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 "mkimage.h"
  18 #include <image.h>
  19 #include "omapimage.h"
  20
  21 /* Header size is CH header rounded up to 512 bytes plus GP header */
  22 #define OMAP_CH_HDR_SIZE 512
  23 #define OMAP_GP_HDR_SIZE (sizeof(struct gp_header))
  24 #define OMAP_FILE_HDR_SIZE (OMAP_CH_HDR_SIZE+OMAP_GP_HDR_SIZE)
  25
  26 static int do_swap32 = 0;
  27
  28 static uint32_t omapimage_swap32(uint32_t data)
  29 {
  30         uint32_t result = 0;
  31         result  = (data & 0xFF000000) >> 24;
  32         result |= (data & 0x00FF0000) >> 8;
  33         result |= (data & 0x0000FF00) << 8;
  34         result |= (data & 0x000000FF) << 24;
  35         return result;
  36 }
  37
  38 static uint8_t omapimage_header[OMAP_FILE_HDR_SIZE];
  39
  40 static int omapimage_check_image_types(uint8_t type)
  41 {
  42         if (type == IH_TYPE_OMAPIMAGE)
  43                 return EXIT_SUCCESS;
  44         else {
  45                 return EXIT_FAILURE;
  46         }
  47 }
  48
  49 /*
  50  * Only the simplest image type is currently supported:
  51  * TOC pointing to CHSETTINGS
  52  * TOC terminator
  53  * CHSETTINGS
  54  *
  55  * padding to OMAP_CH_HDR_SIZE bytes
  56  *
  57  * gp header
  58  *   size
  59  *   load_addr
  60  */
  61 static int valid_gph_size(uint32_t size)
  62 {
  63         return size;
  64 }
  65
  66 static int valid_gph_load_addr(uint32_t load_addr)
  67 {
  68         return load_addr;
  69 }
  70
  71 static int omapimage_verify_header(unsigned char *ptr, int image_size,
  72                         struct mkimage_params *params)
  73 {
  74         struct ch_toc *toc = (struct ch_toc *)ptr;
  75         struct gp_header *gph = (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
  76         uint32_t offset, size, gph_size, gph_load_addr;
  77
  78         while (toc->section_offset != 0xffffffff
  79                         && toc->section_size != 0xffffffff) {
  80                 if (do_swap32) {
  81                         offset = omapimage_swap32(toc->section_offset);
  82                         size = omapimage_swap32(toc->section_size);
  83                 } else {
  84                         offset = toc->section_offset;
  85                         size = toc->section_size;
  86                 }
  87                 if (!offset || !size)
  88                         return -1;
  89                 if (offset >= OMAP_CH_HDR_SIZE ||
  90                     offset+size >= OMAP_CH_HDR_SIZE)
  91                         return -1;
  92                 toc++;
  93         }
  94
  95         if (do_swap32) {
  96                 gph_size = omapimage_swap32(gph->size);
  97                 gph_load_addr = omapimage_swap32(gph->load_addr);
  98         } else {
  99                 gph_size = gph->size;
 100                 gph_load_addr = gph->load_addr;
 101         }
 102
 103         if (!valid_gph_size(gph_size))
 104                 return -1;
 105         if (!valid_gph_load_addr(gph_load_addr))
 106                 return -1;
 107
 108         return 0;
 109 }
 110
 111 static void omapimage_print_section(struct ch_settings *chs)
 112 {
 113         const char *section_name;
 114
 115         if (chs->section_key)
 116                 section_name = "CHSETTINGS";
 117         else
 118                 section_name = "UNKNOWNKEY";
 119
 120         printf("%s (%x) "
 121                 "valid:%x "
 122                 "version:%x "
 123                 "reserved:%x "
 124                 "flags:%x\n",
 125                 section_name,
 126                 chs->section_key,
 127                 chs->valid,
 128                 chs->version,
 129                 chs->reserved,
 130                 chs->flags);
 131 }
 132
 133 static void omapimage_print_header(const void *ptr)
 134 {
 135         const struct ch_toc *toc = (struct ch_toc *)ptr;
 136         const struct gp_header *gph =
 137                         (struct gp_header *)(ptr+OMAP_CH_HDR_SIZE);
 138         uint32_t offset, size, gph_size, gph_load_addr;
 139
 140         while (toc->section_offset != 0xffffffff
 141                         && toc->section_size != 0xffffffff) {
 142                 if (do_swap32) {
 143                         offset = omapimage_swap32(toc->section_offset);
 144                         size = omapimage_swap32(toc->section_size);
 145                 } else {
 146                         offset = toc->section_offset;
 147                         size = toc->section_size;
 148                 }
 149
 150                 if (offset >= OMAP_CH_HDR_SIZE ||
 151                     offset+size >= OMAP_CH_HDR_SIZE)
 152                         exit(EXIT_FAILURE);
 153
 154                 printf("Section %s offset %x length %x\n",
 155                         toc->section_name,
 156                         toc->section_offset,
 157                         toc->section_size);
 158
 159                 omapimage_print_section((struct ch_settings *)(ptr+offset));
 160                 toc++;
 161         }
 162
 163         if (do_swap32) {
 164                 gph_size = omapimage_swap32(gph->size);
 165                 gph_load_addr = omapimage_swap32(gph->load_addr);
 166         } else {
 167                 gph_size = gph->size;
 168                 gph_load_addr = gph->load_addr;
 169         }
 170
 171         if (!valid_gph_size(gph_size)) {
 172                 fprintf(stderr, "Error: invalid image size %x\n", gph_size);
 173                 exit(EXIT_FAILURE);
 174         }
 175
 176         if (!valid_gph_load_addr(gph_load_addr)) {
 177                 fprintf(stderr, "Error: invalid image load address %x\n",
 178                                 gph_load_addr);
 179                 exit(EXIT_FAILURE);
 180         }
 181
 182         printf("GP Header: Size %x LoadAddr %x\n", gph_size, gph_load_addr);
 183 }
 184
 185 static int toc_offset(void *hdr, void *member)
 186 {
 187         return member - hdr;
 188 }
 189
 190 static void omapimage_set_header(void *ptr, struct stat *sbuf, int ifd,
 191                                 struct mkimage_params *params)
 192 {
 193         struct ch_toc *toc = (struct ch_toc *)ptr;
 194         struct ch_settings *chs = (struct ch_settings *)
 195                                         (ptr + 2 * sizeof(*toc));
 196         struct gp_header *gph = (struct gp_header *)(ptr + OMAP_CH_HDR_SIZE);
 197
 198         toc->section_offset = toc_offset(ptr, chs);
 199         toc->section_size = sizeof(struct ch_settings);
 200         strcpy((char *)toc->section_name, "CHSETTINGS");
 201
 202         chs->section_key = KEY_CHSETTINGS;
 203         chs->valid = 0;
 204         chs->version = 1;
 205         chs->reserved = 0;
 206         chs->flags = 0;
 207
 208         toc++;
 209         memset(toc, 0xff, sizeof(*toc));
 210
 211         gph->size = sbuf->st_size - OMAP_FILE_HDR_SIZE;
 212         gph->load_addr = params->addr;
 213
 214         if (strncmp(params->imagename, "byteswap", 8) == 0) {
 215                 do_swap32 = 1;
 216                 int swapped = 0;
 217                 uint32_t *data = (uint32_t *)ptr;
 218
 219                 while (swapped <= (sbuf->st_size / sizeof(uint32_t))) {
 220                         *data = omapimage_swap32(*data);
 221                         swapped++;
 222                         data++;
 223                 }
 224         }
 225 }
 226
 227 int omapimage_check_params(struct mkimage_params *params)
 228 {
 229         return  (params->dflag && (params->fflag || params->lflag)) ||
 230                 (params->fflag && (params->dflag || params->lflag)) ||
 231                 (params->lflag && (params->dflag || params->fflag));
 232 }
 233
 234 /*
 235  * omapimage parameters
 236  */
 237 static struct image_type_params omapimage_params = {
 238         .name           = "TI OMAP CH/GP Boot Image support",
 239         .header_size    = OMAP_FILE_HDR_SIZE,
 240         .hdr            = (void *)&omapimage_header,
 241         .check_image_type = omapimage_check_image_types,
 242         .verify_header  = omapimage_verify_header,
 243         .print_header   = omapimage_print_header,
 244         .set_header     = omapimage_set_header,
 245         .check_params   = omapimage_check_params,
 246 };
 247
 248 void init_omap_image_type(void)
 249 {
 250         mkimage_register(&omapimage_params);
 251 }