package/boot/uboot-oxnas/files/common/spl/spl_block.c

   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 */