Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 43 insertions, 0 deletions

diff --git a/roms/u-boot/drivers/bootcount/bootcount_i2c.c b/roms/u-boot/drivers/bootcount/bootcount_i2c.c
new file mode 100644
index 000000000..496741d63
--- /dev/null
+++ b/roms/u-boot/drivers/bootcount/bootcount_i2c.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2013
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ */
+
+#include <bootcount.h>
+#include <linux/compiler.h>
+#include <i2c.h>
+
+#define BC_MAGIC	0xbc
+
+void bootcount_store(ulong a)
+{
+	unsigned char buf[3];
+	int ret;
+
+	buf[0] = BC_MAGIC;
+	buf[1] = (a & 0xff);
+	ret = i2c_write(CONFIG_SYS_I2C_RTC_ADDR, CONFIG_SYS_BOOTCOUNT_ADDR,
+		  CONFIG_BOOTCOUNT_ALEN, buf, 2);
+	if (ret != 0)
+		puts("Error writing bootcount\n");
+}
+
+ulong bootcount_load(void)
+{
+	unsigned char buf[3];
+	int ret;
+
+	ret = i2c_read(CONFIG_SYS_I2C_RTC_ADDR, CONFIG_SYS_BOOTCOUNT_ADDR,
+		       CONFIG_BOOTCOUNT_ALEN, buf, 2);
+	if (ret != 0) {
+		puts("Error loading bootcount\n");
+		return 0;
+	}
+	if (buf[0] == BC_MAGIC)
+		return buf[1];
+
+	bootcount_store(0);
+
+	return 0;
+}