virt68k/68030 problem

[Tetsuya Isaki <isaki%pastel-flower.jp@localhost>]

Hello,

virt68k started to boot on my 68030 emulator (not qemu).
But it does not set TT register for I/O space in 68030 case,
So that it lost console output just after mmu enabled.
The attached patch solves this issue.
The WIP screen shot is https://misskey.io/notes/9olbbm9b1hg00cuy

May I commit it? (or would you take?)
---
Tetsuya Isaki <isaki%pastel-flower.jp@localhost / isaki%NetBSD.org@localhost>

Index: sys/arch/virt68k/virt68k/locore.s
===================================================================
RCS file: /cvsroot/src/sys/arch/virt68k/virt68k/locore.s,v
retrieving revision 1.9
diff -u -r1.9 locore.s
--- sys/arch/virt68k/virt68k/locore.s	13 Jan 2024 17:10:58 -0000	1.9
+++ sys/arch/virt68k/virt68k/locore.s	17 Jan 2024 13:04:00 -0000
@@ -199,8 +199,13 @@
 	jmp	Lenab1
 
 Lmotommu2:
+	movl	#VIRT68K_TT30_IO,%sp@-	| TT0 maps the I/O space
+	.long	0xf0170800		| pmove %sp@,mmutt0
+	clrl	%sp@			| ensure TT1 is disabled
+	.long	0xf0170c00		| pmove %sp@,mmutt1
+
 	pflusha
-	movl	#MMU51_TCR_BITS,%sp@-	| value to load TC with
+	movl	#MMU51_TCR_BITS,%sp@	| value to load TC with
 	pmove	%sp@,%tc		| load it
 
 /*