rcar_gen3: drivers: console
Signed-off-by: ldts <jramirez@baylibre.com>
diff --git a/drivers/renesas/rcar/console/rcar_printf.c b/drivers/renesas/rcar/console/rcar_printf.c
new file mode 100644
index 0000000..9321b58
--- /dev/null
+++ b/drivers/renesas/rcar/console/rcar_printf.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2015-2017, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <debug.h>
+#include <stdarg.h>
+#include <stdint.h>
+
+#include <arch_helpers.h>
+#include <platform_def.h>
+#include <bakery_lock.h>
+#include "rcar_def.h"
+#include "rcar_private.h"
+#include "rcar_printf.h"
+
+#define INDEX_TIMER_COUNT (4U)
+
+extern RCAR_INSTANTIATE_LOCK typedef struct log_head {
+ uint8_t head[4];
+ uint32_t index;
+ uint32_t size;
+ uint8_t res[4];
+} 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)
+{
+
+ static const uint8_t const_header[] = "TLOG";
+ logmap_t *t_log;
+ int16_t init_flag = 0;
+
+ t_log = (logmap_t *) RCAR_BL31_LOG_BASE;
+ if (memcmp
+ ((const void *)t_log->header.head, (const void *)const_header,
+ sizeof(t_log->header.head)) != 0) {
+ /*
+ * 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) {
+ (void)memset((void *)t_log->log_data, 0,
+ (size_t) RCAR_BL31_LOG_MAX);
+ (void)memcpy((void *)t_log->header.head,
+ (const void *)const_header,
+ sizeof(t_log->header.head));
+ t_log->header.index = 0U;
+ t_log->header.size = 0U;
+#ifndef IMAGE_BL2
+ rcar_stack_generic_timer[INDEX_TIMER_COUNT] = 0U;
+#endif
+ }
+ rcar_lock_init();
+
+ return 1;
+}