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Preserve OpenFirmware's msr and use it in openfirmware().

This commit is contained in:
tsubai 1998-07-21 17:53:50 +00:00
parent 49bb9d8214
commit 0f572b1caa
1 changed files with 10 additions and 5 deletions
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15
sys/arch/macppc/macppc/locore.S
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@ -1,4 +1,4 @@
/* $NetBSD: locore.S,v 1.4 1998/07/04 22:18:30 jonathan Exp $ */ /* $NetBSD: locore.S,v 1.5 1998/07/21 17:53:50 tsubai Exp $ */
/* /*
* Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -77,12 +77,12 @@ GLOBAL(eintrcnt)
/* /*
* File-scope for locore.S * File-scope for locore.S
*/ */
.data
idle_u: idle_u:
.long 0 /* fake uarea during idle after exit */ .long 0 /* fake uarea during idle after exit */
.globl openfirmware_entry
openfirmware_entry: openfirmware_entry:
.long 0 /* openfirmware entry point */ .long 0 /* openfirmware entry point */
ofw_msr:
.long 0 /* msr used in OpenFirmware */
/* /*
* This symbol is here for the benefit of kvm_mkdb, and is supposed to * This symbol is here for the benefit of kvm_mkdb, and is supposed to
@ -107,6 +107,10 @@ __start:
bl _C_LABEL(ofwr_init) bl _C_LABEL(ofwr_init)
1: 1:
#endif #endif
mfmsr 0
lis 9,ofw_msr@ha
stw 0,ofw_msr@l(9)
li 0,0 li 0,0
mtmsr 0 /* Disable FPU/MMU/exceptions */ mtmsr 0 /* Disable FPU/MMU/exceptions */
isync isync
@ -159,8 +163,9 @@ ENTRY(openfirmware)
lwz 4,openfirmware_entry@l(4) lwz 4,openfirmware_entry@l(4)
mtlr 4 mtlr 4
li 0,PSL_IR|PSL_DR /* turn on MMU */ lis 4,ofw_msr@ha /* OpenFirmware msr */
mtmsr 0 lwz 4,ofw_msr@l(4)
mtmsr 4
isync isync
blrl /* call OpenFirmware */ blrl /* call OpenFirmware */