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spl_mmc: Make FAT checks / calls guarded with CONFIG_SPL_FAT_SUPPORT
[karo-tx-uboot.git] / arch / arm / cpu / armv7 / omap-common / spl_mmc.c
1 /*
2  * (C) Copyright 2010
3  * Texas Instruments, <www.ti.com>
4  *
5  * Aneesh V <aneesh@ti.com>
6  *
7  * See file CREDITS for list of people who contributed to this
8  * project.
9  *
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License as
12  * published by the Free Software Foundation; either version 2 of
13  * the License, or (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23  * MA 02111-1307 USA
24  */
25 #include <common.h>
26 #include <asm/u-boot.h>
27 #include <asm/utils.h>
28 #include <asm/arch/sys_proto.h>
29 #include <mmc.h>
30 #include <fat.h>
31 #include <version.h>
32 #include <asm/omap_common.h>
33 #include <asm/arch/mmc_host_def.h>
34
35 DECLARE_GLOBAL_DATA_PTR;
36
37 #ifdef CONFIG_GENERIC_MMC
38 int board_mmc_init(bd_t *bis)
39 {
40         switch (omap_boot_device()) {
41         case BOOT_DEVICE_MMC1:
42                 omap_mmc_init(0, 0, 0);
43                 break;
44         case BOOT_DEVICE_MMC2:
45         case BOOT_DEVICE_MMC2_2:
46                 omap_mmc_init(1, 0, 0);
47                 break;
48         }
49         return 0;
50 }
51 #endif
52
53 static void mmc_load_image_raw(struct mmc *mmc)
54 {
55         u32 image_size_sectors, err;
56         const struct image_header *header;
57
58         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
59                                                 sizeof(struct image_header));
60
61         /* read image header to find the image size & load address */
62         err = mmc->block_dev.block_read(0,
63                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 1,
64                         (void *)header);
65
66         if (err <= 0)
67                 goto end;
68
69         spl_parse_image_header(header);
70
71         /* convert size to sectors - round up */
72         image_size_sectors = (spl_image.size + MMCSD_SECTOR_SIZE - 1) /
73                                 MMCSD_SECTOR_SIZE;
74
75         /* Read the header too to avoid extra memcpy */
76         err = mmc->block_dev.block_read(0,
77                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR,
78                         image_size_sectors, (void *)spl_image.load_addr);
79
80 end:
81         if (err <= 0) {
82                 printf("spl: mmc blk read err - %d\n", err);
83                 hang();
84         }
85 }
86
87 #ifdef CONFIG_SPL_FAT_SUPPORT
88 static void mmc_load_image_fat(struct mmc *mmc)
89 {
90         s32 err;
91         struct image_header *header;
92
93         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
94                                                 sizeof(struct image_header));
95
96         err = fat_register_device(&mmc->block_dev,
97                                 CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION);
98         if (err) {
99                 printf("spl: fat register err - %d\n", err);
100                 hang();
101         }
102
103         err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME,
104                                 (u8 *)header, sizeof(struct image_header));
105         if (err <= 0)
106                 goto end;
107
108         spl_parse_image_header(header);
109
110         err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME,
111                                 (u8 *)spl_image.load_addr, 0);
112
113 end:
114         if (err <= 0) {
115                 printf("spl: error reading image %s, err - %d\n",
116                         CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, err);
117                 hang();
118         }
119 }
120 #endif
121
122 void spl_mmc_load_image(void)
123 {
124         struct mmc *mmc;
125         int err;
126         u32 boot_mode;
127
128         mmc_initialize(gd->bd);
129         /* We register only one device. So, the dev id is always 0 */
130         mmc = find_mmc_device(0);
131         if (!mmc) {
132                 puts("spl: mmc device not found!!\n");
133                 hang();
134         }
135
136         err = mmc_init(mmc);
137         if (err) {
138                 printf("spl: mmc init failed: err - %d\n", err);
139                 hang();
140         }
141         boot_mode = omap_boot_mode();
142         if (boot_mode == MMCSD_MODE_RAW) {
143                 debug("boot mode - RAW\n");
144                 mmc_load_image_raw(mmc);
145 #ifdef CONFIG_SPL_FAT_SUPPORT
146         } else if (boot_mode == MMCSD_MODE_FAT) {
147                 debug("boot mode - FAT\n");
148                 mmc_load_image_fat(mmc);
149 #endif
150         } else {
151                 puts("spl: wrong MMC boot mode\n");
152                 hang();
153         }
154 }