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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 1/4] ARM startup: Ensure CR_A flag is cleared on architectures >= ARMv6
Date: Sat,  8 Dec 2012 17:58:19 +0100	[thread overview]
Message-ID: <1354985902-11317-2-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1354985902-11317-1-git-send-email-s.hauer@pengutronix.de>

We allow unaligned accesses on ARMv6 onwards, make sure the CR_A
flag is cleared so that unaligned accesses do not trap.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/include/asm/barebox-arm-head.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/include/asm/barebox-arm-head.h b/arch/arm/include/asm/barebox-arm-head.h
index eafad4e..bf00ff0 100644
--- a/arch/arm/include/asm/barebox-arm-head.h
+++ b/arch/arm/include/asm/barebox-arm-head.h
@@ -22,6 +22,7 @@ static inline void common_reset(void)
 
 #if __LINUX_ARM_ARCH__ >= 6
 	r |= CR_U;
+	r &= CR_A;
 #else
 	r |= CR_A;
 #endif
@@ -91,6 +92,7 @@ static inline void barebox_arm_head(void)
 
 #if __LINUX_ARM_ARCH__ >= 6
 	orr	\scratch, \scratch, #CR_U
+	bic	\scratch, \scratch, #CR_A
 #else
 	orr	\scratch, \scratch, #CR_A
 #endif
-- 
1.7.10.4


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  reply	other threads:[~2012-12-08 16:58 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-08 16:58 [PATCH] fixes Sascha Hauer
2012-12-08 16:58 ` Sascha Hauer [this message]
2012-12-08 16:58 ` [PATCH 2/4] ARM omap3: Call common_reset Sascha Hauer
2012-12-08 16:58 ` [PATCH 3/4] net phylib: Clear BMCR_PDOWN bit Sascha Hauer
2012-12-08 16:58 ` [PATCH 4/4] net phylib: Call phy_update_status when no link is present Sascha Hauer

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