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 <mt_gic_v3.h> 20 #include <mt_timer.h> 21 #include <mtgpio.h> 22 #include <plat_params.h> 23 #include <plat_private.h> 24 25 static entry_point_info_t bl32_ep_info; 26 static entry_point_info_t bl33_ep_info; 27 28 /******************************************************************************* 29 * Return a pointer to the 'entry_point_info' structure of the next image for 30 * the security state specified. BL33 corresponds to the non-secure image type 31 * while BL32 corresponds to the secure image type. A NULL pointer is returned 32 * if the image does not exist. 33 ******************************************************************************/ 34 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 35 { 36 entry_point_info_t *next_image_info; 37 38 next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info; 39 assert(next_image_info->h.type == PARAM_EP); 40 41 /* None of the images on this platform can have 0x0 as the entrypoint */ 42 if (next_image_info->pc) { 43 return next_image_info; 44 } else { 45 return NULL; 46 } 47 } 48 49 /******************************************************************************* 50 * Perform any BL31 early platform setup. Here is an opportunity to copy 51 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they 52 * are lost (potentially). This needs to be done before the MMU is initialized 53 * so that the memory layout can be used while creating page tables. 54 * BL2 has flushed this information to memory, so we are guaranteed to pick up 55 * good data. 56 ******************************************************************************/ 57 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 58 u_register_t arg2, u_register_t arg3) 59 { 60 static console_t console; 61 62 params_early_setup(arg1); 63 64 #if COREBOOT 65 if (coreboot_serial.type) { 66 console_16550_register(coreboot_serial.baseaddr, 67 coreboot_serial.input_hertz, 68 coreboot_serial.baud, 69 &console); 70 } 71 #else 72 console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console); 73 #endif 74 75 NOTICE("MT8195 bl31_setup\n"); 76 77 bl31_params_parse_helper(arg0, &bl32_ep_info, &bl33_ep_info); 78 } 79 80 81 /******************************************************************************* 82 * Perform any BL31 platform setup code 83 ******************************************************************************/ 84 void bl31_platform_setup(void) 85 { 86 /* Initialize the GIC driver, CPU and distributor interfaces */ 87 mt_gic_driver_init(); 88 mt_gic_init(); 89 90 mt_gpio_init(); 91 mt_systimer_init(); 92 generic_delay_timer_init(); 93 } 94 95 /******************************************************************************* 96 * Perform the very early platform specific architectural setup here. At the 97 * moment this is only intializes the mmu in a quick and dirty way. 98 ******************************************************************************/ 99 void bl31_plat_arch_setup(void) 100 { 101 plat_configure_mmu_el3(BL31_START, 102 BL31_END - BL31_START, 103 BL_CODE_BASE, 104 BL_CODE_END); 105 } 106