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Allow detection of VFP devices on ARM11 cores.

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This commit is contained in:
rearnsha 2008-03-15 10:35:30 +00:00
parent 667f59c8dd
commit d14160690e
1 changed files with 5 additions and 2 deletions
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7
sys/arch/arm/arm/cpufunc.c
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@ -1,4 +1,4 @@
/* $NetBSD: cpufunc.c,v 1.82 2008/02/24 20:50:38 matt Exp $ */
/* $NetBSD: cpufunc.c,v 1.83 2008/03/15 10:35:30 rearnsha Exp $ */
/*
* arm7tdmi support code Copyright (c) 2001 John Fremlin
@ -46,7 +46,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cpufunc.c,v 1.82 2008/02/24 20:50:38 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: cpufunc.c,v 1.83 2008/03/15 10:35:30 rearnsha Exp $");
#include "opt_compat_netbsd.h"
#include "opt_cpuoptions.h"
@ -2257,6 +2257,9 @@ arm11_setup(args)
/* Now really make sure they are clean. */
__asm volatile ("mcr\tp15, 0, r0, c7, c7, 0" : : );
/* Allow detection code to find the VFP if it's fitted. */
__asm volatile ("mcr\tp15, 0, %0, c1, c0, 2" : : "r" (0x0fffffff));
/* Set the control register */
curcpu()->ci_ctrl = cpuctrl;
cpu_control(0xffffffff, cpuctrl);