commit 67611c87f4e1c7a6b29a596442983e1e6ab9cd4e
author Dawei Chien <dawei.chien@mediatek.corp-partner.google.com> Tue Aug 01 18:52:52 2023 +0800
committer developer <developer@mediatek.com> Mon Aug 14 10:49:41 2023 +0800
tree 3320a07891b89f653b4bfdd9feb345eca42ff995
parent 5442f4f87d81808830406b14d40e08d5c86a2722

feat(mt8188): add support for SMC from OP-TEE

- Add MTK_SIP_SMC_FROM_S_EL1_TABLE to handle the SMC call from OP-TEE.
- Register optee for EMI MPU.

Change-Id: Ie94542f0e3966c4c25f2b7233b9355d41f8f36a5

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 59ab315..ae1b7ef 100644
--- a/plat/mediatek/drivers/emi_mpu/mt8188/emi_mpu.c
+++ b/plat/mediatek/drivers/emi_mpu/mt8188/emi_mpu.c
@@ -6,6 +6,9 @@
 
 #include <common/debug.h>
 #include <emi_mpu.h>
+#include <mtk_sip_svc.h>
+
+#define MPU_PHYSICAL_ADDR_SHIFT_BITS	(16)
 
 void set_emi_mpu_regions(void)
 {
@@ -29,3 +32,43 @@
 
 	return emi_mpu_set_protection(&region_info);
 }
+
+static inline uint64_t get_decoded_phys_addr(uint64_t addr)
+{
+	return (addr << MPU_PHYSICAL_ADDR_SHIFT_BITS);
+}
+
+static inline uint32_t get_decoded_zone_id(uint32_t info)
+{
+	return ((info & 0xFFFF0000) >> MPU_PHYSICAL_ADDR_SHIFT_BITS);
+}
+
+int emi_mpu_optee_handler(uint64_t encoded_addr, uint64_t zone_size,
+						  uint64_t zone_info)
+{
+	uint64_t phys_addr = get_decoded_phys_addr(encoded_addr);
+	struct emi_region_info_t region_info;
+	enum MPU_REQ_ORIGIN_ZONE_ID zone_id = get_decoded_zone_id(zone_info);
+
+	INFO("encoded_addr = 0x%lx, zone_size = 0x%lx, zone_info = 0x%lx\n",
+	     encoded_addr, zone_size, zone_info);
+
+	if (zone_id != MPU_REQ_ORIGIN_TEE_ZONE_SVP) {
+		ERROR("Invalid param %s, %d\n", __func__, __LINE__);
+		return MTK_SIP_E_INVALID_PARAM;
+	}
+
+	/* SVP DRAM */
+	region_info.start = phys_addr;
+	region_info.end = phys_addr + zone_size;
+	region_info.region = 4;
+	SET_ACCESS_PERMISSION(region_info.apc, 1,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, FORBIDDEN,
+			      FORBIDDEN, FORBIDDEN, FORBIDDEN, SEC_RW);
+
+	emi_mpu_set_protection(&region_info);
+
+	return 0;
+}
\ No newline at end of file