0,0 → 1,84 |
# |
# Copyright (c) 2006 Martin Decky |
# Copyright (c) 2006 Jakub Jermar |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - 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. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# 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. |
# |
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#include <stack.h> |
#include <register.h> |
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#define INITIAL_STACK_SIZE 8192 |
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#define NWINDOWS 8 |
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.register %g2, #scratch |
.register %g3, #scratch |
.register %g6, #scratch |
.register %g7, #scratch |
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.section BOOTSTRAP, "ax" |
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.global start |
start: |
b 1f |
nop |
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/* |
* This header forces SILO to load the image at 0x4000. |
* More precisely, SILO will think this is an old version of Linux. |
*/ |
.ascii "HdrS" |
.word 0 |
.half 0 |
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.align 8 |
1: |
/* |
* Disable interrupts and disable address masking. |
*/ |
wrpr %g0, PSTATE_PRIV_BIT, %pstate |
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wrpr %g0, NWINDOWS - 2, %cansave ! set maximum saveable windows |
wrpr %g0, 0, %canrestore ! get rid of windows we will never need again |
wrpr %g0, 0, %otherwin ! make sure the window state is consistent |
wrpr %g0, NWINDOWS - 1, %cleanwin ! prevent needless clean_window traps for kernel |
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set initial_stack_top, %sp |
add %sp, -STACK_BIAS, %sp |
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set ofw_cif, %l0 |
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call ofw_init ! initialize OpenFirmware |
stx %o4, [%l0] |
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b bootstrap |
nop |
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.align STACK_ALIGNMENT |
initial_stack: |
.space INITIAL_STACK_SIZE |
initial_stack_top: |
.space STACK_WINDOW_SAVE_AREA_SIZE |