1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/spl_data.c b/arch/arm/cpu/armv8/spl_data.c
new file mode 100644
index 0000000..8fd986a
--- /dev/null
+++ b/arch/arm/cpu/armv8/spl_data.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2020 NXP
+ */
+
+#include <common.h>
+#include <spl.h>
+
+char __data_save_start[0] __section(.__data_save_start);
+char __data_save_end[0] __section(.__data_save_end);
+
+u32 cold_reboot_flag = 1;
+
+void spl_save_restore_data(void)
+{
+	u32 data_size = __data_save_end - __data_save_start;
+
+	if (cold_reboot_flag == 1) {
+		/* Save data section to data_save section */
+		memcpy(__data_save_start, __data_save_start - data_size,
+		       data_size);
+	} else {
+		/* Restore the data_save section to data section */
+		memcpy(__data_save_start - data_size, __data_save_start,
+		       data_size);
+	}
+
+	cold_reboot_flag++;
+}