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