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MMC: DWMMC: Fix FIFO_DEPTH calculation
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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 <spl.h>
27 #include <asm/u-boot.h>
28 #include <asm/utils.h>
29 #include <mmc.h>
30 #include <fat.h>
31 #include <version.h>
32
33 DECLARE_GLOBAL_DATA_PTR;
34
35 static void mmc_load_image_raw(struct mmc *mmc)
36 {
37         unsigned long err;
38         u32 image_size_sectors;
39         struct image_header *header;
40
41         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
42                                                 sizeof(struct image_header));
43
44         /* read image header to find the image size & load address */
45         err = mmc->block_dev.block_read(0,
46                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 1,
47                         header);
48
49         if (err == 0)
50                 goto end;
51
52         spl_parse_image_header(header);
53
54         /* convert size to sectors - round up */
55         image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
56                                 mmc->read_bl_len;
57
58         /* Read the header too to avoid extra memcpy */
59         err = mmc->block_dev.block_read(0,
60                         CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR,
61                         image_size_sectors, (void *)spl_image.load_addr);
62
63 end:
64         if (err == 0) {
65                 printf("spl: mmc blk read err - %lu\n", err);
66                 hang();
67         }
68 }
69
70 #ifdef CONFIG_SPL_FAT_SUPPORT
71 static void mmc_load_image_fat(struct mmc *mmc)
72 {
73         int err;
74         struct image_header *header;
75
76         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
77                                                 sizeof(struct image_header));
78
79         err = fat_register_device(&mmc->block_dev,
80                                 CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION);
81         if (err) {
82                 printf("spl: fat register err - %d\n", err);
83                 hang();
84         }
85
86         err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME,
87                                 header, sizeof(struct image_header));
88         if (err <= 0)
89                 goto end;
90
91         spl_parse_image_header(header);
92
93         err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME,
94                                 (u8 *)spl_image.load_addr, 0);
95
96 end:
97         if (err <= 0) {
98                 printf("spl: error reading image %s, err - %d\n",
99                         CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, err);
100                 hang();
101         }
102 }
103 #endif
104
105 void spl_mmc_load_image(void)
106 {
107         struct mmc *mmc;
108         int err;
109         u32 boot_mode;
110
111         mmc_initialize(gd->bd);
112         /* We register only one device. So, the dev id is always 0 */
113         mmc = find_mmc_device(0);
114         if (!mmc) {
115                 puts("spl: mmc device not found!!\n");
116                 hang();
117         }
118
119         err = mmc_init(mmc);
120         if (err) {
121                 printf("spl: mmc init failed: err - %d\n", err);
122                 hang();
123         }
124         boot_mode = spl_boot_mode();
125         if (boot_mode == MMCSD_MODE_RAW) {
126                 debug("boot mode - RAW\n");
127                 mmc_load_image_raw(mmc);
128 #ifdef CONFIG_SPL_FAT_SUPPORT
129         } else if (boot_mode == MMCSD_MODE_FAT) {
130                 debug("boot mode - FAT\n");
131                 mmc_load_image_fat(mmc);
132 #endif
133         } else {
134                 puts("spl: wrong MMC boot mode\n");
135                 hang();
136         }
137 }