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1 office 1 /*
2 * (C) Copyright 2013
3 *
4 * Ma Haijun <mahaijuns@gmail.com>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24 #include <common.h>
25 #include <spl.h>
26 #include <asm/u-boot.h>
27 #include <asm/utils.h>
28 #include <version.h>
29 #include <part.h>
30 #include <fat.h>
31 #include <ext4fs.h>
32  
33 /* should be implemented by board */
34 extern void spl_block_device_init(void);
35  
36 block_dev_desc_t * spl_get_block_device(void)
37 {
38 block_dev_desc_t * device;
39  
40 spl_block_device_init();
41  
42 device = get_dev(CONFIG_SPL_BLOCKDEV_INTERFACE, CONFIG_SPL_BLOCKDEV_ID);
43 if (!device) {
44 printf("blk device %s%d not exists\n",
45 CONFIG_SPL_BLOCKDEV_INTERFACE,
46 CONFIG_SPL_BLOCKDEV_ID);
47 hang();
48 }
49  
50 return device;
51 }
52  
53 #ifdef CONFIG_SPL_FAT_SUPPORT
54 static int block_load_image_fat(const char *filename)
55 {
56 int err;
57 struct image_header *header;
58  
59 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
60 sizeof(struct image_header));
61  
62 err = file_fat_read(filename, header, sizeof(struct image_header));
63 if (err <= 0)
64 goto end;
65  
66 spl_parse_image_header(header);
67  
68 err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0);
69  
70 end:
71 if (err <= 0)
72 printf("spl: error reading image %s, err - %d\n",
73 filename, err);
74  
75 return (err <= 0);
76 }
77  
78 #ifdef CONFIG_SPL_OS_BOOT
79 static int block_load_image_fat_os(void)
80 {
81 int err;
82  
83 err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME,
84 (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
85 if (err <= 0) {
86 return -1;
87 }
88  
89 return block_load_image_fat(CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
90 }
91 #endif
92  
93 void spl_block_load_image(void)
94 {
95 int err;
96 block_dev_desc_t * device;
97  
98 device = spl_get_block_device();
99 err = fat_register_device(device, CONFIG_BLOCKDEV_FAT_BOOT_PARTITION);
100 if (err) {
101 printf("spl: fat register err - %d\n", err);
102 hang();
103 }
104 #ifdef CONFIG_SPL_OS_BOOT
105 if (spl_start_uboot() || block_load_image_fat_os())
106 #endif
107 {
108 err = block_load_image_fat(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
109 if (err)
110 hang();
111 }
112 }
113 #elif defined(CONFIG_SPL_EXT4_SUPPORT) /* end CONFIG_SPL_FAT_SUPPORT */
114 static int block_load_image_ext4(const char *filename)
115 {
116 int err;
117 struct image_header *header;
118  
119 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
120 sizeof(struct image_header));
121  
122 err = ext4_read_file(filename, header, 0, sizeof(struct image_header));
123 if (err <= 0)
124 goto end;
125  
126 spl_parse_image_header(header);
127  
128 err = ext4_read_file(filename, (u8 *)spl_image.load_addr, 0, 0);
129  
130 end:
131 return (err <= 0);
132 }
133  
134 #ifdef CONFIG_SPL_OS_BOOT
135 static int block_load_image_ext4_os(void)
136 {
137 int err;
138  
139 err = ext4_read_file(CONFIG_SPL_EXT4_LOAD_ARGS_NAME,
140 (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0, 0);
141 if (err <= 0) {
142 return -1;
143 }
144  
145 return block_load_image_ext4(CONFIG_SPL_EXT4_LOAD_KERNEL_NAME);
146 }
147 #endif
148  
149 void spl_block_load_image(void)
150 {
151 int err;
152 block_dev_desc_t * device;
153  
154 device = spl_get_block_device();
155 err = ext4_register_device(device, CONFIG_BLOCKDEV_EXT4_BOOT_PARTITION);
156 if (err) {
157 hang();
158 }
159 #ifdef CONFIG_SPL_OS_BOOT
160 if (spl_start_uboot() || block_load_image_ext4_os())
161 #endif
162 {
163 err = block_load_image_ext4(CONFIG_SPL_EXT4_LOAD_PAYLOAD_NAME);
164 if (err)
165 hang();
166 }
167 }
168 #else /* end CONFIG_SPL_EXT4_SUPPORT */
169 static int block_load_image_raw(block_dev_desc_t * device, lbaint_t sector)
170 {
171 int n;
172 u32 image_size_sectors;
173 struct image_header *header;
174  
175 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
176 sizeof(struct image_header));
177  
178 /* read image header to find the image size & load address */
179 n = device->block_read(device->dev, sector, 1, header);
180  
181 if (n != 1) {
182 printf("spl: blk read err\n");
183 return 1;
184 }
185  
186 spl_parse_image_header(header);
187  
188 /* convert size to sectors - round up */
189 image_size_sectors = (spl_image.size + 512 - 1) / 512;
190 n = device->block_read(device->dev, sector, image_size_sectors,
191 (void *)spl_image.load_addr);
192  
193 if (n != image_size_sectors) {
194 printf("spl: blk read err\n");
195 return 1;
196 }
197 return 0;
198 }
199  
200 #ifdef CONFIG_SPL_OS_BOOT
201 static int block_load_image_raw_os(block_dev_desc_t * device)
202 {
203 int n;
204  
205 n = device->block_read(device->dev, CONFIG_SYS_BLOCK_RAW_MODE_ARGS_SECTOR,
206 CONFIG_SYS_BLOCK_RAW_MODE_ARGS_SECTORS,
207 (u32 *)CONFIG_SYS_SPL_ARGS_ADDR);
208 /* flush cache after read */
209 flush_cache(addr, CONFIG_SYS_BLOCK_RAW_MODE_ARGS_SECTORS * 512);
210  
211 if (n != CONFIG_SYS_BLOCK_RAW_MODE_ARGS_SECTORS) {
212 printf("args blk read error\n");
213 return -1;
214 }
215  
216 return block_load_image_raw(device, CONFIG_SYS_BLOCK_RAW_MODE_KERNEL_SECTOR);
217 }
218 #endif
219  
220 void spl_block_load_image(void)
221 {
222 int err;
223 block_dev_desc_t * device;
224  
225 device = spl_get_block_device();
226 #ifdef CONFIG_SPL_OS_BOOT
227 if (spl_start_uboot() || block_load_image_raw_os(device))
228 #endif
229 {
230 err = block_load_image_raw(device,
231 CONFIG_SYS_BLOCK_RAW_MODE_U_BOOT_SECTOR);
232 if (err)
233 hang();
234 }
235 }
236 #endif /* CONFIG_SPL_FAT_SUPPORT */