From ba94a1bba3600d387edba7eb451990d9891e1c2f Mon Sep 17 00:00:00 2001
From: Wolfgang Denk <wd@castor.denx.de>
Date: Tue, 30 May 2006 15:56:48 +0200
Subject: * Update Intel IXP4xx support - Add IXP4xx NPE ethernet MAC support -
 Add support for Intel IXDPG425 board - Add support for Prodrive PDNB3 board -
 Add IRQ support Patch by Stefan Roese, 23 May 2006

[This patch does not include cpu/ixp/npe/IxNpeMicrocode.c which still
 sufferes from licensing issues. Blame Intel.]
---
 cpu/ixp/start.S | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

(limited to 'cpu/ixp/start.S')

diff --git a/cpu/ixp/start.S b/cpu/ixp/start.S
index 2726f65978..757cfaa2d5 100644
--- a/cpu/ixp/start.S
+++ b/cpu/ixp/start.S
@@ -211,7 +211,7 @@ reset:
 	/* copy */
 	mov     r0, #0
 	mov     r4, r0
-	add     r2, r0, #0x40000
+	add     r2, r0, #CFG_MONITOR_LEN
 	mov     r1, #0x10000000
 	mov     r5, r1
 
@@ -497,3 +497,29 @@ reset_cpu:
 reset_endless:
 
 	b	reset_endless
+
+#ifdef CONFIG_USE_IRQ
+
+.LC0:		.word	loops_per_jiffy
+
+/*
+ * 0 <= r0 <= 2000
+ */
+.globl udelay
+udelay:
+	mov	r2,     #0x6800
+	orr	r2, r2, #0x00db
+	mul	r0, r2, r0
+	ldr	r2, .LC0
+	ldr	r2, [r2]		@ max = 0x0fffffff
+	mov	r0, r0, lsr #11		@ max = 0x00003fff
+	mov	r2, r2, lsr #11		@ max = 0x0003ffff
+	mul	r0, r2, r0		@ max = 2^32-1
+	movs	r0, r0, lsr #6
+
+delay_loop:
+	subs	r0, r0, #1
+	bne	delay_loop
+	mov	pc, lr
+
+#endif /* CONFIG_USE_IRQ */
-- 
cgit v1.2.1