From de274663f5429fe10c48a40f9fbf0c8aa553905d Mon Sep 17 00:00:00 2001
From: Peng Fan <peng.fan@nxp.com>
Date: Wed, 10 Jan 2018 13:20:23 +0800
Subject: imx: add sip function

Add SiP (Silicon Provider) services function to issue
SMC call to Arm Trusted Firmware.

More SiP information could be found in
  https://github.com/ARM-software/arm-trusted-firmware/blob/master/
  docs/arm-sip-service.rst

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
---
 arch/arm/mach-imx/sip.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 arch/arm/mach-imx/sip.c

(limited to 'arch/arm/mach-imx/sip.c')

diff --git a/arch/arm/mach-imx/sip.c b/arch/arm/mach-imx/sip.c
new file mode 100644
index 00000000000..b724330d358
--- /dev/null
+++ b/arch/arm/mach-imx/sip.c
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2017 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/sys_proto.h>
+
+unsigned long call_imx_sip(unsigned long id, unsigned long reg0,
+			   unsigned long reg1, unsigned long reg2)
+{
+	struct pt_regs regs;
+
+	regs.regs[0] = id;
+	regs.regs[1] = reg0;
+	regs.regs[2] = reg1;
+	regs.regs[3] = reg2;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
-- 
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