| Message ID | 1459933342-18264-1-git-send-email-sr@denx.de |
|---|---|
| State | Accepted |
| Commit | 20adda4cf8980a9df1d966bd7bec918ac3e4e5d6 |
| Delegated to: | Tom Rini |
| Headers | show |
On Wed, Apr 06, 2016 at 11:02:22AM +0200, Stefan Roese wrote: > 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> Applied to u-boot/master, thanks!
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)
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(+)