From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from ns.lynxeye.de ([87.118.118.114] helo=lynxeye.de) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WzhQ0-0000D4-Jn for barebox@lists.infradead.org; Wed, 25 Jun 2014 07:14:57 +0000 From: Lucas Stach Date: Wed, 25 Jun 2014 09:18:18 +0200 Message-Id: <1403680701-10494-1-git-send-email-dev@lynxeye.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 1/4] arm: add errata workarounds To: barebox@lists.infradead.org From: Lucas Stach Header only implementation, so they can be pulled into the individual SoC cpu init functions. Signed-off-by: Lucas Stach --- arch/arm/include/asm/errata.h | 67 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 arch/arm/include/asm/errata.h diff --git a/arch/arm/include/asm/errata.h b/arch/arm/include/asm/errata.h new file mode 100644 index 0000000..e2ffd87 --- /dev/null +++ b/arch/arm/include/asm/errata.h @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2014 Lucas Stach, Pengutronix + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +static inline void enable_arm_errata_716044_war(void) +{ + __asm__ __volatile__ ( + "mrc p15, 0, r0, c1, c0, 0\n" + "orr r0, r0, #1 << 11\n" + "mcr p15, 0, r0, c1, c0, 0\n" + ); +} + +static inline void enable_arm_errata_742230_war(void) +{ + __asm__ __volatile__ ( + "mrc p15, 0, r0, c15, c0, 1\n" + "orr r0, r0, #1 << 4\n" + "mcr p15, 0, r0, c15, c0, 1\n" + ); +} + +static inline void enable_arm_errata_743622_war(void) +{ + __asm__ __volatile__ ( + "mrc p15, 0, r0, c15, c0, 1\n" + "orr r0, r0, #1 << 6\n" + "mcr p15, 0, r0, c15, c0, 1\n" + ); +} + +static inline void enable_arm_errata_751472_war(void) +{ + __asm__ __volatile__ ( + "mrc p15, 0, r0, c15, c0, 1\n" + "orr r0, r0, #1 << 11\n" + "mcr p15, 0, r0, c15, c0, 1\n" + ); +} + +static inline void enable_arm_errata_761320_war(void) +{ + __asm__ __volatile__ ( + "mrc p15, 0, r0, c15, c0, 1\n" + "orr r0, r0, #1 << 21\n" + "mcr p15, 0, r0, c15, c0, 1\n" + ); +} + +static inline void enable_arm_errata_794072_war(void) +{ + __asm__ __volatile__ ( + "mrc p15, 0, r0, c15, c0, 1\n" + "orr r0, r0, #1 << 4\n" + "mcr p15, 0, r0, c15, c0, 1\n" + ); +} -- 1.9.3 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox