
462 | ||
463 | memcpy(rom->romdata, pci->romimage, pci->romsize); | |
464 | return status; | |
465 | ||
466 | free_struct: | |
204b0a1a | 467 | efi_call_early(free_pool, rom); |
c116e8d6 MF |
468 | return status; |
469 | ||
470 | } | |
471 | ||
472 | static efi_status_t | |
473 | setup_efi_pci64(struct boot_params *params, void **pci_handle, | |
474 | unsigned long size) | |
475 | { | |
476 | efi_pci_io_protocol_64 *pci = NULL; | |
477 | efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
478 | u64 *handles = (u64 *)(unsigned long)pci_handle; | |
479 | efi_status_t status; | |
480 | unsigned long nr_pci; | |
481 | struct setup_data *data; | |
482 | int i; | |
dd5fc854 | 483 | |
c116e8d6 MF |
484 | data = (struct setup_data *)(unsigned long)params->hdr.setup_data; |
485 | ||
486 | while (data && data->next) | |
487 | data = (struct setup_data *)(unsigned long)data->next; | |
488 | ||
489 | nr_pci = size / sizeof(u64); | |
490 | for (i = 0; i < nr_pci; i++) { | |
491 | struct pci_setup_rom *rom = NULL; | |
492 | u64 h = handles[i]; | |
493 | ||
204b0a1a MF |
494 | status = efi_call_early(handle_protocol, h, |
495 | &pci_proto, (void **)&pci); | |
dd5fc854 MG |
496 | |
497 | if (status != EFI_SUCCESS) | |
c116e8d6 MF |
498 | continue; |
499 | ||
500 | if (!pci) | |
501 | continue; | |
dd5fc854 | 502 | |
c116e8d6 MF |
503 | status = __setup_efi_pci64(pci, &rom); |
504 | if (status != EFI_SUCCESS) | |
505 | continue; | |
dd5fc854 MG |
506 | |
507 | if (data) | |
bc754790 | 508 | data->next = (unsigned long)rom; |
dd5fc854 | 509 | else |
bc754790 | 510 | params->hdr.setup_data = (unsigned long)rom; |
dd5fc854 MG |
511 | |
512 | data = (struct setup_data *)rom; | |
513 | ||
dd5fc854 MG |
514 | } |
515 | ||
dd5fc854 MG |
516 | return status; |
517 | } | |
518 | ||
c116e8d6 | 519 | static efi_status_t setup_efi_pci(struct boot_params *params) |
291f3632 | 520 | { |
291f3632 | 521 | efi_status_t status; |
c116e8d6 MF |
522 | void **pci_handle = NULL; |
523 | efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
524 | unsigned long size = 0; | |
291f3632 | 525 | |
204b0a1a MF |
526 | status = efi_call_early(locate_handle, |
527 | EFI_LOCATE_BY_PROTOCOL, | |
528 | &pci_proto, NULL, &size, pci_handle); | |
291f3632 | 529 | |
c116e8d6 | 530 | if (status == EFI_BUFFER_TOO_SMALL) { |
204b0a1a MF |
531 | status = efi_call_early(allocate_pool, |
532 | EFI_LOADER_DATA, | |
533 | size, (void **)&pci_handle); | |
291f3632 | 534 | |
291f3632 | 535 | if (status != EFI_SUCCESS) |
c116e8d6 | 536 | return status; |
291f3632 | 537 | |
204b0a1a MF |
538 | status = efi_call_early(locate_handle, |
539 | EFI_LOCATE_BY_PROTOCOL, &pci_proto, | |
540 | NULL, &size, pci_handle); | |
291f3632 MF |
541 | } |
542 | ||
c116e8d6 | 543 | if (status != EFI_SUCCESS) |
291f3632 MF |
544 | goto free_handle; |
545 | ||
c116e8d6 MF |
546 | if (efi_early->is64) |
547 | status = setup_efi_pci64(params, pci_handle, size); | |
548 | else | |
549 | status = setup_efi_pci32(params, pci_handle, size); | |
291f3632 | 550 | |
c116e8d6 | 551 | free_handle: |
204b0a1a | 552 | efi_call_early(free_pool, pci_handle); |
c116e8d6 MF |
553 | return status; |
554 | } | |
291f3632 | 555 | |
c116e8d6 MF |
556 | static void |
557 | setup_pixel_info(struct screen_info *si, u32 pixels_per_scan_line, | |
558 | struct efi_pixel_bitmask pixel_info, int pixel_format) | |
559 | { | |
291f3632 MF |
560 | if (pixel_format == PIXEL_RGB_RESERVED_8BIT_PER_COLOR) { |
561 | si->lfb_depth = 32; | |
562 | si->lfb_linelength = pixels_per_scan_line * 4; | |
563 | si->red_size = 8; | |
564 | si->red_pos = 0; | |
565 | si->green_size = 8; | |
566 | si->green_pos = 8; | |
567 | si->blue_size = 8; | |
568 | si->blue_pos = 16; | |
569 | si->rsvd_size = 8; | |
570 | si->rsvd_pos = 24; | |
571 | } else if (pixel_format == PIXEL_BGR_RESERVED_8BIT_PER_COLOR) { | |
572 | si->lfb_depth = 32; | |
573 | si->lfb_linelength = pixels_per_scan_line * 4; | |
574 | si->red_size = 8; | |
575 | si->red_pos = 16; | |
576 | si->green_size = 8; | |
577 | si->green_pos = 8; | |
578 | si->blue_size = 8; | |
579 | si->blue_pos = 0; | |
580 | si->rsvd_size = 8; | |
581 | si->rsvd_pos = 24; | |
582 | } else if (pixel_format == PIXEL_BIT_MASK) { | |
583 | find_bits(pixel_info.red_mask, &si->red_pos, &si->red_size); | |
584 | find_bits(pixel_info.green_mask, &si->green_pos, | |
585 | &si->green_size); | |
586 | find_bits(pixel_info.blue_mask, &si->blue_pos, &si->blue_size); | |
587 | find_bits(pixel_info.reserved_mask, &si->rsvd_pos, | |
588 | &si->rsvd_size); | |
589 | si->lfb_depth = si->red_size + si->green_size + | |
590 | si->blue_size + si->rsvd_size; | |
591 | si->lfb_linelength = (pixels_per_scan_line * si->lfb_depth) / 8; | |
592 | } else { | |
593 | si->lfb_depth = 4; | |
594 | si->lfb_linelength = si->lfb_width / 2; | |
595 | si->red_size = 0; | |
596 | si->red_pos = 0; | |
597 | si->green_size = 0; | |
598 | si->green_pos = 0; | |
599 | si->blue_size = 0; | |
600 | si->blue_pos = 0; | |
601 | si->rsvd_size = 0; | |
602 | si->rsvd_pos = 0; | |
603 | } | |
c116e8d6 MF |
604 | } |
605 | ||
606 | static efi_status_t | |
607 | __gop_query32(struct efi_graphics_output_protocol_32 *gop32, | |
608 | struct efi_graphics_output_mode_info **info, | |
609 | unsigned long *size, u32 *fb_base) | |
610 | { | |
611 | struct efi_graphics_output_protocol_mode_32 *mode; | |
612 | efi_status_t status; | |
613 | unsigned long m; | |
614 | ||
615 | m = gop32->mode; | |
616 | mode = (struct efi_graphics_output_protocol_mode_32 *)m; | |
617 | ||
618 | status = efi_early->call(gop32->query_mode, gop32, | |
619 | mode->mode, size, info); | |
620 | if (status != EFI_SUCCESS) | |
621 | return status; | |
622 | ||
623 | *fb_base = mode->frame_buffer_base; | |
624 | return status; | |
625 | } | |
626 | ||
627 | static efi_status_t | |
628 | setup_gop32(struct screen_info *si, efi_guid_t *proto, | |
629 | unsigned long size, void **gop_handle) | |
630 | { | |
631 | struct efi_graphics_output_protocol_32 *gop32, *first_gop; | |
632 | unsigned long nr_gops; | |
633 | u16 width, height; | |
634 | u32 pixels_per_scan_line; | |
635 | u32 fb_base; | |
636 | struct efi_pixel_bitmask pixel_info; | |
637 | int pixel_format; | |
638 | efi_status_t status; | |
639 | u32 *handles = (u32 *)(unsigned long)gop_handle; | |
640 | int i; | |
641 | ||
642 | first_gop = NULL; | |
643 | gop32 = NULL; | |
644 | ||
645 | nr_gops = size / sizeof(u32); | |
646 | for (i = 0; i < nr_gops; i++) { | |
647 | struct efi_graphics_output_mode_info *info = NULL; | |
648 | efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID; | |
649 | bool conout_found = false; | |
650 | void *dummy = NULL; | |
651 | u32 h = handles[i]; | |
652 | ||
204b0a1a MF |
653 | status = efi_call_early(handle_protocol, h, |
654 | proto, (void **)&gop32); | |
c116e8d6 MF |
655 | if (status != EFI_SUCCESS) |
656 | continue; | |
657 | ||
204b0a1a MF |
658 | status = efi_call_early(handle_protocol, h, |
659 | &conout_proto, &dummy); | |
c116e8d6 MF |
660 | if (status == EFI_SUCCESS) |
661 | conout_found = true; | |
662 | ||
663 | status = __gop_query32(gop32, &info, &size, &fb_base); | |
664 | if (status == EFI_SUCCESS && (!first_gop || conout_found)) { | |
665 | /* | |
666 | * Systems that use the UEFI Console Splitter may | |
667 | * provide multiple GOP devices, not all of which are | |
668 | * backed by real hardware. The workaround is to search | |
669 | * for a GOP implementing the ConOut protocol, and if | |
670 | * one isn't found, to just fall back to the first GOP. | |
671 | */ | |
672 | width = info->horizontal_resolution; | |
673 | height = info->vertical_resolution; | |
674 | pixel_format = info->pixel_format; | |
675 | pixel_info = info->pixel_information; | |
676 | pixels_per_scan_line = info->pixels_per_scan_line; | |
677 | ||
678 | /* | |
679 | * Once we've found a GOP supporting ConOut, | |
680 | * don't bother looking any further. | |
681 | */ | |
682 | first_gop = gop32; | |
683 | if (conout_found) | |
684 | break; | |
685 | } | |
686 | } | |
687 | ||
688 | /* Did we find any GOPs? */ | |
689 | if (!first_gop) | |
690 | goto out; | |
691 | ||
692 | /* EFI framebuffer */ | |
693 | si->orig_video_isVGA = VIDEO_TYPE_EFI; | |
694 | ||
695 | si->lfb_width = width; | |
696 | si->lfb_height = height; | |
697 | si->lfb_base = fb_base; | |
698 | si->pages = 1; | |
699 | ||
700 | setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format); | |
291f3632 | 701 | |
e9b10953 MG |
702 | si->lfb_size = si->lfb_linelength * si->lfb_height; |
703 | ||
f462ed93 | 704 | si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS; |
c116e8d6 MF |
705 | out: |
706 | return status; | |
707 | } | |
f462ed93 | 708 | |
c116e8d6 MF |
709 | static efi_status_t |
710 | __gop_query64(struct efi_graphics_output_protocol_64 *gop64, | |
711 | struct efi_graphics_output_mode_info **info, | |
712 | unsigned long *size, u32 *fb_base) | |
713 | { | |
714 | struct efi_graphics_output_protocol_mode_64 *mode; | |
715 | efi_status_t status; | |
716 | unsigned long m; | |
717 | ||
718 | m = gop64->mode; | |
719 | mode = (struct efi_graphics_output_protocol_mode_64 *)m; | |
720 | ||
721 | status = efi_early->call(gop64->query_mode, gop64, | |
722 | mode->mode, size, info); | |
723 | if (status != EFI_SUCCESS) | |
724 | return status; | |
725 | ||
726 | *fb_base = mode->frame_buffer_base; | |
727 | return status; | |
728 | } | |
729 | ||
730 | static efi_status_t | |
731 | setup_gop64(struct screen_info *si, efi_guid_t *proto, | |
732 | unsigned long size, void **gop_handle) | |
733 | { | |
734 | struct efi_graphics_output_protocol_64 *gop64, *first_gop; | |
735 | unsigned long nr_gops; | |
736 | u16 width, height; | |
737 | u32 pixels_per_scan_line; | |
738 | u32 fb_base; | |
739 | struct efi_pixel_bitmask pixel_info; | |
740 | int pixel_format; | |
741 | efi_status_t status; | |
742 | u64 *handles = (u64 *)(unsigned long)gop_handle; | |
743 | int i; | |
744 | ||
745 | first_gop = NULL; | |
746 | gop64 = NULL; | |
747 | ||
748 | nr_gops = size / sizeof(u64); | |
749 | for (i = 0; i < nr_gops; i++) { | |
750 | struct efi_graphics_output_mode_info *info = NULL; | |
751 | efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID; | |
752 | bool conout_found = false; | |
753 | void *dummy = NULL; | |
754 | u64 h = handles[i]; | |
755 | ||
204b0a1a MF |
756 | status = efi_call_early(handle_protocol, h, |
757 | proto, (void **)&gop64); | |
c116e8d6 MF |
758 | if (status != EFI_SUCCESS) |
759 | continue; | |
760 | ||
204b0a1a MF |
761 | status = efi_call_early(handle_protocol, h, |
762 | &conout_proto, &dummy); | |
c116e8d6 MF |
763 | if (status == EFI_SUCCESS) |
764 | conout_found = true; | |
765 | ||
766 | status = __gop_query64(gop64, &info, &size, &fb_base); | |
767 | if (status == EFI_SUCCESS && (!first_gop || conout_found)) { | |
768 | /* | |
769 | * Systems that use the UEFI Console Splitter may | |
770 | * provide multiple GOP devices, not all of which are | |
771 | * backed by real hardware. The workaround is to search | |
772 | * for a GOP implementing the ConOut protocol, and if | |
773 | * one isn't found, to just fall back to the first GOP. | |
774 | */ | |
775 | width = info->horizontal_resolution; | |
776 | height = info->vertical_resolution; | |
777 | pixel_format = info->pixel_format; | |
778 | pixel_info = info->pixel_information; | |
779 | pixels_per_scan_line = info->pixels_per_scan_line; | |
780 | ||
781 | /* | |
782 | * Once we've found a GOP supporting ConOut, | |
783 | * don't bother looking any further. | |
784 | */ | |
785 | first_gop = gop64; | |
786 | if (conout_found) | |
787 | break; | |
788 | } | |
789 | } | |
790 | ||
791 | /* Did we find any GOPs? */ | |
792 | if (!first_gop) | |
793 | goto out; | |
794 | ||
795 | /* EFI framebuffer */ | |
796 | si->orig_video_isVGA = VIDEO_TYPE_EFI; | |
797 | ||
798 | si->lfb_width = width; | |
799 | si->lfb_height = height; | |
800 | si->lfb_base = fb_base; | |
801 | si->pages = 1; | |
802 | ||
803 | setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format); | |
804 | ||
805 | si->lfb_size = si->lfb_linelength * si->lfb_height; | |
806 | ||
807 | si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS; | |
808 | out: | |
291f3632 MF |
809 | return status; |
810 | } | |
811 | ||
812 | /* | |
c116e8d6 | 813 | * See if we have Graphics Output Protocol |
291f3632 | 814 | */ |
c116e8d6 | 815 | static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto, |
291f3632 MF |
816 | unsigned long size) |
817 | { | |
291f3632 | 818 | efi_status_t status; |
c116e8d6 | 819 | void **gop_handle = NULL; |
291f3632 | 820 | |
204b0a1a MF |
821 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
822 | size, (void **)&gop_handle); | |
291f3632 MF |
823 | if (status != EFI_SUCCESS) |
824 | return status; | |
825 | ||
204b0a1a MF |
826 | status = efi_call_early(locate_handle, |
827 | EFI_LOCATE_BY_PROTOCOL, | |
828 | proto, NULL, &size, gop_handle); | |
291f3632 MF |
829 | if (status != EFI_SUCCESS) |
830 | goto free_handle; | |
831 | ||
c116e8d6 MF |
832 | if (efi_early->is64) |
833 | status = setup_gop64(si, proto, size, gop_handle); | |
834 | else | |
835 | status = setup_gop32(si, proto, size, gop_handle); | |
836 | ||
837 | free_handle: | |
204b0a1a | 838 | efi_call_early(free_pool, gop_handle); |
c116e8d6 MF |
839 | return status; |
840 | } | |
841 | ||
842 | static efi_status_t | |
843 | setup_uga32(void **uga_handle, unsigned long size, u32 *width, u32 *height) | |
844 | { | |
845 | struct efi_uga_draw_protocol *uga = NULL, *first_uga; | |
846 | efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; | |
847 | unsigned long nr_ugas; | |
848 | u32 *handles = (u32 *)uga_handle;; | |
849 | efi_status_t status; | |
850 | int i; | |
851 | ||
291f3632 | 852 | first_uga = NULL; |
c116e8d6 MF |
853 | nr_ugas = size / sizeof(u32); |
854 | for (i = 0; i < nr_ugas; i++) { | |
855 | efi_guid_t pciio_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
856 | u32 w, h, depth, refresh; | |
857 | void *pciio; | |
858 | u32 handle = handles[i]; | |
859 | ||
204b0a1a MF |
860 | status = efi_call_early(handle_protocol, handle, |
861 | &uga_proto, (void **)&uga); | |
c116e8d6 MF |
862 | if (status != EFI_SUCCESS) |
863 | continue; | |
864 | ||
204b0a1a | 865 | efi_call_early(handle_protocol, handle, &pciio_proto, &pciio); |
c116e8d6 MF |
866 | |
867 | status = efi_early->call((unsigned long)uga->get_mode, uga, | |
868 | &w, &h, &depth, &refresh); | |
869 | if (status == EFI_SUCCESS && (!first_uga || pciio)) { | |
870 | *width = w; | |
871 | *height = h; | |
872 | ||
873 | /* | |
874 | * Once we've found a UGA supporting PCIIO, | |
875 | * don't bother looking any further. | |
876 | */ | |
877 | if (pciio) | |
878 | break; | |
879 | ||
880 | first_uga = uga; | |
881 | } | |
882 | } | |
883 | ||
884 | return status; | |
885 | } | |
291f3632 | 886 | |
c116e8d6 MF |
887 | static efi_status_t |
888 | setup_uga64(void **uga_handle, unsigned long size, u32 *width, u32 *height) | |
889 | { | |
890 | struct efi_uga_draw_protocol *uga = NULL, *first_uga; | |
891 | efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; | |
892 | unsigned long nr_ugas; | |
893 | u64 *handles = (u64 *)uga_handle;; | |
894 | efi_status_t status; | |
895 | int i; | |
896 | ||
897 | first_uga = NULL; | |
898 | nr_ugas = size / sizeof(u64); | |
291f3632 MF |
899 | for (i = 0; i < nr_ugas; i++) { |
900 | efi_guid_t pciio_proto = EFI_PCI_IO_PROTOCOL_GUID; | |
291f3632 MF |
901 | u32 w, h, depth, refresh; |
902 | void *pciio; | |
c116e8d6 | 903 | u64 handle = handles[i]; |
291f3632 | 904 | |
204b0a1a MF |
905 | status = efi_call_early(handle_protocol, handle, |
906 | &uga_proto, (void **)&uga); | |
291f3632 MF |
907 | if (status != EFI_SUCCESS) |
908 | continue; | |
909 | ||
204b0a1a | 910 | efi_call_early(handle_protocol, handle, &pciio_proto, &pciio); |
291f3632 | 911 | |
54b52d87 MF |
912 | status = efi_early->call((unsigned long)uga->get_mode, uga, |
913 | &w, &h, &depth, &refresh); | |
291f3632 | 914 | if (status == EFI_SUCCESS && (!first_uga || pciio)) { |
c116e8d6 MF |
915 | *width = w; |
916 | *height = h; | |
291f3632 MF |
917 | |
918 | /* | |
919 | * Once we've found a UGA supporting PCIIO, | |
920 | * don't bother looking any further. | |
921 | */ | |
922 | if (pciio) | |
923 | break; | |
924 | ||
925 | first_uga = uga; | |
926 | } | |
927 | } | |
928 | ||
c116e8d6 MF |
929 | return status; |
930 | } | |
931 | ||
932 | /* | |
933 | * See if we have Universal Graphics Adapter (UGA) protocol | |
934 | */ | |
935 | static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto, | |
936 | unsigned long size) | |
937 | { | |
938 | efi_status_t status; | |
939 | u32 width, height; | |
940 | void **uga_handle = NULL; | |
941 | ||
204b0a1a MF |
942 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
943 | size, (void **)&uga_handle); | |
c116e8d6 MF |
944 | if (status != EFI_SUCCESS) |
945 | return status; | |
946 | ||
204b0a1a MF |
947 | status = efi_call_early(locate_handle, |
948 | EFI_LOCATE_BY_PROTOCOL, | |
949 | uga_proto, NULL, &size, uga_handle); | |
c116e8d6 MF |
950 | if (status != EFI_SUCCESS) |
951 | goto free_handle; | |
952 | ||
953 | height = 0; | |
954 | width = 0; | |
955 | ||
956 | if (efi_early->is64) | |
957 | status = setup_uga64(uga_handle, size, &width, &height); | |
958 | else | |
959 | status = setup_uga32(uga_handle, size, &width, &height); | |
960 | ||
961 | if (!width && !height) | |
291f3632 MF |
962 | goto free_handle; |
963 | ||
964 | /* EFI framebuffer */ | |
965 | si->orig_video_isVGA = VIDEO_TYPE_EFI; | |
966 | ||
967 | si->lfb_depth = 32; | |
968 | si->lfb_width = width; | |
969 | si->lfb_height = height; | |
970 | ||
971 | si->red_size = 8; | |
972 | si->red_pos = 16; | |
973 | si->green_size = 8; | |
974 | si->green_pos = 8; | |
975 | si->blue_size = 8; | |
976 | si->blue_pos = 0; | |
977 | si->rsvd_size = 8; | |
978 | si->rsvd_pos = 24; | |
979 | ||
291f3632 | 980 | free_handle: |
204b0a1a | 981 | efi_call_early(free_pool, uga_handle); |
291f3632 MF |
982 | return status; |
983 | } | |
984 | ||
985 | void setup_graphics(struct boot_params *boot_params) | |
986 | { | |
987 | efi_guid_t graphics_proto = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; | |
988 | struct screen_info *si; | |
989 | efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; | |
990 | efi_status_t status; | |
991 | unsigned long size; | |
992 | void **gop_handle = NULL; | |
993 | void **uga_handle = NULL; | |
994 | ||
995 | si = &boot_params->screen_info; | |
996 | memset(si, 0, sizeof(*si)); | |
997 | ||
998 | size = 0; | |
204b0a1a MF |
999 | status = efi_call_early(locate_handle, |
1000 | EFI_LOCATE_BY_PROTOCOL, | |
1001 | &graphics_proto, NULL, &size, gop_handle); | |
291f3632 MF |
1002 | if (status == EFI_BUFFER_TOO_SMALL) |
1003 | status = setup_gop(si, &graphics_proto, size); | |
1004 | ||
1005 | if (status != EFI_SUCCESS) { | |
1006 | size = 0; | |
204b0a1a MF |
1007 | status = efi_call_early(locate_handle, |
1008 | EFI_LOCATE_BY_PROTOCOL, | |
1009 | &uga_proto, NULL, &size, uga_handle); | |
291f3632 MF |
1010 | if (status == EFI_BUFFER_TOO_SMALL) |
1011 | setup_uga(si, &uga_proto, size); | |
1012 | } | |
1013 | } | |
1014 | ||
291f3632 MF |
1015 | /* |
1016 | * Because the x86 boot code expects to be passed a boot_params we | |
1017 | * need to create one ourselves (usually the bootloader would create | |
1018 | * one for us). | |
1019 | */ | |
54b52d87 | 1020 | struct boot_params *make_boot_params(struct efi_config *c) |
291f3632 | 1021 | { |
9ca8f72a MF |
1022 | struct boot_params *boot_params; |
1023 | struct sys_desc_table *sdt; | |
1024 | struct apm_bios_info *bi; | |
1025 | struct setup_header *hdr; | |
1026 | struct efi_info *efi; | |
1027 | efi_loaded_image_t *image; | |
54b52d87 | 1028 | void *options, *handle; |
9ca8f72a | 1029 | efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID; |
291f3632 MF |
1030 | int options_size = 0; |
1031 | efi_status_t status; | |
5fef3870 | 1032 | char *cmdline_ptr; |
291f3632 MF |
1033 | u16 *s2; |
1034 | u8 *s1; | |
1035 | int i; | |
46f4582e RF |
1036 | unsigned long ramdisk_addr; |
1037 | unsigned long ramdisk_size; | |
291f3632 | 1038 | |
54b52d87 MF |
1039 | efi_early = c; |
1040 | sys_table = (efi_system_table_t *)(unsigned long)efi_early->table; | |
1041 | handle = (void *)(unsigned long)efi_early->image_handle; | |
9ca8f72a MF |
1042 | |
1043 | /* Check if we were booted by the EFI firmware */ | |
1044 | if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) | |
1045 | return NULL; | |
1046 | ||
54b52d87 MF |
1047 | if (efi_early->is64) |
1048 | setup_boot_services64(efi_early); | |
1049 | else | |
1050 | setup_boot_services32(efi_early); | |
1051 | ||
204b0a1a MF |
1052 | status = efi_call_early(handle_protocol, handle, |
1053 | &proto, (void *)&image); | |
9ca8f72a | 1054 | if (status != EFI_SUCCESS) { |
876dc36a | 1055 | efi_printk(sys_table, "Failed to get handle for LOADED_IMAGE_PROTOCOL\n"); |
9ca8f72a MF |
1056 | return NULL; |
1057 | } | |
1058 | ||
40e4530a RF |
1059 | status = efi_low_alloc(sys_table, 0x4000, 1, |
1060 | (unsigned long *)&boot_params); | |
9ca8f72a | 1061 | if (status != EFI_SUCCESS) { |
876dc36a | 1062 | efi_printk(sys_table, "Failed to alloc lowmem for boot params\n"); |
9ca8f72a MF |
1063 | return NULL; |
1064 | } | |
1065 | ||
1066 | memset(boot_params, 0x0, 0x4000); | |
1067 | ||
1068 | hdr = &boot_params->hdr; | |
1069 | efi = &boot_params->efi_info; | |
1070 | bi = &boot_params->apm_bios_info; | |
1071 | sdt = &boot_params->sys_desc_table; | |
1072 | ||
1073 | /* Copy the second sector to boot_params */ | |
1074 | memcpy(&hdr->jump, image->image_base + 512, 512); | |
1075 | ||
1076 | /* | |
1077 | * Fill out some of the header fields ourselves because the | |
1078 | * EFI firmware loader doesn't load the first sector. | |
1079 | */ | |
1080 | hdr->root_flags = 1; | |
1081 | hdr->vid_mode = 0xffff; | |
1082 | hdr->boot_flag = 0xAA55; | |
1083 | ||
1084 | hdr->code32_start = (__u64)(unsigned long)image->image_base; | |
1085 | ||
291f3632 MF |
1086 | hdr->type_of_loader = 0x21; |
1087 | ||
1088 | /* Convert unicode cmdline to ascii */ | |
5fef3870 RF |
1089 | cmdline_ptr = efi_convert_cmdline_to_ascii(sys_table, image, |
1090 | &options_size); | |
1091 | if (!cmdline_ptr) | |
1092 | goto fail; | |
1093 | hdr->cmd_line_ptr = (unsigned long)cmdline_ptr; | |
291f3632 MF |
1094 | |
1095 | hdr->ramdisk_image = 0; | |
1096 | hdr->ramdisk_size = 0; | |
1097 | ||
291f3632 MF |
1098 | /* Clear APM BIOS info */ |
1099 | memset(bi, 0, sizeof(*bi)); | |
1100 | ||
1101 | memset(sdt, 0, sizeof(*sdt)); | |
1102 | ||
46f4582e RF |
1103 | status = handle_cmdline_files(sys_table, image, |
1104 | (char *)(unsigned long)hdr->cmd_line_ptr, | |
1105 | "initrd=", hdr->initrd_addr_max, | |
1106 | &ramdisk_addr, &ramdisk_size); | |
9ca8f72a MF |
1107 | if (status != EFI_SUCCESS) |
1108 | goto fail2; | |
46f4582e RF |
1109 | hdr->ramdisk_image = ramdisk_addr; |
1110 | hdr->ramdisk_size = ramdisk_size; | |
9ca8f72a MF |
1111 | |
1112 | return boot_params; | |
1113 | fail2: | |
0e1cadb0 | 1114 | efi_free(sys_table, options_size, hdr->cmd_line_ptr); |
9ca8f72a | 1115 | fail: |
40e4530a | 1116 | efi_free(sys_table, 0x4000, (unsigned long)boot_params); |
9ca8f72a MF |
1117 | return NULL; |
1118 | } | |
1119 | ||
d2078d5a LC |
1120 | static void add_e820ext(struct boot_params *params, |
1121 | struct setup_data *e820ext, u32 nr_entries) | |
9ca8f72a | 1122 | { |
d2078d5a | 1123 | struct setup_data *data; |
9ca8f72a | 1124 | efi_status_t status; |
d2078d5a | 1125 | unsigned long size; |
291f3632 | 1126 | |
d2078d5a LC |
1127 | e820ext->type = SETUP_E820_EXT; |
1128 | e820ext->len = nr_entries * sizeof(struct e820entry); | |
1129 | e820ext->next = 0; | |
291f3632 | 1130 | |
d2078d5a | 1131 | data = (struct setup_data *)(unsigned long)params->hdr.setup_data; |
291f3632 | 1132 | |
d2078d5a LC |
1133 | while (data && data->next) |
1134 | data = (struct setup_data *)(unsigned long)data->next; | |
d3768d88 | 1135 | |
d2078d5a LC |
1136 | if (data) |
1137 | data->next = (unsigned long)e820ext; | |
1138 | else | |
1139 | params->hdr.setup_data = (unsigned long)e820ext; | |
1140 | } | |
291f3632 | 1141 | |
d2078d5a LC |
1142 | static efi_status_t setup_e820(struct boot_params *params, |
1143 | struct setup_data *e820ext, u32 e820ext_size) | |
1144 | { | |
1145 | struct e820entry *e820_map = ¶ms->e820_map[0]; | |
1146 | struct efi_info *efi = ¶ms->efi_info; | |
1147 | struct e820entry *prev = NULL; | |
1148 | u32 nr_entries; | |
1149 | u32 nr_desc; | |
1150 | int i; | |
291f3632 | 1151 | |
291f3632 | 1152 | nr_entries = 0; |
d2078d5a LC |
1153 | nr_desc = efi->efi_memmap_size / efi->efi_memdesc_size; |
1154 | ||
1155 | for (i = 0; i < nr_desc; i++) { | |
291f3632 MF |
1156 | efi_memory_desc_t *d; |
1157 | unsigned int e820_type = 0; | |
d2078d5a | 1158 | unsigned long m = efi->efi_memmap; |
291f3632 | 1159 | |
d2078d5a | 1160 | d = (efi_memory_desc_t *)(m + (i * efi->efi_memdesc_size)); |
291f3632 MF |
1161 | switch (d->type) { |
1162 | case EFI_RESERVED_TYPE: | |
1163 | case EFI_RUNTIME_SERVICES_CODE: | |
1164 | case EFI_RUNTIME_SERVICES_DATA: | |
1165 | case EFI_MEMORY_MAPPED_IO: | |
1166 | case EFI_MEMORY_MAPPED_IO_PORT_SPACE: | |
1167 | case EFI_PAL_CODE: | |
1168 | e820_type = E820_RESERVED; | |
1169 | break; | |
1170 | ||
1171 | case EFI_UNUSABLE_MEMORY: | |
1172 | e820_type = E820_UNUSABLE; | |
1173 | break; | |
1174 | ||
1175 | case EFI_ACPI_RECLAIM_MEMORY: | |
1176 | e820_type = E820_ACPI; | |
1177 | break; | |
1178 | ||
1179 | case EFI_LOADER_CODE: | |
1180 | case EFI_LOADER_DATA: | |
1181 | case EFI_BOOT_SERVICES_CODE: | |
1182 | case EFI_BOOT_SERVICES_DATA: | |
1183 | case EFI_CONVENTIONAL_MEMORY: | |
1184 | e820_type = E820_RAM; | |
1185 | break; | |
1186 | ||
1187 | case EFI_ACPI_MEMORY_NVS: | |
1188 | e820_type = E820_NVS; | |
1189 | break; | |
1190 | ||
1191 | default: | |
1192 | continue; | |
1193 | } | |
1194 | ||
1195 | /* Merge adjacent mappings */ | |
1196 | if (prev && prev->type == e820_type && | |
d2078d5a | 1197 | (prev->addr + prev->size) == d->phys_addr) { |
291f3632 | 1198 | prev->size += d->num_pages << 12; |
d2078d5a | 1199 | continue; |
291f3632 | 1200 | } |
d2078d5a LC |
1201 | |
1202 | if (nr_entries == ARRAY_SIZE(params->e820_map)) { | |
1203 | u32 need = (nr_desc - i) * sizeof(struct e820entry) + | |
1204 | sizeof(struct setup_data); | |
1205 | ||
1206 | if (!e820ext || e820ext_size < need) | |
1207 | return EFI_BUFFER_TOO_SMALL; | |
1208 | ||
1209 | /* boot_params map full, switch to e820 extended */ | |
1210 | e820_map = (struct e820entry *)e820ext->data; | |
1211 | } | |
1212 | ||
1213 | e820_map->addr = d->phys_addr; | |
1214 | e820_map->size = d->num_pages << PAGE_SHIFT; | |
1215 | e820_map->type = e820_type; | |
1216 | prev = e820_map++; | |
1217 | nr_entries++; | |
291f3632 MF |
1218 | } |
1219 | ||
d2078d5a LC |
1220 | if (nr_entries > ARRAY_SIZE(params->e820_map)) { |
1221 | u32 nr_e820ext = nr_entries - ARRAY_SIZE(params->e820_map); | |
1222 | ||
1223 | add_e820ext(params, e820ext, nr_e820ext); | |
1224 | nr_entries -= nr_e820ext; | |
1225 | } | |
1226 | ||
1227 | params->e820_entries = (u8)nr_entries; | |
1228 | ||
1229 | return EFI_SUCCESS; | |
1230 | } | |
1231 | ||
1232 | static efi_status_t alloc_e820ext(u32 nr_desc, struct setup_data **e820ext, | |
1233 | u32 *e820ext_size) | |
1234 | { | |
1235 | efi_status_t status; | |
1236 | unsigned long size; | |
1237 | ||
1238 | size = sizeof(struct setup_data) + | |
1239 | sizeof(struct e820entry) * nr_desc; | |
1240 | ||
1241 | if (*e820ext) { | |
204b0a1a | 1242 | efi_call_early(free_pool, *e820ext); |
d2078d5a LC |
1243 | *e820ext = NULL; |
1244 | *e820ext_size = 0; | |
1245 | } | |
1246 | ||
204b0a1a MF |
1247 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
1248 | size, (void **)e820ext); | |
d2078d5a LC |
1249 | if (status == EFI_SUCCESS) |
1250 | *e820ext_size = size; | |
1251 | ||
1252 | return status; | |
1253 | } | |
1254 | ||
1255 | static efi_status_t exit_boot(struct boot_params *boot_params, | |
b8ff87a6 | 1256 | void *handle, bool is64) |
d2078d5a LC |
1257 | { |
1258 | struct efi_info *efi = &boot_params->efi_info; | |
1259 | unsigned long map_sz, key, desc_size; | |
1260 | efi_memory_desc_t *mem_map; | |
1261 | struct setup_data *e820ext; | |
b8ff87a6 | 1262 | const char *signature; |
d2078d5a LC |
1263 | __u32 e820ext_size; |
1264 | __u32 nr_desc, prev_nr_desc; | |
1265 | efi_status_t status; | |
1266 | __u32 desc_version; | |
1267 | bool called_exit = false; | |
1268 | u8 nr_entries; | |
1269 | int i; | |
1270 | ||
1271 | nr_desc = 0; | |
1272 | e820ext = NULL; | |
1273 | e820ext_size = 0; | |
1274 | ||
1275 | get_map: | |
1276 | status = efi_get_memory_map(sys_table, &mem_map, &map_sz, &desc_size, | |
1277 | &desc_version, &key); | |
1278 | ||
1279 | if (status != EFI_SUCCESS) | |
1280 | return status; | |
1281 | ||
1282 | prev_nr_desc = nr_desc; | |
1283 | nr_desc = map_sz / desc_size; | |
1284 | if (nr_desc > prev_nr_desc && | |
1285 | nr_desc > ARRAY_SIZE(boot_params->e820_map)) { | |
1286 | u32 nr_e820ext = nr_desc - ARRAY_SIZE(boot_params->e820_map); | |
1287 | ||
1288 | status = alloc_e820ext(nr_e820ext, &e820ext, &e820ext_size); | |
1289 | if (status != EFI_SUCCESS) | |
1290 | goto free_mem_map; | |
1291 | ||
204b0a1a | 1292 | efi_call_early(free_pool, mem_map); |
d2078d5a LC |
1293 | goto get_map; /* Allocated memory, get map again */ |
1294 | } | |
1295 | ||
b8ff87a6 MF |
1296 | signature = is64 ? EFI64_LOADER_SIGNATURE : EFI32_LOADER_SIGNATURE; |
1297 | memcpy(&efi->efi_loader_signature, signature, sizeof(__u32)); | |
1298 | ||
d2078d5a LC |
1299 | efi->efi_systab = (unsigned long)sys_table; |
1300 | efi->efi_memdesc_size = desc_size; | |
1301 | efi->efi_memdesc_version = desc_version; | |
1302 | efi->efi_memmap = (unsigned long)mem_map; | |
1303 | efi->efi_memmap_size = map_sz; | |
1304 | ||
1305 | #ifdef CONFIG_X86_64 | |
1306 | efi->efi_systab_hi = (unsigned long)sys_table >> 32; | |
1307 | efi->efi_memmap_hi = (unsigned long)mem_map >> 32; | |
1308 | #endif | |
1309 | ||
1310 | /* Might as well exit boot services now */ | |
204b0a1a | 1311 | status = efi_call_early(exit_boot_services, handle, key); |
d2078d5a LC |
1312 | if (status != EFI_SUCCESS) { |
1313 | /* | |
1314 | * ExitBootServices() will fail if any of the event | |
1315 | * handlers change the memory map. In which case, we | |
1316 | * must be prepared to retry, but only once so that | |
1317 | * we're guaranteed to exit on repeated failures instead | |
1318 | * of spinning forever. | |
1319 | */ | |
1320 | if (called_exit) | |
1321 | goto free_mem_map; | |
1322 | ||
1323 | called_exit = true; | |
204b0a1a | 1324 | efi_call_early(free_pool, mem_map); |
d2078d5a LC |
1325 | goto get_map; |
1326 | } | |
1327 | ||
1328 | /* Historic? */ | |
1329 | boot_params->alt_mem_k = 32 * 1024; | |
1330 | ||
1331 | status = setup_e820(boot_params, e820ext, e820ext_size); | |
1332 | if (status != EFI_SUCCESS) | |
1333 | return status; | |
291f3632 MF |
1334 | |
1335 | return EFI_SUCCESS; | |
1336 | ||
1337 | free_mem_map: | |
204b0a1a | 1338 | efi_call_early(free_pool, mem_map); |
291f3632 MF |
1339 | return status; |
1340 | } | |
1341 | ||
9ca8f72a MF |
1342 | /* |
1343 | * On success we return a pointer to a boot_params structure, and NULL | |
1344 | * on failure. | |
1345 | */ | |
54b52d87 | 1346 | struct boot_params *efi_main(struct efi_config *c, |
9ca8f72a MF |
1347 | struct boot_params *boot_params) |
1348 | { | |
54b52d87 | 1349 | struct desc_ptr *gdt = NULL; |
9ca8f72a MF |
1350 | efi_loaded_image_t *image; |
1351 | struct setup_header *hdr = &boot_params->hdr; | |
1352 | efi_status_t status; | |
1353 | struct desc_struct *desc; | |
54b52d87 MF |
1354 | void *handle; |
1355 | efi_system_table_t *_table; | |
1356 | bool is64; | |
1357 | ||
1358 | efi_early = c; | |
1359 | ||
1360 | _table = (efi_system_table_t *)(unsigned long)efi_early->table; | |
1361 | handle = (void *)(unsigned long)efi_early->image_handle; | |
1362 | is64 = efi_early->is64; | |
9ca8f72a MF |
1363 | |
1364 | sys_table = _table; | |
1365 | ||
1366 | /* Check if we were booted by the EFI firmware */ | |
1367 | if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) | |
1368 | goto fail; | |
1369 | ||
54b52d87 MF |
1370 | if (is64) |
1371 | setup_boot_services64(efi_early); | |
1372 | else | |
1373 | setup_boot_services32(efi_early); | |
1374 | ||
9ca8f72a | 1375 | setup_graphics(boot_params); |
291f3632 | 1376 | |
dd5fc854 MG |
1377 | setup_efi_pci(boot_params); |
1378 | ||
204b0a1a MF |
1379 | status = efi_call_early(allocate_pool, EFI_LOADER_DATA, |
1380 | sizeof(*gdt), (void **)&gdt); | |
9fa7deda | 1381 | if (status != EFI_SUCCESS) { |
876dc36a | 1382 | efi_printk(sys_table, "Failed to alloc mem for gdt structure\n"); |
291f3632 | 1383 | goto fail; |
9fa7deda | 1384 | } |
291f3632 MF |
1385 | |
1386 | gdt->size = 0x800; | |
40e4530a | 1387 | status = efi_low_alloc(sys_table, gdt->size, 8, |
876dc36a | 1388 | (unsigned long *)&gdt->address); |
9fa7deda | 1389 | if (status != EFI_SUCCESS) { |
876dc36a | 1390 | efi_printk(sys_table, "Failed to alloc mem for gdt\n"); |
291f3632 | 1391 | goto fail; |
9fa7deda | 1392 | } |
291f3632 | 1393 | |
9ca8f72a MF |
1394 | /* |
1395 | * If the kernel isn't already loaded at the preferred load | |
1396 | * address, relocate it. | |
1397 | */ | |
1398 | if (hdr->pref_address != hdr->code32_start) { | |
4a9f3a7c RF |
1399 | unsigned long bzimage_addr = hdr->code32_start; |
1400 | status = efi_relocate_kernel(sys_table, &bzimage_addr, | |
1401 | hdr->init_size, hdr->init_size, | |
1402 | hdr->pref_address, | |
1403 | hdr->kernel_alignment); | |
9ca8f72a MF |
1404 | if (status != EFI_SUCCESS) |
1405 | goto fail; | |
4a9f3a7c RF |
1406 | |
1407 | hdr->pref_address = hdr->code32_start; | |
1408 | hdr->code32_start = bzimage_addr; | |
9ca8f72a MF |
1409 | } |
1410 | ||
b8ff87a6 | 1411 | status = exit_boot(boot_params, handle, is64); |
291f3632 MF |
1412 | if (status != EFI_SUCCESS) |
1413 | goto fail; | |
1414 | ||
1415 | memset((char *)gdt->address, 0x0, gdt->size); | |
1416 | desc = (struct desc_struct *)gdt->address; | |
1417 | ||
1418 | /* The first GDT is a dummy and the second is unused. */ | |
1419 | desc += 2; | |
1420 | ||
1421 | desc->limit0 = 0xffff; | |
1422 | desc->base0 = 0x0000; | |
1423 | desc->base1 = 0x0000; | |
1424 | desc->type = SEG_TYPE_CODE | SEG_TYPE_EXEC_READ; | |
1425 | desc->s = DESC_TYPE_CODE_DATA; | |
1426 | desc->dpl = 0; | |
1427 | desc->p = 1; | |
1428 | desc->limit = 0xf; | |
1429 | desc->avl = 0; | |
1430 | desc->l = 0; | |
1431 | desc->d = SEG_OP_SIZE_32BIT; | |
1432 | desc->g = SEG_GRANULARITY_4KB; | |
1433 | desc->base2 = 0x00; | |
1434 | ||
1435 | desc++; | |
1436 | desc->limit0 = 0xffff; | |
1437 | desc->base0 = 0x0000; | |
1438 | desc->base1 = 0x0000; | |
1439 | desc->type = SEG_TYPE_DATA | SEG_TYPE_READ_WRITE; | |
1440 | desc->s = DESC_TYPE_CODE_DATA; | |
1441 | desc->dpl = 0; | |
1442 | desc->p = 1; | |
1443 | desc->limit = 0xf; | |
1444 | desc->avl = 0; | |
1445 | desc->l = 0; | |
1446 | desc->d = SEG_OP_SIZE_32BIT; | |
1447 | desc->g = SEG_GRANULARITY_4KB; | |
1448 | desc->base2 = 0x00; | |
1449 | ||
1450 | #ifdef CONFIG_X86_64 | |
1451 | /* Task segment value */ | |
1452 | desc++; | |
1453 | desc->limit0 = 0x0000; | |
1454 | desc->base0 = 0x0000; | |
1455 | desc->base1 = 0x0000; | |
1456 | desc->type = SEG_TYPE_TSS; | |
1457 | desc->s = 0; | |
1458 | desc->dpl = 0; | |
1459 | desc->p = 1; | |
1460 | desc->limit = 0x0; | |
1461 | desc->avl = 0; | |
1462 | desc->l = 0; | |
1463 | desc->d = 0; | |
1464 | desc->g = SEG_GRANULARITY_4KB; | |
1465 | desc->base2 = 0x00; | |
1466 | #endif /* CONFIG_X86_64 */ | |
1467 | ||
291f3632 | 1468 | asm volatile("cli"); |
0ce6cda2 | 1469 | asm volatile ("lgdt %0" : : "m" (*gdt)); |
291f3632 MF |
1470 | |
1471 | return boot_params; | |
1472 | fail: | |
1473 | return NULL; | |
1474 | } |