Tegra194: enable dual execution for EL2 and EL3
This patch enables dual execution optimized translations for EL2 and EL3
CPU exception levels.
Change-Id: I28fe98bb05687400f247e94adf44a1f3a85c38b1
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c b/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
index d92025b..bd82004 100644
--- a/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
+++ b/plat/nvidia/tegra/soc/t194/plat_psci_handlers.c
@@ -368,7 +368,11 @@
int32_t tegra_soc_pwr_domain_on_finish(const psci_power_state_t *target_state)
{
+ const plat_params_from_bl2_t *params_from_bl2 = bl31_get_plat_params();
+ uint8_t enable_ccplex_lock_step = params_from_bl2->enable_ccplex_lock_step;
uint8_t stateid_afflvl2 = target_state->pwr_domain_state[PLAT_MAX_PWR_LVL];
+ cpu_context_t *ctx = cm_get_context(NON_SECURE);
+ uint64_t actlr_elx;
/*
* Reset power state info for CPUs when onlining, we set
@@ -446,13 +450,23 @@
mmio_write_32(TEGRA_XUSB_PADCTL_BASE +
XUSB_PADCTL_DEV_AXI_STREAMID_PF_0, TEGRA_SID_XUSB_DEV);
}
+ }
- /*
- * Reset power state info for the last core doing SC7
- * entry and exit, we set deepest power state as CC7
- * and SC7 for SC7 entry which may not be requested by
- * non-secure SW which controls idle states.
- */
+ /*
+ * Enable dual execution optimized translations for all ELx.
+ */
+ if (enable_ccplex_lock_step != 0U) {
+ actlr_elx = read_actlr_el3();
+ actlr_elx |= DENVER_CPU_ENABLE_DUAL_EXEC_EL3;
+ write_actlr_el3(actlr_elx);
+
+ actlr_elx = read_actlr_el2();
+ actlr_elx |= DENVER_CPU_ENABLE_DUAL_EXEC_EL2;
+ write_actlr_el2(actlr_elx);
+
+ actlr_elx = read_actlr_el1();
+ actlr_elx |= DENVER_CPU_ENABLE_DUAL_EXEC_EL1;
+ write_actlr_el1(actlr_elx);
}
return PSCI_E_SUCCESS;