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  • Committer: Phil Dennis-Jordan
  • Date: 2017-07-21 08:03:43 UTC
  • mfrom: (1.1.1)
  • Revision ID: phil@philjordan.eu-20170721080343-2yr2vdj7713czahv
New upstream release 2.9.0.

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roms/SLOF/slof/lowmem.S
 
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/******************************************************************************
 
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 * Copyright (c) 2004, 2008 IBM Corporation
 
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 * All rights reserved.
 
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 * This program and the accompanying materials
 
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 * are made available under the terms of the BSD License
 
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 * which accompanies this distribution, and is available at
 
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 * http://www.opensource.org/licenses/bsd-license.php
 
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 *
 
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 * Contributors:
 
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 *     IBM Corporation - initial implementation
 
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 *****************************************************************************/
 
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#include <cpu.h>
 
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#include <xvect.h>
 
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        .globl _start
 
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        /* All exception vectors *******************/
 
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_start:
 
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        .org 0x100
 
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        /* check if Master / Slave *****************/
 
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        /* Master will go to XVECT_M_HANDLER       */
 
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        /* Slave  will go to XVECT_S_HANDLER       */
 
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#ifdef SECONDARY_CPUS_STOPPED
 
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        ld      r3,XVECT_S_HANDLER(0)
 
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        mfspr   r0, PIR
 
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        cmpwi   r0, 0
 
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        bne     0f
 
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#endif
 
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        ld      r3,XVECT_M_HANDLER(0)
 
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0:
 
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        mtctr   r3
 
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        li      r0,0x100
 
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        bctr
 
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        /* FIXME: Also need 0280, 0380, 0f20, etc. */
 
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        .irp i, 0x0200,0x0280,0x0300,0x0380,0x0400,0x0480,0x0500,0x0600,0x0700, \
 
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                0x0800,0x0900,0x0a00,0x0b00,0x0c00,0x0d00,0x0e00,0x0f00, \
 
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                0x1000,0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,0x1700, \
 
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                0x1800,0x1900,0x1a00,0x1b00,0x1c00,0x1d00,0x1e00,0x1f00, \
 
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                0x2000,0x2100,0x2200,0x2300,0x2400,0x2500,0x2600,0x2700, \
 
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                0x2800,0x2900,0x2a00,0x2b00,0x2c00,0x2d00,0x2e00,0x2f00
 
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        .org \i
 
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        /* enable this if you get exceptions before the console works    */
 
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        /* this will allow using the hardware debugger to see where      */
 
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        /* it traps, and with what register values etc.                  */
 
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        // b    $
 
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        mtsprg  0,r0
 
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        mfctr   r0
 
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        mtsprg  2,r0
 
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        mflr    r0
 
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        mtsprg  3,r0
 
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        ld      r0, XVECT_M_HANDLER(0)
 
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        mtctr   r0
 
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        li      r0,\i
 
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        bctr
 
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        .endr
 
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        .org XVECT_M_HANDLER
 
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        .quad 0
 
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        .org XVECT_S_HANDLER
 
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        .quad 0
 
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        .org XVECT_TOPADDR
 
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        .byte 0x36              # to fill out to exactly 16kB