common/spl/spl_nor.c

   1 /*
   2  * Copyright (C) 2012 Stefan Roese <sr@denx.de>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <spl.h>
   9
  10 static int spl_nor_load_image(struct spl_image_info *spl_image,
  11                               struct spl_boot_device *bootdev)
  12 {
  13         int ret;
  14         /*
  15          * Loading of the payload to SDRAM is done with skipping of
  16          * the mkimage header in this SPL NOR driver
  17          */
  18         spl_image->flags |= SPL_COPY_PAYLOAD_ONLY;
  19
  20 #ifdef CONFIG_SPL_OS_BOOT
  21         if (!spl_start_uboot()) {
  22                 const struct image_header *header;
  23
  24                 /*
  25                  * Load Linux from its location in NOR flash to its defined
  26                  * location in SDRAM
  27                  */
  28                 header = (const struct image_header *)CONFIG_SYS_OS_BASE;
  29
  30                 if (image_get_os(header) == IH_OS_LINUX) {
  31                         /* happy - was a Linux */
  32
  33                         ret = spl_parse_image_header(spl_image, header);
  34                         if (ret)
  35                                 return ret;
  36
  37                         memcpy((void *)spl_image->load_addr,
  38                                (void *)(CONFIG_SYS_OS_BASE +
  39                                         sizeof(struct image_header)),
  40                                spl_image->size);
  41
  42                         spl_image->arg = (void *)CONFIG_SYS_FDT_BASE;
  43
  44                         return 0;
  45                 } else {
  46                         puts("The Expected Linux image was not found.\n"
  47                              "Please check your NOR configuration.\n"
  48                              "Trying to start u-boot now...\n");
  49                 }
  50         }
  51 #endif
  52
  53         /*
  54          * Load real U-Boot from its location in NOR flash to its
  55          * defined location in SDRAM
  56          */
  57         ret = spl_parse_image_header(spl_image,
  58                         (const struct image_header *)CONFIG_SYS_UBOOT_BASE);
  59         if (ret)
  60                 return ret;
  61
  62         memcpy((void *)(unsigned long)spl_image->load_addr,
  63                (void *)(CONFIG_SYS_UBOOT_BASE + sizeof(struct image_header)),
  64                spl_image->size);
  65
  66         return 0;
  67 }
  68 SPL_LOAD_IMAGE_METHOD("NOR", 0, BOOT_DEVICE_NOR, spl_nor_load_image);