bootcount: Use predefined count/magic bit masks

Use predefined bit masks in operations where only the magic half or
only the count half of the 32-bit value are processed.

Signed-off-by: Niko Mauno <[email protected]>
Reviewed-by: Tom Rini <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/bootcount.h b/include/bootcount.h
index 847c0f02d98..86474569d36 100644
--- a/include/bootcount.h
+++ b/include/bootcount.h
@@ -10,6 +10,7 @@
 #include <asm/io.h>
 #include <asm/byteorder.h>
 #include <env.h>
+#include <linux/bitops.h>
 
 #ifdef CONFIG_DM_BOOTCOUNT
 
@@ -59,6 +60,10 @@ int dm_bootcount_set(struct udevice *dev, u32 bootcount);
 
 #endif
 
+/* Bit masks for magic and count parts in single word scheme */
+#define BOOTCOUNT_MAGIC_MASK	GENMASK(31, 16)
+#define BOOTCOUNT_COUNT_MASK	GENMASK(15, 0)
+
 /** bootcount_store() - store the current bootcount */
 void bootcount_store(ulong);