1 /* 2 * Copyright (c) 2021, MediaTek Inc. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 /* System Includes */ 8 #include <assert.h> 9 10 /* Project Includes */ 11 #include <common/bl_common.h> 12 #include <common/debug.h> 13 #include <common/desc_image_load.h> 14 #include <drivers/ti/uart/uart_16550.h> 15 #include <lib/coreboot.h> 16 17 /* Platform Includes */ 18 #include <plat_params.h> 19 #include <plat_private.h> 20 21 static entry_point_info_t bl32_ep_info; 22 static entry_point_info_t bl33_ep_info; 23 24 /******************************************************************************* 25 * Return a pointer to the 'entry_point_info' structure of the next image for 26 * the security state specified. BL33 corresponds to the non-secure image type 27 * while BL32 corresponds to the secure image type. A NULL pointer is returned 28 * if the image does not exist. 29 ******************************************************************************/ 30 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 31 { 32 entry_point_info_t *next_image_info; 33 34 next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info; 35 assert(next_image_info->h.type == PARAM_EP); 36 37 /* None of the images on this platform can have 0x0 as the entrypoint */ 38 if (next_image_info->pc) { 39 return next_image_info; 40 } else { 41 return NULL; 42 } 43 } 44 45 /******************************************************************************* 46 * Perform any BL31 early platform setup. Here is an opportunity to copy 47 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they 48 * are lost (potentially). This needs to be done before the MMU is initialized 49 * so that the memory layout can be used while creating page tables. 50 * BL2 has flushed this information to memory, so we are guaranteed to pick up 51 * 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 static console_t console; 57 58 params_early_setup(arg1); 59 60 #if COREBOOT 61 if (coreboot_serial.type) { 62 console_16550_register(coreboot_serial.baseaddr, 63 coreboot_serial.input_hertz, 64 coreboot_serial.baud, 65 &console); 66 } 67 #else 68 console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console); 69 #endif 70 71 INFO("MT8186 bl31_setup\n"); 72 73 bl31_params_parse_helper(arg0, &bl32_ep_info, &bl33_ep_info); 74 } 75 76 77 /******************************************************************************* 78 * Perform any BL31 platform setup code 79 ******************************************************************************/ 80 void bl31_platform_setup(void) 81 { 82 } 83 84 /******************************************************************************* 85 * Perform the very early platform specific architectural setup here. At the 86 * moment this is only intializes the mmu in a quick and dirty way. 87 ******************************************************************************/ 88 void bl31_plat_arch_setup(void) 89 { 90 plat_configure_mmu_el3(BL31_START, 91 BL31_END - BL31_START, 92 BL_CODE_BASE, 93 BL_CODE_END); 94 } 95