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afedec18 TV |
1 | /* |
2 | * VRAM manager for OMAP | |
3 | * | |
4 | * Copyright (C) 2009 Nokia Corporation | |
5 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | /*#define DEBUG*/ | |
22 | ||
23 | #include <linux/kernel.h> | |
24 | #include <linux/mm.h> | |
25 | #include <linux/list.h> | |
5a0e3ad6 | 26 | #include <linux/slab.h> |
afedec18 TV |
27 | #include <linux/seq_file.h> |
28 | #include <linux/bootmem.h> | |
29 | #include <linux/completion.h> | |
30 | #include <linux/debugfs.h> | |
31 | #include <linux/jiffies.h> | |
32 | #include <linux/module.h> | |
33 | ||
34 | #include <asm/setup.h> | |
35 | ||
36 | #include <plat/sram.h> | |
37 | #include <plat/vram.h> | |
38 | #include <plat/dma.h> | |
39 | ||
40 | #ifdef DEBUG | |
41 | #define DBG(format, ...) pr_debug("VRAM: " format, ## __VA_ARGS__) | |
42 | #else | |
43 | #define DBG(format, ...) | |
44 | #endif | |
45 | ||
46 | #define OMAP2_SRAM_START 0x40200000 | |
47 | /* Maximum size, in reality this is smaller if SRAM is partially locked. */ | |
48 | #define OMAP2_SRAM_SIZE 0xa0000 /* 640k */ | |
49 | ||
50 | /* postponed regions are used to temporarily store region information at boot | |
51 | * time when we cannot yet allocate the region list */ | |
52 | #define MAX_POSTPONED_REGIONS 10 | |
53 | ||
54 | static bool vram_initialized; | |
55 | static int postponed_cnt; | |
56 | static struct { | |
57 | unsigned long paddr; | |
58 | size_t size; | |
59 | } postponed_regions[MAX_POSTPONED_REGIONS]; | |
60 | ||
61 | struct vram_alloc { | |
62 | struct list_head list; | |
63 | unsigned long paddr; | |
64 | unsigned pages; | |
65 | }; | |
66 | ||
67 | struct vram_region { | |
68 | struct list_head list; | |
69 | struct list_head alloc_list; | |
70 | unsigned long paddr; | |
71 | unsigned pages; | |
72 | }; | |
73 | ||
74 | static DEFINE_MUTEX(region_mutex); | |
75 | static LIST_HEAD(region_list); | |
76 | ||
77 | static inline int region_mem_type(unsigned long paddr) | |
78 | { | |
79 | if (paddr >= OMAP2_SRAM_START && | |
80 | paddr < OMAP2_SRAM_START + OMAP2_SRAM_SIZE) | |
81 | return OMAP_VRAM_MEMTYPE_SRAM; | |
82 | else | |
83 | return OMAP_VRAM_MEMTYPE_SDRAM; | |
84 | } | |
85 | ||
86 | static struct vram_region *omap_vram_create_region(unsigned long paddr, | |
87 | unsigned pages) | |
88 | { | |
89 | struct vram_region *rm; | |
90 | ||
91 | rm = kzalloc(sizeof(*rm), GFP_KERNEL); | |
92 | ||
93 | if (rm) { | |
94 | INIT_LIST_HEAD(&rm->alloc_list); | |
95 | rm->paddr = paddr; | |
96 | rm->pages = pages; | |
97 | } | |
98 | ||
99 | return rm; | |
100 | } | |
101 | ||
102 | #if 0 | |
103 | static void omap_vram_free_region(struct vram_region *vr) | |
104 | { | |
105 | list_del(&vr->list); | |
106 | kfree(vr); | |
107 | } | |
108 | #endif | |
109 | ||
110 | static struct vram_alloc *omap_vram_create_allocation(struct vram_region *vr, | |
111 | unsigned long paddr, unsigned pages) | |
112 | { | |
113 | struct vram_alloc *va; | |
114 | struct vram_alloc *new; | |
115 | ||
116 | new = kzalloc(sizeof(*va), GFP_KERNEL); | |
117 | ||
118 | if (!new) | |
119 | return NULL; | |
120 | ||
121 | new->paddr = paddr; | |
122 | new->pages = pages; | |
123 | ||
124 | list_for_each_entry(va, &vr->alloc_list, list) { | |
125 | if (va->paddr > new->paddr) | |
126 | break; | |
127 | } | |
128 | ||
129 | list_add_tail(&new->list, &va->list); | |
130 | ||
131 | return new; | |
132 | } | |
133 | ||
134 | static void omap_vram_free_allocation(struct vram_alloc *va) | |
135 | { | |
136 | list_del(&va->list); | |
137 | kfree(va); | |
138 | } | |
139 | ||
140 | int omap_vram_add_region(unsigned long paddr, size_t size) | |
141 | { | |
142 | struct vram_region *rm; | |
143 | unsigned pages; | |
144 | ||
145 | if (vram_initialized) { | |
146 | DBG("adding region paddr %08lx size %d\n", | |
147 | paddr, size); | |
148 | ||
149 | size &= PAGE_MASK; | |
150 | pages = size >> PAGE_SHIFT; | |
151 | ||
152 | rm = omap_vram_create_region(paddr, pages); | |
153 | if (rm == NULL) | |
154 | return -ENOMEM; | |
155 | ||
156 | list_add(&rm->list, ®ion_list); | |
157 | } else { | |
158 | if (postponed_cnt == MAX_POSTPONED_REGIONS) | |
159 | return -ENOMEM; | |
160 | ||
161 | postponed_regions[postponed_cnt].paddr = paddr; | |
162 | postponed_regions[postponed_cnt].size = size; | |
163 | ||
164 | ++postponed_cnt; | |
165 | } | |
166 | return 0; | |
167 | } | |
168 | ||
169 | int omap_vram_free(unsigned long paddr, size_t size) | |
170 | { | |
171 | struct vram_region *rm; | |
172 | struct vram_alloc *alloc; | |
173 | unsigned start, end; | |
174 | ||
175 | DBG("free mem paddr %08lx size %d\n", paddr, size); | |
176 | ||
177 | size = PAGE_ALIGN(size); | |
178 | ||
179 | mutex_lock(®ion_mutex); | |
180 | ||
181 | list_for_each_entry(rm, ®ion_list, list) { | |
182 | list_for_each_entry(alloc, &rm->alloc_list, list) { | |
183 | start = alloc->paddr; | |
184 | end = alloc->paddr + (alloc->pages >> PAGE_SHIFT); | |
185 | ||
186 | if (start >= paddr && end < paddr + size) | |
187 | goto found; | |
188 | } | |
189 | } | |
190 | ||
191 | mutex_unlock(®ion_mutex); | |
192 | return -EINVAL; | |
193 | ||
194 | found: | |
195 | omap_vram_free_allocation(alloc); | |
196 | ||
197 | mutex_unlock(®ion_mutex); | |
198 | return 0; | |
199 | } | |
200 | EXPORT_SYMBOL(omap_vram_free); | |
201 | ||
202 | static int _omap_vram_reserve(unsigned long paddr, unsigned pages) | |
203 | { | |
204 | struct vram_region *rm; | |
205 | struct vram_alloc *alloc; | |
206 | size_t size; | |
207 | ||
208 | size = pages << PAGE_SHIFT; | |
209 | ||
210 | list_for_each_entry(rm, ®ion_list, list) { | |
211 | unsigned long start, end; | |
212 | ||
213 | DBG("checking region %lx %d\n", rm->paddr, rm->pages); | |
214 | ||
215 | if (region_mem_type(rm->paddr) != region_mem_type(paddr)) | |
216 | continue; | |
217 | ||
218 | start = rm->paddr; | |
219 | end = start + (rm->pages << PAGE_SHIFT) - 1; | |
220 | if (start > paddr || end < paddr + size - 1) | |
221 | continue; | |
222 | ||
223 | DBG("block ok, checking allocs\n"); | |
224 | ||
225 | list_for_each_entry(alloc, &rm->alloc_list, list) { | |
226 | end = alloc->paddr - 1; | |
227 | ||
228 | if (start <= paddr && end >= paddr + size - 1) | |
229 | goto found; | |
230 | ||
231 | start = alloc->paddr + (alloc->pages << PAGE_SHIFT); | |
232 | } | |
233 | ||
234 | end = rm->paddr + (rm->pages << PAGE_SHIFT) - 1; | |
235 | ||
236 | if (!(start <= paddr && end >= paddr + size - 1)) | |
237 | continue; | |
238 | found: | |
239 | DBG("found area start %lx, end %lx\n", start, end); | |
240 | ||
241 | if (omap_vram_create_allocation(rm, paddr, pages) == NULL) | |
242 | return -ENOMEM; | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | return -ENOMEM; | |
248 | } | |
249 | ||
250 | int omap_vram_reserve(unsigned long paddr, size_t size) | |
251 | { | |
252 | unsigned pages; | |
253 | int r; | |
254 | ||
255 | DBG("reserve mem paddr %08lx size %d\n", paddr, size); | |
256 | ||
257 | size = PAGE_ALIGN(size); | |
258 | pages = size >> PAGE_SHIFT; | |
259 | ||
260 | mutex_lock(®ion_mutex); | |
261 | ||
262 | r = _omap_vram_reserve(paddr, pages); | |
263 | ||
264 | mutex_unlock(®ion_mutex); | |
265 | ||
266 | return r; | |
267 | } | |
268 | EXPORT_SYMBOL(omap_vram_reserve); | |
269 | ||
270 | static void _omap_vram_dma_cb(int lch, u16 ch_status, void *data) | |
271 | { | |
272 | struct completion *compl = data; | |
273 | complete(compl); | |
274 | } | |
275 | ||
276 | static int _omap_vram_clear(u32 paddr, unsigned pages) | |
277 | { | |
278 | struct completion compl; | |
279 | unsigned elem_count; | |
280 | unsigned frame_count; | |
281 | int r; | |
282 | int lch; | |
283 | ||
284 | init_completion(&compl); | |
285 | ||
286 | r = omap_request_dma(OMAP_DMA_NO_DEVICE, "VRAM DMA", | |
287 | _omap_vram_dma_cb, | |
288 | &compl, &lch); | |
289 | if (r) { | |
290 | pr_err("VRAM: request_dma failed for memory clear\n"); | |
291 | return -EBUSY; | |
292 | } | |
293 | ||
294 | elem_count = pages * PAGE_SIZE / 4; | |
295 | frame_count = 1; | |
296 | ||
297 | omap_set_dma_transfer_params(lch, OMAP_DMA_DATA_TYPE_S32, | |
298 | elem_count, frame_count, | |
299 | OMAP_DMA_SYNC_ELEMENT, | |
300 | 0, 0); | |
301 | ||
302 | omap_set_dma_dest_params(lch, 0, OMAP_DMA_AMODE_POST_INC, | |
303 | paddr, 0, 0); | |
304 | ||
305 | omap_set_dma_color_mode(lch, OMAP_DMA_CONSTANT_FILL, 0x000000); | |
306 | ||
307 | omap_start_dma(lch); | |
308 | ||
309 | if (wait_for_completion_timeout(&compl, msecs_to_jiffies(1000)) == 0) { | |
310 | omap_stop_dma(lch); | |
311 | pr_err("VRAM: dma timeout while clearing memory\n"); | |
312 | r = -EIO; | |
313 | goto err; | |
314 | } | |
315 | ||
316 | r = 0; | |
317 | err: | |
318 | omap_free_dma(lch); | |
319 | ||
320 | return r; | |
321 | } | |
322 | ||
323 | static int _omap_vram_alloc(int mtype, unsigned pages, unsigned long *paddr) | |
324 | { | |
325 | struct vram_region *rm; | |
326 | struct vram_alloc *alloc; | |
327 | ||
328 | list_for_each_entry(rm, ®ion_list, list) { | |
329 | unsigned long start, end; | |
330 | ||
331 | DBG("checking region %lx %d\n", rm->paddr, rm->pages); | |
332 | ||
333 | if (region_mem_type(rm->paddr) != mtype) | |
334 | continue; | |
335 | ||
336 | start = rm->paddr; | |
337 | ||
338 | list_for_each_entry(alloc, &rm->alloc_list, list) { | |
339 | end = alloc->paddr; | |
340 | ||
341 | if (end - start >= pages << PAGE_SHIFT) | |
342 | goto found; | |
343 | ||
344 | start = alloc->paddr + (alloc->pages << PAGE_SHIFT); | |
345 | } | |
346 | ||
347 | end = rm->paddr + (rm->pages << PAGE_SHIFT); | |
348 | found: | |
349 | if (end - start < pages << PAGE_SHIFT) | |
350 | continue; | |
351 | ||
352 | DBG("found %lx, end %lx\n", start, end); | |
353 | ||
354 | alloc = omap_vram_create_allocation(rm, start, pages); | |
355 | if (alloc == NULL) | |
356 | return -ENOMEM; | |
357 | ||
358 | *paddr = start; | |
359 | ||
360 | _omap_vram_clear(start, pages); | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | return -ENOMEM; | |
366 | } | |
367 | ||
368 | int omap_vram_alloc(int mtype, size_t size, unsigned long *paddr) | |
369 | { | |
370 | unsigned pages; | |
371 | int r; | |
372 | ||
373 | BUG_ON(mtype > OMAP_VRAM_MEMTYPE_MAX || !size); | |
374 | ||
375 | DBG("alloc mem type %d size %d\n", mtype, size); | |
376 | ||
377 | size = PAGE_ALIGN(size); | |
378 | pages = size >> PAGE_SHIFT; | |
379 | ||
380 | mutex_lock(®ion_mutex); | |
381 | ||
382 | r = _omap_vram_alloc(mtype, pages, paddr); | |
383 | ||
384 | mutex_unlock(®ion_mutex); | |
385 | ||
386 | return r; | |
387 | } | |
388 | EXPORT_SYMBOL(omap_vram_alloc); | |
389 | ||
390 | void omap_vram_get_info(unsigned long *vram, | |
391 | unsigned long *free_vram, | |
392 | unsigned long *largest_free_block) | |
393 | { | |
394 | struct vram_region *vr; | |
395 | struct vram_alloc *va; | |
396 | ||
397 | *vram = 0; | |
398 | *free_vram = 0; | |
399 | *largest_free_block = 0; | |
400 | ||
401 | mutex_lock(®ion_mutex); | |
402 | ||
403 | list_for_each_entry(vr, ®ion_list, list) { | |
404 | unsigned free; | |
405 | unsigned long pa; | |
406 | ||
407 | pa = vr->paddr; | |
408 | *vram += vr->pages << PAGE_SHIFT; | |
409 | ||
410 | list_for_each_entry(va, &vr->alloc_list, list) { | |
411 | free = va->paddr - pa; | |
412 | *free_vram += free; | |
413 | if (free > *largest_free_block) | |
414 | *largest_free_block = free; | |
415 | pa = va->paddr + (va->pages << PAGE_SHIFT); | |
416 | } | |
417 | ||
418 | free = vr->paddr + (vr->pages << PAGE_SHIFT) - pa; | |
419 | *free_vram += free; | |
420 | if (free > *largest_free_block) | |
421 | *largest_free_block = free; | |
422 | } | |
423 | ||
424 | mutex_unlock(®ion_mutex); | |
425 | } | |
426 | EXPORT_SYMBOL(omap_vram_get_info); | |
427 | ||
428 | #if defined(CONFIG_DEBUG_FS) | |
429 | static int vram_debug_show(struct seq_file *s, void *unused) | |
430 | { | |
431 | struct vram_region *vr; | |
432 | struct vram_alloc *va; | |
433 | unsigned size; | |
434 | ||
435 | mutex_lock(®ion_mutex); | |
436 | ||
437 | list_for_each_entry(vr, ®ion_list, list) { | |
438 | size = vr->pages << PAGE_SHIFT; | |
439 | seq_printf(s, "%08lx-%08lx (%d bytes)\n", | |
440 | vr->paddr, vr->paddr + size - 1, | |
441 | size); | |
442 | ||
443 | list_for_each_entry(va, &vr->alloc_list, list) { | |
444 | size = va->pages << PAGE_SHIFT; | |
445 | seq_printf(s, " %08lx-%08lx (%d bytes)\n", | |
446 | va->paddr, va->paddr + size - 1, | |
447 | size); | |
448 | } | |
449 | } | |
450 | ||
451 | mutex_unlock(®ion_mutex); | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | static int vram_debug_open(struct inode *inode, struct file *file) | |
457 | { | |
458 | return single_open(file, vram_debug_show, inode->i_private); | |
459 | } | |
460 | ||
461 | static const struct file_operations vram_debug_fops = { | |
462 | .open = vram_debug_open, | |
463 | .read = seq_read, | |
464 | .llseek = seq_lseek, | |
465 | .release = single_release, | |
466 | }; | |
467 | ||
468 | static int __init omap_vram_create_debugfs(void) | |
469 | { | |
470 | struct dentry *d; | |
471 | ||
472 | d = debugfs_create_file("vram", S_IRUGO, NULL, | |
473 | NULL, &vram_debug_fops); | |
474 | if (IS_ERR(d)) | |
475 | return PTR_ERR(d); | |
476 | ||
477 | return 0; | |
478 | } | |
479 | #endif | |
480 | ||
481 | static __init int omap_vram_init(void) | |
482 | { | |
483 | int i; | |
484 | ||
485 | vram_initialized = 1; | |
486 | ||
487 | for (i = 0; i < postponed_cnt; i++) | |
488 | omap_vram_add_region(postponed_regions[i].paddr, | |
489 | postponed_regions[i].size); | |
490 | ||
491 | #ifdef CONFIG_DEBUG_FS | |
492 | if (omap_vram_create_debugfs()) | |
493 | pr_err("VRAM: Failed to create debugfs file\n"); | |
494 | #endif | |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
499 | arch_initcall(omap_vram_init); | |
500 | ||
501 | /* boottime vram alloc stuff */ | |
502 | ||
503 | /* set from board file */ | |
504 | static u32 omap_vram_sram_start __initdata; | |
505 | static u32 omap_vram_sram_size __initdata; | |
506 | ||
507 | /* set from board file */ | |
508 | static u32 omap_vram_sdram_start __initdata; | |
509 | static u32 omap_vram_sdram_size __initdata; | |
510 | ||
511 | /* set from kernel cmdline */ | |
512 | static u32 omap_vram_def_sdram_size __initdata; | |
513 | static u32 omap_vram_def_sdram_start __initdata; | |
514 | ||
5c1f96f4 | 515 | static int __init omap_vram_early_vram(char *p) |
afedec18 | 516 | { |
5c1f96f4 TW |
517 | omap_vram_def_sdram_size = memparse(p, &p); |
518 | if (*p == ',') | |
519 | omap_vram_def_sdram_start = simple_strtoul(p + 1, &p, 16); | |
520 | return 0; | |
afedec18 | 521 | } |
5c1f96f4 | 522 | early_param("vram", omap_vram_early_vram); |
afedec18 TV |
523 | |
524 | /* | |
525 | * Called from map_io. We need to call to this early enough so that we | |
526 | * can reserve the fixed SDRAM regions before VM could get hold of them. | |
527 | */ | |
528 | void __init omap_vram_reserve_sdram(void) | |
529 | { | |
530 | struct bootmem_data *bdata; | |
531 | unsigned long sdram_start, sdram_size; | |
532 | u32 paddr; | |
533 | u32 size = 0; | |
534 | ||
535 | /* cmdline arg overrides the board file definition */ | |
536 | if (omap_vram_def_sdram_size) { | |
537 | size = omap_vram_def_sdram_size; | |
538 | paddr = omap_vram_def_sdram_start; | |
539 | } | |
540 | ||
541 | if (!size) { | |
542 | size = omap_vram_sdram_size; | |
543 | paddr = omap_vram_sdram_start; | |
544 | } | |
545 | ||
546 | #ifdef CONFIG_OMAP2_VRAM_SIZE | |
547 | if (!size) { | |
548 | size = CONFIG_OMAP2_VRAM_SIZE * 1024 * 1024; | |
549 | paddr = 0; | |
550 | } | |
551 | #endif | |
552 | ||
553 | if (!size) | |
554 | return; | |
555 | ||
556 | size = PAGE_ALIGN(size); | |
557 | ||
558 | bdata = NODE_DATA(0)->bdata; | |
559 | sdram_start = bdata->node_min_pfn << PAGE_SHIFT; | |
560 | sdram_size = (bdata->node_low_pfn << PAGE_SHIFT) - sdram_start; | |
561 | ||
562 | if (paddr) { | |
563 | if ((paddr & ~PAGE_MASK) || paddr < sdram_start || | |
564 | paddr + size > sdram_start + sdram_size) { | |
565 | pr_err("Illegal SDRAM region for VRAM\n"); | |
566 | return; | |
567 | } | |
568 | ||
569 | if (reserve_bootmem(paddr, size, BOOTMEM_EXCLUSIVE) < 0) { | |
570 | pr_err("FB: failed to reserve VRAM\n"); | |
571 | return; | |
572 | } | |
573 | } else { | |
574 | if (size > sdram_size) { | |
575 | pr_err("Illegal SDRAM size for VRAM\n"); | |
576 | return; | |
577 | } | |
578 | ||
579 | paddr = virt_to_phys(alloc_bootmem_pages(size)); | |
580 | BUG_ON(paddr & ~PAGE_MASK); | |
581 | } | |
582 | ||
583 | omap_vram_add_region(paddr, size); | |
584 | ||
585 | pr_info("Reserving %u bytes SDRAM for VRAM\n", size); | |
586 | } | |
587 | ||
588 | /* | |
589 | * Called at sram init time, before anything is pushed to the SRAM stack. | |
590 | * Because of the stack scheme, we will allocate everything from the | |
591 | * start of the lowest address region to the end of SRAM. This will also | |
592 | * include padding for page alignment and possible holes between regions. | |
593 | * | |
594 | * As opposed to the SDRAM case, we'll also do any dynamic allocations at | |
595 | * this point, since the driver built as a module would have problem with | |
596 | * freeing / reallocating the regions. | |
597 | */ | |
598 | unsigned long __init omap_vram_reserve_sram(unsigned long sram_pstart, | |
599 | unsigned long sram_vstart, | |
600 | unsigned long sram_size, | |
601 | unsigned long pstart_avail, | |
602 | unsigned long size_avail) | |
603 | { | |
604 | unsigned long pend_avail; | |
605 | unsigned long reserved; | |
606 | u32 paddr; | |
607 | u32 size; | |
608 | ||
609 | paddr = omap_vram_sram_start; | |
610 | size = omap_vram_sram_size; | |
611 | ||
612 | if (!size) | |
613 | return 0; | |
614 | ||
615 | reserved = 0; | |
616 | pend_avail = pstart_avail + size_avail; | |
617 | ||
618 | if (!paddr) { | |
619 | /* Dynamic allocation */ | |
620 | if ((size_avail & PAGE_MASK) < size) { | |
621 | pr_err("Not enough SRAM for VRAM\n"); | |
622 | return 0; | |
623 | } | |
624 | size_avail = (size_avail - size) & PAGE_MASK; | |
625 | paddr = pstart_avail + size_avail; | |
626 | } | |
627 | ||
628 | if (paddr < sram_pstart || | |
629 | paddr + size > sram_pstart + sram_size) { | |
630 | pr_err("Illegal SRAM region for VRAM\n"); | |
631 | return 0; | |
632 | } | |
633 | ||
634 | /* Reserve everything above the start of the region. */ | |
635 | if (pend_avail - paddr > reserved) | |
636 | reserved = pend_avail - paddr; | |
637 | size_avail = pend_avail - reserved - pstart_avail; | |
638 | ||
639 | omap_vram_add_region(paddr, size); | |
640 | ||
641 | if (reserved) | |
642 | pr_info("Reserving %lu bytes SRAM for VRAM\n", reserved); | |
643 | ||
644 | return reserved; | |
645 | } | |
646 | ||
647 | void __init omap_vram_set_sdram_vram(u32 size, u32 start) | |
648 | { | |
649 | omap_vram_sdram_start = start; | |
650 | omap_vram_sdram_size = size; | |
651 | } | |
652 | ||
653 | void __init omap_vram_set_sram_vram(u32 size, u32 start) | |
654 | { | |
655 | omap_vram_sram_start = start; | |
656 | omap_vram_sram_size = size; | |
657 | } |