mirror of https://gitee.com/openkylin/linux.git
49 lines
1.2 KiB
ArmAsm
49 lines
1.2 KiB
ArmAsm
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/* linux/include/asm-arm/arch-iop3xx/debug-macro.S
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*
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* Debugging macro include header
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*
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* Copyright (C) 1994-1999 Russell King
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* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
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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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*/
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.macro addruart,rx
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mov \rx, #0xfe000000 @ physical
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#if defined(CONFIG_ARCH_IQ80321) || defined(CONFIG_ARCH_IQ31244)
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orr \rx, \rx, #0x00800000 @ location of the UART
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#elif defined(CONFIG_ARCH_IOP331)
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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moveq \rx, #0x000fe000 @ Physical Base
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movne \rx, #0
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orr \rx, \rx, #0xfe000000
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orr \rx, \rx, #0x00f00000 @ Virtual Base
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orr \rx, \rx, #0x00001700 @ location of the UART
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#else
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#error Unknown IOP3XX implementation
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#endif
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx]
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.endm
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.macro busyuart,rd,rx
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1002: ldrb \rd, [\rx, #0x5]
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and \rd, \rd, #0x60
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teq \rd, #0x60
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bne 1002b
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.endm
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.macro waituart,rd,rx
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#if !defined(CONFIG_ARCH_IQ80321) || !defined(CONFIG_ARCH_IQ31244) || !defined(CONFIG_ARCH_IQ80331)
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1001: ldrb \rd, [\rx, #0x6]
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tst \rd, #0x10
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beq 1001b
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#endif
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.endm
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