Tegra194: report failure to enable dual execution
During boot the platform enables dual execution for Xavier CPUs.
This patch reads back the ACTLR_ELx register to verify that the bit
is actually set. It asserts if the bit is not set.
Change-Id: I5ba9491ced86285d307b95efa647a427ff77c79e
Signed-off-by: Kalyani Chidambaram Vaidyanathan <kalyanic@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t194/plat_setup.c b/plat/nvidia/tegra/soc/t194/plat_setup.c
index cb3d6b4..bb1595a 100644
--- a/plat/nvidia/tegra/soc/t194/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t194/plat_setup.c
@@ -314,14 +314,20 @@
actlr_elx = read_actlr_el3();
actlr_elx |= DENVER_CPU_ENABLE_DUAL_EXEC_EL3;
write_actlr_el3(actlr_elx);
+ /* check if the bit is actually set */
+ assert((read_actlr_el3() & DENVER_CPU_ENABLE_DUAL_EXEC_EL3) != 0ULL);
actlr_elx = read_actlr_el2();
actlr_elx |= DENVER_CPU_ENABLE_DUAL_EXEC_EL2;
write_actlr_el2(actlr_elx);
+ /* check if the bit is actually set */
+ assert((read_actlr_el2() & DENVER_CPU_ENABLE_DUAL_EXEC_EL2) != 0ULL);
actlr_elx = read_actlr_el1();
actlr_elx |= DENVER_CPU_ENABLE_DUAL_EXEC_EL1;
write_actlr_el1(actlr_elx);
+ /* check if the bit is actually set */
+ assert((read_actlr_el1() & DENVER_CPU_ENABLE_DUAL_EXEC_EL1) != 0ULL);
}
}