psci: add features/reset2 support
Adds support for:
* PSCI_FEATURES, which was introduced in PSCI 1.0. This provides API
that allows discovering whether a specific PSCI function is implemented
and its features.
* SYSTEM_RESET2, which was introduced in PSCI 1.1, which extends existing
SYSTEM_RESET. It provides support for vendor-specific resets, providing
reset_type as an additional param.
For additional details visit [1].
Implementations of some functions were borrowed from Linux PSCI driver
code [2].
[1] https://developer.arm.com/documentation/den0022/latest/
[2] drivers/firmware/psci/psci.c
Signed-off-by: Igor Opaniuk <igor.opaniuk@foundries.io>
diff --git a/include/linux/psci.h b/include/linux/psci.h
index 38edde3..c78c107 100644
--- a/include/linux/psci.h
+++ b/include/linux/psci.h
@@ -118,6 +118,9 @@
#ifdef CONFIG_ARM_PSCI_FW
unsigned long invoke_psci_fn(unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3);
+void psci_sys_reset(u32 type);
+void psci_sys_poweroff(void);
+
#else
static inline unsigned long invoke_psci_fn(unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3)