21f47fbc5b
This adds support for the family of Systems-on-Chip produced initially by VIA and now its subsidiary WonderMedia that have recently become widespread in lower-end Chinese ARM-based tablets and netbooks. Support is included for both VT8500 and WM8505, selectable by a configuration switch at kernel build time. Included are basic machine initialization files, register and interrupt definitions, support for the on-chip interrupt controller, high-precision OS timer, GPIO lines, necessary macros for early debug, pulse-width-modulated outputs control, as well as platform device configurations for the specific drivers implemented elsewhere. Signed-off-by: Alexey Charkov <alchark@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
31 lines
636 B
ArmAsm
31 lines
636 B
ArmAsm
/*
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* arch/arm/mach-vt8500/include/mach/debug-macro.S
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*
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* Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
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*
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* Debugging macro include header
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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, rp, rv
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mov \rp, #0x00200000
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orr \rv, \rp, #0xf8000000
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orr \rp, \rp, #0xd8000000
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.endm
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.macro senduart,rd,rx
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strb \rd, [\rx, #0]
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.endm
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.macro busyuart,rd,rx
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1001: ldr \rd, [\rx, #0x1c]
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ands \rd, \rd, #0x2
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bne 1001b
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.endm
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.macro waituart,rd,rx
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.endm
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