commit a564bdc551e1b542e3917d30f147c31c7cf56e2f
author Xi Chen <xixi.chen@mediatek.com> Wed Jan 06 16:05:01 2021 +0800
committer Yidi Lin <yidi.lin@mediatek.com> Wed Mar 03 19:07:45 2021 +0800
tree 4301690964f0d9b01e67a8f853eb69e488ec3a74
parent f3febcca5a6f027c6115454b779fce8c71917ac0

mediatek: mt8192: Add MPU Support for SCP/PCIe

1 Only enable domain D0 and D1:PCIe access 0xC0000000~0xC4000000;
2 Only enable domain D0 and D3(SCP) access 0x50000000~0x51400000;

Signed-off-by: Xi Chen <xixi.chen@mediatek.com>
Change-Id: Ic4f9e6d85bfd1cebdb24ffc1d14309c89c103b2a

plat/mediatek/mt8192/drivers/emi_mpu/emi_mpu.c

diff --git a/plat/mediatek/mt8192/drivers/emi_mpu/emi_mpu.c b/plat/mediatek/mt8192/drivers/emi_mpu/emi_mpu.c
index d5d7e2e..d9541bd 100644
--- a/plat/mediatek/mt8192/drivers/emi_mpu/emi_mpu.c
+++ b/plat/mediatek/mt8192/drivers/emi_mpu/emi_mpu.c
@@ -91,30 +91,41 @@
 
 void emi_mpu_init(void)
 {
-	/* Set permission */
 	struct emi_region_info_t region_info;
 
-	/* PCE-e protect address(TODO) */
-	region_info.start = 0x80000000ULL;
-	region_info.end = 0x83FF0000ULL;
+	/* reserve region 0 for future use */
+
+	/* PCI-e protect address(64MB) */
+	region_info.start = 0xC0000000ULL;
+	region_info.end = 0xC3FF0000ULL;
 	region_info.region = 1;
 	SET_ACCESS_PERMISSION(region_info.apc, 1,
 			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
 			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
 			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
-			      FORBIDDEN, FORBIDDEN, NO_PROT,
-			      NO_PROT /*FORBIDDEN*/);
+			      FORBIDDEN, FORBIDDEN, NO_PROT, NO_PROT);
+	emi_mpu_set_protection(&region_info);
+
+	/* SCP protect address */
+	region_info.start = 0x50000000ULL;
+	region_info.end = 0x513F0000ULL;
+	region_info.region = 2;
+	SET_ACCESS_PERMISSION(region_info.apc, 1,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
+			      NO_PROT, FORBIDDEN, FORBIDDEN, NO_PROT);
 	emi_mpu_set_protection(&region_info);
 
 	/* Forbidden All */
 	region_info.start = 0x40000000ULL;	/* dram base addr */
 	region_info.end = 0x1FFFF0000ULL;
-	region_info.region = 2;
+	region_info.region = 3;
 	SET_ACCESS_PERMISSION(region_info.apc, 1,
-			      NO_PROT, NO_PROT, NO_PROT, NO_PROT,
-			      NO_PROT, NO_PROT, NO_PROT, NO_PROT,
-			      NO_PROT, NO_PROT, NO_PROT, NO_PROT,
-			      NO_PROT, FORBIDDEN, NO_PROT, NO_PROT);
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, NO_PROT);
 	emi_mpu_set_protection(&region_info);
 
 	dump_emi_mpu_regions();