forked from luck/tmp_suning_uos_patched
b54942f820
The AT91x40 family doesn't have the debug unit like its bigger brothers. But it does have the ID and extension registers (with the bit meanings the same). Reorganize at91_dbgu.h to cater for this. This also affects the load uncompressor, since it outputs to the debug port. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/*
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* include/asm-arm/arch-at91/uncompress.h
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*
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* Copyright (C) 2003 SAN People
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __ASM_ARCH_UNCOMPRESS_H
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#define __ASM_ARCH_UNCOMPRESS_H
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#include <asm/io.h>
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#include <asm/arch/at91_dbgu.h>
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/*
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* The following code assumes the serial port has already been
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* initialized by the bootloader. If you didn't setup a port in
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* your bootloader then nothing will appear (which might be desired).
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*
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* This does not append a newline
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*/
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static void putc(int c)
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{
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#ifdef AT91_DBGU
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void __iomem *sys = (void __iomem *) AT91_BASE_SYS; /* physical address */
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while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXRDY))
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barrier();
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__raw_writel(c, sys + AT91_DBGU_THR);
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#endif
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}
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static inline void flush(void)
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{
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#ifdef AT91_DBGU
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void __iomem *sys = (void __iomem *) AT91_BASE_SYS; /* physical address */
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/* wait for transmission to complete */
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while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXEMPTY))
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barrier();
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#endif
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}
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#define arch_decomp_setup()
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#define arch_decomp_wdog()
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#endif
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