On Sat, 12 May 2018 05:49:47 +0000 Alex Kiernan alex.kiernan@gmail.com wrote:
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
cmd/Kconfig | 7 +++++++ cmd/Makefile | 1 + cmd/bootcount.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 69 insertions(+) create mode 100644 cmd/bootcount.c
diff --git a/cmd/Kconfig b/cmd/Kconfig index eb14e08..825d4ad 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -1218,6 +1218,13 @@ config CMD_BMP the image into RAM, then using this command to look at it or display it.
+config CMD_BOOTCOUNT
- bool "bootcount"
- depends on BOOTCOUNT_LIMIT
- help
Enable the bootcount command, which allows interrogationand
reset of the bootcounter.config CMD_BSP bool "Enable board-specific commands" help diff --git a/cmd/Makefile b/cmd/Makefile index 0d7322e..c05dc2b 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_CMD_BEDBUG) += bedbug.o obj-$(CONFIG_CMD_BINOP) += binop.o obj-$(CONFIG_CMD_BLOCK_CACHE) += blkcache.o obj-$(CONFIG_CMD_BMP) += bmp.o +obj-$(CONFIG_CMD_BOOTCOUNT) += bootcount.o obj-$(CONFIG_CMD_BOOTEFI) += bootefi.o obj-$(CONFIG_CMD_BOOTMENU) += bootmenu.o obj-$(CONFIG_CMD_BOOTSTAGE) += bootstage.o diff --git a/cmd/bootcount.c b/cmd/bootcount.c new file mode 100644 index 0000000..c358418 --- /dev/null +++ b/cmd/bootcount.c @@ -0,0 +1,61 @@ +// 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 +);
Reviewed-by: Lukasz Majewski lukma@denx.de
Best regards,
Lukasz Majewski
--
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