git.sur5r.net Git - u-boot/blob - common/spl/spl_nor.c

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