LXR uboot/common/spl/spl

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2016
   4 * Xilinx, Inc.
   5 *
   6 * (C) Copyright 2016
   7 * Toradex AG
   8 *
   9 * Michal Simek <michal.simek@xilinx.com>
  10 * Stefan Agner <stefan.agner@toradex.com>
  11 */
  12#include <common.h>
  13#include <binman_sym.h>
  14#include <image.h>
  15#include <log.h>
  16#include <mapmem.h>
  17#include <spl.h>
  18#include <linux/libfdt.h>
  19
  20#ifndef CONFIG_SPL_LOAD_FIT_ADDRESS
  21# define CONFIG_SPL_LOAD_FIT_ADDRESS    0
  22#endif
  23
  24static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
  25                               ulong count, void *buf)
  26{
  27        debug("%s: sector %lx, count %lx, buf %lx\n",
  28              __func__, sector, count, (ulong)buf);
  29        memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count);
  30        return count;
  31}
  32
  33static int spl_ram_load_image(struct spl_image_info *spl_image,
  34                              struct spl_boot_device *bootdev)
  35{
  36        struct image_header *header;
  37
  38        header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS;
  39
  40#if CONFIG_IS_ENABLED(DFU)
  41        if (bootdev->boot_device == BOOT_DEVICE_DFU)
  42                spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0");
  43#endif
  44
  45        if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
  46            image_get_magic(header) == FDT_MAGIC) {
  47                struct spl_load_info load;
  48
  49                debug("Found FIT\n");
  50                load.bl_len = 1;
  51                load.read = spl_ram_load_read;
  52                spl_load_simple_fit(spl_image, &load, 0, header);
  53        } else {
  54                ulong u_boot_pos = binman_sym(ulong, u_boot_any, image_pos);
  55
  56                debug("Legacy image\n");
  57                /*
  58                 * Get the header.  It will point to an address defined by
  59                 * handoff which will tell where the image located inside
  60                 * the flash.
  61                 */
  62                debug("u_boot_pos = %lx\n", u_boot_pos);
  63                if (u_boot_pos == BINMAN_SYM_MISSING) {
  64                        /*
  65                         * No binman support or no information. For now, fix it
  66                         * to the address pointed to by U-Boot.
  67                         */
  68                        u_boot_pos = (ulong)spl_get_load_buffer(-sizeof(*header),
  69                                                                sizeof(*header));
  70                }
  71                header = (struct image_header *)map_sysmem(u_boot_pos, 0);
  72
  73                spl_parse_image_header(spl_image, header);
  74        }
  75
  76        return 0;
  77}
  78#if CONFIG_IS_ENABLED(RAM_DEVICE)
  79SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image);
  80#endif
  81#if CONFIG_IS_ENABLED(DFU)
  82SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image);
  83#endif
  84
  85
  86