ARMv8/PSCI: Fixup the device tree for PSCI
Set the enable-method in the cpu node to PSCI, and create device
node for PSCI, when PSCI was enabled.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/cpu/armv8/Makefile b/arch/arm/cpu/armv8/Makefile
index ee9e009..33e6db0 100644
--- a/arch/arm/cpu/armv8/Makefile
+++ b/arch/arm/cpu/armv8/Makefile
@@ -15,6 +15,7 @@
obj-y += tlb.o
obj-y += transition.o
obj-y += fwcall.o
+obj-y += cpu-dt.o
obj-$(CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT) += sec_firmware.o sec_firmware_asm.o
obj-$(CONFIG_FSL_LAYERSCAPE) += fsl-layerscape/
diff --git a/arch/arm/cpu/armv8/cpu-dt.c b/arch/arm/cpu/armv8/cpu-dt.c
new file mode 100644
index 0000000..9ffb49c
--- /dev/null
+++ b/arch/arm/cpu/armv8/cpu-dt.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2016 NXP Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/psci.h>
+#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
+#include <asm/armv8/sec_firmware.h>
+#endif
+
+int psci_update_dt(void *fdt)
+{
+#ifdef CONFIG_MP
+#if defined(CONFIG_ARMV8_PSCI)
+#ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
+ /*
+ * If the PSCI in SEC Firmware didn't work, avoid to update the
+ * device node of PSCI. But still return 0 instead of an error
+ * number to support detecting PSCI dynamically and then switching
+ * the SMP boot method between PSCI and spin-table.
+ */
+ if (sec_firmware_support_psci_version() == 0xffffffff)
+ return 0;
+#endif
+ fdt_psci(fdt);
+#endif
+#endif
+ return 0;
+}