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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>
43 lines
931 B
ArmAsm
43 lines
931 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2013 Pengutronix
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* Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
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*/
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#define UARTn_CMD 0x000c
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#define UARTn_CMD_TXEN 0x0004
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#define UARTn_STATUS 0x0010
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#define UARTn_STATUS_TXC 0x0020
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#define UARTn_STATUS_TXBL 0x0040
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#define UARTn_TXDATA 0x0034
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.macro addruart, rx, tmp, tmp2
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ldr \rx, =(CONFIG_DEBUG_UART_PHYS)
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/*
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* enable TX. The driver might disable it to save energy. We
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* don't care about disabling at the end as during debug power
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* consumption isn't that important.
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*/
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ldr \tmp, =(UARTn_CMD_TXEN)
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str \tmp, [\rx, #UARTn_CMD]
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx, #UARTn_TXDATA]
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.endm
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.macro waituart,rd,rx
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1001: ldr \rd, [\rx, #UARTn_STATUS]
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tst \rd, #UARTn_STATUS_TXBL
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beq 1001b
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.endm
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.macro busyuart,rd,rx
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1001: ldr \rd, [\rx, UARTn_STATUS]
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tst \rd, #UARTn_STATUS_TXC
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bne 1001b
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.endm
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