1 /* 2 * Copyright (c) 2021, Arm Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 9 #include <common/debug.h> 10 11 #include "lib/xlat_mpu/xlat_mpu.h" 12 #include <lib/xlat_tables/xlat_tables_defs.h> 13 #include <lib/xlat_tables/xlat_tables_v2.h> 14 #include "xlat_mpu_private.h" 15 16 #include <fvp_r_arch_helpers.h> 17 #include <platform_def.h> 18 19 #warning "xlat_mpu library is currently experimental and its API may change in future." 20 21 22 /* 23 * MMU configuration register values for the active translation context. Used 24 * from the MMU assembly helpers. 25 */ 26 uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX]; 27 28 /* 29 * Allocate and initialise the default translation context for the BL image 30 * currently executing. 31 */ 32 REGISTER_XLAT_CONTEXT(tf, MAX_MMAP_REGIONS, MAX_XLAT_TABLES, 33 PLAT_VIRT_ADDR_SPACE_SIZE, PLAT_PHY_ADDR_SPACE_SIZE); 34 35 void mmap_add(const mmap_region_t *mm) 36 { 37 mmap_add_ctx(&tf_xlat_ctx, mm); 38 } 39 40 void __init init_xlat_tables(void) 41 { 42 assert(tf_xlat_ctx.xlat_regime == EL_REGIME_INVALID); 43 44 unsigned int current_el = xlat_arch_current_el(); 45 46 if (current_el == 1U) { 47 tf_xlat_ctx.xlat_regime = EL1_EL0_REGIME; 48 } else { 49 assert(current_el == 2U); 50 tf_xlat_ctx.xlat_regime = EL2_REGIME; 51 } 52 /* Note: If EL3 is supported in future v8-R64, add EL3 assignment */ 53 init_xlat_tables_ctx(&tf_xlat_ctx); 54 } 55 56 int xlat_get_mem_attributes(uintptr_t base_va, uint32_t *attr) 57 { 58 return xlat_get_mem_attributes_ctx(&tf_xlat_ctx, base_va, attr); 59 } 60 61 void enable_mpu_el2(unsigned int flags) 62 { 63 /* EL2 is strictly MPU on v8-R64, so no need for setup_mpu_cfg() */ 64 enable_mpu_direct_el2(flags); 65 } 66