1 files changed, 53 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/sec_firmware_asm.S b/arch/arm/cpu/armv8/sec_firmware_asm.S
new file mode 100644
index 0000000..0c6a462
--- /dev/null
+++ b/arch/arm/cpu/armv8/sec_firmware_asm.S
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2016 NXP Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+#include <asm/system.h>
+#include <asm/macro.h>
+
+WEAK(_sec_firmware_entry)
+	/*
+	 * x0: Secure Firmware entry point
+	 * x1: Exception return address Low
+	 * x2: Exception return address High
+	 */
+
+	/* Save stack pointer for EL2 */
+	mov	x3, sp
+	msr	sp_el2, x3
+
+	/* Set exception return address hold pointer */
+        adr	x4, 1f
+        mov	x3, x4
+#ifdef SEC_FIRMWARE_ERET_ADDR_REVERT
+        rev	w3, w3
+#endif
+        str	w3, [x1]
+        lsr	x3, x4, #32
+#ifdef SEC_FIRMWARE_ERET_ADDR_REVERT
+        rev	w3, w3
+#endif
+        str	w3, [x2]
+
+	/* Call SEC monitor */
+        br	x0
+
+1:
+        mov	x0, #0
+        ret
+ENDPROC(_sec_firmware_entry)
+
+#ifdef CONFIG_ARMV8_PSCI
+ENTRY(_sec_firmware_support_psci_version)
+	mov	x0, 0x84000000
+	mov	x1, 0x0
+	mov	x2, 0x0
+	mov	x3, 0x0
+	smc	#0
+	ret
+ENDPROC(_sec_firmware_support_psci_version)
+#endif