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bootcounter_ram: Flush dcache after data is written into SDRAM

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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>
This commit is contained in:
Stefan Roese 2016-04-06 11:02:22 +02:00 committed by Tom Rini
parent d9b2678e0a
commit 20adda4cf8
1 changed files with 3 additions and 0 deletions
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3
drivers/bootcount/bootcount_ram.c
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@ -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)