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1018 decky 1
#
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# Copyright (c) 2006 Martin Decky
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# - Redistributions of source code must retain the above copyright
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#   notice, this list of conditions and the following disclaimer.
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# - Redistributions in binary form must reproduce the above copyright
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#   notice, this list of conditions and the following disclaimer in the
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#   documentation and/or other materials provided with the distribution.
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# - The name of the author may not be used to endorse or promote products
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#   derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#include "regname.h"
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#include "main.h"
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.set noat
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.set noreorder
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.set nomacro
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.section BOOTSTRAP
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.global start
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start:
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	/* Setup CPU map (on msim this code
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	   is executed in parallel on all CPUs,
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	   but it not an issue) */
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	la $a0, CPUMAP
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	sw $zero, 0($a0)
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	sw $zero, 4($a0)
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	sw $zero, 8($a0)
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	sw $zero, 12($a0)
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	sw $zero, 16($a0)
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	sw $zero, 20($a0)
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	sw $zero, 24($a0)
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	sw $zero, 28($a0)
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	sw $zero, 32($a0)
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	sw $zero, 36($a0)
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	sw $zero, 40($a0)
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	sw $zero, 44($a0)
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	sw $zero, 48($a0)
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	sw $zero, 52($a0)
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	sw $zero, 56($a0)
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	sw $zero, 60($a0)
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	sw $zero, 64($a0)
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	sw $zero, 68($a0)
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	sw $zero, 72($a0)
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	sw $zero, 76($a0)
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	sw $zero, 80($a0)
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	sw $zero, 84($a0)
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	sw $zero, 88($a0)
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	sw $zero, 92($a0)
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	sw $zero, 96($a0)
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	sw $zero, 100($a0)
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	sw $zero, 104($a0)
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	sw $zero, 108($a0)
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	sw $zero, 112($a0)
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	sw $zero, 116($a0)
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	sw $zero, 120($a0)
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	sw $zero, 124($a0)
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	lui $a1, 1
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#ifdef MACHINE_msim
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	/* Read dorder value */
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	la $k0, MSIM_DORDER_ADDRESS
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	lw $k1, ($k0)
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	/* If we are not running on BSP
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	   then end in an infinite loop  */
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	beq $k1, $zero, bsp
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	nop
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	/* Record CPU presence */
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	sll $a2, $k1, 2
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	addu $a2, $a2, $a0
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	sw $a1, ($a2)
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	loop:
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		j loop
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		nop
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#endif
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	bsp:
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		/* Record CPU presence */
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		sw $a1, ($a0)
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		/* Setup initial stack */
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		la $sp, INITIAL_STACK
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		j bootstrap
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		nop