From e95c42c072124eda07ce686a4d48789eb13f00d0 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Wed, 30 Mar 1994 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1994-03-30

---
 carrera/l.s    | 3 +++
 carrera/main.c | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/carrera/l.s b/carrera/l.s
index df86841bf0539e1819e44c8c65c26a9d6be13f0b..c03eb17ec44020818165b3cd933bcb54f508540e 100644
--- a/carrera/l.s
+++ b/carrera/l.s
@@ -782,6 +782,9 @@ ccache:
 	BGTZ	R9, ccache
 	MOVW	R10, M(STATUS)
 	WAIT
+	MOVW	M(CONFIG), R1
+	OR	$((1<<4)|(1<<5)), R1
+	MOVW	R1, M(CONFIG)
 	RET
 	
 TEXT	getcallerpc(SB), $0
diff --git a/carrera/main.c b/carrera/main.c
index 118f48451fcd837c545be053d08bec1f27eddda1..9db41f092b64793de522c6d9be48128760a6b351 100644
--- a/carrera/main.c
+++ b/carrera/main.c
@@ -143,7 +143,7 @@ machinit(void)
 	clrfpintr();
 
 	/* scrub cache */
-	cleancache();
+	((void(*)(void))((ulong)cleancache|0xA0000000))();
 
 	memset(m, 0, sizeof(Mach));
 
@@ -209,7 +209,7 @@ ioinit(int mapeisa)
 	puttlbx(2, Intctlvirt, intphys, isamphys, PGSZ1M);
 
 	/* Enable all device interrupts */
-	IO(ushort, Intenareg) = 0xffff;
+	IO(ushort, Intenareg) = 0xfff7;
 
 	/* Map the rom back into Promvirt to allow NMI handling */
 	promphys = IOPTE|PPN(Promphys);