diff options
Diffstat (limited to 'nuttx/arch/arm/src/sam3u/chip/sam_rstc.h')
| -rw-r--r-- | nuttx/arch/arm/src/sam3u/chip/sam_rstc.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/sam3u/chip/sam_rstc.h b/nuttx/arch/arm/src/sam3u/chip/sam_rstc.h new file mode 100644 index 000000000..d8e1bd10f --- /dev/null +++ b/nuttx/arch/arm/src/sam3u/chip/sam_rstc.h @@ -0,0 +1,102 @@ +/**************************************************************************************** + * arch/arm/src/sam3u/chip/sam_rstc.h + * + * Copyright (C) 2009, 2013 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************************/ + +#ifndef __ARCH_ARM_SRC_SAM3U_CHIP_SAM_RSTC_H +#define __ARCH_ARM_SRC_SAM3U_CHIP_SAM_RSTC_H + +/**************************************************************************************** + * Included Files + ****************************************************************************************/ + +#include <nuttx/config.h> + +#include "chip.h" +#include "chip/sam_memorymap.h" + +/**************************************************************************************** + * Pre-processor Definitions + ****************************************************************************************/ + +/* RSTC register offsets ****************************************************************/ + +#define SAM_RSTC_CR_OFFSET 0x00 /* Control Register */ +#define SAM_RSTC_SR_OFFSET 0x04 /* Status Register */ +#define SAM_RSTC_MR_OFFSET 0x08 /* Mode Register */ + +/* RSTC register adresses ***************************************************************/ + +#define SAM_RSTC_CR (SAM_RSTC_BASE+SAM_RSTC_CR_OFFSET) +#define SAM_RSTC_SR (SAM_RSTC_BASE+SAM_RSTC_SR_OFFSET) +#define SAM_RSTC_MR (SAM_RSTC_BASE+SAM_RSTC_MR_OFFSET) + +/* RSTC register bit definitions ********************************************************/ + +#define RSTC_CR_PROCRST (1 << 0) /* Bit 0: Processor Reset */ +#define RSTC_CR_PERRST (1 << 2) /* Bit 2: Peripheral Reset */ +#define RSTC_CR_EXTRST (1 << 3) /* Bit 3: External Reset */ +#define RSTC_CR_KEY_SHIFT (24) /* Bits 24-31: Password */ +#define RSTC_CR_KEY_MASK (0xff << RSTC_CR_KEY_SHIFT) + +#define RSTC_SR_URSTS (1 << 0) /* Bit 0: User Reset Status */ +#define RSTC_SR_RSTTYP_SHIFT (8) /* Bits 8-10: Reset Type */ +#define RSTC_SR_RSTTYP_MASK (7 << RSTC_SR_RSTTYP_SHIFT) +# define RSTC_SR_RSTTYP_PWRUP (0 << RSTC_SR_RSTTYP_SHIFT) /* General Reset */ +# define RSTC_SR_RSTTYP_BACKUP (1 << RSTC_SR_RSTTYP_SHIFT) /* Backup Reset */ +# define RSTC_SR_RSTTYP_WDOG (2 << RSTC_SR_RSTTYP_SHIFT) /* Watchdog Reset */ +# define RSTC_SR_RSTTYP_SWRST (3 << RSTC_SR_RSTTYP_SHIFT) /* Software Reset */ +# define RSTC_SR_RSTTYP_NRST (4 << RSTC_SR_RSTTYP_SHIFT) /* User Reset NRST pin */ +#define RSTC_SR_NRSTL (1 << 16) /* Bit 16: NRST Pin Level */ +#define RSTC_SR_SRCMP (1 << 17) /* Bit 17: Software Reset Command in Progress */ + +#define RSTC_MR_URSTEN (1 << 0) /* Bit 0: User Reset Enable */ +#define RSTC_MR_URSTIEN (1 << 4) /* Bit 4: User Reset Interrupt Enable */ +#define RSTC_MR_ERSTL_SHIFT (8) /* Bits 8-11: External Reset Length */ +#define RSTC_MR_ERSTL_MASK (15 << RSTC_MR_ERSTL_SHIFT) +#define RSTC_MR_KEY_SHIFT (24) /* Bits 24-31: Password */ +#define RSTC_MR_KEY_MASK (0xff << RSTC_CR_KEY_SHIFT) + +/**************************************************************************************** + * Public Types + ****************************************************************************************/ + +/**************************************************************************************** + * Public Data + ****************************************************************************************/ + +/**************************************************************************************** + * Public Functions + ****************************************************************************************/ + +#endif /* __ARCH_ARM_SRC_SAM3U_CHIP_SAM_RSTC_H */ |