tools/omapimage.c

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