1 /* 2 * Copyright (c) 2015-2016, 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 #define BL32_END (unsigned long)(&__BL32_END__) 39 40 #if USE_COHERENT_MEM 41 /* 42 * The next 2 constants identify the extents of the coherent memory region. 43 * These addresses are used by the MMU setup code and therefore they must be 44 * page-aligned. It is the responsibility of the linker script to ensure that 45 * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to 46 * page-aligned addresses. 47 */ 48 #define BL32_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__) 49 #define BL32_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__) 50 #endif 51 52 53 /* Weak definitions may be overridden in specific ARM standard platform */ 54 #pragma weak tsp_early_platform_setup 55 #pragma weak tsp_platform_setup 56 #pragma weak tsp_plat_arch_setup 57 58 59 /******************************************************************************* 60 * Initialize the UART 61 ******************************************************************************/ 62 void arm_tsp_early_platform_setup(void) 63 { 64 /* 65 * Initialize a different console than already in use to display 66 * messages from TSP 67 */ 68 console_init(PLAT_ARM_TSP_UART_BASE, PLAT_ARM_TSP_UART_CLK_IN_HZ, 69 ARM_CONSOLE_BAUDRATE); 70 } 71 72 void tsp_early_platform_setup(void) 73 { 74 arm_tsp_early_platform_setup(); 75 } 76 77 /******************************************************************************* 78 * Perform platform specific setup placeholder 79 ******************************************************************************/ 80 void tsp_platform_setup(void) 81 { 82 plat_arm_gic_driver_init(); 83 } 84 85 /******************************************************************************* 86 * Perform the very early platform specific architectural setup here. At the 87 * moment this is only intializes the MMU 88 ******************************************************************************/ 89 void tsp_plat_arch_setup(void) 90 { 91 arm_setup_page_tables(BL32_BASE, 92 (BL32_END - BL32_BASE), 93 BL_CODE_BASE, 94 BL_CODE_LIMIT, 95 BL_RO_DATA_BASE, 96 BL_RO_DATA_LIMIT 97 #if USE_COHERENT_MEM 98 , BL32_COHERENT_RAM_BASE, 99 BL32_COHERENT_RAM_LIMIT 100 #endif 101 ); 102 enable_mmu_el1(0); 103 } 104