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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>
32 lines
732 B
ArmAsm
32 lines
732 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2014 Carlo Caione
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* Carlo Caione <carlo@caione.org>
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*/
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#define MESON_AO_UART_WFIFO 0x0
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#define MESON_AO_UART_STATUS 0xc
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#define MESON_AO_UART_TX_FIFO_EMPTY (1 << 22)
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#define MESON_AO_UART_TX_FIFO_FULL (1 << 21)
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.macro addruart, rp, rv, tmp
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ldr \rp, =(CONFIG_DEBUG_UART_PHYS) @ physical
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ldr \rv, =(CONFIG_DEBUG_UART_VIRT) @ virtual
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.endm
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.macro senduart,rd,rx
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str \rd, [\rx, #MESON_AO_UART_WFIFO]
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.endm
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.macro busyuart,rd,rx
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1002: ldr \rd, [\rx, #MESON_AO_UART_STATUS]
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tst \rd, #MESON_AO_UART_TX_FIFO_EMPTY
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beq 1002b
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.endm
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.macro waituart,rd,rx
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1001: ldr \rd, [\rx, #MESON_AO_UART_STATUS]
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tst \rd, #MESON_AO_UART_TX_FIFO_FULL
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bne 1001b
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.endm
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