diff options
Diffstat (limited to 'nuttx/arch/arm/src/kinetis/kinetis_crc.h')
| -rw-r--r-- | nuttx/arch/arm/src/kinetis/kinetis_crc.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/kinetis/kinetis_crc.h b/nuttx/arch/arm/src/kinetis/kinetis_crc.h new file mode 100644 index 000000000..6b309533b --- /dev/null +++ b/nuttx/arch/arm/src/kinetis/kinetis_crc.h @@ -0,0 +1,114 @@ +/************************************************************************************ + * arch/arm/src/kinetis/kinetis_crc.h + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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_KINETIS_KINETIS_CRC_H +#define __ARCH_ARM_SRC_KINETIS_KINETIS_CRC_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include <nuttx/config.h> + +#include "chip.h" + +/************************************************************************************ + * Pre-processor Definitions + ************************************************************************************/ + +/* Register Offsets *****************************************************************/ + +#define KINETIS_CRC_CRC_OFFSET 0x0000 /* CRC Data Register */ +#define KINETIS_CRC_GPOLY_OFFSET 0x0004 /* CRC Polynomial Register */ +#define KINETIS_CRC_CTRL_OFFSET 0x0008 /* CRC Control Register */ + +/* Register Addresses ***************************************************************/ + +#define KINETIS_CRC_CRC (KINETIS_CRC_BASE+KINETIS_CRC_CRC_OFFSET) +#define KINETIS_CRC_GPOLY (KINETIS_CRC_BASE+KINETIS_CRC_GPOLY_OFFSET) +#define KINETIS_CRC_CTRL (KINETIS_CRC_BASE+KINETIS_CRC_CTRL_OFFSET) + +/* Register Bit Definitions *********************************************************/ + +/* CRC Data Register (32-bit) */ + +#define CRC_CRC_LL_SHIFT (0) /* Bits 0-7: CRC Low Lower Byte */ +#define CRC_CRC_LL_MASK (0xff << CRC_CRC_LL_SHIFT) +#define CRC_CRC_LU_SHIFT (8) /* Bits 8-15: CRC Low Upper Byte */ +#define CRC_CRC_LU_MASK (0xff << CRC_CRC_LU_SHIFT) +#define CRC_CRC_HL_SHIFT (16) /* Bits 16-23: CRC High Lower Byte */ +#define CRC_CRC_HL_MASK (0xff << CRC_CRC_HL_SHIFT) +#define CRC_CRC_HU_SHIFT (24) /* Bits 24-31: CRC High Upper Byte */ +#define CRC_CRC_HU_MASK (0xff << CRC_CRC_HU_SHIFT) + +/* CRC Polynomial Register */ + +#define CRC_GPOLY_LOW_SHIFT (0) /* Bits 0-15: Low polynominal half-word */ +#define CRC_GPOLY_LOW_MASK (0xffff << CRC_GPOLY_LOW_SHIFT) +#define CRC_GPOLY_HIGH_SHIFT (16) /* Bits 16-31: High polynominal half-word */ +#define CRC_GPOLY_HIGH_MASK (0xffff << CRC_GPOLY_HIGH_SHIFT) + +/* CRC Control Register */ + /* Bits 0-23: Reserved */ +#define CRC_CTRL_TCRC (1 << 24) /* Bit 24: Width of CRC protocol */ +#define CRC_CTRL_WAS (1 << 25) /* Bit 25: Write CRC data register as seed */ +#define CRC_CTRL_FXOR (1 << 26) /* Bit 26: Complement Read of CRC data register */ + /* Bit 27: Reserved */ +#define CRC_CTRL_TOTR_SHIFT (28) /* Bits 28-29: Type of Transpose for Read */ +#define CRC_CTRL_TOTR_MASK (3 << CRC_CTRL_TOTR_SHIFT) +# define CRC_CTRL_TOTR_NONE (0 << CRC_CTRL_TOTR_SHIFT) /* No transposition */ +# define CRC_CTRL_TOTR_BITS (1 << CRC_CTRL_TOTR_SHIFT) /* Bits transposed; bytes are not */ +# define CRC_CTRL_TOTR_BOTH (2 << CRC_CTRL_TOTR_SHIFT) /* Both bits bytes and bytes transposed */ +# define CRC_CTRL_TOTR_BYTES (3 << CRC_CTRL_TOTR_SHIFT) /* Bytes transposed; bits in byte are not */ +#define CRC_CTRL_TOT_SHIFT (30) /* Bits 30-31: Type of Transpose for Writes */ +#define CRC_CTRL_TOT_MASK (3 << CRC_CTRL_TOT_SHIFT) +# define CRC_CTRL_TOT_NONE (0 << CRC_CTRL_TOT_SHIFT) /* No transposition */ +# define CRC_CTRL_TOT_BITS (1 << CRC_CTRL_TOT_SHIFT) /* Bits transposed; bytes are not */ +# define CRC_CTRL_TOT_BOTH (2 << CRC_CTRL_TOT_SHIFT) /* Both bits bytes and bytes transposed */ +# define CRC_CTRL_TOT_BYTES (3 << CRC_CTRL_TOT_SHIFT) /* Bytes transposed; bits in byte are not */ + +/************************************************************************************ + * Public Types + ************************************************************************************/ + +/************************************************************************************ + * Public Data + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +#endif /* __ARCH_ARM_SRC_KINETIS_KINETIS_CRC_H */ |