bootcount: Make bootcount magic configurable
Add new Kconfig option, SYS_BOOTCOUNT_MAGIC, to select the boot
counter magic word. This can be useful ie. in case the entire
boot counter register is not usable.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
diff --git a/drivers/bootcount/bootcount.c b/drivers/bootcount/bootcount.c
index 646c563..66c1284 100644
--- a/drivers/bootcount/bootcount.c
+++ b/drivers/bootcount/bootcount.c
@@ -16,13 +16,13 @@
uintptr_t flush_end;
#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
- raw_bootcount_store(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a);
+ raw_bootcount_store(reg, (CONFIG_SYS_BOOTCOUNT_MAGIC & 0xffff0000) | a);
flush_end = roundup(CONFIG_SYS_BOOTCOUNT_ADDR + 4,
CONFIG_SYS_CACHELINE_SIZE);
#else
raw_bootcount_store(reg, a);
- raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC);
+ raw_bootcount_store(reg + 4, CONFIG_SYS_BOOTCOUNT_MAGIC);
flush_end = roundup(CONFIG_SYS_BOOTCOUNT_ADDR + 8,
CONFIG_SYS_CACHELINE_SIZE);
@@ -37,12 +37,12 @@
#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
u32 tmp = raw_bootcount_load(reg);
- if ((tmp & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
+ if ((tmp & 0xffff0000) != (CONFIG_SYS_BOOTCOUNT_MAGIC & 0xffff0000))
return 0;
else
return (tmp & 0x0000ffff);
#else
- if (raw_bootcount_load(reg + 4) != BOOTCOUNT_MAGIC)
+ if (raw_bootcount_load(reg + 4) != CONFIG_SYS_BOOTCOUNT_MAGIC)
return 0;
else
return raw_bootcount_load(reg);