bootcount: flush after storing the bootcounter
If the bootcounter address is in a cached memory,
a flush of dcache must occur after updateing the bootcounter.
Issue found on i.MX6 where bootcounter is put into the internal
(cached) IRAM.
Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/drivers/bootcount/bootcount.c b/drivers/bootcount/bootcount.c
index e00d81c..a3162c9 100644
--- a/drivers/bootcount/bootcount.c
+++ b/drivers/bootcount/bootcount.c
@@ -18,6 +18,9 @@
raw_bootcount_store(reg, a);
raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC);
#endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD */
+ flush_dcache_range(CONFIG_SYS_BOOTCOUNT_ADDR,
+ CONFIG_SYS_BOOTCOUNT_ADDR +
+ CONFIG_SYS_CACHELINE_SIZE);
}
__weak ulong bootcount_load(void)