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