[U-Boot] [PATCH v1 1/3] ARM: socfpga: stratix10: Enable PSCI system reset

[chee.hong.ang at intel.com]

From: "Ang, Chee Hong" <chee.hong.ang at intel.com>

Enable psci_system_reset support for Stratix10. This PSCI function
will eventually trigger the mailbox HPS_REBOOT to SDM.

Signed-off-by: Ang, Chee Hong <chee.hong.ang at intel.com>
---
 arch/arm/mach-socfpga/Makefile |  3 +++
 arch/arm/mach-socfpga/psci.c   | 21 +++++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 arch/arm/mach-socfpga/psci.c

diff --git a/arch/arm/mach-socfpga/Makefile b/arch/arm/mach-socfpga/Makefile
index e667204..f77b229 100644
--- a/arch/arm/mach-socfpga/Makefile
+++ b/arch/arm/mach-socfpga/Makefile
@@ -38,6 +38,9 @@ obj-y	+= system_manager_s10.o
 obj-y	+= timer_s10.o
 obj-y	+= wrap_pinmux_config_s10.o
 obj-y	+= wrap_pll_config_s10.o
+ifndef CONFIG_SPL_BUILD
+obj-$(CONFIG_ARMV8_PSCI)	+= psci.o
+endif
 endif
 
 ifdef CONFIG_SPL_BUILD
diff --git a/arch/arm/mach-socfpga/psci.c b/arch/arm/mach-socfpga/psci.c
new file mode 100644
index 0000000..9ef3931
--- /dev/null
+++ b/arch/arm/mach-socfpga/psci.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2017 Intel Corporation <www.intel.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/psci.h>
+#include <errno.h>
+#include <asm/arch/mailbox_s10.h>
+#include <asm/secure.h>
+
+void __noreturn __secure psci_system_reset(void)
+{
+	mbox_send_cmd_psci(MBOX_ID_UBOOT, MBOX_REBOOT_HPS,
+			   MBOX_CMD_DIRECT, 0, NULL, 0, 0, NULL);
+
+	while (1)
+		;
+}
-- 
2.7.4