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Use the only documented method to get the board data from the firmware.

This commit is contained in:
eeh 2003-08-18 21:30:51 +00:00
parent 6d211e7dbf
commit e898bed96b
1 changed files with 12 additions and 2 deletions
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14
sys/arch/evbppc/walnut/walnut_start.S
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@ -1,4 +1,4 @@
/* $NetBSD: walnut_start.S,v 1.9 2003/08/03 23:28:45 eeh Exp $ */
/* $NetBSD: walnut_start.S,v 1.10 2003/08/18 21:30:51 eeh Exp $ */
/* $OpenBSD: locore.S,v 1.4 1997/01/26 09:06:38 rahnds Exp $ */
/*
@ -90,6 +90,9 @@
#include <powerpc/ibm4xx/dcr405gp.h>
#include <powerpc/ibm4xx/pmap.h>
/* Function pointer for requesting board_config_data from openbios*/
#define BOARD_CFG_FP 0xFFFE0B50
/*
* Some instructions gas doesn't understand (yet?)
*/
@ -148,7 +151,14 @@ __start:
nop
1:
mflr %r31 /* Save address of PROM info_block */
/* Get the board_config_data from openbios */
lis %r3,BOARD_CFG_FP@h
ori %r3,%r3,BOARD_CFG_FP@l
lwz %r0,0x0(%r3)
mtctr %r0
bctrl /* call the xcoff function */
mr %r31,%r3 /* Save value in r31 */
li %r0,0
mtmsr %r0 /* Disable FPU/MMU/exceptions */
isync