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cortex-m/hardfault: add bus-fault handler

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Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an 2021-11-30 21:55:48 +08:00 committed by Xiang Xiao
parent 99fa58c871
commit 2f449245cc
4 changed files with 234 additions and 0 deletions
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19
arch/arm/Kconfig
View File

@ -593,6 +593,7 @@ config ARCH_CORTEXM3
select ARCH_HAVE_TESTSET
select ARCH_HAVE_HARDFAULT_DEBUG
select ARCH_HAVE_MEMFAULT_DEBUG
select ARCH_HAVE_BUSFAULT_DEBUG
config ARCH_CORTEXM4
bool
@ -607,6 +608,7 @@ config ARCH_CORTEXM4
select ARCH_HAVE_TESTSET
select ARCH_HAVE_HARDFAULT_DEBUG
select ARCH_HAVE_MEMFAULT_DEBUG
select ARCH_HAVE_BUSFAULT_DEBUG
config ARCH_CORTEXM7
bool
@ -622,6 +624,7 @@ config ARCH_CORTEXM7
select ARCH_HAVE_TESTSET
select ARCH_HAVE_HARDFAULT_DEBUG
select ARCH_HAVE_MEMFAULT_DEBUG
select ARCH_HAVE_BUSFAULT_DEBUG
config ARCH_ARMV7A
bool
@ -730,6 +733,7 @@ config ARCH_CORTEXM33
select ARCH_HAVE_TESTSET
select ARCH_HAVE_HARDFAULT_DEBUG
select ARCH_HAVE_MEMFAULT_DEBUG
select ARCH_HAVE_BUSFAULT_DEBUG
config ARCH_CORTEXM35P
bool
@ -744,6 +748,7 @@ config ARCH_CORTEXM35P
select ARCH_HAVE_TESTSET
select ARCH_HAVE_HARDFAULT_DEBUG
select ARCH_HAVE_MEMFAULT_DEBUG
select ARCH_HAVE_BUSFAULT_DEBUG
config ARCH_CORTEXM55
bool
@ -758,6 +763,7 @@ config ARCH_CORTEXM55
select ARCH_HAVE_TESTSET
select ARCH_HAVE_HARDFAULT_DEBUG
select ARCH_HAVE_MEMFAULT_DEBUG
select ARCH_HAVE_BUSFAULT_DEBUG
config ARCH_FAMILY
string
@ -967,6 +973,19 @@ config DEBUG_MEMFAULT
output is sometimes helpful when debugging difficult mem fault problems,
but may be more than you typically want to see.
config ARCH_HAVE_BUSFAULT_DEBUG
bool
default n
config DEBUG_BUSFAULT
bool "Verbose Bus-Fault Debug"
default n
depends on ARCH_HAVE_BUSFAULT_DEBUG && DEBUG_ALERT
---help---
Enables verbose debug output when a bus fault is occurs. This verbose
output is sometimes helpful when debugging difficult bus fault problems,
but may be more than you typically want to see.
config ARM_SEMIHOSTING_SYSLOG
bool "Semihosting SYSLOG support"
select ARCH_SYSLOG

107
arch/arm/src/armv7-m/arm_busfault.c Normal file
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@ -0,0 +1,107 @@
/****************************************************************************
* arch/arm/src/armv7-m/arm_busfault.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include <debug.h>
#include <arch/irq.h>
#include "arm_arch.h"
#include "nvic.h"
#include "arm_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_DEBUG_BUSFAULT
# define bfalert(format, ...) _alert(format, ##__VA_ARGS__)
#else
# define bfalert(x...)
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: arm_busfault
*
* Description:
* This is Bus Fault exception handler. It also catches SVC call
* exceptions that are performed in bad contexts.
*
****************************************************************************/
int arm_busfault(int irq, FAR void *context, FAR void *arg)
{
uint32_t cfsr = getreg32(NVIC_CFAULTS);
bfalert("PANIC!!! Bus Fault:\n");
bfalert("\tIRQ: %d regs: %p\n", irq, context);
bfalert("\tBASEPRI: %08x PRIMASK: %08x IPSR: %08x CONTROL: %08x\n",
getbasepri(), getprimask(), getipsr(), getcontrol());
bfalert("\tCFSR: %08x HFSR: %08x DFSR: %08x BFAR: %08x AFSR: %08x\n",
cfsr, getreg32(NVIC_HFAULTS), getreg32(NVIC_DFAULTS),
getreg32(NVIC_BFAULT_ADDR), getreg32(NVIC_AFAULTS));
bfalert("Bus Fault Reason:\n");
if (cfsr & NVIC_CFAULTS_IBUSERR)
{
bfalert("\tInstruction bus error\n");
}
if (cfsr & NVIC_CFAULTS_PRECISERR)
{
bfalert("\tPrecise data bus error\n");
}
if (cfsr & NVIC_CFAULTS_IMPRECISERR)
{
bfalert("\tImprecise data bus error\n");
}
if (cfsr & NVIC_CFAULTS_UNSTKERR)
{
bfalert("\tBusFault on unstacking for a return from exception\n");
}
if (cfsr & NVIC_CFAULTS_STKERR)
{
bfalert("\tBusFault on stacking for exception entry\n");
}
if (cfsr & NVIC_CFAULTS_LSPERR)
{
bfalert("\tFloating-point lazy state preservation error\n");
}
up_irq_save();
PANIC();
return OK;
}

107
arch/arm/src/armv8-m/arm_busfault.c Normal file
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@ -0,0 +1,107 @@
/****************************************************************************
* arch/arm/src/armv8-m/arm_busfault.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include <debug.h>
#include <arch/irq.h>
#include "arm_arch.h"
#include "nvic.h"
#include "arm_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_DEBUG_BUSFAULT
# define bfalert(format, ...) _alert(format, ##__VA_ARGS__)
#else
# define bfalert(x...)
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: arm_busfault
*
* Description:
* This is Bus Fault exception handler. It also catches SVC call
* exceptions that are performed in bad contexts.
*
****************************************************************************/
int arm_busfault(int irq, FAR void *context, FAR void *arg)
{
uint32_t cfsr = getreg32(NVIC_CFAULTS);
bfalert("PANIC!!! Bus Fault:\n");
bfalert("\tIRQ: %d regs: %p\n", irq, context);
bfalert("\tBASEPRI: %08x PRIMASK: %08x IPSR: %08x CONTROL: %08x\n",
getbasepri(), getprimask(), getipsr(), getcontrol());
bfalert("\tCFSR: %08x HFSR: %08x DFSR: %08x BFAR: %08x AFSR: %08x\n",
cfsr, getreg32(NVIC_HFAULTS), getreg32(NVIC_DFAULTS),
getreg32(NVIC_BFAULT_ADDR), getreg32(NVIC_AFAULTS));
bfalert("Bus Fault Reason:\n");
if (cfsr & NVIC_CFAULTS_IBUSERR)
{
bfalert("\tInstruction bus error\n");
}
if (cfsr & NVIC_CFAULTS_PRECISERR)
{
bfalert("\tPrecise data bus error\n");
}
if (cfsr & NVIC_CFAULTS_IMPRECISERR)
{
bfalert("\tImprecise data bus error\n");
}
if (cfsr & NVIC_CFAULTS_UNSTKERR)
{
bfalert("\tBusFault on unstacking for a return from exception\n");
}
if (cfsr & NVIC_CFAULTS_STKERR)
{
bfalert("\tBusFault on stacking for exception entry\n");
}
if (cfsr & NVIC_CFAULTS_LSPERR)
{
bfalert("\tFloating-point lazy state preservation error\n");
}
up_irq_save();
PANIC();
return OK;
}

1
arch/arm/src/common/arm_internal.h
View File

@ -343,6 +343,7 @@ int arm_hardfault(int irq, FAR void *context, FAR void *arg);
# if defined(CONFIG_ARCH_ARMV7M) || defined(CONFIG_ARCH_ARMV8M)
int arm_memfault(int irq, FAR void *context, FAR void *arg);
int arm_busfault(int irq, FAR void *context, FAR void *arg);
# endif /* CONFIG_ARCH_CORTEXM3,4,7 */