1 /* 2 * Copyright (c) 2014, 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 <bl_common.h> 32 #include <console.h> 33 #include <platform_tsp.h> 34 #include "../juno_def.h" 35 #include "../juno_private.h" 36 37 /******************************************************************************* 38 * Declarations of linker defined symbols which will help us find the layout 39 * of trusted SRAM 40 ******************************************************************************/ 41 extern unsigned long __RO_START__; 42 extern unsigned long __RO_END__; 43 extern unsigned long __BL32_END__; 44 45 #if USE_COHERENT_MEM 46 extern unsigned long __COHERENT_RAM_START__; 47 extern unsigned long __COHERENT_RAM_END__; 48 #endif 49 50 /* 51 * The next 3 constants identify the extents of the code, RO data region and the 52 * limit of the BL3-2 image. These addresses are used by the MMU setup code and 53 * therefore they must be page-aligned. It is the responsibility of the linker 54 * script to ensure that __RO_START__, __RO_END__ & __BL32_END__ linker symbols 55 * refer to page-aligned addresses. 56 */ 57 #define BL32_RO_BASE (unsigned long)(&__RO_START__) 58 #define BL32_RO_LIMIT (unsigned long)(&__RO_END__) 59 #define BL32_END (unsigned long)(&__BL32_END__) 60 61 #if USE_COHERENT_MEM 62 /* 63 * The next 2 constants identify the extents of the coherent memory region. 64 * These addresses are used by the MMU setup code and therefore they must be 65 * page-aligned. It is the responsibility of the linker script to ensure that 66 * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to 67 * page-aligned addresses. 68 */ 69 #define BL32_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__) 70 #define BL32_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__) 71 #endif 72 73 /******************************************************************************* 74 * Initialize the UART 75 ******************************************************************************/ 76 void tsp_early_platform_setup(void) 77 { 78 /* 79 * Initialize a different console than already in use to display 80 * messages from TSP 81 */ 82 console_init(PL011_UART0_BASE, PL011_UART0_CLK_IN_HZ, PL011_BAUDRATE); 83 } 84 85 /******************************************************************************* 86 * Perform platform specific setup placeholder 87 ******************************************************************************/ 88 void tsp_platform_setup(void) 89 { 90 plat_gic_init(); 91 } 92 93 /******************************************************************************* 94 * Perform the very early platform specific architectural setup here. At the 95 * moment this only intializes the MMU 96 ******************************************************************************/ 97 void tsp_plat_arch_setup(void) 98 { 99 configure_mmu_el1(BL32_RO_BASE, 100 (BL32_END - BL32_RO_BASE), 101 BL32_RO_BASE, 102 BL32_RO_LIMIT 103 #if USE_COHERENT_MEM 104 , BL32_COHERENT_RAM_BASE, 105 BL32_COHERENT_RAM_LIMIT 106 #endif 107 ); 108 } 109
