feat(mt8188): add EMI MPU basic drivers
EMI MPU stands for external memory interface memory protect unit.
MT8188 supports 32 regions and 16 domains.
Signed-off-by: Dawei Chien <dawei.chien@mediatek.com>
Change-Id: I9bbeb355665401cc71dda6db22157d9d751570d1
diff --git a/plat/mediatek/drivers/emi_mpu/emi_mpu.h b/plat/mediatek/drivers/emi_mpu/emi_mpu.h
new file mode 100644
index 0000000..66a369e
--- /dev/null
+++ b/plat/mediatek/drivers/emi_mpu/emi_mpu.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef EMI_MPU_H
+#define EMI_MPU_H
+
+#include <emi_mpu_priv.h>
+#include <platform_def.h>
+
+#define NO_PROTECTION (0)
+#define SEC_RW (1)
+#define SEC_RW_NSEC_R (2)
+#define SEC_RW_NSEC_W (3)
+#define SEC_R_NSEC_R (4)
+#define FORBIDDEN (5)
+#define SEC_R_NSEC_RW (6)
+
+#define LOCK (1)
+#define UNLOCK (0)
+
+#if (EMI_MPU_DGROUP_NUM == 1)
+#define SET_ACCESS_PERMISSION(apc_ary, lock, d7, d6, d5, d4, d3, d2, d1, d0) \
+do { \
+ apc_ary[1] = 0; \
+ apc_ary[0] = \
+ (((unsigned int) d7) << 21) | (((unsigned int) d6) << 18) | \
+ (((unsigned int) d5) << 15) | (((unsigned int) d4) << 12) | \
+ (((unsigned int) d3) << 9) | (((unsigned int) d2) << 6) | \
+ (((unsigned int) d1) << 3) | ((unsigned int) d0) | \
+ ((unsigned int) lock << 31); \
+} while (0)
+#elif (EMI_MPU_DGROUP_NUM == 2)
+#define SET_ACCESS_PERMISSION(apc_ary, lock, d15, d14, d13, d12, d11, d10, \
+ d9, d8, d7, d6, d5, d4, d3, d2, d1, d0) \
+do { \
+ apc_ary[1] = \
+ (((unsigned int) d15) << 21) | (((unsigned int) d14) << 18) | \
+ (((unsigned int) d13) << 15) | (((unsigned int) d12) << 12) | \
+ (((unsigned int) d11) << 9) | (((unsigned int) d10) << 6) | \
+ (((unsigned int) d9) << 3) | ((unsigned int) d8); \
+ apc_ary[0] = \
+ (((unsigned int) d7) << 21) | (((unsigned int) d6) << 18) | \
+ (((unsigned int) d5) << 15) | (((unsigned int) d4) << 12) | \
+ (((unsigned int) d3) << 9) | (((unsigned int) d2) << 6) | \
+ (((unsigned int) d1) << 3) | ((unsigned int) d0) | \
+ ((unsigned int) lock << 31); \
+} while (0)
+#endif
+
+struct emi_region_info_t {
+ unsigned long long start;
+ unsigned long long end;
+ unsigned int region;
+ unsigned int apc[EMI_MPU_DGROUP_NUM];
+};
+
+int emi_mpu_init(void);
+int emi_mpu_set_protection(struct emi_region_info_t *region_info);
+void set_emi_mpu_regions(void);
+
+#endif