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/* Copyright 2022 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include "futility.h"
#include "updater.h"
#ifdef USE_FLASHROM
/* Command line options */
static struct option const long_opts[] = {
SHARED_FLASH_ARGS_LONGOPTS
/* name has_arg *flag val */
{"help", 0, NULL, 'h'},
{"debug", 0, NULL, 'd'},
{"region", 1, NULL, 'r'},
{"verbose", 0, NULL, 'v'},
{NULL, 0, NULL, 0},
};
static const char *const short_opts = "hdv" SHARED_FLASH_ARGS_SHORTOPTS;
static void print_help(int argc, char *argv[])
{
printf("\n"
"Usage: " MYNAME " %s [OPTIONS] FILE\n"
"\n"
"Reads AP firmware to the FILE\n"
"-d, --debug \tPrint debugging messages\n"
"-r, --region \tThe region to read (optional)\n"
"-v, --verbose \tPrint verbose messages\n"
SHARED_FLASH_ARGS_HELP,
argv[0]);
}
static int do_read(int argc, char *argv[])
{
struct updater_config *cfg;
struct updater_config_arguments args = {0};
int i, errorcnt = 0, update_needed = 1;
const char *prepare_ctrl_name = NULL;
char *servo_programmer = NULL;
char *output_file_name = NULL;
char *region = NULL;
cfg = updater_new_config();
assert(cfg);
opterr = 0;
while ((i = getopt_long(argc, argv, short_opts, long_opts, 0)) != -1) {
if (handle_flash_argument(&args, i, optarg))
continue;
switch (i) {
case 'h':
print_help(argc, argv);
updater_delete_config(cfg);
return !!errorcnt;
case 'd':
debugging_enabled = 1;
args.verbosity++;
break;
case 'r':
region = optarg;
break;
case 'v':
args.verbosity++;
break;
case '?':
errorcnt++;
if (optopt)
ERROR("Unrecognized option: -%c\n", optopt);
else if (argv[optind - 1])
ERROR("Unrecognized option (possibly '%s')\n",
argv[optind - 1]);
else
ERROR("Unrecognized option.\n");
break;
default:
errorcnt++;
ERROR("Failed parsing options.\n");
}
}
if (argc - optind < 1) {
fprintf(stderr, "\nERROR: missing output filename\n");
print_help(argc, argv);
return 1;
}
output_file_name = argv[optind++];
if (optind < argc) {
errorcnt++;
ERROR("Unexpected arguments.\n");
}
if (!errorcnt && args.detect_servo) {
servo_programmer = host_detect_servo(&prepare_ctrl_name);
if (!servo_programmer)
errorcnt++;
else if (!args.programmer)
args.programmer = servo_programmer;
}
if (!errorcnt)
errorcnt += updater_setup_config(cfg, &args, &update_needed);
if (!errorcnt && update_needed) {
prepare_servo_control(prepare_ctrl_name, 1);
int r = load_system_firmware(cfg, &cfg->image_current);
/*
* Ignore a parse error as we still want to write the file
* out in that case
*/
if (r && r != IMAGE_PARSE_FAILURE)
errorcnt++;
prepare_servo_control(prepare_ctrl_name, 0);
}
if (errorcnt)
goto err;
if (region) {
struct firmware_section section;
if (find_firmware_section(§ion, &cfg->image_current,
region)) {
ERROR("Region '%s' not found in image.\n", region);
goto err;
}
if (write_to_file("Wrote AP firmware region to",
output_file_name, section.data, section.size))
errorcnt++;
} else {
if (write_to_file("Wrote AP firmware to", output_file_name,
cfg->image_current.data,
cfg->image_current.size))
errorcnt++;
}
err:
free(servo_programmer);
updater_delete_config(cfg);
return !!errorcnt;
}
#define CMD_HELP_STR "Read AP firmware"
#else /* USE_FLASHROM */
static int do_read(int argc, char *argv[])
{
FATAL(MYNAME " was built without flashrom support, `read` command unavailable!\n");
return -1;
}
#define CMD_HELP_STR "Read system firmware (unavailable in this build)"
#endif /* !USE_FLASHROM */
DECLARE_FUTIL_COMMAND(read, do_read, VBOOT_VERSION_ALL, CMD_HELP_STR);
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