1 /* 2 * Copyright (c) 2015-2019, 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 #include <plat/arm/common/plat_arm.h> 17 18 #define BL32_END (unsigned long)(&__BL32_END__) 19 20 /* Weak definitions may be overridden in specific ARM standard platform */ 21 #pragma weak tsp_early_platform_setup 22 #pragma weak tsp_platform_setup 23 #pragma weak tsp_plat_arch_setup 24 25 #define MAP_BL_TSP_TOTAL MAP_REGION_FLAT( \ 26 BL32_BASE, \ 27 BL32_END - BL32_BASE, \ 28 MT_MEMORY | MT_RW | MT_SECURE) 29 30 /******************************************************************************* 31 * Initialize the UART 32 ******************************************************************************/ 33 #if MULTI_CONSOLE_API 34 static console_pl011_t arm_tsp_runtime_console; 35 #endif 36 37 void arm_tsp_early_platform_setup(void) 38 { 39 #if MULTI_CONSOLE_API 40 /* 41 * Initialize a different console than already in use to display 42 * messages from TSP 43 */ 44 int rc = console_pl011_register(PLAT_ARM_TSP_UART_BASE, 45 PLAT_ARM_TSP_UART_CLK_IN_HZ, 46 ARM_CONSOLE_BAUDRATE, 47 &arm_tsp_runtime_console); 48 if (rc == 0) 49 panic(); 50 51 console_set_scope(&arm_tsp_runtime_console.console, 52 CONSOLE_FLAG_BOOT | CONSOLE_FLAG_RUNTIME); 53 #else 54 console_init(PLAT_ARM_TSP_UART_BASE, PLAT_ARM_TSP_UART_CLK_IN_HZ, 55 ARM_CONSOLE_BAUDRATE); 56 #endif /* MULTI_CONSOLE_API */ 57 } 58 59 void tsp_early_platform_setup(void) 60 { 61 arm_tsp_early_platform_setup(); 62 } 63 64 /******************************************************************************* 65 * Perform platform specific setup placeholder 66 ******************************************************************************/ 67 void tsp_platform_setup(void) 68 { 69 plat_arm_gic_driver_init(); 70 } 71 72 /******************************************************************************* 73 * Perform the very early platform specific architectural setup here. At the 74 * moment this is only intializes the MMU 75 ******************************************************************************/ 76 void tsp_plat_arch_setup(void) 77 { 78 #if USE_COHERENT_MEM 79 /* Ensure ARM platforms don't use coherent memory in TSP */ 80 assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U); 81 #endif 82 83 const mmap_region_t bl_regions[] = { 84 MAP_BL_TSP_TOTAL, 85 ARM_MAP_BL_RO, 86 {0} 87 }; 88 89 setup_page_tables(bl_regions, plat_arm_get_mmap()); 90 enable_mmu_el1(0); 91 } 92