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109 lines
2.4 KiB
109 lines
2.4 KiB
/*
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* Copyright (c) 2015-2020, Renesas Electronics Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <stdarg.h>
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#include <stdint.h>
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#include <platform_def.h>
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#include <arch_helpers.h>
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#include <common/debug.h>
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#include <lib/bakery_lock.h>
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#include "rcar_def.h"
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#include "rcar_private.h"
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#include "rcar_printf.h"
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#define INDEX_TIMER_COUNT (4U)
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#define RCAR_LOG_HEAD (('T' << 0) | ('L' << 8) | ('O' << 16) | ('G' << 24))
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/*
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* The log is initialized and used before BL31 xlat tables are initialized,
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* therefore the log memory is a device memory at that point. Make sure the
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* memory is correclty aligned and accessed only with up-to 32bit, aligned,
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* writes.
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*/
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CASSERT((RCAR_BL31_LOG_BASE & 0x7) == 0, assert_bl31_log_base_unaligned);
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CASSERT((RCAR_BL31_LOG_MAX & 0x7) == 0, assert_bl31_log_max_unaligned);
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extern RCAR_INSTANTIATE_LOCK typedef struct log_head {
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uint32_t head;
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uint32_t index;
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uint32_t size;
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uint32_t res;
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} loghead_t;
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typedef struct log_map {
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loghead_t header;
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uint8_t log_data[RCAR_BL31_LOG_MAX];
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uint8_t res_data[RCAR_LOG_RES_SIZE];
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} logmap_t;
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int32_t rcar_set_log_data(int32_t c)
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{
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logmap_t *t_log;
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t_log = (logmap_t *) RCAR_BL31_LOG_BASE;
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rcar_lock_get();
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/*
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* If index is broken, then index and size initialize
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*/
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if (t_log->header.index >= (uint32_t) RCAR_BL31_LOG_MAX) {
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t_log->header.index = 0U;
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t_log->header.size = 0U;
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}
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/*
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* data store to log area then index and size renewal
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*/
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t_log->log_data[t_log->header.index] = (uint8_t) c;
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t_log->header.index++;
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if (t_log->header.size < t_log->header.index) {
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t_log->header.size = t_log->header.index;
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}
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if (t_log->header.index >= (uint32_t) RCAR_BL31_LOG_MAX) {
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t_log->header.index = 0U;
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}
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rcar_lock_release();
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return 1;
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}
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int32_t rcar_log_init(void)
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{
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logmap_t *t_log = (logmap_t *)RCAR_BL31_LOG_BASE;
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uint32_t *log_data = (uint32_t *)t_log->log_data;
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int16_t init_flag = 0;
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int i;
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if (t_log->header.head != RCAR_LOG_HEAD) {
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/*
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* Log header is not "TLOG", then log area initialize
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*/
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init_flag = 1;
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}
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if (t_log->header.index >= (uint32_t) RCAR_BL31_LOG_MAX) {
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/*
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* index is broken, then log area initialize
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*/
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init_flag = 1;
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}
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if (init_flag == 1) {
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for (i = 0; i < RCAR_BL31_LOG_MAX; i += 4)
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*log_data++ = 0;
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t_log->header.head = RCAR_LOG_HEAD;
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t_log->header.index = 0U;
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t_log->header.size = 0U;
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}
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rcar_lock_init();
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return 1;
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}
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