From 35100c31016b4afbbc1e6885a424ca5db15a42ed Mon Sep 17 00:00:00 2001
From: Keunyoung Park <keun0.park@samsung.com>
Date: Thu, 5 Apr 2018 11:11:16 +0900
Subject: [PATCH] [COMMON] soc: samsung: add codes for Security Dump Manager

Change-Id: I9863edba61b8f35c0407f809ab03abab9ea61d63
Signed-off-by: Keunyoung Park <keun0.park@samsung.com>
---
 arch/arm64/kernel/smp.c          |  2 ++
 drivers/soc/samsung/Makefile     |  3 +++
 drivers/soc/samsung/exynos-sdm.c | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 37 insertions(+)
 create mode 100644 drivers/soc/samsung/exynos-sdm.c

diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 20705f5090e2..6a8dc4d33f2e 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -58,6 +58,7 @@
 #include <asm/tlbflush.h>
 #include <asm/ptrace.h>
 #include <asm/virt.h>
+#include <soc/samsung/exynos-sdm.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/ipi.h>
@@ -841,6 +842,7 @@ static void ipi_cpu_stop(unsigned int cpu, struct pt_regs *regs)
 	local_irq_disable();
 
 	dbg_snapshot_save_context(regs);
+	exynos_sdm_flush_secdram();
 
 	while (1)
 		cpu_relax();
diff --git a/drivers/soc/samsung/Makefile b/drivers/soc/samsung/Makefile
index ee2ec4119f43..570793aacb30 100644
--- a/drivers/soc/samsung/Makefile
+++ b/drivers/soc/samsung/Makefile
@@ -51,3 +51,6 @@ obj-$(CONFIG_EXYNOS_SECURE_LOG)	+= exynos-seclog.o
 
 # HDCP
 obj-$(CONFIG_EXYNOS_HDCP2)  += exynos-hdcp/
+
+# SDM
+obj-$(CONFIG_EXYNOS_SDM) += exynos-sdm.o
diff --git a/drivers/soc/samsung/exynos-sdm.c b/drivers/soc/samsung/exynos-sdm.c
new file mode 100644
index 000000000000..a020953f510a
--- /dev/null
+++ b/drivers/soc/samsung/exynos-sdm.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ *	      http://www.samsung.com/
+ *
+ * EXYNOS - Security Dump Manager support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/smc.h>
+#include <linux/printk.h>
+
+int exynos_sdm_dump_secure_region(void)
+{
+	int ret;
+
+	ret = exynos_smc(SMC_CMD_DUMP_SECURE_REGION, 0, 0, 0);
+	pr_info("%s: 0x%x\n", __func__, ret);
+
+	return ret;
+}
+
+int exynos_sdm_flush_secdram(void)
+{
+	int ret;
+
+	ret = exynos_smc(SMC_CMD_FLUSH_SECDRAM, 0, 0, 0);
+
+	return ret;
+}
-- 
2.20.1