120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
/*
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* fmaptool, CLI utility for converting plaintext fmd files into fmap blobs
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*
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* Copyright (C) 2015 Google, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include "common.h"
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#include "fmap_from_fmd.h"
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#include <stdio.h>
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#include <string.h>
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#define STDIN_FILENAME_SENTINEL "-"
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enum fmaptool_return {
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FMAPTOOL_EXIT_SUCCESS = 0,
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FMAPTOOL_EXIT_BAD_ARGS,
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FMAPTOOL_EXIT_BAD_INPUT_PATH,
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FMAPTOOL_EXIT_BAD_OUTPUT_PATH,
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FMAPTOOL_EXIT_FAILED_DESCRIPTOR,
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FMAPTOOL_EXIT_FAILED_FMAP_CONVERSION,
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FMAPTOOL_EXIT_UNKNOWN_FMAP_SIZE,
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FMAPTOOL_EXIT_FAILED_WRITING_FILE,
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};
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bool fmd_process_annotation_impl(unused const struct flashmap_descriptor *node,
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unused const char *annotation)
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{
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// We always accept annotations, but never act on them.
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return true;
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}
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int main(int argc, char **argv)
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{
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if (argc != 3) {
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fputs("Convert a human-readable flashmap descriptor (fmd) file into the binary FMAP format for use in firmware images\n",
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stderr);
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fprintf(stderr,
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"USAGE: %s <fmd input file> <binary output file>\n",
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argv[0]);
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fprintf(stderr,
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"To read from standard input, provide '%s' as the input filename.\n",
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STDIN_FILENAME_SENTINEL);
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return FMAPTOOL_EXIT_BAD_ARGS;
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}
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const char *fmd_filename = argv[1];
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const char *fmap_filename = argv[2];
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FILE *fmd_file = stdin;
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if (strcmp(fmd_filename, STDIN_FILENAME_SENTINEL) != 0) {
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fmd_file = fopen(fmd_filename, "r");
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if (!fmd_file) {
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fprintf(stderr, "FATAL: Unable to open file '%s'\n",
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fmd_filename);
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return FMAPTOOL_EXIT_BAD_INPUT_PATH;
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}
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}
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struct flashmap_descriptor *descriptor = fmd_create(fmd_file);
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fclose(fmd_file);
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if (!descriptor) {
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fputs("FATAL: Failed while processing provided descriptor\n",
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stderr);
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return FMAPTOOL_EXIT_FAILED_DESCRIPTOR;
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}
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struct fmap *flashmap = fmap_from_fmd(descriptor);
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if (!flashmap) {
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fputs("FATAL: Failed while constructing FMAP section\n",
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stderr);
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fmd_cleanup(descriptor);
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return FMAPTOOL_EXIT_FAILED_FMAP_CONVERSION;
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}
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int size = fmap_size(flashmap);
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if (size < 0) {
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fputs("FATAL: Failed to determine FMAP section size\n",
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stderr);
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fmap_destroy(flashmap);
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fmd_cleanup(descriptor);
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return FMAPTOOL_EXIT_UNKNOWN_FMAP_SIZE;
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}
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FILE *fmap_file = fopen(fmap_filename, "wb");
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if (!fmap_file) {
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fprintf(stderr, "FATAL: Unable to open file '%s' for writing\n",
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fmap_filename);
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fmap_destroy(flashmap);
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fmd_cleanup(descriptor);
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return FMAPTOOL_EXIT_BAD_OUTPUT_PATH;
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}
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if (!fwrite(flashmap, size, 1, fmap_file)) {
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fputs("FATAL: Failed to write final FMAP to file\n", stderr);
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fclose(fmap_file);
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fmap_destroy(flashmap);
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fmd_cleanup(descriptor);
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return FMAPTOOL_EXIT_FAILED_WRITING_FILE;
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}
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fclose(fmap_file);
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printf("SUCCESS: Wrote %d bytes to file '%s'\n", size, fmap_filename);
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fmap_destroy(flashmap);
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fmd_cleanup(descriptor);
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return FMAPTOOL_EXIT_SUCCESS;
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}
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