259 lines
5.1 KiB
C
259 lines
5.1 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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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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*/
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#include <environment.h>
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#include <globalvar.h>
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#include <magicvar.h>
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#include <command.h>
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#include <common.h>
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#include <getopt.h>
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#include <libgen.h>
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#include <malloc.h>
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#include <boot.h>
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#include <fs.h>
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#include <linux/stat.h>
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static int verbose;
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static int dryrun;
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static void bootsources_list(void)
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{
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DIR *dir;
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struct dirent *d;
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const char *path = "/env/boot";
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dir = opendir(path);
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if (!dir) {
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printf("cannot open %s: %s\n", path, strerror(-errno));
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return;
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}
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printf("Bootsources: ");
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while ((d = readdir(dir))) {
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if (*d->d_name == '.')
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continue;
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printf("%s ", d->d_name);
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}
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printf("\n");
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closedir(dir);
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}
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static const char *getenv_or_null(const char *var)
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{
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const char *val = getenv(var);
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if (val && *val)
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return val;
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return NULL;
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}
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/*
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* Start a single boot script. 'path' is a full path to a boot script.
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*/
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static int boot_script(char *path)
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{
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struct bootm_data data = {};
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int ret;
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printf("booting %s...\n", basename(path));
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globalvar_set_match("linux.bootargs.dyn.", "");
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globalvar_set_match("bootm.", "");
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ret = run_command(path, 0);
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if (ret) {
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printf("Running %s failed\n", path);
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goto out;
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}
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data.initrd_address = UIMAGE_INVALID_ADDRESS;
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data.os_address = UIMAGE_SOME_ADDRESS;
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data.oftree_file = getenv_or_null("global.bootm.oftree");
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data.os_file = getenv_or_null("global.bootm.image");
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getenv_ul("global.bootm.image.loadaddr", &data.os_address);
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getenv_ul("global.bootm.initrd.loadaddr", &data.initrd_address);
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data.initrd_file = getenv_or_null("global.bootm.initrd");
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data.verbose = verbose;
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data.dryrun = dryrun;
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ret = bootm_boot(&data);
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if (ret)
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pr_err("Booting %s failed: %s\n", basename(path), strerror(-ret));
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out:
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return ret;
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}
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/*
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* boot a script. 'name' can either be a filename under /env/boot/,
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* a full path to a boot script or a path to a directory. This function
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* returns a negative error on failure, or 0 on a successful dryrun boot.
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*/
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static int boot(const char *name)
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{
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char *path;
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DIR *dir;
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struct dirent *d;
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struct stat s;
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int ret;
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if (*name == '/')
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path = xstrdup(name);
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else
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path = asprintf("/env/boot/%s", name);
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ret = stat(path, &s);
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if (ret) {
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pr_err("%s: %s\n", path, strerror(-ret));
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goto out;
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}
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if (S_ISREG(s.st_mode)) {
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ret = boot_script(path);
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goto out;
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}
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dir = opendir(path);
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if (!dir) {
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ret = -errno;
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printf("cannot open %s: %s\n", path, strerror(-errno));
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goto out;
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}
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while ((d = readdir(dir))) {
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char *file;
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struct stat s;
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if (*d->d_name == '.')
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continue;
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file = asprintf("%s/%s", path, d->d_name);
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ret = stat(file, &s);
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if (ret) {
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free(file);
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continue;
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}
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if (!S_ISREG(s.st_mode)) {
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free(file);
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continue;
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}
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ret = boot_script(file);
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free(file);
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if (!ret)
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break;
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}
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closedir(dir);
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out:
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free(path);
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return ret;
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}
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static int do_boot(int argc, char *argv[])
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{
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const char *sources = NULL;
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char *source, *freep;
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int opt, ret = 0, do_list = 0;
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verbose = 0;
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dryrun = 0;
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while ((opt = getopt(argc, argv, "vld")) > 0) {
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switch (opt) {
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case 'v':
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verbose++;
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break;
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case 'l':
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do_list = 1;
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break;
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case 'd':
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dryrun = 1;
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break;
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}
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}
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if (do_list) {
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bootsources_list();
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return 0;
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}
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if (optind < argc) {
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while (optind < argc) {
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source = argv[optind];
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optind++;
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ret = boot(source);
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if (!ret)
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break;
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}
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return ret;
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}
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sources = getenv("global.boot.default");
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if (!sources)
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return 0;
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freep = source = xstrdup(sources);
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while (1) {
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char *sep = strchr(source, ' ');
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if (sep)
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*sep = 0;
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ret = boot(source);
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if (!ret)
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break;
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if (sep)
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source = sep + 1;
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else
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break;
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}
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free(freep);
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return ret;
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}
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BAREBOX_CMD_HELP_START(boot)
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BAREBOX_CMD_HELP_USAGE("boot [OPTIONS] [BOOTSRC...]\n")
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BAREBOX_CMD_HELP_SHORT("Boot an operating system.\n")
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BAREBOX_CMD_HELP_SHORT("[BOOTSRC...] can be:\n")
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BAREBOX_CMD_HELP_SHORT("- a filename from /env/boot/\n")
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BAREBOX_CMD_HELP_SHORT("- a full path to a file\n")
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BAREBOX_CMD_HELP_SHORT("- a path to a directory. All files in this directory are treated\n")
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BAREBOX_CMD_HELP_SHORT(" as boot scripts.\n")
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BAREBOX_CMD_HELP_SHORT("Multiple bootsources may be given which are probed in order until\n")
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BAREBOX_CMD_HELP_SHORT("one succeeds.\n")
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BAREBOX_CMD_HELP_SHORT("\nOptions:\n")
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BAREBOX_CMD_HELP_OPT ("-v","Increase verbosity\n")
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BAREBOX_CMD_HELP_OPT ("-d","Dryrun. See what happens but do no actually boot\n")
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BAREBOX_CMD_HELP_OPT ("-l","List available boot sources\n")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(boot)
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.cmd = do_boot,
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.usage = "boot the machine",
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BAREBOX_CMD_HELP(cmd_boot_help)
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BAREBOX_CMD_END
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BAREBOX_MAGICVAR_NAMED(global_boot_default, global.boot.default, "default boot order");
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