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1 | /* | |
2 | * GRUB -- GRand Unified Bootloader | |
3 | * Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc. | |
4 | * | |
5 | * GRUB is free software: you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation, either version 3 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * GRUB is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with GRUB. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #include <grub/loader.h> | |
20 | #include <grub/memory.h> | |
21 | #include <grub/normal.h> | |
22 | #include <grub/file.h> | |
23 | #include <grub/disk.h> | |
24 | #include <grub/err.h> | |
25 | #include <grub/misc.h> | |
26 | #include <grub/types.h> | |
27 | #include <grub/dl.h> | |
28 | #include <grub/mm.h> | |
29 | #include <grub/term.h> | |
30 | #include <grub/cpu/linux.h> | |
31 | #include <grub/video.h> | |
32 | #include <grub/video_fb.h> | |
33 | #include <grub/command.h> | |
34 | #include <grub/i386/relocator.h> | |
35 | #include <grub/i18n.h> | |
36 | #include <grub/lib/cmdline.h> | |
37 | #include <grub/linux.h> | |
38 | ||
39 | GRUB_MOD_LICENSE ("GPLv3+"); | |
40 | ||
41 | #ifdef GRUB_MACHINE_PCBIOS | |
42 | #include <grub/i386/pc/vesa_modes_table.h> | |
43 | #endif | |
44 | ||
45 | #ifdef GRUB_MACHINE_EFI | |
46 | #include <grub/efi/efi.h> | |
47 | #define HAS_VGA_TEXT 0 | |
48 | #define DEFAULT_VIDEO_MODE "auto" | |
49 | #define ACCEPTS_PURE_TEXT 0 | |
50 | #elif defined (GRUB_MACHINE_IEEE1275) | |
51 | #include <grub/ieee1275/ieee1275.h> | |
52 | #define HAS_VGA_TEXT 0 | |
53 | #define DEFAULT_VIDEO_MODE "text" | |
54 | #define ACCEPTS_PURE_TEXT 1 | |
55 | #else | |
56 | #include <grub/i386/pc/vbe.h> | |
57 | #include <grub/i386/pc/console.h> | |
58 | #define HAS_VGA_TEXT 1 | |
59 | #define DEFAULT_VIDEO_MODE "text" | |
60 | #define ACCEPTS_PURE_TEXT 1 | |
61 | #endif | |
62 | ||
63 | static grub_dl_t my_mod; | |
64 | ||
65 | static grub_size_t linux_mem_size; | |
66 | static int loaded; | |
67 | static void *prot_mode_mem; | |
68 | static grub_addr_t prot_mode_target; | |
69 | static void *initrd_mem; | |
70 | static grub_addr_t initrd_mem_target; | |
71 | static grub_size_t prot_init_space; | |
72 | static grub_uint32_t initrd_pages; | |
73 | static struct grub_relocator *relocator = NULL; | |
74 | static void *efi_mmap_buf; | |
75 | static grub_size_t maximal_cmdline_size; | |
76 | static struct linux_kernel_params linux_params; | |
77 | static char *linux_cmdline; | |
78 | #ifdef GRUB_MACHINE_EFI | |
79 | static grub_efi_uintn_t efi_mmap_size; | |
80 | #else | |
81 | static const grub_size_t efi_mmap_size = 0; | |
82 | #endif | |
83 | ||
84 | /* FIXME */ | |
85 | #if 0 | |
86 | struct idt_descriptor | |
87 | { | |
88 | grub_uint16_t limit; | |
89 | void *base; | |
90 | } GRUB_PACKED; | |
91 | ||
92 | static struct idt_descriptor idt_desc = | |
93 | { | |
94 | 0, | |
95 | 0 | |
96 | }; | |
97 | #endif | |
98 | ||
99 | static inline grub_size_t | |
100 | page_align (grub_size_t size) | |
101 | { | |
102 | return (size + (1 << 12) - 1) & (~((1 << 12) - 1)); | |
103 | } | |
104 | ||
105 | #ifdef GRUB_MACHINE_EFI | |
106 | /* Find the optimal number of pages for the memory map. Is it better to | |
107 | move this code to efi/mm.c? */ | |
108 | static grub_efi_uintn_t | |
109 | find_efi_mmap_size (void) | |
110 | { | |
111 | static grub_efi_uintn_t mmap_size = 0; | |
112 | ||
113 | if (mmap_size != 0) | |
114 | return mmap_size; | |
115 | ||
116 | mmap_size = (1 << 12); | |
117 | while (1) | |
118 | { | |
119 | int ret; | |
120 | grub_efi_memory_descriptor_t *mmap; | |
121 | grub_efi_uintn_t desc_size; | |
122 | grub_efi_uintn_t cur_mmap_size = mmap_size; | |
123 | ||
124 | mmap = grub_malloc (cur_mmap_size); | |
125 | if (! mmap) | |
126 | return 0; | |
127 | ||
128 | ret = grub_efi_get_memory_map (&cur_mmap_size, mmap, 0, &desc_size, 0); | |
129 | grub_free (mmap); | |
130 | ||
131 | if (ret < 0) | |
132 | { | |
133 | grub_error (GRUB_ERR_IO, "cannot get memory map"); | |
134 | return 0; | |
135 | } | |
136 | else if (ret > 0) | |
137 | break; | |
138 | ||
139 | if (mmap_size < cur_mmap_size) | |
140 | mmap_size = cur_mmap_size; | |
141 | mmap_size += (1 << 12); | |
142 | } | |
143 | ||
144 | /* Increase the size a bit for safety, because GRUB allocates more on | |
145 | later, and EFI itself may allocate more. */ | |
146 | mmap_size += (3 << 12); | |
147 | ||
148 | mmap_size = page_align (mmap_size); | |
149 | return mmap_size; | |
150 | } | |
151 | ||
152 | #endif | |
153 | ||
154 | /* Helper for find_mmap_size. */ | |
155 | static int | |
156 | count_hook (grub_uint64_t addr __attribute__ ((unused)), | |
157 | grub_uint64_t size __attribute__ ((unused)), | |
158 | grub_memory_type_t type __attribute__ ((unused)), void *data) | |
159 | { | |
160 | grub_size_t *count = data; | |
161 | ||
162 | (*count)++; | |
163 | return 0; | |
164 | } | |
165 | ||
166 | /* Find the optimal number of pages for the memory map. */ | |
167 | static grub_size_t | |
168 | find_mmap_size (void) | |
169 | { | |
170 | grub_size_t count = 0, mmap_size; | |
171 | ||
172 | grub_mmap_iterate (count_hook, &count); | |
173 | ||
174 | mmap_size = count * sizeof (struct grub_e820_mmap); | |
175 | ||
176 | /* Increase the size a bit for safety, because GRUB allocates more on | |
177 | later. */ | |
178 | mmap_size += (1 << 12); | |
179 | ||
180 | return page_align (mmap_size); | |
181 | } | |
182 | ||
183 | static void | |
184 | free_pages (void) | |
185 | { | |
186 | grub_relocator_unload (relocator); | |
187 | relocator = NULL; | |
188 | prot_mode_mem = initrd_mem = 0; | |
189 | prot_mode_target = initrd_mem_target = 0; | |
190 | } | |
191 | ||
192 | /* Allocate pages for the real mode code and the protected mode code | |
193 | for linux as well as a memory map buffer. */ | |
194 | static grub_err_t | |
195 | allocate_pages (grub_size_t prot_size, grub_size_t *align, | |
196 | grub_size_t min_align, int relocatable, | |
197 | grub_uint64_t preferred_address) | |
198 | { | |
199 | grub_err_t err; | |
200 | ||
201 | if (prot_size == 0) | |
202 | prot_size = 1; | |
203 | ||
204 | prot_size = page_align (prot_size); | |
205 | ||
206 | /* Initialize the memory pointers with NULL for convenience. */ | |
207 | free_pages (); | |
208 | ||
209 | relocator = grub_relocator_new (); | |
210 | if (!relocator) | |
211 | { | |
212 | err = grub_errno; | |
213 | goto fail; | |
214 | } | |
215 | ||
216 | /* FIXME: Should request low memory from the heap when this feature is | |
217 | implemented. */ | |
218 | ||
219 | { | |
220 | grub_relocator_chunk_t ch; | |
221 | if (relocatable) | |
222 | { | |
223 | err = grub_relocator_alloc_chunk_align (relocator, &ch, | |
224 | preferred_address, | |
225 | preferred_address, | |
226 | prot_size, 1, | |
227 | GRUB_RELOCATOR_PREFERENCE_LOW, | |
228 | 1); | |
229 | for (; err && *align + 1 > min_align; (*align)--) | |
230 | { | |
231 | grub_errno = GRUB_ERR_NONE; | |
232 | err = grub_relocator_alloc_chunk_align (relocator, &ch, | |
233 | 0x1000000, | |
234 | 0xffffffff & ~prot_size, | |
235 | prot_size, 1 << *align, | |
236 | GRUB_RELOCATOR_PREFERENCE_LOW, | |
237 | 1); | |
238 | } | |
239 | if (err) | |
240 | goto fail; | |
241 | } | |
242 | else | |
243 | err = grub_relocator_alloc_chunk_addr (relocator, &ch, | |
244 | preferred_address, | |
245 | prot_size); | |
246 | if (err) | |
247 | goto fail; | |
248 | prot_mode_mem = get_virtual_current_address (ch); | |
249 | prot_mode_target = get_physical_target_address (ch); | |
250 | } | |
251 | ||
252 | grub_dprintf ("linux", "prot_mode_mem = %p, prot_mode_target = %lx, prot_size = %x\n", | |
253 | prot_mode_mem, (unsigned long) prot_mode_target, | |
254 | (unsigned) prot_size); | |
255 | return GRUB_ERR_NONE; | |
256 | ||
257 | fail: | |
258 | free_pages (); | |
259 | return err; | |
260 | } | |
261 | ||
262 | static grub_err_t | |
263 | grub_e820_add_region (struct grub_e820_mmap *e820_map, int *e820_num, | |
264 | grub_uint64_t start, grub_uint64_t size, | |
265 | grub_uint32_t type) | |
266 | { | |
267 | int n = *e820_num; | |
268 | ||
269 | if ((n > 0) && (e820_map[n - 1].addr + e820_map[n - 1].size == start) && | |
270 | (e820_map[n - 1].type == type)) | |
271 | e820_map[n - 1].size += size; | |
272 | else | |
273 | { | |
274 | e820_map[n].addr = start; | |
275 | e820_map[n].size = size; | |
276 | e820_map[n].type = type; | |
277 | (*e820_num)++; | |
278 | } | |
279 | return GRUB_ERR_NONE; | |
280 | } | |
281 | ||
282 | static grub_err_t | |
283 | grub_linux_setup_video (struct linux_kernel_params *params) | |
284 | { | |
285 | struct grub_video_mode_info mode_info; | |
286 | void *framebuffer; | |
287 | grub_err_t err; | |
288 | grub_video_driver_id_t driver_id; | |
289 | const char *gfxlfbvar = grub_env_get ("gfxpayloadforcelfb"); | |
290 | ||
291 | driver_id = grub_video_get_driver_id (); | |
292 | ||
293 | if (driver_id == GRUB_VIDEO_DRIVER_NONE) | |
294 | return 1; | |
295 | ||
296 | err = grub_video_get_info_and_fini (&mode_info, &framebuffer); | |
297 | ||
298 | if (err) | |
299 | { | |
300 | grub_errno = GRUB_ERR_NONE; | |
301 | return 1; | |
302 | } | |
303 | ||
304 | params->lfb_width = mode_info.width; | |
305 | params->lfb_height = mode_info.height; | |
306 | params->lfb_depth = mode_info.bpp; | |
307 | params->lfb_line_len = mode_info.pitch; | |
308 | ||
309 | params->lfb_base = (grub_size_t) framebuffer; | |
310 | params->lfb_size = ALIGN_UP (params->lfb_line_len * params->lfb_height, 65536); | |
311 | ||
312 | params->red_mask_size = mode_info.red_mask_size; | |
313 | params->red_field_pos = mode_info.red_field_pos; | |
314 | params->green_mask_size = mode_info.green_mask_size; | |
315 | params->green_field_pos = mode_info.green_field_pos; | |
316 | params->blue_mask_size = mode_info.blue_mask_size; | |
317 | params->blue_field_pos = mode_info.blue_field_pos; | |
318 | params->reserved_mask_size = mode_info.reserved_mask_size; | |
319 | params->reserved_field_pos = mode_info.reserved_field_pos; | |
320 | ||
321 | if (gfxlfbvar && (gfxlfbvar[0] == '1' || gfxlfbvar[0] == 'y')) | |
322 | params->have_vga = GRUB_VIDEO_LINUX_TYPE_SIMPLE; | |
323 | else | |
324 | { | |
325 | switch (driver_id) | |
326 | { | |
327 | case GRUB_VIDEO_DRIVER_VBE: | |
328 | params->lfb_size >>= 16; | |
329 | params->have_vga = GRUB_VIDEO_LINUX_TYPE_VESA; | |
330 | break; | |
331 | ||
332 | case GRUB_VIDEO_DRIVER_EFI_UGA: | |
333 | case GRUB_VIDEO_DRIVER_EFI_GOP: | |
334 | params->have_vga = GRUB_VIDEO_LINUX_TYPE_EFIFB; | |
335 | break; | |
336 | ||
337 | /* FIXME: check if better id is available. */ | |
338 | case GRUB_VIDEO_DRIVER_SM712: | |
339 | case GRUB_VIDEO_DRIVER_SIS315PRO: | |
340 | case GRUB_VIDEO_DRIVER_VGA: | |
341 | case GRUB_VIDEO_DRIVER_CIRRUS: | |
342 | case GRUB_VIDEO_DRIVER_BOCHS: | |
343 | case GRUB_VIDEO_DRIVER_RADEON_FULOONG2E: | |
344 | case GRUB_VIDEO_DRIVER_RADEON_YEELOONG3A: | |
345 | case GRUB_VIDEO_DRIVER_IEEE1275: | |
346 | case GRUB_VIDEO_DRIVER_COREBOOT: | |
347 | /* Make gcc happy. */ | |
348 | case GRUB_VIDEO_DRIVER_XEN: | |
349 | case GRUB_VIDEO_DRIVER_SDL: | |
350 | case GRUB_VIDEO_DRIVER_NONE: | |
351 | case GRUB_VIDEO_ADAPTER_CAPTURE: | |
352 | params->have_vga = GRUB_VIDEO_LINUX_TYPE_SIMPLE; | |
353 | break; | |
354 | } | |
355 | } | |
356 | ||
357 | #ifdef GRUB_MACHINE_PCBIOS | |
358 | /* VESA packed modes may come with zeroed mask sizes, which need | |
359 | to be set here according to DAC Palette width. If we don't, | |
360 | this results in Linux displaying a black screen. */ | |
361 | if (driver_id == GRUB_VIDEO_DRIVER_VBE && mode_info.bpp <= 8) | |
362 | { | |
363 | struct grub_vbe_info_block controller_info; | |
364 | int status; | |
365 | int width = 8; | |
366 | ||
367 | status = grub_vbe_bios_get_controller_info (&controller_info); | |
368 | ||
369 | if (status == GRUB_VBE_STATUS_OK && | |
370 | (controller_info.capabilities & GRUB_VBE_CAPABILITY_DACWIDTH)) | |
371 | status = grub_vbe_bios_set_dac_palette_width (&width); | |
372 | ||
373 | if (status != GRUB_VBE_STATUS_OK) | |
374 | /* 6 is default after mode reset. */ | |
375 | width = 6; | |
376 | ||
377 | params->red_mask_size = params->green_mask_size | |
378 | = params->blue_mask_size = width; | |
379 | params->reserved_mask_size = 0; | |
380 | } | |
381 | #endif | |
382 | ||
383 | return GRUB_ERR_NONE; | |
384 | } | |
385 | ||
386 | /* Context for grub_linux_boot. */ | |
387 | struct grub_linux_boot_ctx | |
388 | { | |
389 | grub_addr_t real_mode_target; | |
390 | grub_size_t real_size; | |
391 | struct linux_kernel_params *params; | |
392 | int e820_num; | |
393 | }; | |
394 | ||
395 | /* Helper for grub_linux_boot. */ | |
396 | static int | |
397 | grub_linux_boot_mmap_find (grub_uint64_t addr, grub_uint64_t size, | |
398 | grub_memory_type_t type, void *data) | |
399 | { | |
400 | struct grub_linux_boot_ctx *ctx = data; | |
401 | ||
402 | /* We must put real mode code in the traditional space. */ | |
403 | if (type != GRUB_MEMORY_AVAILABLE || addr > 0x90000) | |
404 | return 0; | |
405 | ||
406 | if (addr + size < 0x10000) | |
407 | return 0; | |
408 | ||
409 | if (addr < 0x10000) | |
410 | { | |
411 | size += addr - 0x10000; | |
412 | addr = 0x10000; | |
413 | } | |
414 | ||
415 | if (addr + size > 0x90000) | |
416 | size = 0x90000 - addr; | |
417 | ||
418 | if (ctx->real_size + efi_mmap_size > size) | |
419 | return 0; | |
420 | ||
421 | grub_dprintf ("linux", "addr = %lx, size = %x, need_size = %x\n", | |
422 | (unsigned long) addr, | |
423 | (unsigned) size, | |
424 | (unsigned) (ctx->real_size + efi_mmap_size)); | |
425 | ctx->real_mode_target = ((addr + size) - (ctx->real_size + efi_mmap_size)); | |
426 | return 1; | |
427 | } | |
428 | ||
429 | /* GRUB types conveniently match E820 types. */ | |
430 | static int | |
431 | grub_linux_boot_mmap_fill (grub_uint64_t addr, grub_uint64_t size, | |
432 | grub_memory_type_t type, void *data) | |
433 | { | |
434 | struct grub_linux_boot_ctx *ctx = data; | |
435 | ||
436 | if (grub_e820_add_region (ctx->params->e820_map, &ctx->e820_num, | |
437 | addr, size, type)) | |
438 | return 1; | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
443 | static grub_err_t | |
444 | grub_linux_boot (void) | |
445 | { | |
446 | grub_err_t err = 0; | |
447 | const char *modevar; | |
448 | char *tmp; | |
449 | struct grub_relocator32_state state; | |
450 | void *real_mode_mem; | |
451 | struct grub_linux_boot_ctx ctx = { | |
452 | .real_mode_target = 0 | |
453 | }; | |
454 | grub_size_t mmap_size; | |
455 | grub_size_t cl_offset; | |
456 | ||
457 | #ifdef GRUB_MACHINE_IEEE1275 | |
458 | { | |
459 | const char *bootpath; | |
460 | grub_ssize_t len; | |
461 | ||
462 | bootpath = grub_env_get ("root"); | |
463 | if (bootpath) | |
464 | grub_ieee1275_set_property (grub_ieee1275_chosen, | |
465 | "bootpath", bootpath, | |
466 | grub_strlen (bootpath) + 1, | |
467 | &len); | |
468 | linux_params.ofw_signature = GRUB_LINUX_OFW_SIGNATURE; | |
469 | linux_params.ofw_num_items = 1; | |
470 | linux_params.ofw_cif_handler = (grub_uint32_t) grub_ieee1275_entry_fn; | |
471 | linux_params.ofw_idt = 0; | |
472 | } | |
473 | #endif | |
474 | ||
475 | modevar = grub_env_get ("gfxpayload"); | |
476 | ||
477 | /* Now all graphical modes are acceptable. | |
478 | May change in future if we have modes without framebuffer. */ | |
479 | if (modevar && *modevar != 0) | |
480 | { | |
481 | tmp = grub_xasprintf ("%s;" DEFAULT_VIDEO_MODE, modevar); | |
482 | if (! tmp) | |
483 | return grub_errno; | |
484 | #if ACCEPTS_PURE_TEXT | |
485 | err = grub_video_set_mode (tmp, 0, 0); | |
486 | #else | |
487 | err = grub_video_set_mode (tmp, GRUB_VIDEO_MODE_TYPE_PURE_TEXT, 0); | |
488 | #endif | |
489 | grub_free (tmp); | |
490 | } | |
491 | else /* We can't go back to text mode from coreboot fb. */ | |
492 | #ifdef GRUB_MACHINE_COREBOOT | |
493 | if (grub_video_get_driver_id () == GRUB_VIDEO_DRIVER_COREBOOT) | |
494 | err = GRUB_ERR_NONE; | |
495 | else | |
496 | #endif | |
497 | { | |
498 | #if ACCEPTS_PURE_TEXT | |
499 | err = grub_video_set_mode (DEFAULT_VIDEO_MODE, 0, 0); | |
500 | #else | |
501 | err = grub_video_set_mode (DEFAULT_VIDEO_MODE, | |
502 | GRUB_VIDEO_MODE_TYPE_PURE_TEXT, 0); | |
503 | #endif | |
504 | } | |
505 | ||
506 | if (err) | |
507 | { | |
508 | grub_print_error (); | |
509 | grub_puts_ (N_("Booting in blind mode")); | |
510 | grub_errno = GRUB_ERR_NONE; | |
511 | } | |
512 | ||
513 | if (grub_linux_setup_video (&linux_params)) | |
514 | { | |
515 | #if defined (GRUB_MACHINE_PCBIOS) || defined (GRUB_MACHINE_COREBOOT) || defined (GRUB_MACHINE_QEMU) | |
516 | linux_params.have_vga = GRUB_VIDEO_LINUX_TYPE_TEXT; | |
517 | linux_params.video_mode = 0x3; | |
518 | #else | |
519 | linux_params.have_vga = 0; | |
520 | linux_params.video_mode = 0; | |
521 | linux_params.video_width = 0; | |
522 | linux_params.video_height = 0; | |
523 | #endif | |
524 | } | |
525 | ||
526 | ||
527 | #ifndef GRUB_MACHINE_IEEE1275 | |
528 | if (linux_params.have_vga == GRUB_VIDEO_LINUX_TYPE_TEXT) | |
529 | #endif | |
530 | { | |
531 | grub_term_output_t term; | |
532 | int found = 0; | |
533 | FOR_ACTIVE_TERM_OUTPUTS(term) | |
534 | if (grub_strcmp (term->name, "vga_text") == 0 | |
535 | || grub_strcmp (term->name, "console") == 0 | |
536 | || grub_strcmp (term->name, "ofconsole") == 0) | |
537 | { | |
538 | struct grub_term_coordinate pos = grub_term_getxy (term); | |
539 | linux_params.video_cursor_x = pos.x; | |
540 | linux_params.video_cursor_y = pos.y; | |
541 | linux_params.video_width = grub_term_width (term); | |
542 | linux_params.video_height = grub_term_height (term); | |
543 | found = 1; | |
544 | break; | |
545 | } | |
546 | if (!found) | |
547 | { | |
548 | linux_params.video_cursor_x = 0; | |
549 | linux_params.video_cursor_y = 0; | |
550 | linux_params.video_width = 80; | |
551 | linux_params.video_height = 25; | |
552 | } | |
553 | } | |
554 | ||
555 | mmap_size = find_mmap_size (); | |
556 | /* Make sure that each size is aligned to a page boundary. */ | |
557 | cl_offset = ALIGN_UP (mmap_size + sizeof (linux_params), 4096); | |
558 | if (cl_offset < ((grub_size_t) linux_params.setup_sects << GRUB_DISK_SECTOR_BITS)) | |
559 | cl_offset = ALIGN_UP ((grub_size_t) (linux_params.setup_sects | |
560 | << GRUB_DISK_SECTOR_BITS), 4096); | |
561 | ctx.real_size = ALIGN_UP (cl_offset + maximal_cmdline_size, 4096); | |
562 | ||
563 | #ifdef GRUB_MACHINE_EFI | |
564 | efi_mmap_size = find_efi_mmap_size (); | |
565 | if (efi_mmap_size == 0) | |
566 | return grub_errno; | |
567 | #endif | |
568 | ||
569 | grub_dprintf ("linux", "real_size = %x, mmap_size = %x\n", | |
570 | (unsigned) ctx.real_size, (unsigned) mmap_size); | |
571 | ||
572 | #ifdef GRUB_MACHINE_EFI | |
573 | grub_efi_mmap_iterate (grub_linux_boot_mmap_find, &ctx, 1); | |
574 | if (! ctx.real_mode_target) | |
575 | grub_efi_mmap_iterate (grub_linux_boot_mmap_find, &ctx, 0); | |
576 | #else | |
577 | grub_mmap_iterate (grub_linux_boot_mmap_find, &ctx); | |
578 | #endif | |
579 | grub_dprintf ("linux", "real_mode_target = %lx, real_size = %x, efi_mmap_size = %x\n", | |
580 | (unsigned long) ctx.real_mode_target, | |
581 | (unsigned) ctx.real_size, | |
582 | (unsigned) efi_mmap_size); | |
583 | ||
584 | if (! ctx.real_mode_target) | |
585 | return grub_error (GRUB_ERR_OUT_OF_MEMORY, "cannot allocate real mode pages"); | |
586 | ||
587 | { | |
588 | grub_relocator_chunk_t ch; | |
589 | err = grub_relocator_alloc_chunk_addr (relocator, &ch, | |
590 | ctx.real_mode_target, | |
591 | (ctx.real_size + efi_mmap_size)); | |
592 | if (err) | |
593 | return err; | |
594 | real_mode_mem = get_virtual_current_address (ch); | |
595 | } | |
596 | efi_mmap_buf = (grub_uint8_t *) real_mode_mem + ctx.real_size; | |
597 | ||
598 | grub_dprintf ("linux", "real_mode_mem = %p\n", | |
599 | real_mode_mem); | |
600 | ||
601 | ctx.params = real_mode_mem; | |
602 | ||
603 | *ctx.params = linux_params; | |
604 | ctx.params->cmd_line_ptr = ctx.real_mode_target + cl_offset; | |
605 | grub_memcpy ((char *) ctx.params + cl_offset, linux_cmdline, | |
606 | maximal_cmdline_size); | |
607 | ||
608 | grub_dprintf ("linux", "code32_start = %x\n", | |
609 | (unsigned) ctx.params->code32_start); | |
610 | ||
611 | ctx.e820_num = 0; | |
612 | if (grub_mmap_iterate (grub_linux_boot_mmap_fill, &ctx)) | |
613 | return grub_errno; | |
614 | ctx.params->mmap_size = ctx.e820_num; | |
615 | ||
616 | #ifdef GRUB_MACHINE_EFI | |
617 | { | |
618 | grub_efi_uintn_t efi_desc_size; | |
619 | grub_size_t efi_mmap_target; | |
620 | grub_efi_uint32_t efi_desc_version; | |
621 | err = grub_efi_finish_boot_services (&efi_mmap_size, efi_mmap_buf, NULL, | |
622 | &efi_desc_size, &efi_desc_version); | |
623 | if (err) | |
624 | return err; | |
625 | ||
626 | /* Note that no boot services are available from here. */ | |
627 | efi_mmap_target = ctx.real_mode_target | |
628 | + ((grub_uint8_t *) efi_mmap_buf - (grub_uint8_t *) real_mode_mem); | |
629 | /* Pass EFI parameters. */ | |
630 | if (grub_le_to_cpu16 (ctx.params->version) >= 0x0208) | |
631 | { | |
632 | ctx.params->v0208.efi_mem_desc_size = efi_desc_size; | |
633 | ctx.params->v0208.efi_mem_desc_version = efi_desc_version; | |
634 | ctx.params->v0208.efi_mmap = efi_mmap_target; | |
635 | ctx.params->v0208.efi_mmap_size = efi_mmap_size; | |
636 | ||
637 | #ifdef __x86_64__ | |
638 | ctx.params->v0208.efi_mmap_hi = (efi_mmap_target >> 32); | |
639 | #endif | |
640 | } | |
641 | else if (grub_le_to_cpu16 (ctx.params->version) >= 0x0206) | |
642 | { | |
643 | ctx.params->v0206.efi_mem_desc_size = efi_desc_size; | |
644 | ctx.params->v0206.efi_mem_desc_version = efi_desc_version; | |
645 | ctx.params->v0206.efi_mmap = efi_mmap_target; | |
646 | ctx.params->v0206.efi_mmap_size = efi_mmap_size; | |
647 | } | |
648 | else if (grub_le_to_cpu16 (ctx.params->version) >= 0x0204) | |
649 | { | |
650 | ctx.params->v0204.efi_mem_desc_size = efi_desc_size; | |
651 | ctx.params->v0204.efi_mem_desc_version = efi_desc_version; | |
652 | ctx.params->v0204.efi_mmap = efi_mmap_target; | |
653 | ctx.params->v0204.efi_mmap_size = efi_mmap_size; | |
654 | } | |
655 | } | |
656 | #endif | |
657 | ||
658 | /* FIXME. */ | |
659 | /* asm volatile ("lidt %0" : : "m" (idt_desc)); */ | |
660 | state.ebp = state.edi = state.ebx = 0; | |
661 | state.esi = ctx.real_mode_target; | |
662 | state.esp = ctx.real_mode_target; | |
663 | state.eip = ctx.params->code32_start; | |
664 | return grub_relocator32_boot (relocator, state, 0); | |
665 | } | |
666 | ||
667 | static grub_err_t | |
668 | grub_linux_unload (void) | |
669 | { | |
670 | grub_dl_unref (my_mod); | |
671 | loaded = 0; | |
672 | grub_free (linux_cmdline); | |
673 | linux_cmdline = 0; | |
674 | return GRUB_ERR_NONE; | |
675 | } | |
676 | ||
677 | static grub_err_t | |
678 | grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)), | |
679 | int argc, char *argv[]) | |
680 | { | |
681 | grub_file_t file = 0; | |
682 | struct linux_kernel_header lh; | |
683 | grub_uint8_t setup_sects; | |
684 | grub_size_t real_size, prot_size, prot_file_size; | |
685 | grub_ssize_t len; | |
686 | int i; | |
687 | grub_size_t align, min_align; | |
688 | int relocatable; | |
689 | grub_uint64_t preferred_address = GRUB_LINUX_BZIMAGE_ADDR; | |
690 | ||
691 | grub_dl_ref (my_mod); | |
692 | ||
693 | if (argc == 0) | |
694 | { | |
695 | grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected")); | |
696 | goto fail; | |
697 | } | |
698 | ||
699 | file = grub_file_open (argv[0]); | |
700 | if (! file) | |
701 | goto fail; | |
702 | ||
703 | if (grub_file_read (file, &lh, sizeof (lh)) != sizeof (lh)) | |
704 | { | |
705 | if (!grub_errno) | |
706 | grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), | |
707 | argv[0]); | |
708 | goto fail; | |
709 | } | |
710 | ||
711 | if (lh.boot_flag != grub_cpu_to_le16_compile_time (0xaa55)) | |
712 | { | |
713 | grub_error (GRUB_ERR_BAD_OS, "invalid magic number"); | |
714 | goto fail; | |
715 | } | |
716 | ||
717 | if (lh.setup_sects > GRUB_LINUX_MAX_SETUP_SECTS) | |
718 | { | |
719 | grub_error (GRUB_ERR_BAD_OS, "too many setup sectors"); | |
720 | goto fail; | |
721 | } | |
722 | ||
723 | /* FIXME: 2.03 is not always good enough (Linux 2.4 can be 2.03 and | |
724 | still not support 32-bit boot. */ | |
725 | if (lh.header != grub_cpu_to_le32_compile_time (GRUB_LINUX_MAGIC_SIGNATURE) | |
726 | || grub_le_to_cpu16 (lh.version) < 0x0203) | |
727 | { | |
728 | grub_error (GRUB_ERR_BAD_OS, "version too old for 32-bit boot" | |
729 | #ifdef GRUB_MACHINE_PCBIOS | |
730 | " (try with `linux16')" | |
731 | #endif | |
732 | ); | |
733 | goto fail; | |
734 | } | |
735 | ||
736 | if (! (lh.loadflags & GRUB_LINUX_FLAG_BIG_KERNEL)) | |
737 | { | |
738 | grub_error (GRUB_ERR_BAD_OS, "zImage doesn't support 32-bit boot" | |
739 | #ifdef GRUB_MACHINE_PCBIOS | |
740 | " (try with `linux16')" | |
741 | #endif | |
742 | ); | |
743 | goto fail; | |
744 | } | |
745 | ||
746 | if (grub_le_to_cpu16 (lh.version) >= 0x0206) | |
747 | maximal_cmdline_size = grub_le_to_cpu32 (lh.cmdline_size) + 1; | |
748 | else | |
749 | maximal_cmdline_size = 256; | |
750 | ||
751 | if (maximal_cmdline_size < 128) | |
752 | maximal_cmdline_size = 128; | |
753 | ||
754 | setup_sects = lh.setup_sects; | |
755 | ||
756 | /* If SETUP_SECTS is not set, set it to the default (4). */ | |
757 | if (! setup_sects) | |
758 | setup_sects = GRUB_LINUX_DEFAULT_SETUP_SECTS; | |
759 | ||
760 | real_size = setup_sects << GRUB_DISK_SECTOR_BITS; | |
761 | prot_file_size = grub_file_size (file) - real_size - GRUB_DISK_SECTOR_SIZE; | |
762 | ||
763 | if (grub_le_to_cpu16 (lh.version) >= 0x205 | |
764 | && lh.kernel_alignment != 0 | |
765 | && ((lh.kernel_alignment - 1) & lh.kernel_alignment) == 0) | |
766 | { | |
767 | for (align = 0; align < 32; align++) | |
768 | if (grub_le_to_cpu32 (lh.kernel_alignment) & (1 << align)) | |
769 | break; | |
770 | relocatable = grub_le_to_cpu32 (lh.relocatable); | |
771 | } | |
772 | else | |
773 | { | |
774 | align = 0; | |
775 | relocatable = 0; | |
776 | } | |
777 | ||
778 | if (grub_le_to_cpu16 (lh.version) >= 0x020a) | |
779 | { | |
780 | min_align = lh.min_alignment; | |
781 | prot_size = grub_le_to_cpu32 (lh.init_size); | |
782 | prot_init_space = page_align (prot_size); | |
783 | if (relocatable) | |
784 | preferred_address = grub_le_to_cpu64 (lh.pref_address); | |
785 | else | |
786 | preferred_address = GRUB_LINUX_BZIMAGE_ADDR; | |
787 | } | |
788 | else | |
789 | { | |
790 | min_align = align; | |
791 | prot_size = prot_file_size; | |
792 | preferred_address = GRUB_LINUX_BZIMAGE_ADDR; | |
793 | /* Usually, the compression ratio is about 50%. */ | |
794 | prot_init_space = page_align (prot_size) * 3; | |
795 | } | |
796 | ||
797 | if (allocate_pages (prot_size, &align, | |
798 | min_align, relocatable, | |
799 | preferred_address)) | |
800 | goto fail; | |
801 | ||
802 | grub_memset (&linux_params, 0, sizeof (linux_params)); | |
803 | grub_memcpy (&linux_params.setup_sects, &lh.setup_sects, sizeof (lh) - 0x1F1); | |
804 | ||
805 | linux_params.code32_start = prot_mode_target + lh.code32_start - GRUB_LINUX_BZIMAGE_ADDR; | |
806 | linux_params.kernel_alignment = (1 << align); | |
807 | linux_params.ps_mouse = linux_params.padding10 = 0; | |
808 | ||
809 | len = sizeof (linux_params) - sizeof (lh); | |
810 | if (grub_file_read (file, (char *) &linux_params + sizeof (lh), len) != len) | |
811 | { | |
812 | if (!grub_errno) | |
813 | grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), | |
814 | argv[0]); | |
815 | goto fail; | |
816 | } | |
817 | ||
818 | linux_params.type_of_loader = GRUB_LINUX_BOOT_LOADER_TYPE; | |
819 | ||
820 | /* These two are used (instead of cmd_line_ptr) by older versions of Linux, | |
821 | and otherwise ignored. */ | |
822 | linux_params.cl_magic = GRUB_LINUX_CL_MAGIC; | |
823 | linux_params.cl_offset = 0x1000; | |
824 | ||
825 | linux_params.ramdisk_image = 0; | |
826 | linux_params.ramdisk_size = 0; | |
827 | ||
828 | linux_params.heap_end_ptr = GRUB_LINUX_HEAP_END_OFFSET; | |
829 | linux_params.loadflags |= GRUB_LINUX_FLAG_CAN_USE_HEAP; | |
830 | ||
831 | /* These are not needed to be precise, because Linux uses these values | |
832 | only to raise an error when the decompression code cannot find good | |
833 | space. */ | |
834 | linux_params.ext_mem = ((32 * 0x100000) >> 10); | |
835 | linux_params.alt_mem = ((32 * 0x100000) >> 10); | |
836 | ||
837 | /* Ignored by Linux. */ | |
838 | linux_params.video_page = 0; | |
839 | ||
840 | /* Only used when `video_mode == 0x7', otherwise ignored. */ | |
841 | linux_params.video_ega_bx = 0; | |
842 | ||
843 | linux_params.font_size = 16; /* XXX */ | |
844 | ||
845 | #ifdef GRUB_MACHINE_EFI | |
846 | #ifdef __x86_64__ | |
847 | if (grub_le_to_cpu16 (linux_params.version) < 0x0208 && | |
848 | ((grub_addr_t) grub_efi_system_table >> 32) != 0) | |
849 | return grub_error(GRUB_ERR_BAD_OS, | |
850 | "kernel does not support 64-bit addressing"); | |
851 | #endif | |
852 | ||
853 | if (grub_le_to_cpu16 (linux_params.version) >= 0x0208) | |
854 | { | |
855 | linux_params.v0208.efi_signature = GRUB_LINUX_EFI_SIGNATURE; | |
856 | linux_params.v0208.efi_system_table = (grub_uint32_t) (grub_addr_t) grub_efi_system_table; | |
857 | #ifdef __x86_64__ | |
858 | linux_params.v0208.efi_system_table_hi = (grub_uint32_t) ((grub_uint64_t) grub_efi_system_table >> 32); | |
859 | #endif | |
860 | } | |
861 | else if (grub_le_to_cpu16 (linux_params.version) >= 0x0206) | |
862 | { | |
863 | linux_params.v0206.efi_signature = GRUB_LINUX_EFI_SIGNATURE; | |
864 | linux_params.v0206.efi_system_table = (grub_uint32_t) (grub_addr_t) grub_efi_system_table; | |
865 | } | |
866 | else if (grub_le_to_cpu16 (linux_params.version) >= 0x0204) | |
867 | { | |
868 | linux_params.v0204.efi_signature = GRUB_LINUX_EFI_SIGNATURE_0204; | |
869 | linux_params.v0204.efi_system_table = (grub_uint32_t) (grub_addr_t) grub_efi_system_table; | |
870 | } | |
871 | #endif | |
872 | ||
873 | /* The other parameters are filled when booting. */ | |
874 | ||
875 | grub_file_seek (file, real_size + GRUB_DISK_SECTOR_SIZE); | |
876 | ||
877 | grub_dprintf ("linux", "bzImage, setup=0x%x, size=0x%x\n", | |
878 | (unsigned) real_size, (unsigned) prot_size); | |
879 | ||
880 | /* Look for memory size and video mode specified on the command line. */ | |
881 | linux_mem_size = 0; | |
882 | for (i = 1; i < argc; i++) | |
883 | #ifdef GRUB_MACHINE_PCBIOS | |
884 | if (grub_memcmp (argv[i], "vga=", 4) == 0) | |
885 | { | |
886 | /* Video mode selection support. */ | |
887 | char *val = argv[i] + 4; | |
888 | unsigned vid_mode = GRUB_LINUX_VID_MODE_NORMAL; | |
889 | struct grub_vesa_mode_table_entry *linux_mode; | |
890 | grub_err_t err; | |
891 | char *buf; | |
892 | ||
893 | grub_dl_load ("vbe"); | |
894 | ||
895 | if (grub_strcmp (val, "normal") == 0) | |
896 | vid_mode = GRUB_LINUX_VID_MODE_NORMAL; | |
897 | else if (grub_strcmp (val, "ext") == 0) | |
898 | vid_mode = GRUB_LINUX_VID_MODE_EXTENDED; | |
899 | else if (grub_strcmp (val, "ask") == 0) | |
900 | { | |
901 | grub_puts_ (N_("Legacy `ask' parameter no longer supported.")); | |
902 | ||
903 | /* We usually would never do this in a loader, but "vga=ask" means user | |
904 | requested interaction, so it can't hurt to request keyboard input. */ | |
905 | grub_wait_after_message (); | |
906 | ||
907 | goto fail; | |
908 | } | |
909 | else | |
910 | vid_mode = (grub_uint16_t) grub_strtoul (val, 0, 0); | |
911 | ||
912 | switch (vid_mode) | |
913 | { | |
914 | case 0: | |
915 | case GRUB_LINUX_VID_MODE_NORMAL: | |
916 | grub_env_set ("gfxpayload", "text"); | |
917 | grub_printf_ (N_("%s is deprecated. " | |
918 | "Use set gfxpayload=%s before " | |
919 | "linux command instead.\n"), "text", | |
920 | argv[i]); | |
921 | break; | |
922 | ||
923 | case 1: | |
924 | case GRUB_LINUX_VID_MODE_EXTENDED: | |
925 | /* FIXME: support 80x50 text. */ | |
926 | grub_env_set ("gfxpayload", "text"); | |
927 | grub_printf_ (N_("%s is deprecated. " | |
928 | "Use set gfxpayload=%s before " | |
929 | "linux command instead.\n"), "text", | |
930 | argv[i]); | |
931 | break; | |
932 | default: | |
933 | /* Ignore invalid values. */ | |
934 | if (vid_mode < GRUB_VESA_MODE_TABLE_START || | |
935 | vid_mode > GRUB_VESA_MODE_TABLE_END) | |
936 | { | |
937 | grub_env_set ("gfxpayload", "text"); | |
938 | /* TRANSLATORS: "x" has to be entered in, like an identifier, | |
939 | so please don't use better Unicode codepoints. */ | |
940 | grub_printf_ (N_("%s is deprecated. VGA mode %d isn't recognized. " | |
941 | "Use set gfxpayload=WIDTHxHEIGHT[xDEPTH] " | |
942 | "before linux command instead.\n"), | |
943 | argv[i], vid_mode); | |
944 | break; | |
945 | } | |
946 | ||
947 | linux_mode = &grub_vesa_mode_table[vid_mode | |
948 | - GRUB_VESA_MODE_TABLE_START]; | |
949 | ||
950 | buf = grub_xasprintf ("%ux%ux%u,%ux%u", | |
951 | linux_mode->width, linux_mode->height, | |
952 | linux_mode->depth, | |
953 | linux_mode->width, linux_mode->height); | |
954 | if (! buf) | |
955 | goto fail; | |
956 | ||
957 | grub_printf_ (N_("%s is deprecated. " | |
958 | "Use set gfxpayload=%s before " | |
959 | "linux command instead.\n"), | |
960 | argv[i], buf); | |
961 | err = grub_env_set ("gfxpayload", buf); | |
962 | grub_free (buf); | |
963 | if (err) | |
964 | goto fail; | |
965 | } | |
966 | } | |
967 | else | |
968 | #endif /* GRUB_MACHINE_PCBIOS */ | |
969 | if (grub_memcmp (argv[i], "mem=", 4) == 0) | |
970 | { | |
971 | char *val = argv[i] + 4; | |
972 | ||
973 | linux_mem_size = grub_strtoul (val, &val, 0); | |
974 | ||
975 | if (grub_errno) | |
976 | { | |
977 | grub_errno = GRUB_ERR_NONE; | |
978 | linux_mem_size = 0; | |
979 | } | |
980 | else | |
981 | { | |
982 | int shift = 0; | |
983 | ||
984 | switch (grub_tolower (val[0])) | |
985 | { | |
986 | case 'g': | |
987 | shift += 10; | |
988 | case 'm': | |
989 | shift += 10; | |
990 | case 'k': | |
991 | shift += 10; | |
992 | default: | |
993 | break; | |
994 | } | |
995 | ||
996 | /* Check an overflow. */ | |
997 | if (linux_mem_size > (~0UL >> shift)) | |
998 | linux_mem_size = 0; | |
999 | else | |
1000 | linux_mem_size <<= shift; | |
1001 | } | |
1002 | } | |
1003 | else if (grub_memcmp (argv[i], "quiet", sizeof ("quiet") - 1) == 0) | |
1004 | { | |
1005 | linux_params.loadflags |= GRUB_LINUX_FLAG_QUIET; | |
1006 | } | |
1007 | ||
1008 | /* Create kernel command line. */ | |
1009 | linux_cmdline = grub_zalloc (maximal_cmdline_size + 1); | |
1010 | if (!linux_cmdline) | |
1011 | goto fail; | |
1012 | grub_memcpy (linux_cmdline, LINUX_IMAGE, sizeof (LINUX_IMAGE)); | |
1013 | grub_create_loader_cmdline (argc, argv, | |
1014 | linux_cmdline | |
1015 | + sizeof (LINUX_IMAGE) - 1, | |
1016 | maximal_cmdline_size | |
1017 | - (sizeof (LINUX_IMAGE) - 1)); | |
1018 | ||
1019 | len = prot_file_size; | |
1020 | if (grub_file_read (file, prot_mode_mem, len) != len && !grub_errno) | |
1021 | grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), | |
1022 | argv[0]); | |
1023 | ||
1024 | if (grub_errno == GRUB_ERR_NONE) | |
1025 | { | |
1026 | grub_loader_set (grub_linux_boot, grub_linux_unload, | |
1027 | 0 /* set noreturn=0 in order to avoid grub_console_fini() */); | |
1028 | loaded = 1; | |
1029 | } | |
1030 | ||
1031 | fail: | |
1032 | ||
1033 | if (file) | |
1034 | grub_file_close (file); | |
1035 | ||
1036 | if (grub_errno != GRUB_ERR_NONE) | |
1037 | { | |
1038 | grub_dl_unref (my_mod); | |
1039 | loaded = 0; | |
1040 | } | |
1041 | ||
1042 | return grub_errno; | |
1043 | } | |
1044 | ||
1045 | static grub_err_t | |
1046 | grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)), | |
1047 | int argc, char *argv[]) | |
1048 | { | |
1049 | grub_size_t size = 0; | |
1050 | grub_addr_t addr_min, addr_max; | |
1051 | grub_addr_t addr; | |
1052 | grub_err_t err; | |
1053 | struct grub_linux_initrd_context initrd_ctx = { 0, }; | |
1054 | ||
1055 | if (argc == 0) | |
1056 | { | |
1057 | grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected")); | |
1058 | goto fail; | |
1059 | } | |
1060 | ||
1061 | if (! loaded) | |
1062 | { | |
1063 | grub_error (GRUB_ERR_BAD_ARGUMENT, N_("you need to load the kernel first")); | |
1064 | goto fail; | |
1065 | } | |
1066 | ||
1067 | if (grub_initrd_init (argc, argv, &initrd_ctx)) | |
1068 | goto fail; | |
1069 | ||
1070 | size = grub_get_initrd_size (&initrd_ctx); | |
1071 | ||
1072 | initrd_pages = (page_align (size) >> 12); | |
1073 | ||
1074 | /* Get the highest address available for the initrd. */ | |
1075 | if (grub_le_to_cpu16 (linux_params.version) >= 0x0203) | |
1076 | { | |
1077 | addr_max = grub_cpu_to_le32 (linux_params.initrd_addr_max); | |
1078 | ||
1079 | /* XXX in reality, Linux specifies a bogus value, so | |
1080 | it is necessary to make sure that ADDR_MAX does not exceed | |
1081 | 0x3fffffff. */ | |
1082 | if (addr_max > GRUB_LINUX_INITRD_MAX_ADDRESS) | |
1083 | addr_max = GRUB_LINUX_INITRD_MAX_ADDRESS; | |
1084 | } | |
1085 | else | |
1086 | addr_max = GRUB_LINUX_INITRD_MAX_ADDRESS; | |
1087 | ||
1088 | if (linux_mem_size != 0 && linux_mem_size < addr_max) | |
1089 | addr_max = linux_mem_size; | |
1090 | ||
1091 | /* Linux 2.3.xx has a bug in the memory range check, so avoid | |
1092 | the last page. | |
1093 | Linux 2.2.xx has a bug in the memory range check, which is | |
1094 | worse than that of Linux 2.3.xx, so avoid the last 64kb. */ | |
1095 | addr_max -= 0x10000; | |
1096 | ||
1097 | addr_min = (grub_addr_t) prot_mode_target + prot_init_space; | |
1098 | ||
1099 | /* Put the initrd as high as possible, 4KiB aligned. */ | |
1100 | addr = (addr_max - size) & ~0xFFF; | |
1101 | ||
1102 | if (addr < addr_min) | |
1103 | { | |
1104 | grub_error (GRUB_ERR_OUT_OF_RANGE, "the initrd is too big"); | |
1105 | goto fail; | |
1106 | } | |
1107 | ||
1108 | { | |
1109 | grub_relocator_chunk_t ch; | |
1110 | err = grub_relocator_alloc_chunk_align (relocator, &ch, | |
1111 | addr_min, addr, size, 0x1000, | |
1112 | GRUB_RELOCATOR_PREFERENCE_HIGH, | |
1113 | 1); | |
1114 | if (err) | |
1115 | return err; | |
1116 | initrd_mem = get_virtual_current_address (ch); | |
1117 | initrd_mem_target = get_physical_target_address (ch); | |
1118 | } | |
1119 | ||
1120 | if (grub_initrd_load (&initrd_ctx, argv, initrd_mem)) | |
1121 | goto fail; | |
1122 | ||
1123 | grub_dprintf ("linux", "Initrd, addr=0x%x, size=0x%x\n", | |
1124 | (unsigned) addr, (unsigned) size); | |
1125 | ||
1126 | linux_params.ramdisk_image = initrd_mem_target; | |
1127 | linux_params.ramdisk_size = size; | |
1128 | linux_params.root_dev = 0x0100; /* XXX */ | |
1129 | ||
1130 | fail: | |
1131 | grub_initrd_close (&initrd_ctx); | |
1132 | ||
1133 | return grub_errno; | |
1134 | } | |
1135 | ||
1136 | static grub_command_t cmd_linux, cmd_initrd; | |
1137 | ||
1138 | GRUB_MOD_INIT(linux) | |
1139 | { | |
1140 | cmd_linux = grub_register_command ("linux", grub_cmd_linux, | |
1141 | 0, N_("Load Linux.")); | |
1142 | cmd_initrd = grub_register_command ("initrd", grub_cmd_initrd, | |
1143 | 0, N_("Load initrd.")); | |
1144 | my_mod = mod; | |
1145 | } | |
1146 | ||
1147 | GRUB_MOD_FINI(linux) | |
1148 | { | |
1149 | grub_unregister_command (cmd_linux); | |
1150 | grub_unregister_command (cmd_initrd); | |
1151 | } |