| 0,0 → 1,72 |
|---|
| # |
| # Copyright (C) 2006 Martin Decky |
| # 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. |
| # |
| |
| #define INITIAL_STACK 0x0 |
| |
| #define PSTATE_IE_BIT 2 |
| |
| .register %g2, #scratch |
| .register %g3, #scratch |
| .register %g6, #scratch |
| .register %g7, #scratch |
| |
| .section BOOTSTRAP, "ax" |
| |
| .global start |
| start: |
| b 1f |
| nop |
| |
| /* |
| * 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 |
| |
| .align 8 |
| 1: |
| flushw |
| |
| /* |
| * Disable interrupts. |
| */ |
| rdpr %pstate, %g2 |
| and %g2, ~PSTATE_IE_BIT, %g2 ! mask the Interrupt Enable bit |
| wrpr %g2, 0, %pstate |
| |
| # TODO: set initial stack |
| |
| set ofw_cif, %l0 |
| |
| call init ! initialize OpenFirmware |
| stx %o4, [%l0] |
| |
| b bootstrap |
| nop |