ARM: HYP/non-sec: add generic ARMv7 PSCI code

Implement core support for PSCI. As this is generic code, it doesn't
implement anything really useful (all the functions are returning
Not Implemented).

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

1 files changed, 35 insertions, 0 deletions

diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h
new file mode 100644
index 0000000000..704b4b0018
--- /dev/null
+++ b/arch/arm/include/asm/psci.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2013 - ARM Ltd
+ * Author: Marc Zyngier <marc.zyngier@arm.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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ARM_PSCI_H__
+#define __ARM_PSCI_H__
+
+/* PSCI interface */
+#define ARM_PSCI_FN_BASE		0x95c1ba5e
+#define ARM_PSCI_FN(n)			(ARM_PSCI_FN_BASE + (n))
+
+#define ARM_PSCI_FN_CPU_SUSPEND		ARM_PSCI_FN(0)
+#define ARM_PSCI_FN_CPU_OFF		ARM_PSCI_FN(1)
+#define ARM_PSCI_FN_CPU_ON		ARM_PSCI_FN(2)
+#define ARM_PSCI_FN_MIGRATE		ARM_PSCI_FN(3)
+
+#define ARM_PSCI_RET_SUCCESS		0
+#define ARM_PSCI_RET_NI			(-1)
+#define ARM_PSCI_RET_INVAL		(-2)
+#define ARM_PSCI_RET_DENIED		(-3)
+
+#endif /* __ARM_PSCI_H__ */