diff options
| author | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2016-08-03 15:54:50 +0100 |
|---|---|---|
| committer | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2016-09-15 11:17:55 +0100 |
| commit | 28d3d614b57730bdf364e49259d3c42599d26145 (patch) | |
| tree | 5c86445a3cd7cdb46ccd2508264a7c41cc253b43 /include | |
| parent | 77b05323921c23e4261ddd8fee5c326a79b0af97 (diff) | |
PSCI: Add support for PSCI NODE_HW_STATE API
This patch adds support for NODE_HW_STATE PSCI API by introducing a new
PSCI platform hook (get_node_hw_state). The implementation validates
supplied arguments, and then invokes this platform-defined hook and
returns its result to the caller. PSCI capabilities are updated
accordingly.
Also updates porting and firmware design guides.
Change-Id: I808e55bdf0c157002a7c104b875779fe50a68a30
Diffstat (limited to 'include')
| -rw-r--r-- | include/lib/psci/psci.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/lib/psci/psci.h b/include/lib/psci/psci.h index a583fef7..02cbbf35 100644 --- a/include/lib/psci/psci.h +++ b/include/lib/psci/psci.h @@ -78,6 +78,8 @@ #define PSCI_SYSTEM_OFF 0x84000008 #define PSCI_SYSTEM_RESET 0x84000009 #define PSCI_FEATURES 0x8400000A +#define PSCI_NODE_HW_STATE_AARCH32 0x8400000d +#define PSCI_NODE_HW_STATE_AARCH64 0xc400000d #define PSCI_SYSTEM_SUSPEND_AARCH32 0x8400000E #define PSCI_SYSTEM_SUSPEND_AARCH64 0xc400000E #define PSCI_STAT_RESIDENCY_AARCH32 0x84000010 @@ -200,6 +202,17 @@ typedef enum { } aff_info_state_t; /* + * These are the power states reported by PSCI_NODE_HW_STATE API for the + * specified CPU. The definitions of these states can be found in Section 5.15.3 + * of PSCI specification (ARM DEN 0022C). + */ +typedef enum { + HW_ON = 0, + HW_OFF = 1, + HW_STANDBY = 2 +} node_hw_state_t; + +/* * Macro to represent invalid affinity level within PSCI. */ #define PSCI_INVALID_PWR_LVL (PLAT_MAX_PWR_LVL + 1) @@ -293,6 +306,7 @@ typedef struct plat_psci_ops { int (*translate_power_state_by_mpidr)(u_register_t mpidr, unsigned int power_state, psci_power_state_t *output_state); + int (*get_node_hw_state)(u_register_t mpidr, unsigned int power_level); } plat_psci_ops_t; /******************************************************************************* @@ -330,6 +344,8 @@ int psci_affinity_info(u_register_t target_affinity, int psci_migrate(u_register_t target_cpu); int psci_migrate_info_type(void); long psci_migrate_info_up_cpu(void); +int psci_node_hw_state(u_register_t target_cpu, + unsigned int power_level); int psci_features(unsigned int psci_fid); void __dead2 psci_power_down_wfi(void); void psci_arch_setup(void); |