feat(mt8188): add emi mpu protection for APU secure memory
Add emi mpu protection of APU secure memory.
Change-Id: I949cfce97565d8a313caae4ea41af60a171042a6
diff --git a/plat/mediatek/drivers/apusys/apusys.c b/plat/mediatek/drivers/apusys/apusys.c
index aa2c900..58853ca 100644
--- a/plat/mediatek/drivers/apusys/apusys.c
+++ b/plat/mediatek/drivers/apusys/apusys.c
@@ -53,6 +53,9 @@
case MTK_APUSYS_KERNEL_OP_DEVAPC_INIT_RCX:
ret = apusys_devapc_rcx_init();
break;
+ case MTK_APUSYS_KERNEL_OP_APUSYS_RV_SETUP_SEC_MEM:
+ ret = apusys_kernel_apusys_rv_setup_sec_mem();
+ break;
default:
ERROR(MODULE_TAG "%s unknown request_ops = %x\n", MODULE_TAG, request_ops);
break;
diff --git a/plat/mediatek/drivers/apusys/apusys.h b/plat/mediatek/drivers/apusys/apusys.h
index 2a9bffb..acc658d 100644
--- a/plat/mediatek/drivers/apusys/apusys.h
+++ b/plat/mediatek/drivers/apusys/apusys.h
@@ -18,6 +18,7 @@
MTK_APUSYS_KERNEL_OP_APUSYS_RV_START_MP, /* 5 */
MTK_APUSYS_KERNEL_OP_APUSYS_RV_STOP_MP, /* 6 */
MTK_APUSYS_KERNEL_OP_DEVAPC_INIT_RCX, /* 7 */
+ MTK_APUSYS_KERNEL_OP_APUSYS_RV_SETUP_SEC_MEM, /* 8 */
MTK_APUSYS_KERNEL_OP_NUM,
};
diff --git a/plat/mediatek/drivers/apusys/apusys_rv/2.0/apusys_rv.c b/plat/mediatek/drivers/apusys/apusys_rv/2.0/apusys_rv.c
index fef8661..f421486 100644
--- a/plat/mediatek/drivers/apusys/apusys_rv/2.0/apusys_rv.c
+++ b/plat/mediatek/drivers/apusys/apusys_rv/2.0/apusys_rv.c
@@ -14,6 +14,7 @@
#include "apusys.h"
#include "apusys_rv.h"
#include "apusys_rv_mbox_mpu.h"
+#include "emi_mpu.h"
static spinlock_t apusys_rv_lock;
@@ -181,3 +182,27 @@
return 0;
}
+
+int apusys_kernel_apusys_rv_setup_sec_mem(void)
+{
+ static bool apusys_rv_setup_sec_mem_called;
+ int ret;
+
+ spin_lock(&apusys_rv_lock);
+
+ if (apusys_rv_setup_sec_mem_called) {
+ WARN(MODULE_TAG "%s: already initialized\n", __func__);
+ spin_unlock(&apusys_rv_lock);
+ return -1;
+ }
+
+ apusys_rv_setup_sec_mem_called = true;
+
+ ret = set_apu_emi_mpu_region();
+ if (ret != 0) {
+ ERROR(MODULE_TAG "%s: set emimpu protection failed\n", __func__);
+ }
+
+ spin_unlock(&apusys_rv_lock);
+ return ret;
+}
diff --git a/plat/mediatek/drivers/apusys/apusys_rv/2.0/apusys_rv.h b/plat/mediatek/drivers/apusys/apusys_rv/2.0/apusys_rv.h
index 1c53aca..76cd3a8 100644
--- a/plat/mediatek/drivers/apusys/apusys_rv/2.0/apusys_rv.h
+++ b/plat/mediatek/drivers/apusys/apusys_rv/2.0/apusys_rv.h
@@ -106,5 +106,6 @@
int apusys_kernel_apusys_rv_setup_boot(void);
int apusys_kernel_apusys_rv_start_mp(void);
int apusys_kernel_apusys_rv_stop_mp(void);
+int apusys_kernel_apusys_rv_setup_sec_mem(void);
#endif /* APUSYS_RV_H */