From 51307919b41fcd034e846da68f8f714df32a73e9 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Fri, 20 Mar 2020 09:12:26 +0100 Subject: arm: ARMv7-M statically initialized vector table Statically initialize the ARMv7-M vector table to allow a placement in ROM with read-only MPU settings. Change licence to BSD-2-Clause in some files. --- bsps/arm/shared/clock/clock-armv7m.c | 39 ++++++++++++------ bsps/arm/shared/irq/irq-armv7m.c | 50 +++++++++++++++-------- bsps/arm/shared/start/start.S | 10 ++--- cpukit/score/cpu/arm/armv7m-initialize.c | 44 ++++++++++++-------- cpukit/score/cpu/arm/include/rtems/score/armv7m.h | 2 + 5 files changed, 93 insertions(+), 52 deletions(-) diff --git a/bsps/arm/shared/clock/clock-armv7m.c b/bsps/arm/shared/clock/clock-armv7m.c index 7a51690562..255de1ca42 100644 --- a/bsps/arm/shared/clock/clock-armv7m.c +++ b/bsps/arm/shared/clock/clock-armv7m.c @@ -1,15 +1,29 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + /* - * Copyright (c) 2011, 2018 Sebastian Huber. All rights reserved. + * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de) + * Copyright (C) 2011, 2018 Sebastian Huber * - * embedded brains GmbH - * Dornierstr. 4 - * 82178 Puchheim - * Germany - * + * 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. * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. + * 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. */ #include @@ -29,7 +43,7 @@ static uint32_t _ARMV7M_TC_get_timecount(struct timecounter *base) return _ARMV7M_Clock_counter((ARMV7M_Timecounter *) base); } -static void _ARMV7M_Clock_handler(void) +void _ARMV7M_Clock_handler(void) { _ARMV7M_Interrupt_service_enter(); Clock_isr(NULL); @@ -38,10 +52,9 @@ static void _ARMV7M_Clock_handler(void) static void _ARMV7M_Clock_handler_install(void) { - _ARMV7M_Set_exception_priority_and_handler( + _ARMV7M_Set_exception_priority( ARMV7M_VECTOR_SYSTICK, - BSP_ARMV7M_SYSTICK_PRIORITY, - _ARMV7M_Clock_handler + BSP_ARMV7M_SYSTICK_PRIORITY ); } diff --git a/bsps/arm/shared/irq/irq-armv7m.c b/bsps/arm/shared/irq/irq-armv7m.c index 99c0e373bf..84ebeeb159 100644 --- a/bsps/arm/shared/irq/irq-armv7m.c +++ b/bsps/arm/shared/irq/irq-armv7m.c @@ -1,27 +1,41 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + /* - * Copyright (c) 2011-2012 Sebastian Huber. All rights reserved. + * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de) + * Copyright (C) 2011, 2012 Sebastian Huber * - * embedded brains GmbH - * Obere Lagerstr. 30 - * 82178 Puchheim - * Germany - * + * 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. * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. + * 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. */ -#include - -#include - +#include #include #include -#include #include #include +#include + +#include + #ifdef ARM_MULTILIB_ARCH_V7M void bsp_interrupt_vector_enable(rtems_vector_number vector) @@ -38,9 +52,10 @@ void bsp_interrupt_vector_disable(rtems_vector_number vector) rtems_status_code bsp_interrupt_facility_initialize(void) { - int i; - ARMV7M_Exception_handler *vector_table = - (ARMV7M_Exception_handler *) bsp_vector_table_begin; + ARMV7M_Exception_handler *vector_table; + int i; + + vector_table = (ARMV7M_Exception_handler *) bsp_vector_table_begin; if (bsp_vector_table_begin != bsp_start_vector_table_begin) { memcpy( @@ -53,7 +68,6 @@ rtems_status_code bsp_interrupt_facility_initialize(void) _ARMV7M_SCB->icsr = ARMV7M_SCB_ICSR_PENDSVCLR | ARMV7M_SCB_ICSR_PENDSTCLR; for (i = BSP_INTERRUPT_VECTOR_MIN; i <= BSP_INTERRUPT_VECTOR_MAX; ++i) { - vector_table [ARMV7M_VECTOR_IRQ(i)] = _ARMV7M_NVIC_Interrupt_dispatch; _ARMV7M_NVIC_Clear_enable(i); _ARMV7M_NVIC_Clear_pending(i); _ARMV7M_NVIC_Set_priority(i, BSP_ARMV7M_IRQ_PRIORITY_DEFAULT); diff --git a/bsps/arm/shared/start/start.S b/bsps/arm/shared/start/start.S index e56b07fefe..93590c1c36 100644 --- a/bsps/arm/shared/start/start.S +++ b/bsps/arm/shared/start/start.S @@ -5,7 +5,7 @@ */ /* - * Copyright (c) 2008, 2019 embedded brains GmbH. All rights reserved. + * Copyright (c) 2008, 2020 embedded brains GmbH. All rights reserved. * * embedded brains GmbH * Dornierstr. 4 @@ -456,13 +456,13 @@ bsp_start_vector_table_begin: .word _ARMV7M_Exception_default /* Reserved */ .word _ARMV7M_Exception_default /* Reserved */ .word _ARMV7M_Exception_default /* Reserved */ - .word _ARMV7M_Exception_default /* SVC */ + .word _ARMV7M_Supervisor_call /* SVC */ .word _ARMV7M_Exception_default /* Debug Monitor */ .word _ARMV7M_Exception_default /* Reserved */ - .word _ARMV7M_Exception_default /* PendSV */ - .word _ARMV7M_Exception_default /* SysTick */ + .word _ARMV7M_Pendable_service_call /* PendSV */ + .word _ARMV7M_Clock_handler /* SysTick */ .rept BSP_INTERRUPT_VECTOR_MAX + 1 - .word _ARMV7M_Exception_default /* IRQ */ + .word _ARMV7M_NVIC_Interrupt_dispatch /* IRQ */ .endr bsp_start_vector_table_end: diff --git a/cpukit/score/cpu/arm/armv7m-initialize.c b/cpukit/score/cpu/arm/armv7m-initialize.c index 4f0e0e4fe6..6ec863fa30 100644 --- a/cpukit/score/cpu/arm/armv7m-initialize.c +++ b/cpukit/score/cpu/arm/armv7m-initialize.c @@ -1,3 +1,5 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + /** * @file * @@ -5,21 +7,33 @@ */ /* - * Copyright (c) 2011 Sebastian Huber. All rights reserved. + * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de) + * Copyright (C) 2011 Sebastian Huber * - * embedded brains GmbH - * Obere Lagerstr. 30 - * 82178 Puchheim - * Germany - * + * 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. * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. + * 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. */ #ifdef HAVE_CONFIG_H - #include "config.h" +#include "config.h" #endif #include @@ -35,15 +49,13 @@ void _CPU_Initialize( void ) * also "ARMv7-M Architecture Reference Manual, Issue D" section B1.5.4 * "Exception priorities and preemption". */ - _ARMV7M_Set_exception_priority_and_handler( + _ARMV7M_Set_exception_priority( ARMV7M_VECTOR_SVC, - ARMV7M_EXCEPTION_PRIORITY_LOWEST, - _ARMV7M_Supervisor_call + ARMV7M_EXCEPTION_PRIORITY_LOWEST ); - _ARMV7M_Set_exception_priority_and_handler( + _ARMV7M_Set_exception_priority( ARMV7M_VECTOR_PENDSV, - ARMV7M_EXCEPTION_PRIORITY_LOWEST, - _ARMV7M_Pendable_service_call + ARMV7M_EXCEPTION_PRIORITY_LOWEST ); } diff --git a/cpukit/score/cpu/arm/include/rtems/score/armv7m.h b/cpukit/score/cpu/arm/include/rtems/score/armv7m.h index a6cc8a34ac..c701e1037c 100644 --- a/cpukit/score/cpu/arm/include/rtems/score/armv7m.h +++ b/cpukit/score/cpu/arm/include/rtems/score/armv7m.h @@ -609,6 +609,8 @@ void _ARMV7M_Pendable_service_call( void ); void _ARMV7M_Supervisor_call( void ); +void _ARMV7M_Clock_handler( void ); + #endif /* ASM */ #endif /* ARM_MULTILIB_ARCH_V7M */ -- cgit v1.2.3