1 /* 2 * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <errno.h> 9 #include <plat_arm.h> 10 #include <plat_private.h> 11 #include <bl31/bl31.h> 12 #include <common/bl_common.h> 13 #include <common/debug.h> 14 #include <drivers/arm/pl011.h> 15 #include <drivers/console.h> 16 #include <lib/xlat_tables/xlat_tables.h> 17 #include <plat/common/platform.h> 18 19 static entry_point_info_t bl32_image_ep_info; 20 static entry_point_info_t bl33_image_ep_info; 21 static console_pl011_t versal_runtime_console; 22 23 /* 24 * Return a pointer to the 'entry_point_info' structure of the next image for 25 * the security state specified. BL33 corresponds to the non-secure image type 26 * while BL32 corresponds to the secure image type. A NULL pointer is returned 27 * if the image does not exist. 28 */ 29 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 30 { 31 assert(sec_state_is_valid(type)); 32 33 if (type == NON_SECURE) 34 return &bl33_image_ep_info; 35 36 return &bl32_image_ep_info; 37 } 38 39 /* 40 * Perform any BL31 specific platform actions. Here is an opportunity to copy 41 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they 42 * are lost (potentially). This needs to be done before the MMU is initialized 43 * so that the memory layout can be used while creating page tables. 44 */ 45 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 46 u_register_t arg2, u_register_t arg3) 47 { 48 49 /* Initialize the console to provide early debug support */ 50 int rc = console_pl011_register(VERSAL_UART_BASE, 51 VERSAL_UART_CLOCK, 52 VERSAL_UART_BAUDRATE, 53 &versal_runtime_console); 54 if (rc == 0) 55 panic(); 56 57 console_set_scope(&versal_runtime_console.console, CONSOLE_FLAG_BOOT | 58 CONSOLE_FLAG_RUNTIME); 59 60 /* Initialize the platform config for future decision making */ 61 versal_config_setup(); 62 /* There are no parameters from BL2 if BL31 is a reset vector */ 63 assert(arg0 == 0U); 64 assert(arg1 == 0U); 65 66 /* 67 * Do initial security configuration to allow DRAM/device access. On 68 * Base VERSAL only DRAM security is programmable (via TrustZone), but 69 * other platforms might have more programmable security devices 70 * present. 71 */ 72 73 /* Populate common information for BL32 and BL33 */ 74 SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0); 75 SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE); 76 SET_PARAM_HEAD(&bl33_image_ep_info, PARAM_EP, VERSION_1, 0); 77 SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE); 78 79 /* use build time defaults in JTAG boot mode */ 80 bl32_image_ep_info.pc = BL32_BASE; 81 bl32_image_ep_info.spsr = 0; 82 bl33_image_ep_info.pc = plat_get_ns_image_entrypoint(); 83 bl33_image_ep_info.spsr = SPSR_64(MODE_EL2, MODE_SP_ELX, 84 DISABLE_ALL_EXCEPTIONS); 85 86 NOTICE("BL31: Secure code at 0x%lx\n", bl32_image_ep_info.pc); 87 NOTICE("BL31: Non secure code at 0x%lx\n", bl33_image_ep_info.pc); 88 } 89 90 void bl31_platform_setup(void) 91 { 92 /* Initialize the gic cpu and distributor interfaces */ 93 plat_versal_gic_driver_init(); 94 plat_versal_gic_init(); 95 } 96 97 void bl31_plat_runtime_setup(void) 98 { 99 } 100 101 /* 102 * Perform the very early platform specific architectural setup here. 103 */ 104 void bl31_plat_arch_setup(void) 105 { 106 plat_arm_interconnect_init(); 107 plat_arm_interconnect_enter_coherency(); 108 109 const mmap_region_t bl_regions[] = { 110 MAP_REGION_FLAT(BL31_BASE, BL31_END - BL31_BASE, 111 MT_MEMORY | MT_RW | MT_SECURE), 112 MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE, 113 MT_CODE | MT_SECURE), 114 MAP_REGION_FLAT(BL_RO_DATA_BASE, BL_RO_DATA_END - BL_RO_DATA_BASE, 115 MT_RO_DATA | MT_SECURE), 116 MAP_REGION_FLAT(BL_COHERENT_RAM_BASE, 117 BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, 118 MT_DEVICE | MT_RW | MT_SECURE), 119 {0} 120 }; 121 122 setup_page_tables(bl_regions, plat_versal_get_mmap()); 123 enable_mmu_el3(0); 124 } 125