1 /* *********************************************************************
2 * Broadcom Common Firmware Environment (CFE)
4 * Mini startup module for CFE apps File: minicrt0.S
6 * About the most minimal startup routine you can get.
8 * Author: Mitch Lichtenberg (mpl@broadcom.com)
10 *********************************************************************
12 * Copyright 2000,2001,2002,2003
13 * Broadcom Corporation. All rights reserved.
15 * This software is furnished under license and may be used and
16 * copied only in accordance with the following terms and
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19 * copies of this software in source and/or binary form. No title
20 * or ownership is transferred hereby.
22 * 1) Any source code used, modified or distributed must reproduce
23 * and retain this copyright notice and list of conditions
24 * as they appear in the source file.
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27 * logo of Broadcom Corporation. The "Broadcom Corporation"
28 * name may not be used to endorse or promote products derived
29 * from this software without the prior written permission of
30 * Broadcom Corporation.
32 * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
33 * IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
34 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
35 * PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
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37 * PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT,
38 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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40 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
41 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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45 ********************************************************************* */
51 * This module should be linked first!
54 #define STACK_SIZE 8192
57 .comm stack_bottom,STACK_SIZE
68 * Set up our GP (in case we're using it)
69 * Set up the stack pointer (don't use CFE's stack)
73 la sp,stack_bottom+STACK_SIZE-32
76 * Zero BSS. No need to do this very efficiently, do it
77 * 32 bits at a time to ensure we can compile this
89 * Jump to main program. Note that we didn't trash A0..A3,
90 * our application will need them. So, if you add stuff here,
91 * be sure to preserve the A0..A3 registers for the C code.