1 /*
2 * linux/arch/arm/plat-omap/common.c
3 *
4 * Code common to all OMAP machines.
5 * The file is created by Tony Lindgren <tony@atomide.com>
6 *
7 * Copyright (C) 2009 Texas Instruments
8 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/io.h>
17 #include <linux/dma-mapping.h>
18
19 #include <plat/common.h>
20 #include <plat/board.h>
21 #include <plat/vram.h>
22 #include <plat/dsp.h>
23
24 #include <plat/omap-secure.h>
25
26
27 #define NO_LENGTH_CHECK 0xffffffff
28
29 struct omap_board_config_kernel *omap_board_config __initdata;
30 int omap_board_config_size;
31
get_config(u16 tag,size_t len,int skip,size_t * len_out)32 static const void *__init get_config(u16 tag, size_t len,
33 int skip, size_t *len_out)
34 {
35 struct omap_board_config_kernel *kinfo = NULL;
36 int i;
37
38 /* Try to find the config from the board-specific structures
39 * in the kernel. */
40 for (i = 0; i < omap_board_config_size; i++) {
41 if (omap_board_config[i].tag == tag) {
42 if (skip == 0) {
43 kinfo = &omap_board_config[i];
44 break;
45 } else {
46 skip--;
47 }
48 }
49 }
50 if (kinfo == NULL)
51 return NULL;
52 return kinfo->data;
53 }
54
__omap_get_config(u16 tag,size_t len,int nr)55 const void *__init __omap_get_config(u16 tag, size_t len, int nr)
56 {
57 return get_config(tag, len, nr, NULL);
58 }
59
omap_get_var_config(u16 tag,size_t * len)60 const void *__init omap_get_var_config(u16 tag, size_t *len)
61 {
62 return get_config(tag, NO_LENGTH_CHECK, 0, len);
63 }
64
omap_reserve(void)65 void __init omap_reserve(void)
66 {
67 omap_vram_reserve_sdram_memblock();
68 omap_dsp_reserve_sdram_memblock();
69 omap_secure_ram_reserve_memblock();
70 omap_barrier_reserve_memblock();
71 }
72
omap_init_consistent_dma_size(void)73 void __init omap_init_consistent_dma_size(void)
74 {
75 #ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
76 init_consistent_dma_size(CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE << 20);
77 #endif
78 }
79