Enabling the watchdog before booting the kernel is a common usecase. Add an option to the boot command and also add a global variable for it to make it configurable easily. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
516 lines
12 KiB
C
516 lines
12 KiB
C
/*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#include <environment.h>
|
|
#include <globalvar.h>
|
|
#include <magicvar.h>
|
|
#include <watchdog.h>
|
|
#include <command.h>
|
|
#include <readkey.h>
|
|
#include <common.h>
|
|
#include <getopt.h>
|
|
#include <blspec.h>
|
|
#include <libgen.h>
|
|
#include <malloc.h>
|
|
#include <clock.h>
|
|
#include <boot.h>
|
|
#include <glob.h>
|
|
#include <init.h>
|
|
#include <menu.h>
|
|
#include <fs.h>
|
|
#include <complete.h>
|
|
|
|
#include <linux/stat.h>
|
|
|
|
static int verbose;
|
|
static int dryrun;
|
|
static int timeout;
|
|
|
|
/*
|
|
* Start a single boot script. 'path' is a full path to a boot script.
|
|
*/
|
|
static int boot_script(char *path)
|
|
{
|
|
int ret;
|
|
struct bootm_data data = {
|
|
.os_address = UIMAGE_SOME_ADDRESS,
|
|
.initrd_address = UIMAGE_SOME_ADDRESS,
|
|
};
|
|
|
|
globalvar_set_match("linux.bootargs.dyn.", "");
|
|
globalvar_set_match("bootm.", "");
|
|
|
|
ret = run_command(path);
|
|
if (ret) {
|
|
printf("Running %s failed\n", path);
|
|
goto out;
|
|
}
|
|
|
|
data.initrd_address = UIMAGE_INVALID_ADDRESS;
|
|
data.os_address = UIMAGE_SOME_ADDRESS;
|
|
data.oftree_file = getenv_nonempty("global.bootm.oftree");
|
|
data.os_file = getenv_nonempty("global.bootm.image");
|
|
getenv_ul("global.bootm.image.loadaddr", &data.os_address);
|
|
getenv_ul("global.bootm.initrd.loadaddr", &data.initrd_address);
|
|
data.initrd_file = getenv_nonempty("global.bootm.initrd");
|
|
data.verbose = verbose;
|
|
data.dryrun = dryrun;
|
|
|
|
ret = bootm_boot(&data);
|
|
if (ret)
|
|
pr_err("Booting %s failed: %s\n", basename(path), strerror(-ret));
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static unsigned int boot_watchdog_timeout;
|
|
|
|
static int init_boot_watchdog_timeout(void)
|
|
{
|
|
return globalvar_add_simple_int("boot.watchdog_timeout",
|
|
&boot_watchdog_timeout, "%u");
|
|
}
|
|
late_initcall(init_boot_watchdog_timeout);
|
|
|
|
BAREBOX_MAGICVAR_NAMED(global_watchdog_timeout, global.boot.watchdog_timeout,
|
|
"Watchdog enable timeout in seconds before booting");
|
|
|
|
static int boot_entry(struct blspec_entry *be)
|
|
{
|
|
int ret;
|
|
|
|
if (IS_ENABLED(CONFIG_WATCHDOG) && boot_watchdog_timeout) {
|
|
ret = watchdog_set_timeout(boot_watchdog_timeout);
|
|
if (ret)
|
|
pr_warn("Failed to enable watchdog: %s\n", strerror(-ret));
|
|
}
|
|
|
|
if (be->scriptpath) {
|
|
ret = boot_script(be->scriptpath);
|
|
} else {
|
|
if (IS_ENABLED(CONFIG_BLSPEC))
|
|
ret = blspec_boot(be, verbose, dryrun);
|
|
else
|
|
ret = -ENOSYS;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void bootsource_action(struct menu *m, struct menu_entry *me)
|
|
{
|
|
struct blspec_entry *be = container_of(me, struct blspec_entry, me);
|
|
int ret;
|
|
|
|
ret = boot_entry(be);
|
|
if (ret)
|
|
printf("Booting failed with: %s\n", strerror(-ret));
|
|
|
|
printf("Press any key to continue\n");
|
|
|
|
read_key();
|
|
}
|
|
|
|
/*
|
|
* bootscript_create_entry - create a boot entry from a script name
|
|
*/
|
|
static int bootscript_create_entry(struct blspec *blspec, const char *name)
|
|
{
|
|
struct blspec_entry *be;
|
|
enum filetype type;
|
|
|
|
type = file_name_detect_type(name);
|
|
if (type != filetype_sh)
|
|
return -EINVAL;
|
|
|
|
be = blspec_entry_alloc(blspec);
|
|
be->me.type = MENU_ENTRY_NORMAL;
|
|
be->scriptpath = xstrdup(name);
|
|
be->me.display = xstrdup(basename(be->scriptpath));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* bootscript_scan_path - create boot entries from a path
|
|
*
|
|
* path can either be a full path to a bootscript or a full path to a diretory
|
|
* containing bootscripts.
|
|
*/
|
|
static int bootscript_scan_path(struct blspec *blspec, const char *path)
|
|
{
|
|
struct stat s;
|
|
char *files;
|
|
int ret, i;
|
|
int found = 0;
|
|
glob_t globb;
|
|
|
|
ret = stat(path, &s);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!S_ISDIR(s.st_mode)) {
|
|
ret = bootscript_create_entry(blspec, path);
|
|
if (ret)
|
|
return ret;
|
|
return 1;
|
|
}
|
|
|
|
files = asprintf("%s/*", path);
|
|
|
|
glob(files, 0, NULL, &globb);
|
|
|
|
for (i = 0; i < globb.gl_pathc; i++) {
|
|
char *bootscript_path = globb.gl_pathv[i];
|
|
|
|
if (*basename(bootscript_path) == '.')
|
|
continue;
|
|
|
|
bootscript_create_entry(blspec, bootscript_path);
|
|
found++;
|
|
}
|
|
|
|
globfree(&globb);
|
|
free(files);
|
|
|
|
ret = found;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* bootentry_parse_one - create boot entries from a name
|
|
*
|
|
* name can be:
|
|
* - a name of a boot script under /env/boot
|
|
* - a full path of a boot script
|
|
* - a device name
|
|
* - a cdev name
|
|
* - a full path of a directory containing bootloader spec entries
|
|
* - a full path of a directory containing bootscripts
|
|
*
|
|
* Returns the number of entries found or a negative error code.
|
|
*/
|
|
static int bootentry_parse_one(struct blspec *blspec, const char *name)
|
|
{
|
|
int found = 0, ret;
|
|
|
|
if (IS_ENABLED(CONFIG_BLSPEC)) {
|
|
ret = blspec_scan_devicename(blspec, name);
|
|
if (ret > 0)
|
|
found += ret;
|
|
ret = blspec_scan_directory(blspec, name);
|
|
if (ret > 0)
|
|
found += ret;
|
|
}
|
|
|
|
if (!found) {
|
|
char *path;
|
|
|
|
if (*name != '/')
|
|
path = asprintf("/env/boot/%s", name);
|
|
else
|
|
path = xstrdup(name);
|
|
|
|
ret = bootscript_scan_path(blspec, path);
|
|
if (ret > 0)
|
|
found += ret;
|
|
|
|
free(path);
|
|
}
|
|
|
|
return found;
|
|
}
|
|
|
|
/*
|
|
* bootentries_collect - collect bootentries from an array of names
|
|
*/
|
|
static struct blspec *bootentries_collect(char *entries[], int num_entries)
|
|
{
|
|
struct blspec *blspec;
|
|
int i;
|
|
|
|
blspec = blspec_alloc();
|
|
|
|
if (IS_ENABLED(CONFIG_MENU))
|
|
blspec->menu->display = asprintf("boot");
|
|
|
|
if (!num_entries)
|
|
bootscript_scan_path(blspec, "/env/boot");
|
|
|
|
if (IS_ENABLED(CONFIG_BLSPEC) && !num_entries)
|
|
blspec_scan_devices(blspec);
|
|
|
|
for (i = 0; i < num_entries; i++)
|
|
bootentry_parse_one(blspec, entries[i]);
|
|
|
|
return blspec;
|
|
}
|
|
|
|
/*
|
|
* bootsources_menu - show a menu from an array of names
|
|
*/
|
|
static void bootsources_menu(char *entries[], int num_entries)
|
|
{
|
|
struct blspec *blspec = NULL;
|
|
struct blspec_entry *entry, *entry_default;
|
|
struct menu_entry *back_entry;
|
|
|
|
if (!IS_ENABLED(CONFIG_MENU)) {
|
|
printf("no menu support available\n");
|
|
return;
|
|
}
|
|
|
|
blspec = bootentries_collect(entries, num_entries);
|
|
if (!blspec)
|
|
return;
|
|
|
|
entry_default = blspec_entry_default(blspec);
|
|
|
|
blspec_for_each_entry(blspec, entry) {
|
|
entry->me.action = bootsource_action;
|
|
menu_add_entry(blspec->menu, &entry->me);
|
|
if (entry == entry_default)
|
|
menu_set_selected_entry(blspec->menu, &entry->me);
|
|
}
|
|
|
|
back_entry = xzalloc(sizeof(*back_entry));
|
|
back_entry->display = "back";
|
|
back_entry->type = MENU_ENTRY_NORMAL;
|
|
back_entry->non_re_ent = 1;
|
|
menu_add_entry(blspec->menu, back_entry);
|
|
|
|
if (timeout >= 0)
|
|
blspec->menu->auto_select = timeout;
|
|
|
|
menu_show(blspec->menu);
|
|
|
|
free(back_entry);
|
|
|
|
blspec_free(blspec);
|
|
}
|
|
|
|
/*
|
|
* bootsources_list - list boot entries from an array of names
|
|
*/
|
|
static void bootsources_list(char *entries[], int num_entries)
|
|
{
|
|
struct blspec *blspec;
|
|
struct blspec_entry *entry, *entry_default;
|
|
|
|
blspec = bootentries_collect(entries, num_entries);
|
|
if (!blspec)
|
|
return;
|
|
|
|
entry_default = blspec_entry_default(blspec);
|
|
|
|
printf(" %-20s %-20s %s\n", "device", "hwdevice", "title");
|
|
printf(" %-20s %-20s %s\n", "------", "--------", "-----");
|
|
|
|
blspec_for_each_entry(blspec, entry) {
|
|
if (entry == entry_default)
|
|
printf("* ");
|
|
else
|
|
printf(" ");
|
|
|
|
if (entry->scriptpath)
|
|
printf("%-40s %s\n", basename(entry->scriptpath), entry->me.display);
|
|
else
|
|
printf("%s\n", entry->me.display);
|
|
}
|
|
|
|
blspec_free(blspec);
|
|
}
|
|
|
|
/*
|
|
* boot a script or a bootspec entry. 'name' can be:
|
|
* - a filename under /env/boot/
|
|
* - a full path to a boot script
|
|
* - a device name
|
|
* - a partition name under /dev/
|
|
* - a full path to a directory which
|
|
* - contains boot scripts, or
|
|
* - contains a loader/entries/ directory containing bootspec entries
|
|
*
|
|
* Returns a negative error on failure, or 0 on a successful dryrun boot.
|
|
*/
|
|
static int boot(const char *name)
|
|
{
|
|
struct blspec *blspec;
|
|
struct blspec_entry *entry, *entry_default;
|
|
int ret;
|
|
|
|
blspec = blspec_alloc();
|
|
ret = bootentry_parse_one(blspec, name);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!ret) {
|
|
printf("Nothing bootable found on %s\n", name);
|
|
return -ENOENT;
|
|
}
|
|
|
|
entry_default = blspec_entry_default(blspec);
|
|
if (entry_default) {
|
|
ret = boot_entry(entry_default);
|
|
if (!ret)
|
|
return ret;
|
|
printf("booting %s failed: %s\n", entry_default->me.display,
|
|
strerror(-ret));
|
|
}
|
|
|
|
blspec_for_each_entry(blspec, entry) {
|
|
if (entry == entry_default)
|
|
continue;
|
|
|
|
printf("booting %s\n", entry->me.display);
|
|
ret = boot_entry(entry);
|
|
if (!ret)
|
|
break;
|
|
printf("booting %s failed: %s\n", entry->me.display, strerror(-ret));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int do_boot(int argc, char *argv[])
|
|
{
|
|
char *freep = NULL;
|
|
int opt, ret = 0, do_list = 0, do_menu = 0;
|
|
char **sources;
|
|
int num_sources;
|
|
int i;
|
|
|
|
verbose = 0;
|
|
dryrun = 0;
|
|
timeout = -1;
|
|
|
|
while ((opt = getopt(argc, argv, "vldmt:w:")) > 0) {
|
|
switch (opt) {
|
|
case 'v':
|
|
verbose++;
|
|
break;
|
|
case 'l':
|
|
do_list = 1;
|
|
break;
|
|
case 'd':
|
|
dryrun = 1;
|
|
break;
|
|
case 'm':
|
|
do_menu = 1;
|
|
break;
|
|
case 't':
|
|
timeout = simple_strtoul(optarg, NULL, 0);
|
|
break;
|
|
case 'w':
|
|
boot_watchdog_timeout = simple_strtoul(optarg, NULL, 0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (optind < argc) {
|
|
num_sources = argc - optind;
|
|
sources = xmemdup(&argv[optind], sizeof(char *) * num_sources);
|
|
} else {
|
|
const char *def;
|
|
char *sep;
|
|
|
|
def = getenv("global.boot.default");
|
|
if (!def)
|
|
return 0;
|
|
|
|
sep = freep = xstrdup(def);
|
|
|
|
num_sources = 0;
|
|
|
|
while (1) {
|
|
num_sources++;
|
|
|
|
sep = strchr(sep, ' ');
|
|
if (!sep)
|
|
break;
|
|
sep++;
|
|
}
|
|
|
|
sources = xmalloc(sizeof(char *) * num_sources);
|
|
|
|
sep = freep;
|
|
|
|
for (i = 0; i < num_sources; i++) {
|
|
sources[i] = sep;
|
|
sep = strchr(sep, ' ');
|
|
if (sep)
|
|
*sep = 0;
|
|
sep++;
|
|
}
|
|
}
|
|
|
|
if (do_list) {
|
|
bootsources_list(sources, num_sources);
|
|
goto out;
|
|
}
|
|
|
|
if (do_menu) {
|
|
bootsources_menu(sources, num_sources);
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < num_sources; i++) {
|
|
ret = boot(sources[i]);
|
|
if (!ret)
|
|
break;
|
|
}
|
|
|
|
out:
|
|
free(sources);
|
|
free(freep);
|
|
|
|
return ret;
|
|
}
|
|
|
|
BAREBOX_CMD_HELP_START(boot)
|
|
BAREBOX_CMD_HELP_TEXT("This is for booting based on scripts. Unlike the bootm command which")
|
|
BAREBOX_CMD_HELP_TEXT("can boot a single image this command offers the possibility to boot with")
|
|
BAREBOX_CMD_HELP_TEXT("scripts (by default placed under /env/boot/).")
|
|
BAREBOX_CMD_HELP_TEXT("")
|
|
BAREBOX_CMD_HELP_TEXT("BOOTSRC can be:")
|
|
BAREBOX_CMD_HELP_TEXT("- a filename under /env/boot/")
|
|
BAREBOX_CMD_HELP_TEXT("- a full path to a boot script")
|
|
BAREBOX_CMD_HELP_TEXT("- a device name")
|
|
BAREBOX_CMD_HELP_TEXT("- a partition name under /dev/")
|
|
BAREBOX_CMD_HELP_TEXT("- a full path to a directory which")
|
|
BAREBOX_CMD_HELP_TEXT(" - contains boot scripts, or")
|
|
BAREBOX_CMD_HELP_TEXT(" - contains a loader/entries/ directory containing bootspec entries")
|
|
BAREBOX_CMD_HELP_TEXT("")
|
|
BAREBOX_CMD_HELP_TEXT("Multiple bootsources may be given which are probed in order until")
|
|
BAREBOX_CMD_HELP_TEXT("one succeeds.")
|
|
BAREBOX_CMD_HELP_TEXT("")
|
|
BAREBOX_CMD_HELP_TEXT("Options:")
|
|
BAREBOX_CMD_HELP_OPT ("-v","Increase verbosity")
|
|
BAREBOX_CMD_HELP_OPT ("-d","Dryrun. See what happens but do no actually boot")
|
|
BAREBOX_CMD_HELP_OPT ("-l","List available boot sources")
|
|
BAREBOX_CMD_HELP_OPT ("-m","Show a menu with boot options")
|
|
BAREBOX_CMD_HELP_OPT ("-w SECS","Start watchdog with timeout SECS before booting")
|
|
BAREBOX_CMD_HELP_OPT ("-t SECS","specify timeout in SECS")
|
|
BAREBOX_CMD_HELP_END
|
|
|
|
BAREBOX_CMD_START(boot)
|
|
.cmd = do_boot,
|
|
BAREBOX_CMD_DESC("boot from script, device, ...")
|
|
BAREBOX_CMD_OPTS("[-vdlmt] [BOOTSRC...]")
|
|
BAREBOX_CMD_GROUP(CMD_GRP_BOOT)
|
|
BAREBOX_CMD_HELP(cmd_boot_help)
|
|
BAREBOX_CMD_END
|
|
|
|
BAREBOX_MAGICVAR_NAMED(global_boot_default, global.boot.default, "default boot order");
|