LXR uboot/tools/fit

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2014
   4 * DENX Software Engineering
   5 * Heiko Schocher <hs@denx.de>
   6 *
   7 * (C) Copyright 2008 Semihalf
   8 *
   9 * (C) Copyright 2000-2004
  10 * DENX Software Engineering
  11 * Wolfgang Denk, wd@denx.de
  12 *
  13 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
  14 *              FIT image specific code abstracted from mkimage.c
  15 *              some functions added to address abstraction
  16 *
  17 * All rights reserved.
  18 */
  19
  20#include "imagetool.h"
  21#include "mkimage.h"
  22#include "fit_common.h"
  23#include <image.h>
  24#include <u-boot/crc.h>
  25
  26int fit_verify_header(unsigned char *ptr, int image_size,
  27                        struct image_tool_params *params)
  28{
  29        int ret;
  30
  31        if (fdt_check_header(ptr) != EXIT_SUCCESS)
  32                return EXIT_FAILURE;
  33
  34        ret = fit_check_format(ptr, IMAGE_SIZE_INVAL);
  35        if (ret) {
  36                if (ret != -EADDRNOTAVAIL)
  37                        return EXIT_FAILURE;
  38                fprintf(stderr, "Image contains unit addresses @, this will break signing\n");
  39        }
  40
  41        return EXIT_SUCCESS;
  42}
  43
  44int fit_check_image_types(uint8_t type)
  45{
  46        if (type == IH_TYPE_FLATDT)
  47                return EXIT_SUCCESS;
  48        else
  49                return EXIT_FAILURE;
  50}
  51
  52int mmap_fdt(const char *cmdname, const char *fname, size_t size_inc,
  53             void **blobp, struct stat *sbuf, bool delete_on_error,
  54             bool read_only)
  55{
  56        void *ptr;
  57        int fd;
  58
  59        /* Load FIT blob into memory (we need to write hashes/signatures) */
  60        fd = open(fname, (read_only ? O_RDONLY : O_RDWR) | O_BINARY);
  61
  62        if (fd < 0) {
  63                fprintf(stderr, "%s: Can't open %s: %s\n",
  64                        cmdname, fname, strerror(errno));
  65                goto err;
  66        }
  67
  68        if (fstat(fd, sbuf) < 0) {
  69                fprintf(stderr, "%s: Can't stat %s: %s\n",
  70                        cmdname, fname, strerror(errno));
  71                goto err;
  72        }
  73
  74        if (size_inc) {
  75                sbuf->st_size += size_inc;
  76                if (ftruncate(fd, sbuf->st_size)) {
  77                        fprintf(stderr, "%s: Can't expand %s: %s\n",
  78                                cmdname, fname, strerror(errno));
  79                goto err;
  80                }
  81        }
  82
  83        errno = 0;
  84        ptr = mmap(0, sbuf->st_size,
  85                   (read_only ? PROT_READ : PROT_READ | PROT_WRITE), MAP_SHARED,
  86                   fd, 0);
  87        if ((ptr == MAP_FAILED) || (errno != 0)) {
  88                fprintf(stderr, "%s: Can't read %s: %s\n",
  89                        cmdname, fname, strerror(errno));
  90                goto err;
  91        }
  92
  93        /* check if ptr has a valid blob */
  94        if (fdt_check_header(ptr)) {
  95                fprintf(stderr, "%s: Invalid FIT blob\n", cmdname);
  96                goto err;
  97        }
  98
  99        /* expand if needed */
 100        if (size_inc) {
 101                int ret;
 102
 103                ret = fdt_open_into(ptr, ptr, sbuf->st_size);
 104                if (ret) {
 105                        fprintf(stderr, "%s: Cannot expand FDT: %s\n",
 106                                cmdname, fdt_strerror(ret));
 107                        goto err;
 108                }
 109        }
 110
 111        *blobp = ptr;
 112        return fd;
 113
 114err:
 115        if (fd >= 0)
 116                close(fd);
 117        if (delete_on_error)
 118                unlink(fname);
 119
 120        return -1;
 121}
 122
 123int copyfile(const char *src, const char *dst)
 124{
 125        int fd_src = -1, fd_dst = -1;
 126        void *buf = NULL;
 127        ssize_t size;
 128        size_t count;
 129        int ret = -1;
 130
 131        fd_src = open(src, O_RDONLY);
 132        if (fd_src < 0) {
 133                printf("Can't open file %s (%s)\n", src, strerror(errno));
 134                goto out;
 135        }
 136
 137        fd_dst = open(dst, O_WRONLY | O_CREAT | O_TRUNC, 0666);
 138        if (fd_dst < 0) {
 139                printf("Can't open file %s (%s)\n", dst, strerror(errno));
 140                goto out;
 141        }
 142
 143        buf = calloc(1, 512);
 144        if (!buf) {
 145                printf("Can't allocate buffer to copy file\n");
 146                goto out;
 147        }
 148
 149        while (1) {
 150                size = read(fd_src, buf, 512);
 151                if (size < 0) {
 152                        printf("Can't read file %s\n", src);
 153                        goto out;
 154                }
 155                if (!size)
 156                        break;
 157
 158                count = size;
 159                size = write(fd_dst, buf, count);
 160                if (size < 0) {
 161                        printf("Can't write file %s\n", dst);
 162                        goto out;
 163                }
 164        }
 165
 166        ret = 0;
 167
 168 out:
 169        if (fd_src >= 0)
 170                close(fd_src);
 171        if (fd_dst >= 0)
 172                close(fd_dst);
 173        if (buf)
 174                free(buf);
 175
 176        return ret;
 177}
 178
 179void summary_show(struct image_summary *summary, const char *imagefile,
 180                  const char *keydest)
 181{
 182        if (summary->sig_offset) {
 183                printf("Signature written to '%s', node '%s'\n", imagefile,
 184                       summary->sig_path);
 185                if (keydest) {
 186                        printf("Public key written to '%s', node '%s'\n",
 187                               keydest, summary->keydest_path);
 188                }
 189        }
 190}
 191