diff options
Diffstat (limited to 'drivers/renesas/common/console')
| -rw-r--r-- | drivers/renesas/common/console/rcar_console.S | 93 | ||||
| -rw-r--r-- | drivers/renesas/common/console/rcar_printf.c | 108 | ||||
| -rw-r--r-- | drivers/renesas/common/console/rcar_printf.h | 15 |
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 */ |