mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 13:14:27 +00:00
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>
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include <common.h>
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#include <command.h>
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#include <bootcount.h>
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static int do_bootcount_print(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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printf("%lu\n", bootcount_load());
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return CMD_RET_SUCCESS;
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}
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static int do_bootcount_reset(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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/*
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* note that we're explicitly not resetting the environment
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* variable, so you still have the old bootcounter available
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*/
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bootcount_store(0);
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return CMD_RET_SUCCESS;
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}
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static cmd_tbl_t bootcount_sub[] = {
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U_BOOT_CMD_MKENT(print, 1, 1, do_bootcount_print, "", ""),
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U_BOOT_CMD_MKENT(reset, 1, 1, do_bootcount_reset, "", ""),
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};
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static int do_bootcount(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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cmd_tbl_t *cp;
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if (argc < 2)
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return CMD_RET_USAGE;
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/* drop initial "bootcount" arg */
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argc--;
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argv++;
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cp = find_cmd_tbl(argv[0], bootcount_sub, ARRAY_SIZE(bootcount_sub));
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if (cp)
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return cp->cmd(cmdtp, flag, argc, argv);
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return CMD_RET_USAGE;
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}
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#if CONFIG_IS_ENABLED(SYS_LONGHELP)
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static char bootcount_help_text[] =
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"print - print current bootcounter\n"
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"reset - reset the bootcounter"
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;
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#endif
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U_BOOT_CMD(bootcount, 2, 1, do_bootcount,
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"bootcount",
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#if CONFIG_IS_ENABLED(SYS_LONGHELP)
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bootcount_help_text
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#endif
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);
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