1 /* 2 * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <arm_def.h> 32 #include <bl_common.h> 33 #include <console.h> 34 #include <platform_def.h> 35 #include <platform_tsp.h> 36 #include <plat_arm.h> 37 38 39 /* 40 * The next 3 constants identify the extents of the code & RO data region and 41 * the limit of the BL32 image. These addresses are used by the MMU setup code 42 * and therefore they must be page-aligned. It is the responsibility of the 43 * linker script to ensure that __RO_START__, __RO_END__ & & __BL32_END__ 44 * linker symbols refer to page-aligned addresses. 45 */ 46 #define BL32_RO_BASE (unsigned long)(&__RO_START__) 47 #define BL32_RO_LIMIT (unsigned long)(&__RO_END__) 48 #define BL32_END (unsigned long)(&__BL32_END__) 49 50 #if USE_COHERENT_MEM 51 /* 52 * The next 2 constants identify the extents of the coherent memory region. 53 * These addresses are used by the MMU setup code and therefore they must be 54 * page-aligned. It is the responsibility of the linker script to ensure that 55 * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to 56 * page-aligned addresses. 57 */ 58 #define BL32_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__) 59 #define BL32_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__) 60 #endif 61 62 63 /* Weak definitions may be overridden in specific ARM standard platform */ 64 #pragma weak tsp_early_platform_setup 65 #pragma weak tsp_platform_setup 66 #pragma weak tsp_plat_arch_setup 67 68 69 /******************************************************************************* 70 * Initialize the UART 71 ******************************************************************************/ 72 void arm_tsp_early_platform_setup(void) 73 { 74 /* 75 * Initialize a different console than already in use to display 76 * messages from TSP 77 */ 78 console_init(PLAT_ARM_TSP_UART_BASE, PLAT_ARM_TSP_UART_CLK_IN_HZ, 79 ARM_CONSOLE_BAUDRATE); 80 } 81 82 void tsp_early_platform_setup(void) 83 { 84 arm_tsp_early_platform_setup(); 85 } 86 87 /******************************************************************************* 88 * Perform platform specific setup placeholder 89 ******************************************************************************/ 90 void tsp_platform_setup(void) 91 { 92 plat_arm_gic_driver_init(); 93 } 94 95 /******************************************************************************* 96 * Perform the very early platform specific architectural setup here. At the 97 * moment this is only intializes the MMU 98 ******************************************************************************/ 99 void tsp_plat_arch_setup(void) 100 { 101 arm_configure_mmu_el1(BL32_RO_BASE, 102 (BL32_END - BL32_RO_BASE), 103 BL32_RO_BASE, 104 BL32_RO_LIMIT 105 #if USE_COHERENT_MEM 106 , BL32_COHERENT_RAM_BASE, 107 BL32_COHERENT_RAM_LIMIT 108 #endif 109 ); 110 } 111