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jeremybenn |
/* cfe.c -- I/O code for the MIPS boards running CFE. */
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/*
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* Copyright 2001, 2002, 2003
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* Broadcom Corporation. All rights reserved.
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*
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* This software is furnished under license and may be used and copied only
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* in accordance with the following terms and conditions. Subject to these
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* conditions, you may download, copy, install, use, modify and distribute
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* modified or unmodified copies of this software in source and/or binary
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* form. No title or ownership is transferred hereby.
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*
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* 1) Any source code used, modified or distributed must reproduce and
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* retain this copyright notice and list of conditions as they appear in
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* the source file.
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*
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* 2) No right is granted to use any trade name, trademark, or logo of
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* Broadcom Corporation. The "Broadcom Corporation" name may not be
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* used to endorse or promote products derived from this software
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* without the prior written permission of Broadcom Corporation.
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*
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* 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
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* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
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* FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
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* LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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*/
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#include "cfe_api.h"
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void *__libcfe_init (long handle, long a1, long cfe_entrypoint, long a3);
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void __libcfe_exit (long status);
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char inbyte (void);
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int outbyte (char c);
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/* Echo input characters? */
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int __libcfe_echo_input = 0;
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/* CFE handle used to access console device. */
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static int cfe_conshandle;
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/* Initialize firmware callbacks. Called from crt0_cfe. Returns desired
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stack pointer. */
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void *
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__libcfe_init (long handle, long a1, long entrypoint, long a3)
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{
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cfe_init (handle, entrypoint);
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cfe_conshandle = cfe_getstdhandle (CFE_STDHANDLE_CONSOLE);
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__libcfe_meminit ();
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return __libcfe_stack_top ();
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}
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/* Exit back to monitor, with the given status code. */
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void
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__libcfe_exit (long status)
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{
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outbyte ('\r');
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outbyte ('\n');
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cfe_exit (CFE_FLG_WARMSTART, status);
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}
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char
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inbyte (void)
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{
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unsigned char c;
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int rv;
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while (cfe_read (cfe_conshandle, &c, 1) != 1)
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;
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if (c == '\r')
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c = '\n';
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if (__libcfe_echo_input)
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outbyte (c);
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return c;
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}
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int
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outbyte (char c)
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{
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int res;
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do
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{
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res = cfe_write (cfe_conshandle, &c, 1);
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}
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while (res == 0);
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if (c == '\n')
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outbyte ('\r');
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return 0;
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}
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/* This is the MIPS cache flush function call. No defines are provided
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by libgloss for 'cache', and CFE doesn't let you flush ranges, so
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we just flush all I & D for every call. */
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int
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_flush_cache (char *addr, int nbytes, int cache)
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{
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cfe_flushcache (0);
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return 0;
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}
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