Consolidate bootcount code into drivers/bootcount

This patch moves all bootcount implementations into a common
directory: drivers/bootcount. The generic bootcount driver
is now usable not only by powerpc platforms, but others as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Valentin Longchamp <valentin.longchamp@keymile.com>
Cc: Christian Riesch <christian.riesch@omicron.at>
Cc: Manfred Rudigier <manfred.rudigier@omicron.at>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Reinhard Meyer <reinhard.meyer@emk-elektronik.de>
Tested-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Tested-by: Christian Riesch <christian.riesch@omicron.at>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/drivers/bootcount/bootcount_davinci.c b/drivers/bootcount/bootcount_davinci.c
new file mode 100644
index 0000000000..1cd943630a
--- /dev/null
+++ b/drivers/bootcount/bootcount_davinci.c
@@ -0,0 +1,49 @@
+/*
+ * (C) Copyright 2011
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <bootcount.h>
+#include <asm/arch/da850_lowlevel.h>
+#include <asm/arch/davinci_misc.h>
+
+void bootcount_store(ulong a)
+{
+	struct davinci_rtc *reg =
+		(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
+
+	/*
+	 * write RTC kick register to enable write
+	 * for RTC Scratch registers. Scratch0 and 1 are
+	 * used for bootcount values.
+	 */
+	writel(RTC_KICK0R_WE, &reg->kick0r);
+	writel(RTC_KICK1R_WE, &reg->kick1r);
+	raw_bootcount_store(&reg->scratch0, a);
+	raw_bootcount_store(&reg->scratch1, BOOTCOUNT_MAGIC);
+}
+
+ulong bootcount_load(void)
+{
+	struct davinci_rtc *reg =
+		(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
+
+	if (raw_bootcount_load(&reg->scratch1) != BOOTCOUNT_MAGIC)
+		return 0;
+	else
+		return raw_bootcount_load(&reg->scratch0);
+}