1 files changed, 31 insertions, 0 deletions
diff --git a/roms/skiboot/include/time-utils.h b/roms/skiboot/include/time-utils.h
new file mode 100644
index 000000000..0e9f837d4
--- /dev/null
+++ b/roms/skiboot/include/time-utils.h
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+/* Copyright 2013-2015 IBM Corp. */
+
+#ifndef __TIME_UTILS_H
+#define __TIME_UTILS_H
+
+#include <stdint.h>
+#include <time.h>
+
+/* BCD conversion utilities. MSB is byte 3, LSB is byte 0 */
+
+static inline unsigned int bcd_byte(uint32_t bcd, int byteno)
+{
+	bcd >>= byteno * 8;
+	return (bcd >> 4 & 0xf) * 10 + (bcd & 0xf);
+}
+
+static inline uint32_t int_to_bcd2(unsigned int x)
+{
+	return (((x / 10) << 4) & 0xf0) | (x % 10);
+}
+
+static inline uint32_t int_to_bcd4(unsigned int x)
+{
+	return int_to_bcd2(x / 100) << 8 | int_to_bcd2(x % 100);
+}
+
+void tm_to_datetime(struct tm *tm, uint32_t *y_m_d, uint64_t *h_m_s_m);
+void datetime_to_tm(uint32_t y_m_d, uint64_t h_m_s_m, struct tm *tm);
+
+#endif