GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/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

source/trusted-firmware/trusted-firmware-a-2.8/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;
+}

source/trusted-firmware/trusted-firmware-a-2.8/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 */