svn commit: r193846 - head/sys/arm/arm

[Marcel Moolenaar]

Author: marcel
Date: Tue Jun  9 17:21:47 2009
New Revision: 193846
URL: http://svn.freebsd.org/changeset/base/193846

Log:
  Disable interrupts to allow booting on firmware (e.g. U-Boot) that
  has interrupts enabled and active.
  
  Obtained from:	Juniper Networks, Inc.

Modified:
  head/sys/arm/arm/locore.S

Modified: head/sys/arm/arm/locore.S
==============================================================================
--- head/sys/arm/arm/locore.S	Tue Jun  9 17:18:41 2009	(r193845)
+++ head/sys/arm/arm/locore.S	Tue Jun  9 17:21:47 2009	(r193846)
@@ -73,6 +73,11 @@ ASENTRY_NP(_start)
 
 	mov	ip, r0
 
+	/* Make sure interrupts are disabled. */
+	mrs	r7, cpsr
+	orr	r7, r7, #(I32_bit|F32_bit)
+	msr	cpsr_c, r7
+
 #if defined (FLASHADDR) && defined(LOADERRAMADDR)
 	/* Check if we're running from flash. */
 	ldr	r7, =FLASHADDR