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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2011-07-21 15:18:02 +0000 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2011-07-21 15:18:02 +0000 |
| commit | dc0a7df67469f1170cfb95114c03f5980710c1be (patch) | |
| tree | 202b566de761b1f6090696c89ccf4b787f3dc0cb /c/src/lib/libbsp/powerpc/qoriq/shmsupp/lock.S | |
| parent | 2011-07-21 Sebastian Huber <sebastian.huber@embedded-brains.de> (diff) | |
| download | rtems-dc0a7df67469f1170cfb95114c03f5980710c1be.tar.bz2 | |
2011-07-21 Sebastian Huber <sebastian.huber@embedded-brains.de>
PR 1799/bsps
* .cvsignore, ChangeLog, Makefile.am, README, bsp_specs, configure.ac,
clock/clock-config.c, console/console-config.c,
console/uart-bridge-master.c, console/uart-bridge-slave.c,
include/.cvsignore, include/bsp.h, include/hwreg_vals.h,
include/intercom.h, include/irq.h, include/mmu.h, include/qoriq.h,
include/tm27.h, include/tsec-config.h, include/u-boot-config.h,
include/uart-bridge.h, irq/irq.c, make/custom/qoriq.inc,
make/custom/qoriq_core_0.cfg, make/custom/qoriq_core_1.cfg,
make/custom/qoriq_p1020rdb.cfg, network/if_intercom.c,
network/network.c, rtc/rtc-config.c, shmsupp/intercom-mpci.c,
shmsupp/intercom.c, shmsupp/lock.S, start/start.S,
startup/bsppredriverhook.c, startup/bspreset.c, startup/bspstart.c,
startup/linkcmds.base, startup/linkcmds.qoriq_core_0,
startup/linkcmds.qoriq_core_1, startup/linkcmds.qoriq_p1020rdb,
startup/mmu-config.c, startup/mmu-tlb1.S, startup/mmu.c: New files.
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/qoriq/shmsupp/lock.S | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/qoriq/shmsupp/lock.S b/c/src/lib/libbsp/powerpc/qoriq/shmsupp/lock.S new file mode 100644 index 0000000000..d41a59fdd0 --- /dev/null +++ b/c/src/lib/libbsp/powerpc/qoriq/shmsupp/lock.S @@ -0,0 +1,54 @@ +/** + * @file + * + * @ingroup QorIQInterCom + * + * @brief qoriq_spin_lock() and qoriq_spin_unlock() implementation. + */ + +/* + * Copyright (c) 2011 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#include <libcpu/powerpc-utility.h> + + .global qoriq_spin_lock + .global qoriq_spin_unlock + +qoriq_spin_lock: + li r0, 1 + mfmsr r4 + GET_INTERRUPT_MASK r5 + andc r5, r4, r5 + b 2f +1: + mtmsr r4 +2: + lwarx r6, r0, r3 + cmpwi r6, 0 + bne 2b + mtmsr r5 + stwcx. r0, r0, r3 + bne 1b + isync + mr r3, r4 + blr + +qoriq_spin_unlock: + msync + li r0, 0 + stw r0, 0(r3) + mtmsr r4 + blr |