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 #include <linux/omapfb.h>
19
20 #include <plat/common.h>
21 #include <plat/board.h>
22 #include <plat/vram.h>
23 #include <plat/dsp.h>
24
25 #include <plat/omap-secure.h>
26
27
28 #define NO_LENGTH_CHECK 0xffffffff
29
30 struct omap_board_config_kernel *omap_board_config __initdata;
31 int omap_board_config_size;
32
get_config(u16 tag,size_t len,int skip,size_t * len_out)33 static const void *__init get_config(u16 tag, size_t len,
34 int skip, size_t *len_out)
35 {
36 struct omap_board_config_kernel *kinfo = NULL;
37 int i;
38
39 /* Try to find the config from the board-specific structures
40 * in the kernel. */
41 for (i = 0; i < omap_board_config_size; i++) {
42 if (omap_board_config[i].tag == tag) {
43 if (skip == 0) {
44 kinfo = &omap_board_config[i];
45 break;
46 } else {
47 skip--;
48 }
49 }
50 }
51 if (kinfo == NULL)
52 return NULL;
53 return kinfo->data;
54 }
55
__omap_get_config(u16 tag,size_t len,int nr)56 const void *__init __omap_get_config(u16 tag, size_t len, int nr)
57 {
58 return get_config(tag, len, nr, NULL);
59 }
60
omap_get_var_config(u16 tag,size_t * len)61 const void *__init omap_get_var_config(u16 tag, size_t *len)
62 {
63 return get_config(tag, NO_LENGTH_CHECK, 0, len);
64 }
65
omap_reserve(void)66 void __init omap_reserve(void)
67 {
68 omapfb_reserve_sdram_memblock();
69 omap_vram_reserve_sdram_memblock();
70 omap_dsp_reserve_sdram_memblock();
71 omap_secure_ram_reserve_memblock();
72 omap_barrier_reserve_memblock();
73 }
74
omap_init_consistent_dma_size(void)75 void __init omap_init_consistent_dma_size(void)
76 {
77 #ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
78 init_consistent_dma_size(CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE << 20);
79 #endif
80 }
81