tools/omapimage.c

   1 /*
   2  * (C) Copyright 2010
   3  * Linaro LTD, www.linaro.org
   4  * Author: John Rigby <john.rigby@linaro.org>
   5  * Based on TI's signGP.c
   6  *
   7  * (C) Copyright 2009
   8  * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
   9  *
  10  * (C) Copyright 2008
  11  * Marvell Semiconductor <www.marvell.com>
  12  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
  13  *
  14  * SPDX-License-Identifier:     GPL-2.0+
  15  */
  16
  17 #include "imagetool.h"
  18 #include <compiler.h>
  19 #include <image.h>
  20 #include "gpheader.h"
  21 #include "omapimage.h"
  22
  23 #define DIV_ROUND_UP(n, d)     (((n) + (d) - 1) / (d))
  24
  25 /* Header size is CH header rounded up to 512 bytes plus GP header */
  26 #define OMAP_CH_HDR_SIZE 512
  27 #define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE + GPIMAGE_HDR_SIZE)
  28
  29 static int do_swap32 = 0;
  30
  31 static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];
  32
  33 static int omapimage_check_image_types(uint8_t type)
  34 {
  35         if (type == IH_TYPE_OMAPIMAGE)
  36                 return EXIT_SUCCESS;
  37         return EXIT_FAILURE;
  38 }
  39
  40 static int omapimage_verify_header(unsigned char *ptr, int image_size,
  41                         struct image_tool_params *params)
  42 {
  43         struct ch_toc *toc = (struct ch_toc *)ptr;
  44         struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
  45         uint32_t offset, size;
  46
  47         while (toc->section_offset != 0xffffffff
  48                         && toc->section_size != 0xffffffff) {
  49                 if (do_swap32) {
  50                         offset = cpu_to_be32(toc->section_offset);
  51                         size = cpu_to_be32(toc->section_size);
  52                 } else {
  53                         offset = toc->section_offset;
  54                         size = toc->section_size;
  55                 }
  56                 if (!offset || !size)
  57                         return -1;
  58                 if (offset >= OMAP_CH_HDR_SIZE ||
  59                     offset+size >= OMAP_CH_HDR_SIZE)
  60                         return -1;
  61                 toc++;
  62         }
  63
  64         return gph_verify_header(gph, do_swap32);
  65 }
  66
  67 static void omapimage_print_section(struct ch_settings *chs)
  68 {
  69         const char *section_name;
  70
  71         if (chs->section_key)
  72                 section_name = "CHSETTINGS";
  73         else
  74                 section_name = "UNKNOWNKEY";
  75
  76         printf("%s (%x) "
  77                 "valid:%x "
  78                 "version:%x "
  79                 "reserved:%x "
  80                 "flags:%x\n",
  81                 section_name,
  82                 chs->section_key,
  83                 chs->valid,
  84                 chs->version,
  85                 chs->reserved,
  86                 chs->flags);
  87 }
  88
  89 static void omapimage_print_header(const void *ptr)
  90 {
  91         const struct ch_toc *toc = (struct ch_toc *)ptr;
  92         const struct gp_header *gph =
  93                         (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
  94         uint32_t offset, size;
  95
  96         while (toc->section_offset != 0xffffffff
  97                         && toc->section_size != 0xffffffff) {
  98                 if (do_swap32) {
  99                         offset = cpu_to_be32(toc->section_offset);
 100                         size = cpu_to_be32(toc->section_size);
 101                 } else {
 102                         offset = toc->section_offset;
 103                         size = toc->section_size;
 104                 }
 105
 106                 if (offset >= OMAP_CH_HDR_SIZE ||
 107                     offset+size >= OMAP_CH_HDR_SIZE)
 108                         exit(EXIT_FAILURE);
 109
 110                 printf("Section %s offset %x length %x\n",
 111                         toc->section_name,
 112                         toc->section_offset,
 113                         toc->section_size);
 114
 115                 omapimage_print_section((struct ch_settings *)(ptr+offset));
 116                 toc++;
 117         }
 118
 119         gph_print_header(gph, do_swap32);
 120 }
 121
 122 static int toc_offset(void *hdr, void *member)
 123 {
 124         return member - hdr;
 125 }
 126
 127 static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
 128                                 struct image_tool_params *params)
 129 {
 130         struct ch_toc *toc = (struct ch_toc *)ptr;
 131         struct ch_settings *chs = (struct ch_settings *)
 132                                         (ptr + 2 * sizeof(*toc));
 133         struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
 134
 135         toc->section_offset = toc_offset(ptr, chs);
 136         toc->section_size = sizeof(struct ch_settings);
 137         strcpy((char *)toc->section_name, "CHSETTINGS");
 138
 139         chs->section_key = KEY_CHSETTINGS;
 140         chs->valid = 0;
 141         chs->version = 1;
 142         chs->reserved = 0;
 143         chs->flags = 0;
 144
 145         toc++;
 146         memset(toc, 0xff, sizeof(*toc));
 147
 148         gph_set_header(gph, sbuf->st_size - OMAP_CH_HDR_SIZE,
 149                        params->addr, 0);
 150
 151         if (strncmp(params->imagename, "byteswap", 8) == 0) {
 152                 do_swap32 = 1;
 153                 int swapped = 0;
 154                 uint32_t *data = (uint32_t *)ptr;
 155                 const off_t size_in_words =
 156                         DIV_ROUND_UP(sbuf->st_size, sizeof(uint32_t));
 157
 158                 while (swapped < size_in_words) {
 159                         *data = cpu_to_be32(*data);
 160                         swapped++;
 161                         data++;
 162                 }
 163         }
 164 }
 165
 166 /*
 167  * omapimage parameters
 168  */
 169 U_BOOT_IMAGE_TYPE(
 170         omapimage,
 171         "TI OMAP CH/GP Boot Image support",
 172         OMAP_FILE_HDR_SIZE,
 173         (void *)&omapimage_header,
 174         gpimage_check_params,
 175         omapimage_verify_header,
 176         omapimage_print_header,
 177         omapimage_set_header,
 178         NULL,
 179         omapimage_check_image_types,
 180         NULL,
 181         NULL
 182 );