#ifndef _ARCH_ARM_AT91_H_ #define _ARCH_ARM_AT91_H_ /* * Copyright (C) 2005 by egnite Software GmbH. All rights reserved. * * 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 of the copyright holders nor the names of * 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. * * For additional information see http://www.ethernut.de/ */ /*! * \file arch/arm/at91.h * \brief AT91 peripherals. * * \verbatim * * $Log$ * Revision 1.14 2009/02/17 09:31:41 haraldkipp * Use more general macros. Added definition for NUT_HWCLK_PERIPHERAL for * targets which have a PMC MDIV flag. * * Revision 1.13 2008/08/06 12:51:10 haraldkipp * Added support for Ethernut 5 (AT91SAM9XE reference design). * * Revision 1.12 2008/02/15 16:59:42 haraldkipp * Spport for AT91SAM7SE512 added. * * Revision 1.11 2007/10/04 20:25:26 olereinhardt * Support for SAM7S256 added * * Revision 1.10 2006/08/31 19:04:08 haraldkipp * Added support for the AT91SAM9260 and Atmel's AT91SAM9260 Evaluation Kit. * * Revision 1.9 2006/08/01 07:35:59 haraldkipp * Exclude function prototypes when included by assembler. * * Revision 1.8 2006/07/05 07:45:25 haraldkipp * Split on-chip interface definitions. * * Revision 1.7 2006/06/28 17:22:34 haraldkipp * Make it compile for AT91SAM7X256. * * Revision 1.6 2006/05/25 09:09:57 haraldkipp * API documentation updated and corrected. * * Revision 1.5 2006/04/07 12:57:00 haraldkipp * Fast interrupt doesn't require to store R8-R12. * * Revision 1.4 2006/03/02 20:02:56 haraldkipp * Added ICCARM interrupt entry code. Probably not working, because I * excluded an immediate load. * * Revision 1.3 2006/01/05 16:52:49 haraldkipp * Baudrate calculation is now based on NutGetCpuClock(). * The AT91_US_BAUD macro had been marked deprecated. * * Revision 1.2 2005/11/20 14:44:14 haraldkipp * Register offsets added. * * Revision 1.1 2005/10/24 10:31:13 haraldkipp * Moved from parent directory. * * * \endverbatim */ #if defined (MCU_AT91R40008) #include #elif defined (MCU_AT91SAM7X) #include #elif defined (MCU_AT91SAM7S) #include #elif defined (MCU_AT91SAM7SE) #include #elif defined (MCU_AT91SAM9260) #include #elif defined (MCU_AT91SAM9G45) #include #elif defined(MCU_AT91SAM9XE) #include #endif #if defined(PMC_HAS_MDIV) /* If the power management controller has a master clock divider, then the peripherals may run on a slower clock than the CPU. In this case set the peripheral clock index to 1. If NUT_HWCLK_PERIPHERAL is not defined, it will be set in sys/timer.h to NUT_HWCLK_CPU, which is 0. */ #define NUT_HWCLK_PERIPHERAL 1 #endif /*! \addtogroup xgNutArchArmAt91 */ /*@{*/ #ifdef __GNUC__ /*! * \brief Interrupt entry. */ #define IRQ_ENTRY() \ asm volatile("sub lr, lr,#4" "\n\t" /* Adjust LR */ \ "stmfd sp!,{r0-r12,lr}" "\n\t" /* Save registers on IRQ stack. */ \ "mrs r1, spsr" "\n\t" /* Save SPSR */ \ "stmfd sp!,{r1}" "\n\t") /* */ /*! * \brief Interrupt exit. */ #define IRQ_EXIT() \ asm volatile("ldmfd sp!, {r1}" "\n\t" /* Restore SPSR */ \ "msr spsr_c, r1" "\n\t" /* */ \ "ldr r0, =0xFFFFF000" "\n\t" /* End of interrupt. */ \ "str r0, [r0, #0x130]" "\n\t" /* */ \ "ldmfd sp!, {r0-r12, pc}^" "\n\t") /* Restore registers and return. */ /*! * \brief Fast interrupt entry. */ #define FIQ_ENTRY() \ asm volatile("sub lr, lr,#4" "\n\t" /* Adjust LR */ \ "stmfd sp!,{r0-r7,lr}" "\n\t" /* Save registers on IRQ stack. */ \ "mrs r1, spsr" "\n\t" /* Save SPSR */ \ "stmfd sp!,{r1}" "\n\t") /* */ /*! * \brief Fast interrupt exit. */ #define FIQ_EXIT() \ asm volatile("ldmfd sp!, {r1}" "\n\t" /* Restore SPSR */ \ "msr spsr_c, r1" "\n\t" /* */ \ "ldr r0, =0xFFFFF000" "\n\t" /* End of interrupt. */ \ "str r0, [r0, #0x130]" "\n\t" /* */ \ "ldmfd sp!, {r0-r7, pc}^" "\n\t") /* Restore registers and return. */ #else /* __IMAGECRAFT__ */ #define IRQ_ENTRY() \ asm("sub lr, lr,#4\n" \ "stmfd sp!,{r0-r12,lr}\n" \ "mrs r1, spsr\n" \ "stmfd sp!,{r1}\n") #define IRQ_EXIT() \ asm("ldmfd sp!, {r1}\n" \ "msr spsr_c, r1\n" \ ";ldr r0, =0xFFFFF000\n" /* ICCARM: FIXME! */ \ "str r0, [r0, #0x130]\n" \ "ldmfd sp!, {r0-r12, pc}^") #define FIQ_ENTRY() \ asm("sub lr, lr,#4\n" \ "stmfd sp!,{r0-r7,lr}\n" \ "mrs r1, spsr\n" \ "stmfd sp!,{r1}\n") #define FIQ_EXIT() \ asm("ldmfd sp!, {r1}\n" \ "msr spsr_c, r1\n" \ ";ldr r0, =0xFFFFF000\n" /* ICCARM: FIXME! */ \ "str r0, [r0, #0x130]\n" \ "ldmfd sp!, {r0-r7, pc}^") #endif /*@} xgNutArchArmAt91 */ #ifndef __ASSEMBLER__ extern void McuInit(void); #endif #endif /* _ARCH_ARM_AT91_H_ */