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[PATCH] ARM: 2789/1: Enable access to both CP10 and CP11 on ARMv6

Patch from Catalin Marinas

The VFP instructions trigger undefined exceptions because the access to
CP11 is disabled (only CP10 is currently enabled by the kernel). The patch
fixes this problem.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas 20 anos atrás
pai
commit
d1d890edac
1 arquivos alterados com 1 adições e 1 exclusões
  1. 1 1
      arch/arm/mm/proc-v6.S

+ 1 - 1
arch/arm/mm/proc-v6.S

@@ -200,7 +200,7 @@ __v6_setup:
 	mcr	p15, 0, r4, c2, c0, 1		@ load TTB1
 	mcr	p15, 0, r4, c2, c0, 1		@ load TTB1
 #ifdef CONFIG_VFP
 #ifdef CONFIG_VFP
 	mrc	p15, 0, r0, c1, c0, 2
 	mrc	p15, 0, r0, c1, c0, 2
-	orr	r0, r0, #(3 << 20)
+	orr	r0, r0, #(0xf << 20)
 	mcr	p15, 0, r0, c1, c0, 2		@ Enable full access to VFP
 	mcr	p15, 0, r0, c1, c0, 2		@ Enable full access to VFP
 #endif
 #endif
 	mrc	p15, 0, r0, c1, c0, 0		@ read control register
 	mrc	p15, 0, r0, c1, c0, 0		@ read control register