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 ulong spl_nor_load_read(struct spl_load_info *load, ulong sector,
  10                                ulong count, void *buf)
  11 {
  12         debug("%s: sector %lx, count %lx, buf %p\n",
  13               __func__, sector, count, buf);
  14         memcpy(buf, (void *)sector, count);
  15
  16         return count;
  17 }
  18
  19 unsigned long __weak spl_nor_get_uboot_base(void)
  20 {
  21         return CONFIG_SYS_UBOOT_BASE;
  22 }
  23
  24 static int spl_nor_load_image(struct spl_image_info *spl_image,
  25                               struct spl_boot_device *bootdev)
  26 {
  27         int ret;
  28         __maybe_unused const struct image_header *header;
  29         __maybe_unused struct spl_load_info load;
  30
  31         /*
  32          * Loading of the payload to SDRAM is done with skipping of
  33          * the mkimage header in this SPL NOR driver
  34          */
  35         spl_image->flags |= SPL_COPY_PAYLOAD_ONLY;
  36
  37 #ifdef CONFIG_SPL_OS_BOOT
  38         if (!spl_start_uboot()) {
  39                 /*
  40                  * Load Linux from its location in NOR flash to its defined
  41                  * location in SDRAM
  42                  */
  43                 header = (const struct image_header *)CONFIG_SYS_OS_BASE;
  44 #ifdef CONFIG_SPL_LOAD_FIT
  45                 if (image_get_magic(header) == FDT_MAGIC) {
  46                         debug("Found FIT\n");
  47                         load.bl_len = 1;
  48                         load.read = spl_nor_load_read;
  49
  50                         ret = spl_load_simple_fit(spl_image, &load,
  51                                                   CONFIG_SYS_OS_BASE,
  52                                                   (void *)header);
  53
  54 #if defined CONFIG_SYS_SPL_ARGS_ADDR && defined CONFIG_CMD_SPL_NOR_OFS
  55                         memcpy((void *)CONFIG_SYS_SPL_ARGS_ADDR,
  56                                (void *)CONFIG_CMD_SPL_NOR_OFS,
  57                                CONFIG_CMD_SPL_WRITE_SIZE);
  58 #endif
  59                         return ret;
  60                 }
  61 #endif
  62                 if (image_get_os(header) == IH_OS_LINUX) {
  63                         /* happy - was a Linux */
  64
  65                         ret = spl_parse_image_header(spl_image, header);
  66                         if (ret)
  67                                 return ret;
  68
  69                         memcpy((void *)spl_image->load_addr,
  70                                (void *)(CONFIG_SYS_OS_BASE +
  71                                         sizeof(struct image_header)),
  72                                spl_image->size);
  73 #ifdef CONFIG_SYS_FDT_BASE
  74                         spl_image->arg = (void *)CONFIG_SYS_FDT_BASE;
  75 #endif
  76
  77                         return 0;
  78                 } else {
  79                         puts("The Expected Linux image was not found.\n"
  80                              "Please check your NOR configuration.\n"
  81                              "Trying to start u-boot now...\n");
  82                 }
  83         }
  84 #endif
  85
  86         /*
  87          * Load real U-Boot from its location in NOR flash to its
  88          * defined location in SDRAM
  89          */
  90 #ifdef CONFIG_SPL_LOAD_FIT
  91         header = (const struct image_header *)spl_nor_get_uboot_base();
  92         if (image_get_magic(header) == FDT_MAGIC) {
  93                 debug("Found FIT format U-Boot\n");
  94                 load.bl_len = 1;
  95                 load.read = spl_nor_load_read;
  96                 ret = spl_load_simple_fit(spl_image, &load,
  97                                           spl_nor_get_uboot_base(),
  98                                           (void *)header);
  99
 100                 return ret;
 101         }
 102 #endif
 103         if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
 104                 load.bl_len = 1;
 105                 load.read = spl_nor_load_read;
 106                 return spl_load_imx_container(spl_image, &load,
 107                                               spl_nor_get_uboot_base());
 108         }
 109
 110         ret = spl_parse_image_header(spl_image,
 111                         (const struct image_header *)spl_nor_get_uboot_base());
 112         if (ret)
 113                 return ret;
 114
 115         memcpy((void *)(unsigned long)spl_image->load_addr,
 116                (void *)(spl_nor_get_uboot_base() + sizeof(struct image_header)),
 117                spl_image->size);
 118
 119         return 0;
 120 }
 121 SPL_LOAD_IMAGE_METHOD("NOR", 0, BOOT_DEVICE_NOR, spl_nor_load_image);