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/generic_delay_timer.h> 15 #include <drivers/ti/uart/uart_16550.h> 16 #include <lib/coreboot.h> 17 18 /* Platform Includes */ 19 #include <emi_mpu.h> 20 #include <mt_gic_v3.h> 21 #include <mt_timer.h> 22 #include <mtgpio.h> 23 #include <mtk_dcm.h> 24 #include <plat_params.h> 25 #include <plat_private.h> 26 27 static entry_point_info_t bl32_ep_info; 28 static entry_point_info_t bl33_ep_info; 29 30 /******************************************************************************* 31 * Return a pointer to the 'entry_point_info' structure of the next image for 32 * the security state specified. BL33 corresponds to the non-secure image type 33 * while BL32 corresponds to the secure image type. A NULL pointer is returned 34 * if the image does not exist. 35 ******************************************************************************/ 36 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 37 { 38 entry_point_info_t *next_image_info; 39 40 next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info; 41 assert(next_image_info->h.type == PARAM_EP); 42 43 /* None of the images on this platform can have 0x0 as the entrypoint */ 44 if (next_image_info->pc) { 45 return next_image_info; 46 } else { 47 return NULL; 48 } 49 } 50 51 /******************************************************************************* 52 * Perform any BL31 early platform setup. Here is an opportunity to copy 53 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they 54 * are lost (potentially). This needs to be done before the MMU is initialized 55 * so that the memory layout can be used while creating page tables. 56 * BL2 has flushed this information to memory, so we are guaranteed to pick up 57 * good data. 58 ******************************************************************************/ 59 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 60 u_register_t arg2, u_register_t arg3) 61 { 62 static console_t console; 63 64 params_early_setup(arg1); 65 66 #if COREBOOT 67 if (coreboot_serial.type) { 68 console_16550_register(coreboot_serial.baseaddr, 69 coreboot_serial.input_hertz, 70 coreboot_serial.baud, 71 &console); 72 } 73 #else 74 console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console); 75 #endif 76 77 INFO("MT8186 bl31_setup\n"); 78 79 bl31_params_parse_helper(arg0, &bl32_ep_info, &bl33_ep_info); 80 } 81 82 83 /******************************************************************************* 84 * Perform any BL31 platform setup code 85 ******************************************************************************/ 86 void bl31_platform_setup(void) 87 { 88 dcm_set_default(); 89 90 /* Initialize the GIC driver, CPU and distributor interfaces */ 91 mt_gic_driver_init(); 92 mt_gic_init(); 93 94 mt_gpio_init(); 95 mt_systimer_init(); 96 generic_delay_timer_init(); 97 98 emi_mpu_init(); 99 } 100 101 /******************************************************************************* 102 * Perform the very early platform specific architectural setup here. At the 103 * moment this is only intializes the mmu in a quick and dirty way. 104 ******************************************************************************/ 105 void bl31_plat_arch_setup(void) 106 { 107 plat_configure_mmu_el3(BL31_START, 108 BL31_END - BL31_START, 109 BL_CODE_BASE, 110 BL_CODE_END); 111 } 112