b51312bebf
Broadcom BCM63xx DSL SoCs have a different UART implementation for which we need specially crafted low-level debug assembly code to support. Add support for this using the standard definitions provided in include/linux/serial_bcm63xx.h (shared with their MIPS counterparts). Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
33 lines
748 B
ArmAsm
33 lines
748 B
ArmAsm
/*
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* Broadcom BCM63xx low-level UART debug
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*
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* Copyright (C) 2014 Broadcom Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/serial_bcm63xx.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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.macro senduart, rd, rx
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/* word access do not work */
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strb \rd, [\rx, #UART_FIFO_REG]
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.endm
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.macro waituart, rd, rx
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1001: ldr \rd, [\rx, #UART_IR_REG]
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tst \rd, #(1 << UART_IR_TXEMPTY)
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beq 1001b
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.endm
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.macro busyuart, rd, rx
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1002: ldr \rd, [\rx, #UART_IR_REG]
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tst \rd, #(1 << UART_IR_TXTRESH)
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beq 1002b
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.endm
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