patch-2.1.106 linux/arch/m68k/hp300/reboot.S

• Lines: 36
• Date: Sat Jun 13 13:14:31 1998
• Orig file: v2.1.105/linux/arch/m68k/hp300/reboot.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.105/linux/arch/m68k/hp300/reboot.S linux/arch/m68k/hp300/reboot.S
@@ -0,0 +1,35 @@
+/*
+ *  linux/arch/m68k/hp300/reboot.S
+ *
+ *  Copyright (C) 1998 Philip Blundell <philb@gnu.org>
+ *
+ *  Do the dirty work of rebooting the machine.  Basically we need to undo all the
+ *  good stuff that head.S did when we started up.  The caches and MMU must be
+ *  disabled and then we jump back to the PROM.  This is a bit gruesome but we put
+ *  a brave face on it.
+ */
+
+/* XXX Doesn't work yet.  Not sure why and can't be bothered to fix it at the moment. */
+
+	.globl	hp300_reset
+hp300_reset:
+	.chip	68030
+	oriw    #0x0700,%sr			/* cli() */
+	movel	hp300_phys_ram_base, %d1
+	movel	#0, %d0
+	movec	%d0, %vbr			/* reset vector table */
+	lea	zero, %a0
+	lea	1f, %a1
+	add	%d1, %a0
+	add	%d1, %a1
+	pmove	%tc, %a0@
+	bclr	#7, %a0@
+	pmove	%a0@, %tc			/* goodbye MMU */
+	jmp	%a1@
+1:	movel	#0x808, %d0
+	movec	%d0, %cacr			/* cache off */
+	moveb	#0, 0x1ffff
+	movel	#0x1a4, %a0
+	jmp	%a0@
+
+zero:	.quad	0