common/spl/spl_nor.c

   1 /*
   2  * Copyright (C) 2012 Stefan Roese <sr@denx.de>
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  */
  17
  18 #include <common.h>
  19 #include <spl.h>
  20
  21 void spl_nor_load_image(void)
  22 {
  23         /*
  24          * Loading of the payload to SDRAM is done with skipping of
  25          * the mkimage header in this SPL NOR driver
  26          */
  27         spl_image.flags |= SPL_COPY_PAYLOAD_ONLY;
  28
  29         if (spl_start_uboot()) {
  30                 /*
  31                  * Load real U-Boot from its location in NOR flash to its
  32                  * defined location in SDRAM
  33                  */
  34                 spl_parse_image_header(
  35                         (const struct image_header *)CONFIG_SYS_UBOOT_BASE);
  36
  37                 memcpy((void *)spl_image.load_addr,
  38                        (void *)(CONFIG_SYS_UBOOT_BASE +
  39                                 sizeof(struct image_header)),
  40                        spl_image.size);
  41         } else {
  42                 /*
  43                  * Load Linux from its location in NOR flash to its defined
  44                  * location in SDRAM
  45                  */
  46                 spl_parse_image_header(
  47                         (const struct image_header *)CONFIG_SYS_OS_BASE);
  48
  49                 memcpy((void *)spl_image.load_addr,
  50                        (void *)(CONFIG_SYS_OS_BASE +
  51                                 sizeof(struct image_header)),
  52                        spl_image.size);
  53
  54                 /*
  55                  * Copy DT blob (fdt) to SDRAM. Passing pointer to flash
  56                  * doesn't work (16 KiB should be enough for DT)
  57                  */
  58                 memcpy((void *)CONFIG_SYS_SPL_ARGS_ADDR,
  59                        (void *)(CONFIG_SYS_FDT_BASE),
  60                        (16 << 10));
  61         }
  62 }