1 /* 2 * Copyright (c) 2015-2024, Arm Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 9 #include <common/bl_common.h> 10 #include <drivers/arm/pl061_gpio.h> 11 #include <lib/gpt_rme/gpt_rme.h> 12 #include <plat/common/platform.h> 13 14 #include "qemu_private.h" 15 16 #define MAP_BL31_TOTAL MAP_REGION_FLAT( \ 17 BL31_BASE, \ 18 BL31_END - BL31_BASE, \ 19 MT_MEMORY | MT_RW | EL3_PAS) 20 #define MAP_BL31_RO MAP_REGION_FLAT( \ 21 BL_CODE_BASE, \ 22 BL_CODE_END - BL_CODE_BASE, \ 23 MT_CODE | EL3_PAS), \ 24 MAP_REGION_FLAT( \ 25 BL_RO_DATA_BASE, \ 26 BL_RO_DATA_END \ 27 - BL_RO_DATA_BASE, \ 28 MT_RO_DATA | EL3_PAS) 29 30 #if USE_COHERENT_MEM 31 #define MAP_BL_COHERENT_RAM MAP_REGION_FLAT( \ 32 BL_COHERENT_RAM_BASE, \ 33 BL_COHERENT_RAM_END \ 34 - BL_COHERENT_RAM_BASE, \ 35 MT_DEVICE | MT_RW | EL3_PAS) 36 #endif 37 38 /* 39 * Placeholder variables for copying the arguments that have been passed to 40 * BL3-1 from BL2. 41 */ 42 static entry_point_info_t bl32_image_ep_info; 43 static entry_point_info_t bl33_image_ep_info; 44 45 /******************************************************************************* 46 * Perform any BL3-1 early platform setup. Here is an opportunity to copy 47 * parameters passed by the calling EL (S-EL1 in BL2 & EL3 in BL1) before 48 * they are lost (potentially). This needs to be done before the MMU is 49 * initialized so that the memory layout can be used while creating page 50 * tables. BL2 has flushed this information to memory, so we are guaranteed 51 * to pick up good data. 52 ******************************************************************************/ 53 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 54 u_register_t arg2, u_register_t arg3) 55 { 56 /* Initialize the console to provide early debug support */ 57 qemu_console_init(); 58 59 /* Platform names have to be lowercase. */ 60 #ifdef PLAT_qemu_sbsa 61 sip_svc_init(); 62 #endif 63 64 /* 65 * Check params passed from BL2 66 */ 67 bl_params_t *params_from_bl2 = (bl_params_t *)arg0; 68 69 assert(params_from_bl2); 70 assert(params_from_bl2->h.type == PARAM_BL_PARAMS); 71 assert(params_from_bl2->h.version >= VERSION_2); 72 73 bl_params_node_t *bl_params = params_from_bl2->head; 74 75 /* 76 * Copy BL33 and BL32 (if present), entry point information. 77 * They are stored in Secure RAM, in BL2's address space. 78 */ 79 while (bl_params) { 80 if (bl_params->image_id == BL32_IMAGE_ID) 81 bl32_image_ep_info = *bl_params->ep_info; 82 83 if (bl_params->image_id == BL33_IMAGE_ID) 84 bl33_image_ep_info = *bl_params->ep_info; 85 86 bl_params = bl_params->next_params_info; 87 } 88 89 if (!bl33_image_ep_info.pc) 90 panic(); 91 } 92 93 void bl31_plat_arch_setup(void) 94 { 95 const mmap_region_t bl_regions[] = { 96 MAP_BL31_TOTAL, 97 MAP_BL31_RO, 98 #if USE_COHERENT_MEM 99 MAP_BL_COHERENT_RAM, 100 #endif 101 #if ENABLE_RME 102 MAP_GPT_L0_REGION, 103 MAP_GPT_L1_REGION, 104 MAP_RMM_SHARED_MEM, 105 #endif 106 {0} 107 }; 108 109 setup_page_tables(bl_regions, plat_qemu_get_mmap()); 110 111 enable_mmu_el3(0); 112 113 #if ENABLE_RME 114 /* 115 * Initialise Granule Protection library and enable GPC for the primary 116 * processor. The tables have already been initialized by a previous BL 117 * stage, so there is no need to provide any PAS here. This function 118 * sets up pointers to those tables. 119 */ 120 if (gpt_runtime_init() < 0) { 121 ERROR("gpt_runtime_init() failed!\n"); 122 panic(); 123 } 124 #endif /* ENABLE_RME */ 125 126 } 127 128 static void qemu_gpio_init(void) 129 { 130 #ifdef SECURE_GPIO_BASE 131 pl061_gpio_init(); 132 pl061_gpio_register(SECURE_GPIO_BASE, 0); 133 #endif 134 } 135 136 void bl31_platform_setup(void) 137 { 138 plat_qemu_gic_init(); 139 qemu_gpio_init(); 140 } 141 142 unsigned int plat_get_syscnt_freq2(void) 143 { 144 return SYS_COUNTER_FREQ_IN_TICKS; 145 } 146 147 /******************************************************************************* 148 * Return a pointer to the 'entry_point_info' structure of the next image 149 * for the security state specified. BL3-3 corresponds to the non-secure 150 * image type while BL3-2 corresponds to the secure image type. A NULL 151 * pointer is returned if the image does not exist. 152 ******************************************************************************/ 153 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 154 { 155 entry_point_info_t *next_image_info; 156 157 assert(sec_state_is_valid(type)); 158 next_image_info = (type == NON_SECURE) 159 ? &bl33_image_ep_info : &bl32_image_ep_info; 160 /* 161 * None of the images on the ARM development platforms can have 0x0 162 * as the entrypoint 163 */ 164 if (next_image_info->pc) 165 return next_image_info; 166 else 167 return NULL; 168 } 169