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Cleanup _doboot, fixing the 040 reboot bug.

This commit is contained in:
minoura 1998-09-07 14:14:34 +00:00
parent 16afbbecd6
commit 334656f748
1 changed files with 13 additions and 13 deletions
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26
sys/arch/x68k/x68k/locore.s
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@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.31 1998/08/05 16:08:38 minoura Exp $ */
/* $NetBSD: locore.s,v 1.32 1998/09/07 14:14:34 minoura Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -1905,9 +1905,14 @@ Lm68060fprdone:
*/
.globl _doboot
_doboot:
movw #PSL_HIGHIPL,sr | cut off any interrupts
subal a1,a1 | a1 = 0
moveq #0,d1 | d1 = 0
movl _mmutype,d2 | d2 = 0
movl #CACHE_OFF,d0
#if defined(M68040) || defined(M68060)
cmpl #MMU_68040,_mmutype | 68040?
cmpl #MMU_68040,d2 | 68040?
jne Ldoboot0 | no, skip
.word 0xf4f8 | cpusha bc - push and invalidate caches
nop
@ -1916,24 +1921,19 @@ Ldoboot0:
#endif
movc d0,cacr | disable on-chip cache(s)
movw #0x2700,sr | cut off any interrupts
| ok, turn off MMU..
Ldoreboot:
#if defined(M68040) || defined(M68060)
cmpl #MMU_68040,_mmutype | 68040?
cmpl #MMU_68040,d2 | 68040?
jne LmotommuF | no, skip
moveq #0,d0
movc d0,cacr | caches off
.long 0x4e7b0003 | movc d0,tc
moval 0x00ff0004:l,a0
jmp a0@ | reboot X680x0
movc d1,cacr | caches off
.long 0x4e7b1003 | movc d1(=0),tc ; disable MMU
jra Ldoreboot1
LmotommuF:
#endif
clrl sp@ | value for pmove to TC (turn off MMU)
movl d1,sp@
pmove sp@,tc | disable MMU
subal a1,a1
Ldoreboot1:
moveml 0x00ff0000,#0x0101 | get RESET vectors in ROM
| (d0: ssp, a0: pc)
moveml #0x0101,a1@ | put them at 0x0000 (for Xellent30)