mirror of https://gitee.com/openkylin/linux.git
39 lines
1.0 KiB
ArmAsm
39 lines
1.0 KiB
ArmAsm
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/*
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* include/asm-arm/arch-ks8695/debug-macro.S
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*
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* Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk>
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* Copyright (C) 2006 Simtec Electronics
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*
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* KS8695 - Debug macros
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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 <asm/hardware.h>
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#include <asm/arch/regs-uart.h>
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.macro addruart, rx
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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ldreq \rx, =KS8695_UART_PA @ physical base address
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ldrne \rx, =KS8695_UART_VA @ virtual base address
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.endm
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.macro senduart, rd, rx
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str \rd, [\rx, #KS8695_URTH] @ Write to Transmit Holding Register
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.endm
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.macro busyuart, rd, rx
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1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
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tst \rd, #URLS_URTE @ Holding & Shift registers empty?
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beq 1001b
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.endm
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.macro waituart, rd, rx
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1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
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tst \rd, #URLS_URTHRE @ Holding Register empty?
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beq 1001b
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.endm
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