From 20adda4cf8980a9df1d966bd7bec918ac3e4e5d6 Mon Sep 17 00:00:00 2001 From: Stefan Roese <sr@denx.de> Date: Wed, 6 Apr 2016 11:02:22 +0200 Subject: [PATCH] bootcounter_ram: Flush dcache after data is written into SDRAM 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 5bdabcd562..e0d2669b71 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) -- 2.39.5