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/*
* 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
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