plat/arm/common/tsp/arm_tsp_setup.c

   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 <arm_def.h>
   8 #include <assert.h>
   9 #include <bl_common.h>
  10 #include <console.h>
  11 #include <debug.h>
  12 #include <pl011.h>
  13 #include <plat_arm.h>
  14 #include <platform_def.h>
  15 #include <platform_tsp.h>
  16
  17 #define BL32_END (unsigned long)(&__BL32_END__)
  18
  19 /* Weak definitions may be overridden in specific ARM standard platform */
  20 #pragma weak tsp_early_platform_setup
  21 #pragma weak tsp_platform_setup
  22 #pragma weak tsp_plat_arch_setup
  23
  24 #define MAP_BL_TSP_TOTAL        MAP_REGION_FLAT(                        \
  25                                         BL32_BASE,                      \
  26                                         BL32_END - BL32_BASE,           \
  27                                         MT_MEMORY | MT_RW | MT_SECURE)
  28
  29 /*******************************************************************************
  30  * Initialize the UART
  31  ******************************************************************************/
  32 #if MULTI_CONSOLE_API
  33 static console_pl011_t arm_tsp_runtime_console;
  34 #endif
  35
  36 void arm_tsp_early_platform_setup(void)
  37 {
  38 #if MULTI_CONSOLE_API
  39         /*
  40          * Initialize a different console than already in use to display
  41          * messages from TSP
  42          */
  43         int rc = console_pl011_register(PLAT_ARM_TSP_UART_BASE,
  44                                         PLAT_ARM_TSP_UART_CLK_IN_HZ,
  45                                         ARM_CONSOLE_BAUDRATE,
  46                                         &arm_tsp_runtime_console);
  47         if (rc == 0)
  48                 panic();
  49
  50         console_set_scope(&arm_tsp_runtime_console.console,
  51                           CONSOLE_FLAG_BOOT | CONSOLE_FLAG_RUNTIME);
  52 #else
  53         console_init(PLAT_ARM_TSP_UART_BASE, PLAT_ARM_TSP_UART_CLK_IN_HZ,
  54                         ARM_CONSOLE_BAUDRATE);
  55 #endif /* MULTI_CONSOLE_API */
  56 }
  57
  58 void tsp_early_platform_setup(void)
  59 {
  60         arm_tsp_early_platform_setup();
  61 }
  62
  63 /*******************************************************************************
  64  * Perform platform specific setup placeholder
  65  ******************************************************************************/
  66 void tsp_platform_setup(void)
  67 {
  68         plat_arm_gic_driver_init();
  69 }
  70
  71 /*******************************************************************************
  72  * Perform the very early platform specific architectural setup here. At the
  73  * moment this is only intializes the MMU
  74  ******************************************************************************/
  75 void tsp_plat_arch_setup(void)
  76 {
  77 #if USE_COHERENT_MEM
  78         /* Ensure ARM platforms dont use coherent memory in TSP */
  79         assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U);
  80 #endif
  81
  82         const mmap_region_t bl_regions[] = {
  83                 MAP_BL_TSP_TOTAL,
  84                 ARM_MAP_BL_RO,
  85                 {0}
  86         };
  87
  88         setup_page_tables(bl_regions, plat_arm_get_mmap());
  89         enable_mmu_el1(0);
  90 }