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| author | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2016-12-09 11:03:15 +0000 |
|---|---|---|
| committer | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2016-12-15 14:08:26 +0000 |
| commit | d780699b5e70337c411bc38e470de4eab03af4b6 (patch) | |
| tree | 638fe334a4bb273fe27fc48dbe1b1cbb543a57b0 /drivers/arm | |
| parent | a4af0c2e8409696667695f3781a22cba2eafbd2c (diff) | |
| download | arm-trusted-firmware-d780699b5e70337c411bc38e470de4eab03af4b6.tar.gz | |
GICv3: Introduce power management APIs for Redistributor
Some GICv3 implementations have provision for power management
operations at Redistributor level. This patch introduces and provides
place-holders for Redistributor power management. The default
implementations are empty stubs, but are weakly bound so as to enable
implementation-specific drivers to override them.
Change-Id: I4fec1358693d3603ca5dce242a2f7f0e730516d8
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
Diffstat (limited to 'drivers/arm')
| -rw-r--r-- | drivers/arm/gic/v3/gicv3_main.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/arm/gic/v3/gicv3_main.c b/drivers/arm/gic/v3/gicv3_main.c index ac433725..5abaa1ce 100644 --- a/drivers/arm/gic/v3/gicv3_main.c +++ b/drivers/arm/gic/v3/gicv3_main.c @@ -40,6 +40,13 @@ static const gicv3_driver_data_t *driver_data; static unsigned int gicv2_compat; +/* + * Redistributor power operations are weakly bound so that they can be + * overridden + */ +#pragma weak gicv3_rdistif_off +#pragma weak gicv3_rdistif_on + /******************************************************************************* * This function initialises the ARM GICv3 driver in EL3 with provided platform * inputs. @@ -188,6 +195,9 @@ void gicv3_rdistif_init(unsigned int proc_num) assert(IS_IN_EL3()); + /* Power on redistributor */ + gicv3_rdistif_on(proc_num); + gicr_base = driver_data->rdistif_base_addrs[proc_num]; /* Set the default attribute of all SGIs and PPIs */ @@ -211,6 +221,19 @@ void gicv3_rdistif_init(unsigned int proc_num) } /******************************************************************************* + * Functions to perform power operations on GIC Redistributor + ******************************************************************************/ +void gicv3_rdistif_off(unsigned int proc_num) +{ + return; +} + +void gicv3_rdistif_on(unsigned int proc_num) +{ + return; +} + +/******************************************************************************* * This function enables the GIC CPU interface of the calling CPU using only * system register accesses. ******************************************************************************/ |