From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wy0-f177.google.com ([74.125.82.177]) by canuck.infradead.org with esmtps (Exim 4.72 #1 (Red Hat Linux)) id 1PvHUa-0003OY-Hy for barebox@lists.infradead.org; Thu, 03 Mar 2011 22:59:42 +0000 Received: by mail-wy0-f177.google.com with SMTP id 23so1676066wyf.36 for ; Thu, 03 Mar 2011 14:59:32 -0800 (PST) From: franck.jullien@gmail.com Date: Thu, 3 Mar 2011 23:59:06 +0100 Message-Id: <4d701d53.9009d80a.2cd3.5eab@mx.google.com> In-Reply-To: References: 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-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 52/54] Add arch/nios2/include/asm/system.h To: barebox@lists.infradead.org From: Franck JULLIEN Add arch/nios2/include/asm/system.h --- arch/nios2/include/asm/system.h | 64 +++++++++++++++++++++++++++++++++++++++ 1 files changed, 64 insertions(+), 0 deletions(-) create mode 100644 arch/nios2/include/asm/system.h diff --git a/arch/nios2/include/asm/system.h b/arch/nios2/include/asm/system.h new file mode 100644 index 0000000..086d92b --- /dev/null +++ b/arch/nios2/include/asm/system.h @@ -0,0 +1,64 @@ +/* + * (C) Copyright 2004, Psyent Corporation + * Scott McNutt + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#ifndef __ASM_NIOS2_SYSTEM_H_ +#define __ASM_NIOS2_SYSTEM_H_ + +#define local_irq_enable() __asm__ __volatile__ ( \ + "rdctl r8, status\n" \ + "ori r8, r8, 1\n" \ + "wrctl status, r8\n" \ + : : : "r8") + +#define local_irq_disable() __asm__ __volatile__ ( \ + "rdctl r8, status\n" \ + "andi r8, r8, 0xfffe\n" \ + "wrctl status, r8\n" \ + : : : "r8") + +#define local_save_flags(x) __asm__ __volatile__ ( \ + "rdctl r8, status\n" \ + "mov %0, r8\n" \ + : "=r" (x) : : "r8", "memory") + +#define local_irq_restore(x) __asm__ __volatile__ ( \ + "mov r8, %0\n" \ + "wrctl status, r8\n" \ + : : "r" (x) : "r8", "memory") + +/* For spinlocks etc */ +#define local_irq_save(x) do { local_save_flags(x); local_irq_disable(); } \ + while (0) + +#define irqs_disabled() \ +({ \ + unsigned long flags; \ + local_save_flags(flags); \ + ((flags & NIOS2_STATUS_PIE_MSK) == 0x0); \ +}) + +/* indirect call to go beyond 256MB limitation of toolchain */ +#define nios2_callr(addr) __asm__ __volatile__ ( \ + "callr %0" \ + : : "r" (addr)) + +#endif /* __ASM_NIOS2_SYSTEM_H */ -- 1.7.3.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox