1 /* 2 * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <bl_common.h> 9 #include <bl31.h> 10 #include <console.h> 11 #include <debug.h> 12 #include <errno.h> 13 #include <platform.h> 14 #include <pl011.h> 15 #include <xlat_tables.h> 16 #include "versal_private.h" 17 18 static entry_point_info_t bl32_image_ep_info; 19 static entry_point_info_t bl33_image_ep_info; 20 static console_pl011_t versal_runtime_console; 21 22 /* 23 * Return a pointer to the 'entry_point_info' structure of the next image for 24 * the security state specified. BL33 corresponds to the non-secure image type 25 * while BL32 corresponds to the secure image type. A NULL pointer is returned 26 * if the image does not exist. 27 */ 28 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 29 { 30 assert(sec_state_is_valid(type)); 31 32 if (type == NON_SECURE) 33 return &bl33_image_ep_info; 34 35 return &bl32_image_ep_info; 36 } 37 38 /* 39 * Perform any BL31 specific platform actions. Here is an opportunity to copy 40 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they 41 * are lost (potentially). This needs to be done before the MMU is initialized 42 * so that the memory layout can be used while creating page tables. 43 */ 44 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 45 u_register_t arg2, u_register_t arg3) 46 { 47 48 /* Initialize the console to provide early debug support */ 49 int rc = console_pl011_register(VERSAL_UART_BASE, 50 VERSAL_UART_CLOCK, 51 VERSAL_UART_BAUDRATE, 52 &versal_runtime_console); 53 if (rc == 0) 54 panic(); 55 56 console_set_scope(&versal_runtime_console.console, CONSOLE_FLAG_BOOT | 57 CONSOLE_FLAG_RUNTIME); 58 59 /* Initialize the platform config for future decision making */ 60 versal_config_setup(); 61 /* There are no parameters from BL2 if BL31 is a reset vector */ 62 assert(arg0 == 0U); 63 assert(arg1 == 0U); 64 65 /* 66 * Do initial security configuration to allow DRAM/device access. On 67 * Base VERSAL only DRAM security is programmable (via TrustZone), but 68 * other platforms might have more programmable security devices 69 * present. 70 */ 71 72 /* Populate common information for BL32 and BL33 */ 73 SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0); 74 SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE); 75 SET_PARAM_HEAD(&bl33_image_ep_info, PARAM_EP, VERSION_1, 0); 76 SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE); 77 78 /* use build time defaults in JTAG boot mode */ 79 bl32_image_ep_info.pc = BL32_BASE; 80 bl32_image_ep_info.spsr = 0; 81 bl33_image_ep_info.pc = plat_get_ns_image_entrypoint(); 82 bl33_image_ep_info.spsr = SPSR_64(MODE_EL2, MODE_SP_ELX, 83 DISABLE_ALL_EXCEPTIONS); 84 85 NOTICE("BL31: Secure code at 0x%lx\n", bl32_image_ep_info.pc); 86 NOTICE("BL31: Non secure code at 0x%lx\n", bl33_image_ep_info.pc); 87 } 88 89 void bl31_platform_setup(void) 90 { 91 /* Initialize the gic cpu and distributor interfaces */ 92 plat_versal_gic_driver_init(); 93 plat_versal_gic_init(); 94 } 95 96 void bl31_plat_runtime_setup(void) 97 { 98 } 99 100 /* 101 * Perform the very early platform specific architectural setup here. 102 */ 103 void bl31_plat_arch_setup(void) 104 { 105 const mmap_region_t bl_regions[] = { 106 MAP_REGION_FLAT(BL31_BASE, BL31_END - BL31_BASE, 107 MT_MEMORY | MT_RW | MT_SECURE), 108 MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE, 109 MT_CODE | MT_SECURE), 110 MAP_REGION_FLAT(BL_RO_DATA_BASE, BL_RO_DATA_END - BL_RO_DATA_BASE, 111 MT_RO_DATA | MT_SECURE), 112 MAP_REGION_FLAT(BL_COHERENT_RAM_BASE, 113 BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, 114 MT_DEVICE | MT_RW | MT_SECURE), 115 {0} 116 }; 117 118 setup_page_tables(bl_regions, plat_versal_get_mmap()); 119 enable_mmu_el3(0); 120 } 121