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author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:10 -0500 |
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committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:17 +0200 |
commit | 8f0fec74ac6d0f3a7134ccebafa1ed9bd8c712ba (patch) | |
tree | 1bd91a72857c1345faae7b15bd15b0eb9bdf9366 /arch/sh/cpu/sh4/watchdog.c | |
parent | 8d1f268204b07e172f3cb5cee0a3974d605b0b98 (diff) | |
download | u-boot-imx-8f0fec74ac6d0f3a7134ccebafa1ed9bd8c712ba.zip u-boot-imx-8f0fec74ac6d0f3a7134ccebafa1ed9bd8c712ba.tar.gz u-boot-imx-8f0fec74ac6d0f3a7134ccebafa1ed9bd8c712ba.tar.bz2 |
sh: Move cpu/$CPU to arch/sh/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'arch/sh/cpu/sh4/watchdog.c')
-rw-r--r-- | arch/sh/cpu/sh4/watchdog.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/sh/cpu/sh4/watchdog.c b/arch/sh/cpu/sh4/watchdog.c new file mode 100644 index 0000000..f692429 --- /dev/null +++ b/arch/sh/cpu/sh4/watchdog.c @@ -0,0 +1,71 @@ +/* + * 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 + */ + +#include <common.h> +#include <asm/processor.h> +#include <asm/io.h> + +#define WDT_BASE WTCNT + +#define WDT_WD (1 << 6) +#define WDT_RST_P (0) +#define WDT_RST_M (1 << 5) +#define WDT_ENABLE (1 << 7) + +#if defined(CONFIG_WATCHDOG) +static unsigned char csr_read(void) +{ + return inb(WDT_BASE + 0x04); +} + +static void cnt_write(unsigned char value) +{ + outl((unsigned short)value | 0x5A00, WDT_BASE + 0x00); +} + +static void csr_write(unsigned char value) +{ + outl((unsigned short)value | 0xA500, WDT_BASE + 0x04); +} + +void watchdog_reset(void) +{ + outl(0x55000000, WDT_BASE + 0x08); +} + +int watchdog_init(void) +{ + /* Set overflow time*/ + cnt_write(0); + /* Power on reset */ + csr_write(WDT_WD|WDT_RST_P|WDT_ENABLE); + + return 0; +} + +int watchdog_disable(void) +{ + csr_write(csr_read() & ~WDT_ENABLE); + return 0; +} +#endif + +void reset_cpu(unsigned long ignored) +{ + while (1) + ; +} |