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/omapfb.h>
18
19 #include <plat/common.h>
20 #include <plat/board.h>
21 #include <plat/vram.h>
22 #include <plat/dsp.h>
23
24
25 #define NO_LENGTH_CHECK 0xffffffff
26
27 struct omap_board_config_kernel *omap_board_config __initdata;
28 int omap_board_config_size;
29
get_config(u16 tag,size_t len,int skip,size_t * len_out)30 static const void *__init get_config(u16 tag, size_t len,
31 int skip, size_t *len_out)
32 {
33 struct omap_board_config_kernel *kinfo = NULL;
34 int i;
35
36 /* Try to find the config from the board-specific structures
37 * in the kernel. */
38 for (i = 0; i < omap_board_config_size; i++) {
39 if (omap_board_config[i].tag == tag) {
40 if (skip == 0) {
41 kinfo = &omap_board_config[i];
42 break;
43 } else {
44 skip--;
45 }
46 }
47 }
48 if (kinfo == NULL)
49 return NULL;
50 return kinfo->data;
51 }
52
__omap_get_config(u16 tag,size_t len,int nr)53 const void *__init __omap_get_config(u16 tag, size_t len, int nr)
54 {
55 return get_config(tag, len, nr, NULL);
56 }
57
omap_get_var_config(u16 tag,size_t * len)58 const void *__init omap_get_var_config(u16 tag, size_t *len)
59 {
60 return get_config(tag, NO_LENGTH_CHECK, 0, len);
61 }
62
omap_reserve(void)63 void __init omap_reserve(void)
64 {
65 omapfb_reserve_sdram_memblock();
66 omap_vram_reserve_sdram_memblock();
67 omap_dsp_reserve_sdram_memblock();
68 }
69