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| author | Soby Mathew <soby.mathew@arm.com> | 2015-04-16 14:49:09 +0100 |
|---|---|---|
| committer | Achin Gupta <achin.gupta@arm.com> | 2015-08-13 23:48:06 +0100 |
| commit | 2204afded5cf9557ef1bb934fd15a74b9fb42244 (patch) | |
| tree | 77406b284e6230237ab20a0ff3fe09a2ac9d00c0 /plat/arm/css/common/css_pm.c | |
| parent | 38dce70f51fb83b27958ba3e2ad15f5635cb1061 (diff) | |
PSCI: Demonstrate support for composite power states
This patch adds support to the Juno and FVP ports for composite power states
with both the original and extended state-id power-state formats. Both the
platform ports use the recommended state-id encoding as specified in
Section 6.5 of the PSCI specification (ARM DEN 0022C). The platform build flag
ARM_RECOM_STATE_ID_ENC is used to include this support.
By default, to maintain backwards compatibility, the original power state
parameter format is used and the state-id field is expected to be zero.
Change-Id: Ie721b961957eaecaca5bf417a30952fe0627ef10
Diffstat (limited to 'plat/arm/css/common/css_pm.c')
| -rw-r--r-- | plat/arm/css/common/css_pm.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/plat/arm/css/common/css_pm.c b/plat/arm/css/common/css_pm.c index 55b17039..49c364d5 100644 --- a/plat/arm/css/common/css_pm.c +++ b/plat/arm/css/common/css_pm.c @@ -43,6 +43,27 @@ unsigned long wakeup_address; +#if ARM_RECOM_STATE_ID_ENC +/* + * The table storing the valid idle power states. Ensure that the + * array entries are populated in ascending order of state-id to + * enable us to use binary search during power state validation. + * The table must be terminated by a NULL entry. + */ +const unsigned int arm_pm_idle_states[] = { + /* State-id - 0x01 */ + arm_make_pwrstate_lvl1(ARM_LOCAL_STATE_RUN, ARM_LOCAL_STATE_RET, + ARM_PWR_LVL0, PSTATE_TYPE_STANDBY), + /* State-id - 0x02 */ + arm_make_pwrstate_lvl1(ARM_LOCAL_STATE_RUN, ARM_LOCAL_STATE_OFF, + ARM_PWR_LVL0, PSTATE_TYPE_POWERDOWN), + /* State-id - 0x22 */ + arm_make_pwrstate_lvl1(ARM_LOCAL_STATE_OFF, ARM_LOCAL_STATE_OFF, + ARM_PWR_LVL1, PSTATE_TYPE_POWERDOWN), + 0, +}; +#endif + /******************************************************************************* * Private function to program the mailbox for a cpu before it is released * from reset. |