1 /* 2 * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <string.h> 9 10 #include <platform_def.h> 11 12 #include <arch_helpers.h> 13 #include <common/bl_common.h> 14 #include <drivers/generic_delay_timer.h> 15 #include <plat/common/platform.h> 16 17 #include <plat_arm.h> 18 19 /* Weak definitions may be overridden in specific ARM standard platform */ 20 #pragma weak bl2u_platform_setup 21 #pragma weak bl2u_early_platform_setup 22 #pragma weak bl2u_plat_arch_setup 23 24 #define MAP_BL2U_TOTAL MAP_REGION_FLAT( \ 25 BL2U_BASE, \ 26 BL2U_LIMIT - BL2U_BASE, \ 27 MT_MEMORY | MT_RW | MT_SECURE) 28 29 /* 30 * Perform ARM standard platform setup for BL2U 31 */ 32 void arm_bl2u_platform_setup(void) 33 { 34 /* Initialize the secure environment */ 35 plat_arm_security_setup(); 36 } 37 38 void bl2u_platform_setup(void) 39 { 40 arm_bl2u_platform_setup(); 41 } 42 43 void arm_bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info) 44 { 45 /* Initialize the console to provide early debug support */ 46 arm_console_boot_init(); 47 48 generic_delay_timer_init(); 49 } 50 51 /******************************************************************************* 52 * BL1 can pass platform dependent information to BL2U in x1. 53 * In case of ARM CSS platforms x1 contains SCP_BL2U image info. 54 * In case of ARM FVP platforms x1 is not used. 55 * In both cases, x0 contains the extents of the memory available to BL2U 56 ******************************************************************************/ 57 void bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info) 58 { 59 arm_bl2u_early_platform_setup(mem_layout, plat_info); 60 } 61 62 /******************************************************************************* 63 * Perform the very early platform specific architectural setup here. At the 64 * moment this is only initializes the mmu in a quick and dirty way. 65 * The memory that is used by BL2U is only mapped. 66 ******************************************************************************/ 67 void arm_bl2u_plat_arch_setup(void) 68 { 69 70 #if USE_COHERENT_MEM 71 /* Ensure ARM platforms dont use coherent memory in BL2U */ 72 assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U); 73 #endif 74 75 const mmap_region_t bl_regions[] = { 76 MAP_BL2U_TOTAL, 77 ARM_MAP_BL_RO, 78 #if USE_ROMLIB 79 ARM_MAP_ROMLIB_CODE, 80 ARM_MAP_ROMLIB_DATA, 81 #endif 82 {0} 83 }; 84 85 setup_page_tables(bl_regions, plat_arm_get_mmap()); 86 87 #ifdef AARCH32 88 enable_mmu_svc_mon(0); 89 #else 90 enable_mmu_el1(0); 91 #endif 92 arm_setup_romlib(); 93 } 94 95 void bl2u_plat_arch_setup(void) 96 { 97 arm_bl2u_plat_arch_setup(); 98 } 99