ae78672c56
o Use a directory layout that is more akin to the i386 boot layout. o Create a libat91 for library routines that are used by one or more of the boot loaders. o Create bootiic for booting from an iic part. o Create bootspi for booting from an spi part. o Optimize the size of many of these routines (especially emac.c). Except for the emac.c optimizations, all these have been tested. o eliminate the inc directory, libat91 superceeds it. o Move linker.cfg up a layer to allow it to be shared.
55 lines
2.1 KiB
C
55 lines
2.1 KiB
C
/*-
|
|
* Copyright (c) 2006 M. Warner Losh. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* This software is derived from software provided by kwikbyte without
|
|
* copyright as follows:
|
|
*
|
|
* No warranty, expressed or implied, is included with this software. It is
|
|
* provided "AS IS" and no warranty of any kind including statutory or aspects
|
|
* relating to merchantability or fitness for any purpose is provided. All
|
|
* intellectual property rights of others is maintained with the respective
|
|
* owners. This software is not copyrighted and is intended for reference
|
|
* only.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include "at91rm9200.h"
|
|
#include "at91rm9200_lowlevel.h"
|
|
#include "lib.h"
|
|
|
|
/*
|
|
* void putchar(int ch)
|
|
* Writes a character to the DBGU port. It assumes that DBGU has
|
|
* already been initialized.
|
|
*/
|
|
void
|
|
putchar(int ch)
|
|
{
|
|
AT91PS_USART pUSART = (AT91PS_USART)AT91C_BASE_DBGU;
|
|
|
|
while (!(pUSART->US_CSR & AT91C_US_TXRDY))
|
|
continue;
|
|
pUSART->US_THR = (ch & 0xFF);
|
|
}
|