Those two functions can be used to provide easy bootcount management.
Signed-off-by: Lukasz Majewski lukma@denx.de
---
Changes in v2: - None
include/bootcount.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
diff --git a/include/bootcount.h b/include/bootcount.h index e3b3f7028e..0ec9af6e2b 100644 --- a/include/bootcount.h +++ b/include/bootcount.h @@ -40,4 +40,29 @@ static inline u32 raw_bootcount_load(volatile u32 *addr) return in_be32(addr); } #endif + +#ifdef CONFIG_SPL_BOOTCOUNT_LIMIT +static inline bool bootcount_error(void) +{ + unsigned long bootcount = bootcount_load(); + unsigned long bootlimit = env_get_ulong("bootlimit", 10, 0); + + if (bootlimit && (bootcount > bootlimit)) { + printf("Warning: Bootlimit (%lu) exceeded.\n", bootlimit); + return true; + } + + return false; +} + +static inline void bootcount_inc(void) +{ + unsigned long bootcount = bootcount_load(); + + bootcount_store(++bootcount); +} +#else +static inline bool bootcount_error(void) { return false; } +static inline void bootcount_inc(void) {} +#endif /* CONFIG_SPL_BOOTCOUNT_LIMIT */ #endif /* _BOOTCOUNT_H__ */