1 /* 2 * Copyright (c) 2020, 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 <mt_gic_v3.h> 19 #include <plat_params.h> 20 #include <plat_private.h> 21 22 static entry_point_info_t bl32_ep_info; 23 static entry_point_info_t bl33_ep_info; 24 25 /******************************************************************************* 26 * Return a pointer to the 'entry_point_info' structure of the next image for 27 * the security state specified. BL33 corresponds to the non-secure image type 28 * while BL32 corresponds to the secure image type. A NULL pointer is returned 29 * if the image does not exist. 30 ******************************************************************************/ 31 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 32 { 33 entry_point_info_t *next_image_info; 34 35 next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info; 36 assert(next_image_info->h.type == PARAM_EP); 37 38 /* None of the images on this platform can have 0x0 as the entrypoint */ 39 if (next_image_info->pc) { 40 return next_image_info; 41 } else { 42 return NULL; 43 } 44 } 45 46 /******************************************************************************* 47 * Perform any BL31 early platform setup. Here is an opportunity to copy 48 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they 49 * are lost (potentially). This needs to be done before the MMU is initialized 50 * so that the memory layout can be used while creating page tables. 51 * BL2 has flushed this information to memory, so we are guaranteed to pick up 52 * good data. 53 ******************************************************************************/ 54 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 55 u_register_t arg2, u_register_t arg3) 56 { 57 static console_t console; 58 59 params_early_setup(arg1); 60 61 #if COREBOOT 62 if (coreboot_serial.type) { 63 console_16550_register(coreboot_serial.baseaddr, 64 coreboot_serial.input_hertz, 65 coreboot_serial.baud, 66 &console); 67 } 68 #else 69 console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console); 70 #endif 71 72 NOTICE("MT8192 bl31_setup\n"); 73 74 bl31_params_parse_helper(arg0, &bl32_ep_info, &bl33_ep_info); 75 } 76 77 78 /******************************************************************************* 79 * Perform any BL31 platform setup code 80 ******************************************************************************/ 81 void bl31_platform_setup(void) 82 { 83 /* Initialize the GIC driver, CPU and distributor interfaces */ 84 mt_gic_driver_init(); 85 mt_gic_init(); 86 } 87 88 /******************************************************************************* 89 * Perform the very early platform specific architectural setup here. At the 90 * moment this is only intializes the mmu in a quick and dirty way. 91 ******************************************************************************/ 92 void bl31_plat_arch_setup(void) 93 { 94 plat_configure_mmu_el3(BL31_START, 95 BL31_END - BL31_START, 96 BL_CODE_BASE, 97 BL_CODE_END); 98 } 99