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 /* Header size is CH header rounded up to 512 bytes plus GP header */
  24 #define OMAP_CH_HDR_SIZE 512
  25 #define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE + GPIMAGE_HDR_SIZE)
  26
  27 static int do_swap32 = 0;
  28
  29 static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];
  30
  31 static int omapimage_check_image_types(uint8_t type)
  32 {
  33         if (type == IH_TYPE_OMAPIMAGE)
  34                 return EXIT_SUCCESS;
  35         return EXIT_FAILURE;
  36 }
  37
  38 static int omapimage_verify_header(unsigned char *ptr, int image_size,
  39                         struct image_tool_params *params)
  40 {
  41         struct ch_toc *toc = (struct ch_toc *)ptr;
  42         struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
  43         uint32_t offset, size;
  44
  45         while (toc->section_offset != 0xffffffff
  46                         && toc->section_size != 0xffffffff) {
  47                 if (do_swap32) {
  48                         offset = cpu_to_be32(toc->section_offset);
  49                         size = cpu_to_be32(toc->section_size);
  50                 } else {
  51                         offset = toc->section_offset;
  52                         size = toc->section_size;
  53                 }
  54                 if (!offset || !size)
  55                         return -1;
  56                 if (offset >= OMAP_CH_HDR_SIZE ||
  57                     offset+size >= OMAP_CH_HDR_SIZE)
  58                         return -1;
  59                 toc++;
  60         }
  61
  62         return gph_verify_header(gph, do_swap32);
  63 }
  64
  65 static void omapimage_print_section(struct ch_settings *chs)
  66 {
  67         const char *section_name;
  68
  69         if (chs->section_key)
  70                 section_name = "CHSETTINGS";
  71         else
  72                 section_name = "UNKNOWNKEY";
  73
  74         printf("%s (%x) "
  75                 "valid:%x "
  76                 "version:%x "
  77                 "reserved:%x "
  78                 "flags:%x\n",
  79                 section_name,
  80                 chs->section_key,
  81                 chs->valid,
  82                 chs->version,
  83                 chs->reserved,
  84                 chs->flags);
  85 }
  86
  87 static void omapimage_print_header(const void *ptr)
  88 {
  89         const struct ch_toc *toc = (struct ch_toc *)ptr;
  90         const struct gp_header *gph =
  91                         (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
  92         uint32_t offset, size;
  93
  94         while (toc->section_offset != 0xffffffff
  95                         && toc->section_size != 0xffffffff) {
  96                 if (do_swap32) {
  97                         offset = cpu_to_be32(toc->section_offset);
  98                         size = cpu_to_be32(toc->section_size);
  99                 } else {
 100                         offset = toc->section_offset;
 101                         size = toc->section_size;
 102                 }
 103
 104                 if (offset >= OMAP_CH_HDR_SIZE ||
 105                     offset+size >= OMAP_CH_HDR_SIZE)
 106                         exit(EXIT_FAILURE);
 107
 108                 printf("Section %s offset %x length %x\n",
 109                         toc->section_name,
 110                         toc->section_offset,
 111                         toc->section_size);
 112
 113                 omapimage_print_section((struct ch_settings *)(ptr+offset));
 114                 toc++;
 115         }
 116
 117         gph_print_header(gph, do_swap32);
 118 }
 119
 120 static int toc_offset(void *hdr, void *member)
 121 {
 122         return member - hdr;
 123 }
 124
 125 static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
 126                                 struct image_tool_params *params)
 127 {
 128         struct ch_toc *toc = (struct ch_toc *)ptr;
 129         struct ch_settings *chs = (struct ch_settings *)
 130                                         (ptr + 2 * sizeof(*toc));
 131         struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
 132
 133         toc->section_offset = toc_offset(ptr, chs);
 134         toc->section_size = sizeof(struct ch_settings);
 135         strcpy((char *)toc->section_name, "CHSETTINGS");
 136
 137         chs->section_key = KEY_CHSETTINGS;
 138         chs->valid = 0;
 139         chs->version = 1;
 140         chs->reserved = 0;
 141         chs->flags = 0;
 142
 143         toc++;
 144         memset(toc, 0xff, sizeof(*toc));
 145
 146         gph_set_header(gph, sbuf->st_size - OMAP_FILE_HDR_SIZE,
 147                        params->addr, 0);
 148
 149         if (strncmp(params->imagename, "byteswap", 8) == 0) {
 150                 do_swap32 = 1;
 151                 int swapped = 0;
 152                 uint32_t *data = (uint32_t *)ptr;
 153
 154                 while (swapped <= (sbuf->st_size / sizeof(uint32_t))) {
 155                         *data = cpu_to_be32(*data);
 156                         swapped++;
 157                         data++;
 158                 }
 159         }
 160 }
 161
 162 /*
 163  * omapimage parameters
 164  */
 165 static struct image_type_params omapimage_params = {
 166         .name           = "TI OMAP CH/GP Boot Image support",
 167         .header_size    = OMAP_FILE_HDR_SIZE,
 168         .hdr            = (void *)&omapimage_header,
 169         .check_image_type = omapimage_check_image_types,
 170         .verify_header  = omapimage_verify_header,
 171         .print_header   = omapimage_print_header,
 172         .set_header     = omapimage_set_header,
 173         .check_params   = gpimage_check_params,
 174 };
 175
 176 void init_omap_image_type(void)
 177 {
 178         register_image_type(&omapimage_params);
 179 }