chore: fvp_r: Initial No-EL3 and MPU Implementation
For v8-R64, especially R82, creating code to run BL1 at EL2, using MPU.
Signed-off-by: Gary Morrison <gary.morrison@arm.com>
Change-Id: I439ac3915b982ad1e61d24365bdd1584b3070425
diff --git a/lib/xlat_mpu/xlat_mpu_private.h b/lib/xlat_mpu/xlat_mpu_private.h
new file mode 100644
index 0000000..e0e479d
--- /dev/null
+++ b/lib/xlat_mpu/xlat_mpu_private.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef XLAT_MPU_PRIVATE_H
+#define XLAT_MPU_PRIVATE_H
+
+#include <stdbool.h>
+
+#include <lib/xlat_tables/xlat_tables_defs.h>
+#include <lib/xlat_tables/xlat_tables_v2.h>
+
+#include <platform_def.h>
+
+#if PLAT_XLAT_TABLES_DYNAMIC
+/*
+ * Private shifts and masks to access fields of an mmap attribute
+ */
+/* Dynamic or static */
+#define MT_DYN_SHIFT U(31)
+
+/*
+ * Memory mapping private attributes
+ *
+ * Private attributes not exposed in the public header.
+ */
+
+#endif /* PLAT_XLAT_TABLES_DYNAMIC */
+
+/* Calculate region-attributes byte for PRBAR part of MPU-region descriptor: */
+uint64_t prbar_attr_value(uint32_t attr);
+/* Calculate region-attributes byte for PRLAR part of MPU-region descriptor: */
+uint64_t prlar_attr_value(uint32_t attr);
+/* Calculates the attr value for a given PRBAR and PRLAR entry value: */
+uint32_t region_attr(uint64_t prbar_attr, uint64_t prlar_attr);
+
+#define PRBAR_PRLAR_ADDR_MASK UL(0xffffffffffc0)
+ /* mask for PRBAR & PRLAR MPU-region field */
+/* MPU region attribute bit fields: */
+#define PRBAR_SH_SHIFT UL(4)
+#define PRBAR_SH_MASK UL(0x3)
+#define PRBAR_AP_SHIFT UL(2)
+#define PRBAR_AP_MASK UL(0x3)
+#define PRBAR_XN_SHIFT UL(1)
+#define PRBAR_XN_MASK UL(0x3)
+#define PRLAR_NS_SHIFT UL(4)
+#define PRLAR_NS_MASK UL(0x3)
+#define PRBAR_ATTR_SHIFT UL(0)
+#define PRBAR_ATTR_MASK UL(0x3f)
+#define PRLAR_ATTR_SHIFT UL(1)
+#define PRLAR_ATTR_MASK UL(0x7)
+#define PRLAR_EN_SHIFT UL(0)
+#define PRLAR_EN_MASK UL(0x1)
+/* Aspects of the source attributes not defined elsewhere: */
+#define MT_PERM_MASK UL(0x1)
+#define MT_SEC_MASK UL(0x1)
+#define MT_EXECUTE_MASK UL(0x3)
+#define MT_TYPE_SHIFT UL(0)
+
+extern uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX];
+
+/*
+ * Return the execute-never mask that will prevent instruction fetch at the
+ * given translation regime.
+ */
+uint64_t xlat_arch_regime_get_xn_desc(int xlat_regime);
+
+/* Print VA, PA, size and attributes of all regions in the mmap array. */
+void xlat_mmap_print(const mmap_region_t *mmap);
+
+/*
+ * Print the current state of the translation tables by reading them from
+ * memory.
+ */
+void xlat_tables_print(xlat_ctx_t *ctx);
+
+/*
+ * Returns a block/page table descriptor for the given level and attributes.
+ */
+uint64_t xlat_desc(const xlat_ctx_t *ctx, uint32_t attr,
+ unsigned long long addr_pa, unsigned int level);
+
+/*
+ * Architecture-specific initialization code.
+ */
+
+/* Returns the current Exception Level. The returned EL must be 1 or higher. */
+unsigned int xlat_arch_current_el(void);
+
+/*
+ * Returns true if the MMU of the translation regime managed by the given
+ * xlat_ctx_t is enabled, false otherwise.
+ */
+bool is_mpu_enabled_ctx(const xlat_ctx_t *ctx);
+
+/*
+ * Returns minimum virtual address space size supported by the architecture
+ */
+uintptr_t xlat_get_min_virt_addr_space_size(void);
+
+#endif /* XLAT_MPU_PRIVATE_H */