This patch adds a call to flush_dcache_range() to bootcount_store() to make sure, that the bootcounter data (including the patterns) is written to memory. Without this, platforms with dcache enabled may not have the bootcounter updated upon reset.
Signed-off-by: Stefan Roese sr@denx.de Cc: Valentin Longchamp valentin.longchamp@keymile.com --- drivers/bootcount/bootcount_ram.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/bootcount/bootcount_ram.c b/drivers/bootcount/bootcount_ram.c index 5bdabcd..e0d2669 100644 --- a/drivers/bootcount/bootcount_ram.c +++ b/drivers/bootcount/bootcount_ram.c @@ -35,6 +35,9 @@ void bootcount_store(ulong a) writel(patterns[i % NBR_OF_PATTERNS], &save_addr[i + OFFS_PATTERN]);
+ /* Make sure the data is written to RAM */ + flush_dcache_range((ulong)&save_addr[0], + (ulong)&save_addr[REPEAT_PATTERN + OFFS_PATTERN]); }
ulong bootcount_load(void)