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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-01-23 11:19:22 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-01-23 11:19:22 +0100 |
| commit | a762dc2a49fad0e7797806fefd34d144b6d998b2 (patch) | |
| tree | 3f21a6ba6320a3a89581a3d1e2be5162bb8a904f /c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start-watchdog.c | |
| parent | Google C++ Testing Framework 1.6.0. (diff) | |
| download | rtems-a762dc2a49fad0e7797806fefd34d144b6d998b2.tar.bz2 | |
Support for MPC5643L.
Rework of the start sequence to reduce the amount assembler code and to
support configuration tables which may be provided by the application.
Diffstat (limited to 'c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start-watchdog.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start-watchdog.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start-watchdog.c b/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start-watchdog.c new file mode 100644 index 0000000000..209405df0c --- /dev/null +++ b/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start-watchdog.c @@ -0,0 +1,37 @@ +/** + * @file + * + * @ingroup mpc55xx + * + * @brief Watchdog initialization code. + */ + +/* + * 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. + */ + +#include <bsp.h> +#include <bsp/start.h> +#include <bsp/mpc55xx-config.h> + +BSP_START_TEXT_SECTION void mpc55xx_start_watchdog(void) +{ + #ifdef MPC55XX_HAS_SWT + /* Write keys to clear soft lock bit */ + SWT.SR.R = 0x0000c520; + SWT.SR.R = 0x0000d928; + + /* Clear watchdog enable (WEN) */ + SWT.CR.R = 0x8000010A; + #endif +} |