board/compulab/common/splash.c

   1 /*
   2  * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
   3  *
   4  * Authors: Igor Grinberg <grinberg@compulab.co.il>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <nand.h>
  11 #include <bmp_layout.h>
  12
  13 DECLARE_GLOBAL_DATA_PTR;
  14
  15 #ifdef CONFIG_CMD_NAND
  16 static int splash_load_from_nand(u32 bmp_load_addr, int nand_offset)
  17 {
  18         struct bmp_header *bmp_hdr;
  19         int res;
  20         size_t bmp_size, bmp_header_size = sizeof(struct bmp_header);
  21
  22         if (bmp_load_addr + bmp_header_size >= gd->start_addr_sp)
  23                 goto splash_address_too_high;
  24
  25         res = nand_read_skip_bad(&nand_info[nand_curr_device],
  26                         nand_offset, &bmp_header_size,
  27                         NULL, nand_info[nand_curr_device].size,
  28                         (u_char *)bmp_load_addr);
  29         if (res < 0)
  30                 return res;
  31
  32         bmp_hdr = (struct bmp_header *)bmp_load_addr;
  33         bmp_size = le32_to_cpu(bmp_hdr->file_size);
  34
  35         if (bmp_load_addr + bmp_size >= gd->start_addr_sp)
  36                 goto splash_address_too_high;
  37
  38         return nand_read_skip_bad(&nand_info[nand_curr_device],
  39                         nand_offset, &bmp_size,
  40                         NULL, nand_info[nand_curr_device].size,
  41                         (u_char *)bmp_load_addr);
  42
  43 splash_address_too_high:
  44         printf("Error: splashimage address too high. Data overwrites U-Boot "
  45                 "and/or placed beyond DRAM boundaries.\n");
  46
  47         return -1;
  48 }
  49 #else
  50 static inline int splash_load_from_nand(u32 bmp_load_addr, int nand_offset)
  51 {
  52         return -1;
  53 }
  54 #endif /* CONFIG_CMD_NAND */
  55
  56 int cl_splash_screen_prepare(int nand_offset)
  57 {
  58         char *env_splashimage_value;
  59         u32 bmp_load_addr;
  60
  61         env_splashimage_value = getenv("splashimage");
  62         if (env_splashimage_value == NULL)
  63                 return -1;
  64
  65         bmp_load_addr = simple_strtoul(env_splashimage_value, 0, 16);
  66         if (bmp_load_addr == 0) {
  67                 printf("Error: bad splashimage address specified\n");
  68                 return -1;
  69         }
  70
  71         return splash_load_from_nand(bmp_load_addr, nand_offset);
  72 }