From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 arch/arm/mach-exynos/firmware.c | 70 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 arch/arm/mach-exynos/firmware.c

(limited to 'arch/arm/mach-exynos/firmware.c')

diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
new file mode 100644
index 00000000..ed11f100
--- /dev/null
+++ b/arch/arm/mach-exynos/firmware.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics.
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ * Tomasz Figa <t.figa@samsung.com>
+ *
+ * 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/kernel.h>
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include <asm/firmware.h>
+
+#include <mach/map.h>
+
+#include "smc.h"
+
+static int exynos_do_idle(void)
+{
+	exynos_smc(SMC_CMD_SLEEP, 0, 0, 0);
+	return 0;
+}
+
+static int exynos_cpu_boot(int cpu)
+{
+	exynos_smc(SMC_CMD_CPU1BOOT, cpu, 0, 0);
+	return 0;
+}
+
+static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr)
+{
+	void __iomem *boot_reg = S5P_VA_SYSRAM_NS + 0x1c + 4*cpu;
+
+	__raw_writel(boot_addr, boot_reg);
+	return 0;
+}
+
+static const struct firmware_ops exynos_firmware_ops = {
+	.do_idle		= exynos_do_idle,
+	.set_cpu_boot_addr	= exynos_set_cpu_boot_addr,
+	.cpu_boot		= exynos_cpu_boot,
+};
+
+void __init exynos_firmware_init(void)
+{
+	if (of_have_populated_dt()) {
+		struct device_node *nd;
+		const __be32 *addr;
+
+		nd = of_find_compatible_node(NULL, NULL,
+						"samsung,secure-firmware");
+		if (!nd)
+			return;
+
+		addr = of_get_address(nd, 0, NULL, NULL);
+		if (!addr) {
+			pr_err("%s: No address specified.\n", __func__);
+			return;
+		}
+	}
+
+	pr_info("Running under secure firmware.\n");
+
+	register_firmware_ops(&exynos_firmware_ops);
+}
-- 
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