| Jorge Ramirez-Ortiz | f1751c0 | 2018-09-23 09:41:00 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015-2017, Renesas Electronics Corporation. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <debug.h> |
| 8 | #include <stdarg.h> |
| 9 | #include <stdint.h> |
| 10 | |
| 11 | #include <arch_helpers.h> |
| 12 | #include <platform_def.h> |
| 13 | #include <bakery_lock.h> |
| 14 | #include "rcar_def.h" |
| 15 | #include "rcar_private.h" |
| 16 | #include "rcar_printf.h" |
| 17 | |
| 18 | #define INDEX_TIMER_COUNT (4U) |
| 19 | |
| 20 | extern RCAR_INSTANTIATE_LOCK typedef struct log_head { |
| 21 | uint8_t head[4]; |
| 22 | uint32_t index; |
| 23 | uint32_t size; |
| 24 | uint8_t res[4]; |
| 25 | } loghead_t; |
| 26 | |
| 27 | typedef struct log_map { |
| 28 | loghead_t header; |
| 29 | uint8_t log_data[RCAR_BL31_LOG_MAX]; |
| 30 | uint8_t res_data[RCAR_LOG_RES_SIZE]; |
| 31 | } logmap_t; |
| 32 | |
| 33 | int32_t rcar_set_log_data(int32_t c) |
| 34 | { |
| 35 | logmap_t *t_log; |
| 36 | |
| 37 | t_log = (logmap_t *) RCAR_BL31_LOG_BASE; |
| 38 | |
| 39 | rcar_lock_get(); |
| 40 | |
| 41 | /* |
| 42 | * If index is broken, then index and size initialize |
| 43 | */ |
| 44 | if (t_log->header.index >= (uint32_t) RCAR_BL31_LOG_MAX) { |
| 45 | t_log->header.index = 0U; |
| 46 | t_log->header.size = 0U; |
| 47 | } |
| 48 | /* |
| 49 | * data store to log area then index and size renewal |
| 50 | */ |
| 51 | t_log->log_data[t_log->header.index] = (uint8_t) c; |
| 52 | t_log->header.index++; |
| 53 | if (t_log->header.size < t_log->header.index) { |
| 54 | t_log->header.size = t_log->header.index; |
| 55 | } |
| 56 | if (t_log->header.index >= (uint32_t) RCAR_BL31_LOG_MAX) { |
| 57 | t_log->header.index = 0U; |
| 58 | } |
| 59 | |
| 60 | rcar_lock_release(); |
| 61 | |
| 62 | return 1; |
| 63 | } |
| 64 | |
| 65 | int32_t rcar_log_init(void) |
| 66 | { |
| 67 | |
| 68 | static const uint8_t const_header[] = "TLOG"; |
| 69 | logmap_t *t_log; |
| 70 | int16_t init_flag = 0; |
| 71 | |
| 72 | t_log = (logmap_t *) RCAR_BL31_LOG_BASE; |
| 73 | if (memcmp |
| 74 | ((const void *)t_log->header.head, (const void *)const_header, |
| 75 | sizeof(t_log->header.head)) != 0) { |
| 76 | /* |
| 77 | * Log header is not "TLOG", then log area initialize |
| 78 | */ |
| 79 | init_flag = 1; |
| 80 | } |
| 81 | if (t_log->header.index >= (uint32_t) RCAR_BL31_LOG_MAX) { |
| 82 | /* |
| 83 | * index is broken, then log area initialize |
| 84 | */ |
| 85 | init_flag = 1; |
| 86 | } |
| 87 | if (init_flag == 1) { |
| 88 | (void)memset((void *)t_log->log_data, 0, |
| 89 | (size_t) RCAR_BL31_LOG_MAX); |
| 90 | (void)memcpy((void *)t_log->header.head, |
| 91 | (const void *)const_header, |
| 92 | sizeof(t_log->header.head)); |
| 93 | t_log->header.index = 0U; |
| 94 | t_log->header.size = 0U; |
| 95 | #ifndef IMAGE_BL2 |
| 96 | rcar_stack_generic_timer[INDEX_TIMER_COUNT] = 0U; |
| 97 | #endif |
| 98 | } |
| 99 | rcar_lock_init(); |
| 100 | |
| 101 | return 1; |
| 102 | } |