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831b0e9824
And from crash_console_flush. We ignore the error information return by console_flush in _every_ place where we call it, and casting the return type to void does not work around the MISRA violation that this causes. Instead, we collect the error information from the driver (to avoid changing that API), and don't return it to the caller. Change-Id: I1e35afe01764d5c8f0efd04f8949d333ffb688c1 Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
93 lines
2.6 KiB
ArmAsm
93 lines
2.6 KiB
ArmAsm
/*
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* Copyright (c) 2018-2019, Renesas Electronics Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <arch.h>
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#include <asm_macros.S>
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#include <console_macros.S>
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#include <drivers/renesas/rcar/console/console.h>
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.globl console_rcar_register
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.globl console_rcar_init
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.globl console_rcar_putc
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.globl console_rcar_flush
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.extern rcar_log_init
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.extern rcar_set_log_data
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/* -----------------------------------------------
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* int console_rcar_register(
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* uintptr_t base, uint32_t clk, uint32_t baud,
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* console_t *console)
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* Function to initialize and register a new rcar
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* console. Storage passed in for the console struct
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* *must* be persistent (i.e. not from the stack).
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* In: x0 - UART register base address
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* w1 - UART clock in Hz
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* w2 - Baud rate
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* x3 - pointer to empty console_t struct
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* Out: return 1 on success, 0 on error
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* Clobber list : x0, x1, x2, x6, x7, x14
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* -----------------------------------------------
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*/
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func console_rcar_register
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mov x7, x30
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mov x6, x3
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cbz x6, register_fail
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str x0, [x6, #CONSOLE_T_BASE]
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bl rcar_log_init
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cbz x0, register_fail
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mov x0, x6
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mov x30, x7
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finish_console_register rcar, putc=1, getc=0, flush=1
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register_fail:
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ret x7
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endfunc console_rcar_register
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/* ---------------------------------------------
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* int console_rcar_init(unsigned long base_addr,
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* unsigned int uart_clk, unsigned int baud_rate)
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* Function to initialize the console without a
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* C Runtime to print debug information. This
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* function will be accessed by crash reporting.
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* In: x0 - console base address
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* w1 - Uart clock in Hz
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* w2 - Baud rate
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* Out: return 1 on success
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* Clobber list : x1, x2
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* ---------------------------------------------
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*/
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func console_rcar_init
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mov w0, #0
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ret
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endfunc console_rcar_init
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/* --------------------------------------------------------
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* int console_rcar_putc(int c, console_t *console)
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* Function to output a character over the console. It
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* returns the character printed on success or -1 on error.
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* In : w0 - character to be printed
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* x1 - pointer to console_t structure
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* Out : return -1 on error else return character.
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* Clobber list : x2
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* --------------------------------------------------------
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*/
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func console_rcar_putc
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b rcar_set_log_data
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endfunc console_rcar_putc
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/* ---------------------------------------------
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* void console_rcar_flush(void)
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* Function to force a write of all buffered
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* data that hasn't been output. It returns void
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* Clobber list : x0, x1
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* ---------------------------------------------
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*/
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func console_rcar_flush
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ret
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endfunc console_rcar_flush
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