ARM: 6203/1: Make VFPv3 usable on ARMv6
authorTony Lindgren <tony@atomide.com>
Thu, 1 Jul 2010 12:41:05 +0000 (13:41 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Fri, 9 Jul 2010 13:41:34 +0000 (14:41 +0100)
commit5aaf254409f8d58229107b59507a8235b715a960
tree30b3a289808a34a1db28a0eb6d92bc160be3bc0c
parente513f8bf240d34bd6e732ba2f74df9ab84686ce6
ARM: 6203/1: Make VFPv3 usable on ARMv6

MVFR0 and MVFR1 are only available starting with ARM1136 r1p0 release
according to "B.5 VFP changes" in DDI0211F_arm1136_r1p0_trm.pdf. This is
also when TLS register got added, so we can use HAS_TLS also to test for
MVFR0 and MVFR1.

Otherwise VFPFMRX and VFPFMXR access fails and we get:

Internal error: Oops - undefined instruction: 0 [#1]
PC is at no_old_VFP_process+0x8/0x3c
LR is at __und_svc+0x48/0x80
...

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/include/asm/vfpmacros.h
arch/arm/vfp/vfpmodule.c