board/karo/common/splashimage.c

   1 /*
   2  * (C) Copyright 2012 Lothar Waßmann <LW@KARO-electronics.de>
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  */
  17
  18 #include <common.h>
  19 #include <errno.h>
  20 #include <lcd.h>
  21 #include <nand.h>
  22 #include <jffs2/load_kernel.h>
  23
  24 DECLARE_GLOBAL_DATA_PTR;
  25
  26 static int karo_load_part(const char *part, void *addr, size_t len)
  27 {
  28         int ret;
  29         struct mtd_device *dev;
  30         struct part_info *part_info;
  31         u8 part_num;
  32
  33         debug("Initializing mtd_parts\n");
  34         ret = mtdparts_init();
  35         if (ret)
  36                 return ret;
  37
  38         debug("Trying to find NAND partition '%s'\n", part);
  39         ret = find_dev_and_part(part, &dev, &part_num,
  40                                 &part_info);
  41         if (ret) {
  42                 printf("Failed to find flash partition '%s': %d\n",
  43                         part, ret);
  44
  45                 return ret;
  46         }
  47         debug("Found partition '%s': offset=%08x size=%08x\n",
  48                 part, part_info->offset, part_info->size);
  49         if (part_info->size < len) {
  50                 printf("Warning: partition '%s' smaller than requested size: %u; truncating data to %u byte\n",
  51                         part, len, part_info->size);
  52                 len = part_info->size;
  53         }
  54         debug("Reading NAND partition '%s' to %p\n", part, addr);
  55         ret = nand_read_skip_bad(&nand_info[0], part_info->offset, &len, addr);
  56         if (ret) {
  57                 printf("Failed to load partition '%s' to %p\n", part, addr);
  58                 return ret;
  59         }
  60         debug("Read %u byte from partition '%s' @ offset %08x\n",
  61                 len, part, part_info->offset);
  62         return 0;
  63 }
  64
  65 static ulong calc_fbsize(void)
  66 {
  67         return panel_info.vl_row * panel_info.vl_col *
  68                 NBITS(panel_info.vl_bpix) / 8;
  69 }
  70
  71 int karo_load_splashimage(int mode)
  72 {
  73         int ret;
  74         int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]);
  75         unsigned long la = gd->fb_base;
  76         char *splashimage = getenv("splashimage");
  77         ulong fbsize = calc_fbsize();
  78         char *end;
  79
  80         if (!la || !splashimage)
  81                 return 0;
  82
  83         if ((simple_strtoul(splashimage, &end, 16) != 0) &&
  84                 *end == '\0') {
  85                 if (mode)
  86                         return 0;
  87                 la = simple_strtoul(splashimage, NULL, 16);
  88                 splashimage = "logo.bmp";
  89         } else if (!mode) {
  90                 return 0;
  91         }
  92
  93         if (tstc())
  94                 return -ENODEV;
  95
  96         ret = karo_load_part(splashimage, (void *)la, fbsize);
  97         if (ret) {
  98                 printf("Failed to load logo from '%s': %d\n", splashimage, ret);
  99                 return ret;
 100         }
 101         return 0;
 102 }
 103
 104 static int erase_flash(loff_t offs, size_t len)
 105 {
 106         nand_erase_options_t nand_erase_options;
 107
 108         memset(&nand_erase_options, 0, sizeof(nand_erase_options));
 109         nand_erase_options.length = len;
 110         nand_erase_options.offset = offs;
 111
 112         return nand_erase_opts(&nand_info[0], &nand_erase_options);
 113 }
 114
 115 int do_fbdump(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 116 {
 117         int ret;
 118         size_t fbsize = calc_fbsize();
 119         const char *part = "logo";
 120         struct mtd_device *dev;
 121         struct part_info *part_info;
 122         u8 part_num;
 123         u_char *addr = (u_char *)gd->fb_base;
 124
 125         if (argc > 2)
 126                 return CMD_RET_USAGE;
 127
 128         if (argc == 2)
 129                 part = argv[1];
 130
 131         if (!addr) {
 132                 printf("fb address unknown\n");
 133                 return CMD_RET_FAILURE;
 134         }
 135
 136         debug("Initializing mtd_parts\n");
 137         ret = mtdparts_init();
 138         if (ret)
 139                 return ret;
 140
 141         debug("Trying to find NAND partition '%s'\n", part);
 142         ret = find_dev_and_part(part, &dev, &part_num,
 143                                 &part_info);
 144         if (ret) {
 145                 printf("Failed to find flash partition '%s': %d\n",
 146                         part, ret);
 147
 148                 return ret;
 149         }
 150         debug("Found partition '%s': offset=%08x size=%08x\n",
 151                 part, part_info->offset, part_info->size);
 152         if (part_info->size < fbsize) {
 153                 printf("Error: partition '%s' smaller than frame buffer size: %u\n",
 154                         part, fbsize);
 155                 return CMD_RET_FAILURE;
 156         }
 157         debug("Writing framebuffer %p to NAND partition '%s'\n",
 158                 addr, part);
 159
 160         ret = erase_flash(part_info->offset, fbsize);
 161         if (ret) {
 162                 printf("Failed to erase partition '%s'\n", part);
 163                 return CMD_RET_FAILURE;
 164         }
 165
 166         ret = nand_write_skip_bad(&nand_info[0], part_info->offset,
 167                                 &fbsize, addr, WITH_DROP_FFS);
 168         if (ret) {
 169                 printf("Failed to write partition '%s'\n", part);
 170                 return ret;
 171         }
 172         debug("Wrote %u byte from %p to partition '%s' @ offset %08x\n",
 173                 fbsize, addr, part, part_info->offset);
 174
 175         return CMD_RET_SUCCESS;
 176 }
 177
 178 U_BOOT_CMD(fbdump, 2, 0, do_fbdump, "dump framebuffer contents to flash",
 179         "[partition name]\n"
 180         "       default partition name: 'logo'\n");