commit 2e6e166afcf09adeab39777ef75000573084195b
author Yidi Lin <yidilin@chromium.org> Thu Jul 11 14:55:34 2024 +0800
committer Yidi Lin <yidilin@chromium.org> Fri Jul 19 12:02:05 2024 +0800
tree 7a584c94eb22eb6b3469948f4a7f10c2899abda4
parent e200457d6cc21c81805bbdafeae650ed192640ae

fix(mt8188): remove BL32 region protection if SPD sets to none

When SPD is set to none, it means we don't run any secure OS on the
system. We should make this memory region available to kernel.

Change-Id: Ia83ff4a7d25de38a5d845b7ee1367bafed43bbdd
Signed-off-by: Yidi Lin <yidilin@chromium.org>

plat/mediatek/drivers/emi_mpu/mt8188/emi_mpu.c

diff --git a/plat/mediatek/drivers/emi_mpu/mt8188/emi_mpu.c b/plat/mediatek/drivers/emi_mpu/mt8188/emi_mpu.c
index f7ed5e6..efb70b7 100644
--- a/plat/mediatek/drivers/emi_mpu/mt8188/emi_mpu.c
+++ b/plat/mediatek/drivers/emi_mpu/mt8188/emi_mpu.c
@@ -25,6 +25,7 @@
 			      FORBIDDEN, FORBIDDEN, FORBIDDEN, SEC_RW);
 	emi_mpu_set_protection(&region_info);
 
+#ifndef SPD_NONE
 	/* BL32 address */
 	region_info.start = BL32_REGION_BASE;
 	region_info.end = BL32_REGION_BASE + BL32_REGION_SIZE - 1;
@@ -35,6 +36,7 @@
 			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
 			      FORBIDDEN, FORBIDDEN, SEC_RW, SEC_RW);
 	emi_mpu_set_protection(&region_info);
+#endif
 
 	/* SCP core0 DRAM */
 	region_info.start = SCP_CORE0_REGION_BASE;