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 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 17 #include <arm_def.h> 18 #include <plat_arm.h> 19 20 #define BL32_END (unsigned long)(&__BL32_END__) 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 /******************************************************************************* 33 * Initialize the UART 34 ******************************************************************************/ 35 #if MULTI_CONSOLE_API 36 static console_pl011_t arm_tsp_runtime_console; 37 #endif 38 39 void arm_tsp_early_platform_setup(void) 40 { 41 #if MULTI_CONSOLE_API 42 /* 43 * Initialize a different console than already in use to display 44 * messages from TSP 45 */ 46 int rc = console_pl011_register(PLAT_ARM_TSP_UART_BASE, 47 PLAT_ARM_TSP_UART_CLK_IN_HZ, 48 ARM_CONSOLE_BAUDRATE, 49 &arm_tsp_runtime_console); 50 if (rc == 0) 51 panic(); 52 53 console_set_scope(&arm_tsp_runtime_console.console, 54 CONSOLE_FLAG_BOOT | CONSOLE_FLAG_RUNTIME); 55 #else 56 console_init(PLAT_ARM_TSP_UART_BASE, PLAT_ARM_TSP_UART_CLK_IN_HZ, 57 ARM_CONSOLE_BAUDRATE); 58 #endif /* MULTI_CONSOLE_API */ 59 } 60 61 void tsp_early_platform_setup(void) 62 { 63 arm_tsp_early_platform_setup(); 64 } 65 66 /******************************************************************************* 67 * Perform platform specific setup placeholder 68 ******************************************************************************/ 69 void tsp_platform_setup(void) 70 { 71 plat_arm_gic_driver_init(); 72 } 73 74 /******************************************************************************* 75 * Perform the very early platform specific architectural setup here. At the 76 * moment this is only intializes the MMU 77 ******************************************************************************/ 78 void tsp_plat_arch_setup(void) 79 { 80 #if USE_COHERENT_MEM 81 /* Ensure ARM platforms dont use coherent memory in TSP */ 82 assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U); 83 #endif 84 85 const mmap_region_t bl_regions[] = { 86 MAP_BL_TSP_TOTAL, 87 ARM_MAP_BL_RO, 88 {0} 89 }; 90 91 setup_page_tables(bl_regions, plat_arm_get_mmap()); 92 enable_mmu_el1(0); 93 } 94