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