1*865e3474SBiju Das /* 2*865e3474SBiju Das * Copyright (c) 2015-2020, Renesas Electronics Corporation. All rights reserved. 3*865e3474SBiju Das * 4*865e3474SBiju Das * SPDX-License-Identifier: BSD-3-Clause 5*865e3474SBiju Das */ 6*865e3474SBiju Das 7*865e3474SBiju Das #include <stdarg.h> 8*865e3474SBiju Das #include <stdint.h> 9*865e3474SBiju Das 10*865e3474SBiju Das #include <platform_def.h> 11*865e3474SBiju Das 12*865e3474SBiju Das #include <arch_helpers.h> 13*865e3474SBiju Das #include <common/debug.h> 14*865e3474SBiju Das #include <lib/bakery_lock.h> 15*865e3474SBiju Das 16*865e3474SBiju Das #include "rcar_def.h" 17*865e3474SBiju Das #include "rcar_private.h" 18*865e3474SBiju Das #include "rcar_printf.h" 19*865e3474SBiju Das 20*865e3474SBiju Das #define INDEX_TIMER_COUNT (4U) 21*865e3474SBiju Das 22*865e3474SBiju Das #define RCAR_LOG_HEAD (('T' << 0) | ('L' << 8) | ('O' << 16) | ('G' << 24)) 23*865e3474SBiju Das 24*865e3474SBiju Das /* 25*865e3474SBiju Das * The log is initialized and used before BL31 xlat tables are initialized, 26*865e3474SBiju Das * therefore the log memory is a device memory at that point. Make sure the 27*865e3474SBiju Das * memory is correclty aligned and accessed only with up-to 32bit, aligned, 28*865e3474SBiju Das * writes. 29*865e3474SBiju Das */ 30*865e3474SBiju Das CASSERT((RCAR_BL31_LOG_BASE & 0x7) == 0, assert_bl31_log_base_unaligned); 31*865e3474SBiju Das CASSERT((RCAR_BL31_LOG_MAX & 0x7) == 0, assert_bl31_log_max_unaligned); 32*865e3474SBiju Das 33*865e3474SBiju Das extern RCAR_INSTANTIATE_LOCK typedef struct log_head { 34*865e3474SBiju Das uint32_t head; 35*865e3474SBiju Das uint32_t index; 36*865e3474SBiju Das uint32_t size; 37*865e3474SBiju Das uint32_t res; 38*865e3474SBiju Das } loghead_t; 39*865e3474SBiju Das 40*865e3474SBiju Das typedef struct log_map { 41*865e3474SBiju Das loghead_t header; 42*865e3474SBiju Das uint8_t log_data[RCAR_BL31_LOG_MAX]; 43*865e3474SBiju Das uint8_t res_data[RCAR_LOG_RES_SIZE]; 44*865e3474SBiju Das } logmap_t; 45*865e3474SBiju Das 46*865e3474SBiju Das int32_t rcar_set_log_data(int32_t c) 47*865e3474SBiju Das { 48*865e3474SBiju Das logmap_t *t_log; 49*865e3474SBiju Das 50*865e3474SBiju Das t_log = (logmap_t *) RCAR_BL31_LOG_BASE; 51*865e3474SBiju Das 52*865e3474SBiju Das rcar_lock_get(); 53*865e3474SBiju Das 54*865e3474SBiju Das /* 55*865e3474SBiju Das * If index is broken, then index and size initialize 56*865e3474SBiju Das */ 57*865e3474SBiju Das if (t_log->header.index >= (uint32_t) RCAR_BL31_LOG_MAX) { 58*865e3474SBiju Das t_log->header.index = 0U; 59*865e3474SBiju Das t_log->header.size = 0U; 60*865e3474SBiju Das } 61*865e3474SBiju Das /* 62*865e3474SBiju Das * data store to log area then index and size renewal 63*865e3474SBiju Das */ 64*865e3474SBiju Das t_log->log_data[t_log->header.index] = (uint8_t) c; 65*865e3474SBiju Das t_log->header.index++; 66*865e3474SBiju Das if (t_log->header.size < t_log->header.index) { 67*865e3474SBiju Das t_log->header.size = t_log->header.index; 68*865e3474SBiju Das } 69*865e3474SBiju Das if (t_log->header.index >= (uint32_t) RCAR_BL31_LOG_MAX) { 70*865e3474SBiju Das t_log->header.index = 0U; 71*865e3474SBiju Das } 72*865e3474SBiju Das 73*865e3474SBiju Das rcar_lock_release(); 74*865e3474SBiju Das 75*865e3474SBiju Das return 1; 76*865e3474SBiju Das } 77*865e3474SBiju Das 78*865e3474SBiju Das int32_t rcar_log_init(void) 79*865e3474SBiju Das { 80*865e3474SBiju Das logmap_t *t_log = (logmap_t *)RCAR_BL31_LOG_BASE; 81*865e3474SBiju Das uint32_t *log_data = (uint32_t *)t_log->log_data; 82*865e3474SBiju Das int16_t init_flag = 0; 83*865e3474SBiju Das int i; 84*865e3474SBiju Das 85*865e3474SBiju Das if (t_log->header.head != RCAR_LOG_HEAD) { 86*865e3474SBiju Das /* 87*865e3474SBiju Das * Log header is not "TLOG", then log area initialize 88*865e3474SBiju Das */ 89*865e3474SBiju Das init_flag = 1; 90*865e3474SBiju Das } 91*865e3474SBiju Das if (t_log->header.index >= (uint32_t) RCAR_BL31_LOG_MAX) { 92*865e3474SBiju Das /* 93*865e3474SBiju Das * index is broken, then log area initialize 94*865e3474SBiju Das */ 95*865e3474SBiju Das init_flag = 1; 96*865e3474SBiju Das } 97*865e3474SBiju Das if (init_flag == 1) { 98*865e3474SBiju Das for (i = 0; i < RCAR_BL31_LOG_MAX; i += 4) 99*865e3474SBiju Das *log_data++ = 0; 100*865e3474SBiju Das 101*865e3474SBiju Das t_log->header.head = RCAR_LOG_HEAD; 102*865e3474SBiju Das t_log->header.index = 0U; 103*865e3474SBiju Das t_log->header.size = 0U; 104*865e3474SBiju Das } 105*865e3474SBiju Das rcar_lock_init(); 106*865e3474SBiju Das 107*865e3474SBiju Das return 1; 108*865e3474SBiju Das } 109