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-rw-r--r--drivers/renesas/common/console/rcar_console.S93
-rw-r--r--drivers/renesas/common/console/rcar_printf.c108
-rw-r--r--drivers/renesas/common/console/rcar_printf.h15
3 files changed, 216 insertions, 0 deletions
diff --git a/drivers/renesas/common/console/rcar_console.S b/drivers/renesas/common/console/rcar_console.S
new file mode 100644
index 0000000..b683d7b
--- /dev/null
+++ b/drivers/renesas/common/console/rcar_console.S
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2018-2021, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <console_macros.S>
+#include <drivers/renesas/rcar/console/console.h>
+
+ .globl console_rcar_register
+ .globl console_rcar_init
+ .globl console_rcar_putc
+ .globl console_rcar_flush
+
+ .extern rcar_log_init
+ .extern rcar_set_log_data
+
+ /* -----------------------------------------------
+ * int console_rcar_register(
+ * uintptr_t base, uint32_t clk, uint32_t baud,
+ * console_t *console)
+ * Function to initialize and register a new rcar
+ * console. Storage passed in for the console struct
+ * *must* be persistent (i.e. not from the stack).
+ * In: x0 - UART register base address
+ * w1 - UART clock in Hz
+ * w2 - Baud rate
+ * x3 - pointer to empty console_t struct
+ * Out: return 1 on success, 0 on error
+ * Clobber list : x0, x1, x2, x6, x7, x14
+ * -----------------------------------------------
+ */
+func console_rcar_register
+ mov x7, x30
+ mov x6, x3
+ cbz x6, register_fail
+ str x0, [x6, #CONSOLE_T_BASE]
+
+ bl rcar_log_init
+ cbz x0, register_fail
+
+ mov x0, x6
+ mov x30, x7
+ finish_console_register rcar, putc=1, getc=0, flush=1
+
+register_fail:
+ ret x7
+endfunc console_rcar_register
+
+ /* ---------------------------------------------
+ * int console_rcar_init(unsigned long base_addr,
+ * unsigned int uart_clk, unsigned int baud_rate)
+ * Function to initialize the console without a
+ * C Runtime to print debug information. This
+ * function will be accessed by crash reporting.
+ * In: x0 - console base address
+ * w1 - Uart clock in Hz
+ * w2 - Baud rate
+ * Out: return 1 on success
+ * Clobber list : x1, x2
+ * ---------------------------------------------
+ */
+func console_rcar_init
+ mov w0, #1
+ ret
+endfunc console_rcar_init
+
+ /* --------------------------------------------------------
+ * int console_rcar_putc(int c, console_t *console)
+ * Function to output a character over the console. It
+ * returns the character printed on success or -1 on error.
+ * In : w0 - character to be printed
+ * x1 - pointer to console_t structure
+ * Out : return -1 on error else return character.
+ * Clobber list : x2
+ * --------------------------------------------------------
+ */
+func console_rcar_putc
+ b rcar_set_log_data
+endfunc console_rcar_putc
+
+ /* ---------------------------------------------
+ * void console_rcar_flush(void)
+ * Function to force a write of all buffered
+ * data that hasn't been output. It returns void
+ * Clobber list : x0, x1
+ * ---------------------------------------------
+ */
+func console_rcar_flush
+ ret
+endfunc console_rcar_flush
diff --git a/drivers/renesas/common/console/rcar_printf.c b/drivers/renesas/common/console/rcar_printf.c
new file mode 100644
index 0000000..ad074fe
--- /dev/null
+++ b/drivers/renesas/common/console/rcar_printf.c
@@ -0,0 +1,108 @@
+/*
+ * 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;
+}
diff --git a/drivers/renesas/common/console/rcar_printf.h b/drivers/renesas/common/console/rcar_printf.h
new file mode 100644
index 0000000..5da70e6
--- /dev/null
+++ b/drivers/renesas/common/console/rcar_printf.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2015-2019, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef RCAR_PRINTF_H
+#define RCAR_PRINTF_H
+
+#include <string.h>
+
+int32_t rcar_set_log_data(int32_t c);
+int32_t rcar_log_init(void);
+
+#endif /* RCAR_PRINTF_H */