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                         /*
  43                          * Copy DT blob (fdt) to SDRAM. Passing pointer to
  44                          * flash doesn't work
  45                          */
  46                         memcpy((void *)CONFIG_SYS_SPL_ARGS_ADDR,
  47                                (void *)(CONFIG_SYS_FDT_BASE),
  48                                CONFIG_SYS_FDT_SIZE);
  49
  50                         return 0;
  51                 } else {
  52                         puts("The Expected Linux image was not found.\n"
  53                              "Please check your NOR configuration.\n"
  54                              "Trying to start u-boot now...\n");
  55                 }
  56         }
  57 #endif
  58
  59         /*
  60          * Load real U-Boot from its location in NOR flash to its
  61          * defined location in SDRAM
  62          */
  63         ret = spl_parse_image_header(spl_image,
  64                         (const struct image_header *)CONFIG_SYS_UBOOT_BASE);
  65         if (ret)
  66                 return ret;
  67
  68         memcpy((void *)(unsigned long)spl_image->load_addr,
  69                (void *)(CONFIG_SYS_UBOOT_BASE + sizeof(struct image_header)),
  70                spl_image->size);
  71
  72         return 0;
  73 }
  74 SPL_LOAD_IMAGE_METHOD("NOR", 0, BOOT_DEVICE_NOR, spl_nor_load_image);