80 lines
2.3 KiB
ArmAsm
80 lines
2.3 KiB
ArmAsm
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/*
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* Copyright (c) 2018, ARM Limited and Contributors. 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 <asm_macros.S>
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.globl console_core_init
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.globl console_core_putc
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.globl console_core_getc
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.globl console_core_flush
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/* -----------------------------------------------------------------
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* int console_core_init(uintptr_t base_addr,
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* unsigned int uart_clk,
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* unsigned int baud_rate)
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*
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* Function to initialize the console without a C Runtime to print
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* debug information. This function will be accessed by console_init
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* and crash reporting.
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*
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* In: r0 - console base address
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* r1 - Uart clock in Hz
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* r2 - Baud rate
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* Out: return 1 on success else 0 on error
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* Clobber list : r1, r2, r3
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* -----------------------------------------------------------------
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*/
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func console_core_init
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bx lr
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endfunc console_core_init
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/* ---------------------------------------------------------------
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* int console_core_putc(int c, uintptr_t base_addr)
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*
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* Function to output a character over the console. It returns the
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* character printed on success or -1 on error.
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*
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* In : r0 - character to be printed
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* r1 - console base address
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* Out : return -1 on error else return character.
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* Clobber list : r2
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* ---------------------------------------------------------------
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*/
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func console_core_putc
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bx lr
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endfunc console_core_putc
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/* -----------------------------------------------------------
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* int console_core_getc(uintptr_t base_addr)
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*
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* Function to get a character from the console.
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* It returns the character grabbed on success or -1 on error.
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*
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* In : r0 - console base address
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* Out : return -1.
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* Clobber list : r0, r1
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* -----------------------------------------------------------
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*/
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func console_core_getc
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/* Not supported */
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mov r0, #-1
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bx lr
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endfunc console_core_getc
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/* ---------------------------------------------------------------
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* int console_core_flush(uintptr_t base_addr)
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*
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* Function to force a write of all buffered data that hasn't been
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* output.
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*
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* In : r0 - console base address
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* Out : return -1 on error else return 0.
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* Clobber list : r0, r1
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* ---------------------------------------------------------------
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*/
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func console_core_flush
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bx lr
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endfunc console_core_flush
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