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_spm.h> 21 #include <mt_timer.h> 22 #include <mtgpio.h> 23 #include <plat_params.h> 24 #include <plat_private.h> 25 26 static entry_point_info_t bl32_ep_info; 27 static entry_point_info_t bl33_ep_info; 28 29 /******************************************************************************* 30 * Return a pointer to the 'entry_point_info' structure of the next image for 31 * the security state specified. BL33 corresponds to the non-secure image type 32 * while BL32 corresponds to the secure image type. A NULL pointer is returned 33 * if the image does not exist. 34 ******************************************************************************/ 35 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 36 { 37 entry_point_info_t *next_image_info; 38 39 next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info; 40 assert(next_image_info->h.type == PARAM_EP); 41 42 /* None of the images on this platform can have 0x0 as the entrypoint */ 43 if (next_image_info->pc) { 44 return next_image_info; 45 } else { 46 return NULL; 47 } 48 } 49 50 /******************************************************************************* 51 * Perform any BL31 early platform setup. Here is an opportunity to copy 52 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they 53 * are lost (potentially). This needs to be done before the MMU is initialized 54 * so that the memory layout can be used while creating page tables. 55 * BL2 has flushed this information to memory, so we are guaranteed to pick up 56 * good data. 57 ******************************************************************************/ 58 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 59 u_register_t arg2, u_register_t arg3) 60 { 61 static console_t console; 62 63 params_early_setup(arg1); 64 65 #if COREBOOT 66 if (coreboot_serial.type) { 67 console_16550_register(coreboot_serial.baseaddr, 68 coreboot_serial.input_hertz, 69 coreboot_serial.baud, 70 &console); 71 } 72 #else 73 console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console); 74 #endif 75 76 NOTICE("MT8195 bl31_setup\n"); 77 78 bl31_params_parse_helper(arg0, &bl32_ep_info, &bl33_ep_info); 79 } 80 81 82 /******************************************************************************* 83 * Perform any BL31 platform setup code 84 ******************************************************************************/ 85 void bl31_platform_setup(void) 86 { 87 /* Initialize the GIC driver, CPU and distributor interfaces */ 88 mt_gic_driver_init(); 89 mt_gic_init(); 90 91 mt_gpio_init(); 92 mt_systimer_init(); 93 generic_delay_timer_init(); 94 spm_boot_init(); 95 } 96 97 /******************************************************************************* 98 * Perform the very early platform specific architectural setup here. At the 99 * moment this is only intializes the mmu in a quick and dirty way. 100 ******************************************************************************/ 101 void bl31_plat_arch_setup(void) 102 { 103 plat_configure_mmu_el3(BL31_START, 104 BL31_END - BL31_START, 105 BL_CODE_BASE, 106 BL_CODE_END); 107 } 108