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d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
55 lines
1.1 KiB
ArmAsm
55 lines
1.1 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* arch/arm/include/debug/8250.S
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*
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* Copyright (C) 1994-2013 Russell King
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*/
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#include <linux/serial_reg.h>
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.macro addruart, rp, rv, tmp
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ldr \rp, =CONFIG_DEBUG_UART_PHYS
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ldr \rv, =CONFIG_DEBUG_UART_VIRT
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.endm
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#ifdef CONFIG_DEBUG_UART_8250_WORD
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.macro store, rd, rx:vararg
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ARM_BE8(rev \rd, \rd)
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str \rd, \rx
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ARM_BE8(rev \rd, \rd)
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.endm
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.macro load, rd, rx:vararg
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ldr \rd, \rx
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ARM_BE8(rev \rd, \rd)
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.endm
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#else
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.macro store, rd, rx:vararg
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strb \rd, \rx
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.endm
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.macro load, rd, rx:vararg
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ldrb \rd, \rx
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.endm
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#endif
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#define UART_SHIFT CONFIG_DEBUG_UART_8250_SHIFT
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.macro senduart,rd,rx
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store \rd, [\rx, #UART_TX << UART_SHIFT]
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.endm
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.macro busyuart,rd,rx
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1002: load \rd, [\rx, #UART_LSR << UART_SHIFT]
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and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
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teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
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bne 1002b
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.endm
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.macro waituart,rd,rx
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#ifdef CONFIG_DEBUG_UART_8250_FLOW_CONTROL
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1001: load \rd, [\rx, #UART_MSR << UART_SHIFT]
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tst \rd, #UART_MSR_CTS
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beq 1001b
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#endif
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.endm
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