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feat(ti): add gic save and restore calls 

Add functions to save and restore GICv3 redist and dist contexts during
low power mode and then call these during the suspend entry and finish
psci handlers.

Change-Id: I26c2c0f3b7fc925de3b349499fa42d2405441577
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
This commit is contained in:
Dave Gerlach 2022-01-07 08:12:39 -06:00
parent cf5868b8cd
commit b40a467783
2 changed files with 25 additions and 0 deletions
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23
plat/ti/k3/common/k3_gicv3.c
View File

@ -19,6 +19,11 @@
/* The GICv3 driver only needs to be initialized in EL3 */
uintptr_t rdistif_base_addrs[PLATFORM_CORE_COUNT];
#if K3_PM_SYSTEM_SUSPEND
static gicv3_redist_ctx_t rdist_ctx[PLATFORM_CORE_COUNT];
static gicv3_dist_ctx_t dist_ctx;
#endif
static const interrupt_prop_t k3_interrupt_props[] = {
PLAT_ARM_G1S_IRQ_PROPS(INTR_GROUP1S),
PLAT_ARM_G0_IRQ_PROPS(INTR_GROUP0)
@ -88,3 +93,21 @@ void k3_gic_pcpu_init(void)
{
gicv3_rdistif_init(plat_my_core_pos());
}
#if K3_PM_SYSTEM_SUSPEND
void k3_gic_save_context(void)
{
for (unsigned int i = 0U; i < PLATFORM_CORE_COUNT; i++) {
gicv3_rdistif_save(i, &rdist_ctx[i]);
}
gicv3_distif_save(&dist_ctx);
}
void k3_gic_restore_context(void)
{
gicv3_distif_init_restore(&dist_ctx);
for (unsigned int i = 0U; i < PLATFORM_CORE_COUNT; i++) {
gicv3_rdistif_init_restore(i, &rdist_ctx[i]);
}
}
#endif

2
plat/ti/k3/include/k3_gicv3.h
View File

@ -14,5 +14,7 @@ void k3_gic_init(void);
void k3_gic_cpuif_enable(void);
void k3_gic_cpuif_disable(void);
void k3_gic_pcpu_init(void);
void k3_gic_save_context(void);
void k3_gic_restore_context(void);
#endif /* K3_GICV3_H */