mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-11-03 18:01:41 +01:00
b11ed7d602
Add a command to manipulate the bootcounter. This is useful if you can run device recovery from inside U-Boot and need to reset the bootcounter after executing that process as part of altbootcmd. Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com> Reviewed-by: Lukasz Majewski <lukma@denx.de>
62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <bootcount.h>
|
|
|
|
static int do_bootcount_print(cmd_tbl_t *cmdtp, int flag, int argc,
|
|
char * const argv[])
|
|
{
|
|
printf("%lu\n", bootcount_load());
|
|
return CMD_RET_SUCCESS;
|
|
}
|
|
|
|
static int do_bootcount_reset(cmd_tbl_t *cmdtp, int flag, int argc,
|
|
char * const argv[])
|
|
{
|
|
/*
|
|
* note that we're explicitly not resetting the environment
|
|
* variable, so you still have the old bootcounter available
|
|
*/
|
|
bootcount_store(0);
|
|
return CMD_RET_SUCCESS;
|
|
}
|
|
|
|
static cmd_tbl_t bootcount_sub[] = {
|
|
U_BOOT_CMD_MKENT(print, 1, 1, do_bootcount_print, "", ""),
|
|
U_BOOT_CMD_MKENT(reset, 1, 1, do_bootcount_reset, "", ""),
|
|
};
|
|
|
|
static int do_bootcount(cmd_tbl_t *cmdtp, int flag, int argc,
|
|
char * const argv[])
|
|
{
|
|
cmd_tbl_t *cp;
|
|
|
|
if (argc < 2)
|
|
return CMD_RET_USAGE;
|
|
|
|
/* drop initial "bootcount" arg */
|
|
argc--;
|
|
argv++;
|
|
|
|
cp = find_cmd_tbl(argv[0], bootcount_sub, ARRAY_SIZE(bootcount_sub));
|
|
if (cp)
|
|
return cp->cmd(cmdtp, flag, argc, argv);
|
|
|
|
return CMD_RET_USAGE;
|
|
}
|
|
|
|
#if CONFIG_IS_ENABLED(SYS_LONGHELP)
|
|
static char bootcount_help_text[] =
|
|
"print - print current bootcounter\n"
|
|
"reset - reset the bootcounter"
|
|
;
|
|
#endif
|
|
|
|
U_BOOT_CMD(bootcount, 2, 1, do_bootcount,
|
|
"bootcount",
|
|
#if CONFIG_IS_ENABLED(SYS_LONGHELP)
|
|
bootcount_help_text
|
|
#endif
|
|
);
|