andrius
/
arm-trusted-firmware
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

FVP: Avail GIC Redistributor power management 

Earlier patches introduced GIC Redistributor power management for ARM
platforms. This patch modifies FVP power management to power down
Redistributor during CPU power on/off.

Change-Id: I2adb9c50a7dd750019fe3b4e576b5d5fc364bffb
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
This commit is contained in:
Jeenu Viswambharan 2016-12-09 11:14:34 +00:00
parent d17b953ab3
commit 74a9578c20
1 changed files with 20 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
plat/arm/board/fvp/fvp_pm.c
View File

@ -64,19 +64,6 @@ const unsigned int arm_pm_idle_states[] = {
};
#endif
/*******************************************************************************
* Function which implements the common FVP specific operations to power down a
* cpu in response to a CPU_OFF or CPU_SUSPEND request.
******************************************************************************/
static void fvp_cpu_pwrdwn_common(void)
{
/* Prevent interrupts from spuriously waking up this cpu */
plat_arm_gic_cpuif_disable();
/* Program the power controller to power off this cpu. */
fvp_pwrc_write_ppoffr(read_mpidr_el1());
}
/*******************************************************************************
* Function which implements the common FVP specific operations to power down a
* cluster in response to a CPU_OFF or CPU_SUSPEND request.
@ -180,7 +167,15 @@ void fvp_pwr_domain_off(const psci_power_state_t *target_state)
* suspended. Perform at least the cpu specific actions followed
* by the cluster specific operations if applicable.
*/
fvp_cpu_pwrdwn_common();
/* Prevent interrupts from spuriously waking up this cpu */
plat_arm_gic_cpuif_disable();
/* Turn redistributor off */
plat_arm_gic_redistif_off();
/* Program the power controller to power off this cpu. */
fvp_pwrc_write_ppoffr(read_mpidr_el1());
if (target_state->pwr_domain_state[ARM_PWR_LVL1] ==
ARM_LOCAL_STATE_OFF)
@ -213,8 +208,17 @@ void fvp_pwr_domain_suspend(const psci_power_state_t *target_state)
/* Program the power controller to enable wakeup interrupts. */
fvp_pwrc_set_wen(mpidr);
/* Perform the common cpu specific operations */
fvp_cpu_pwrdwn_common();
/* Prevent interrupts from spuriously waking up this cpu */
plat_arm_gic_cpuif_disable();
/*
* The Redistributor is not powered off as it can potentially prevent
* wake up events reaching the CPUIF and/or might lead to losing
* register context.
*/
/* Program the power controller to power off this cpu. */
fvp_pwrc_write_ppoffr(read_mpidr_el1());
/* Perform the common cluster specific operations */
if (target_state->pwr_domain_state[ARM_PWR_LVL1] ==