1 /* 2 * Copyright (c) 2015-2025, Arm Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 9 #include <platform_def.h> 10 11 #include <bl32/tsp/platform_tsp.h> 12 #include <common/bl_common.h> 13 #include <common/debug.h> 14 #include <drivers/arm/pl011.h> 15 #include <drivers/console.h> 16 #if TRANSFER_LIST && MEASURED_BOOT 17 #include <drivers/measured_boot/event_log/event_log.h> 18 #endif 19 #include <plat/arm/common/plat_arm.h> 20 #include <plat/common/platform.h> 21 22 /* Weak definitions may be overridden in specific ARM standard platform */ 23 #pragma weak tsp_early_platform_setup 24 #pragma weak tsp_platform_setup 25 #pragma weak tsp_plat_arch_setup 26 27 #define MAP_BL_TSP_TOTAL MAP_REGION_FLAT( \ 28 BL32_BASE, \ 29 BL32_END - BL32_BASE, \ 30 MT_MEMORY | MT_RW | MT_SECURE) 31 32 #define MAP_FW_HANDOFF MAP_REGION_FLAT( \ 33 PLAT_ARM_EL3_FW_HANDOFF_BASE, \ 34 PLAT_ARM_FW_HANDOFF_SIZE, \ 35 MT_MEMORY | MT_RO | MT_SECURE) 36 37 struct transfer_list_header *secure_tl __unused; 38 39 /******************************************************************************* 40 * Initialize the UART 41 ******************************************************************************/ 42 static console_t arm_tsp_runtime_console; 43 44 void arm_tsp_early_platform_setup(u_register_t arg0, u_register_t arg1, 45 u_register_t arg2, u_register_t arg3) 46 { 47 #if TRANSFER_LIST 48 secure_tl = (struct transfer_list_header *)arg3; 49 assert(secure_tl != NULL); 50 51 if (transfer_list_check_header(secure_tl) == TL_OPS_NON) { 52 ERROR("Invalid transfer list received"); 53 transfer_list_dump(secure_tl); 54 panic(); 55 } 56 #endif 57 58 /* 59 * Initialize a different console than already in use to display 60 * messages from TSP 61 */ 62 int rc = console_pl011_register(PLAT_ARM_TSP_UART_BASE, 63 PLAT_ARM_TSP_UART_CLK_IN_HZ, 64 ARM_CONSOLE_BAUDRATE, 65 &arm_tsp_runtime_console); 66 if (rc == 0) { 67 panic(); 68 } 69 70 console_set_scope(&arm_tsp_runtime_console, 71 CONSOLE_FLAG_BOOT | CONSOLE_FLAG_RUNTIME); 72 } 73 74 void tsp_early_platform_setup(u_register_t arg0, u_register_t arg1, 75 u_register_t arg2, u_register_t arg3) 76 { 77 arm_tsp_early_platform_setup(arg0, arg1, arg2, arg3); 78 } 79 80 /******************************************************************************* 81 * Perform platform specific setup placeholder 82 ******************************************************************************/ 83 void tsp_platform_setup(void) 84 { 85 struct transfer_list_entry *te __unused; 86 87 /* 88 * On GICv2 the driver must be initialised before calling the plat_ic_* 89 * functions as they need the data structures. Higher versions don't. 90 */ 91 #if USE_GIC_DRIVER == 2 92 gic_init(plat_my_core_pos()); 93 #endif 94 95 #if TRANSFER_LIST && MEASURED_BOOT 96 te = transfer_list_find(secure_tl, TL_TAG_TPM_EVLOG); 97 assert(te != NULL); 98 99 /* 100 * Note the actual log is offset 4-bytes from the start of entry data, the 101 * first bytes are reserved. 102 */ 103 event_log_dump(transfer_list_entry_data(te) + U(4), te->data_size - U(4)); 104 #endif 105 } 106 107 /******************************************************************************* 108 * Perform the very early platform specific architectural setup here. At the 109 * moment this is only initializes the MMU 110 ******************************************************************************/ 111 void tsp_plat_arch_setup(void) 112 { 113 #if USE_COHERENT_MEM 114 /* Ensure ARM platforms don't use coherent memory in TSP */ 115 assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U); 116 #endif 117 118 const mmap_region_t bl_regions[] = { 119 MAP_BL_TSP_TOTAL, 120 ARM_MAP_BL_RO, 121 #if TRANSFER_LIST 122 MAP_FW_HANDOFF, 123 #endif 124 {0} 125 }; 126 127 setup_page_tables(bl_regions, plat_arm_get_mmap()); 128 enable_mmu_el1(0); 129 130 #if PLAT_RO_XLAT_TABLES 131 arm_xlat_make_tables_readonly(); 132 #endif 133 } 134