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nuttx/boards/renesas/rx65n/rx65n-rsk2mb/src/rx65n_sbram.c
rajeshwaribhat 31332904dd Added support to crashdump for rx65n on sbram
2020-04-22 07:32:37 -06:00

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/****************************************************************************
* boards/renesas/rx65n/rx65n-rsk2mb/src/rx65n_sbram.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 <sys/ioctl.h>
#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
#include <syslog.h>
#include <nuttx/fs/fs.h>
#include <nuttx/sched.h>
#include "up_internal.h"
#include "rx65n_sbram.h"
#include "rx65n_rsk2mb.h"
#ifdef CONFIG_RX65N_SBRAM
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#define FREEZE_STR(s) #s
#define STRINGIFY(s) FREEZE_STR(s)
#define HARDFAULT_FILENO 3
#define HARDFAULT_PATH SBRAM_PATH""STRINGIFY(HARDFAULT_FILENO)
#define HARDFAULT_REBOOT_ FILENO 0
#define HARDFAULT_REBOOT_PATH SBRAM_PATH""STRINGIFY(HARDFAULT_REBOOT_FILENO)
#define SBRAM_SIZE_FN0 (sizeof(int))
#define SBRAM_SIZE_FN1 384
#define SBRAM_SIZE_FN2 384
#define SBRAM_SIZE_FN3 - 1
/* The following guides in the amount of the user and interrupt stack
* data we can save. The amount of storage left will dictate the actual
* number of entries of the user stack data saved. If it is too big
* It will be truncated by the call to rx65n_sbram_savepanic
*/
#define SBRAM_HEADER_SIZE 20 /* This is an assumption */
#define SBRAM_USED ((4*SBRAM_HEADER_SIZE)+ \
(SBRAM_SIZE_FN0+SBRAM_SIZE_FN1+ \
SBRAM_SIZE_FN2))
#define SBRAM_REAMINING (RX65N_SBRAM_SIZE-SBRAM_USED)
#if CONFIG_ARCH_INTERRUPTSTACK <= 3
# define SBRAM_NUMBER_STACKS 1
#else
# define SBRAM_NUMBER_STACKS 2
#endif
#define SBRAM_FIXED_ELEMENTS_SIZE (sizeof(info_t))
#define SBRAM_LEFTOVER (SBRAM_REAMINING-\
SBRAM_FIXED_ELEMENTS_SIZE)
#define CONFIG_ISTACK_SIZE (SBRAM_LEFTOVER/SBRAM_NUMBER_STACKS/ \
sizeof(stack_word_t))
#define CONFIG_USTACK_SIZE (SBRAM_LEFTOVER/SBRAM_NUMBER_STACKS/ \
sizeof(stack_word_t))
/* The path to the Standby RAM */
#define SBRAM_PATH "/fs/sbr"
/* The sizes of the files to create (-1) use rest of SBRAM memory */
#define SBRAM_FILE_SIZES \
{ \
SBRAM_SIZE_FN0, \
SBRAM_SIZE_FN1, \
SBRAM_SIZE_FN2, \
SBRAM_SIZE_FN3, \
0 \
}
#define ARRAYSIZE(a) (sizeof((a))/sizeof(a[0]))
/* For Assert keep this much of the file name */
#define MAX_FILE_PATH_LENGTH 40
#define HEADER_TIME_FMT "%Y-%m-%d-%H:%M:%S"
#define HEADER_TIME_FMT_NUM (2+ 0+ 0+ 0+ 0+ 0)
#define HEADER_TIME_FMT_LEN (((ARRAYSIZE(HEADER_TIME_FMT)-1) + \
HEADER_TIME_FMT_NUM))
/****************************************************************************
* Private Data
****************************************************************************/
/* Used for stack frame storage */
typedef uint32_t stack_word_t;
/* Stack related data */
typedef struct
{
uint32_t sp;
uint32_t top;
uint32_t size;
} _stack_t;
typedef struct
{
_stack_t user;
#if CONFIG_ARCH_INTERRUPTSTACK > 3
_stack_t interrupt;
#endif
} stack_t;
/* Not Used for reference only */
typedef struct
{
uint32_t sp;
uint32_t acc0lo;
uint32_t acc0hi;
uint32_t acc0gu;
uint32_t acc1lo;
uint32_t acc1hi;
uint32_t acc1gu;
uint32_t fpsw;
uint32_t r1;
uint32_t r2;
uint32_t r3;
uint32_t r4;
uint32_t r5;
uint32_t r6;
uint32_t r7;
uint32_t r8;
uint32_t r9;
uint32_t r10;
uint32_t r11;
uint32_t r12;
uint32_t r13;
uint32_t r14;
uint32_t r15;
uint32_t pc;
uint32_t psw;
} proc_regs_t;
/* Flags to identify what is in the dump */
typedef enum
{
REGS_PRESENT = 0x01,
USERSTACK_PRESENT = 0x02,
INTSTACK_PRESENT = 0x04,
INVALID_USERSTACK_PTR = 0x20,
INVALID_INTSTACK_PTR = 0x40,
} fault_flags_t;
typedef struct
{
fault_flags_t flags; /* What is in the dump */
uintptr_t current_regs; /* Used to validate the dump */
int lineno; /* __LINE__ to up_assert */
int pid; /* Process ID */
uint32_t regs[XCPTCONTEXT_REGS]; /* Interrupt register save area */
stack_t stacks; /* Stack info */
#if CONFIG_TASK_NAME_SIZE > 0
char name[CONFIG_TASK_NAME_SIZE + 1]; /* Task name (with NULL
* terminator) */
#endif
char filename[MAX_FILE_PATH_LENGTH]; /* the Last of chars in
* __FILE__ to up_assert */
} info_t;
struct fullcontext
{
info_t info; /* The info */
/* The amount of stack data is compile time sized backed on what is left
* after the other standby ram files are defined the order is such that
* only the ustack should be truncated
*/
#if CONFIG_ARCH_INTERRUPTSTACK > 3
stack_word_t istack[CONFIG_USTACK_SIZE];
#endif
stack_word_t ustack[CONFIG_ISTACK_SIZE];
};
/****************************************************************************
* Private Data
****************************************************************************/
static uint8_t g_sdata[RX65N_SBRAM_SIZE];
extern int istack;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: hardfault_get_desc
****************************************************************************/
static int hardfault_get_desc(struct sbramd_s *desc)
{
FAR struct file filestruct;
int ret;
ret = file_open(&filestruct, HARDFAULT_PATH, O_RDONLY);
if (ret < 0)
{
syslog(LOG_INFO, "rx65n sbram: Failed to open Fault Log file [%s] "
"(%d)\n", HARDFAULT_PATH, ret);
}
else
{
ret = file_ioctl(&filestruct, RX65N_SBRAM_GETDESC_IOCTL,
(unsigned long)((uintptr_t)desc));
(void)file_close(&filestruct);
if (ret < 0)
{
syslog(LOG_INFO, "rx65n sbram: Failed to get Fault Log descriptor "
"(%d)\n", ret);
}
}
return ret;
}
/****************************************************************************
* Name: copy_reverse
****************************************************************************/
#if defined(CONFIG_RX65N_SAVE_CRASHDUMP)
static void copy_reverse(stack_word_t *dest, stack_word_t *src, int size)
{
while (size--)
{
*dest++ = *src--;
}
}
#endif /* CONFIG_RX65N_SAVE_CRASHDUMP */
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: rx65n_sbram_int
****************************************************************************/
int rx65n_sbram_int(void)
{
int filesizes[CONFIG_RX65N_SBRAM_FILES + 1] = SBRAM_FILE_SIZES;
char buf[HEADER_TIME_FMT_LEN + 1];
struct sbramd_s desc;
int rv;
int state;
struct tm tt;
time_t time_sec;
/* Using Standby RAM */
rx65n_sbraminitialize(SBRAM_PATH, filesizes);
#if defined(CONFIG_RX65N_SAVE_CRASHDUMP)
/* Panic Logging in Standby RAM Files */
/* Do we have an hard fault in SBRAM? */
rv = hardfault_get_desc(&desc);
if (rv >= OK)
{
syslog(LOG_EMERG, "There is a hard fault logged.\n");
state = (desc.lastwrite.tv_sec || desc.lastwrite.tv_nsec) ? OK : 1;
syslog(LOG_INFO, "Fault Log info File No %d Length %d flags:0x%02x "
"state:%d\n", (unsigned int)desc.fileno, (unsigned int) desc.len,
(unsigned int)desc.flags, state);
if (state == OK)
{
time_sec = desc.lastwrite.tv_sec + (desc.lastwrite.tv_nsec / 1e9);
gmtime_r(&time_sec, &tt);
strftime(buf, HEADER_TIME_FMT_LEN , HEADER_TIME_FMT , &tt);
syslog(LOG_INFO, "Fault Logged on %s - Valid\n", buf);
}
rv = unlink(HARDFAULT_PATH);
if (rv < 0)
{
syslog(LOG_INFO, "rx65n sbram: Failed to unlink Fault Log file [%s"
"] (%d)\n", HARDFAULT_PATH, rv);
}
}
#endif /* CONFIG_RX65N_SAVE_CRASHDUMP */
return rv;
}
/****************************************************************************
* Name: board_crashdump
****************************************************************************/
#if defined(CONFIG_RX65N_SAVE_CRASHDUMP)
void board_crashdump(uintptr_t currentsp, FAR void *tcb,
FAR const uint8_t *filename, int lineno)
{
struct fullcontext *pdump ;
pdump = (struct fullcontext *)&g_sdata;
FAR struct tcb_s *rtcb;
int rv;
(void)enter_critical_section();
rtcb = (FAR struct tcb_s *)tcb;
/* Zero out everything */
memset((uint8_t *)pdump, 0, sizeof(struct fullcontext));
/* Save Info */
pdump->info.lineno = lineno;
if (filename)
{
int offset = 0;
unsigned int len = strlen((char *)filename) + 1;
if (len > sizeof(pdump->info.filename))
{
offset = len - sizeof(pdump->info.filename);
}
strncpy((char *)pdump->info.filename, (char *)&filename[offset],
sizeof(pdump->info.filename));
}
/* Save the value of the pointer for current_regs as debugging info.
* It should be NULL in case of an ASSERT and will aid in cross
* checking the validity of system memory at the time of the
* fault.
*/
pdump->info.current_regs = (uintptr_t) g_current_regs;
/* Save Context */
#if CONFIG_TASK_NAME_SIZE > 0
strncpy(pdump->info.name, rtcb->name, CONFIG_TASK_NAME_SIZE);
#endif
pdump->info.pid = rtcb->pid;
/* If current_regs is not NULL then we are in an interrupt context
* and the user context is in current_regs else we are running in
* the users context
*/
if (g_current_regs)
{
pdump->info.stacks.interrupt.sp = currentsp;
pdump->info.flags |= (REGS_PRESENT | USERSTACK_PRESENT | \
INTSTACK_PRESENT);
memcpy((uint8_t *)pdump->info.regs, (void *)g_current_regs,
sizeof(pdump->info.regs));
pdump->info.stacks.user.sp = pdump->info.regs[REG_SP];
}
else
{
/* users context */
pdump->info.flags |= USERSTACK_PRESENT;
pdump->info.stacks.user.sp = currentsp;
}
if (pdump->info.pid == 0)
{
pdump->info.stacks.user.top = g_idle_topstack - 4;
pdump->info.stacks.user.size = CONFIG_IDLETHREAD_STACKSIZE;
}
else
{
pdump->info.stacks.user.top = (uint32_t) rtcb->adj_stack_ptr;
pdump->info.stacks.user.size = (uint32_t) rtcb->adj_stack_size;
}
#if CONFIG_ARCH_INTERRUPTSTACK > 3
/* Get the limits on the interrupt stack memory */
pdump->info.stacks.interrupt.top = (uint32_t)&istack;
pdump->info.stacks.interrupt.size = (CONFIG_ARCH_INTERRUPTSTACK);
/* If In interrupt Context save the interrupt stack data centered
* about the interrupt stack pointer
*/
if ((pdump->info.flags & INTSTACK_PRESENT) != 0)
{
stack_word_t *ps = (stack_word_t *) pdump->info.stacks.interrupt.sp;
copy_reverse((stack_word_t *)pdump->istack,
&ps[ARRAYSIZE(pdump->istack) / 2],
ARRAYSIZE(pdump->istack));
}
/* Is it Invalid? */
if (!(pdump->info.stacks.interrupt.sp <= pdump->info.stacks.interrupt.top
&& pdump->info.stacks.interrupt.sp > pdump->info.stacks.interrupt.top -
pdump->info.stacks.interrupt.size))
{
pdump->info.flags |= INVALID_INTSTACK_PTR;
}
#endif
/* If In interrupt context or User save the user stack data centered
* about the user stack pointer
*/
if ((pdump->info.flags & USERSTACK_PRESENT) != 0)
{
stack_word_t *ps = (stack_word_t *) pdump->info.stacks.user.sp;
copy_reverse((stack_word_t *)pdump->ustack,
&ps[ARRAYSIZE(pdump->ustack) / 2],
ARRAYSIZE(pdump->ustack));
}
/* Is it Invalid? */
if (!(pdump->info.stacks.user.sp <= pdump->info.stacks.user.top &&
pdump->info.stacks.user.sp > pdump->info.stacks.user.top -
pdump->info.stacks.user.size))
{
pdump->info.flags |= INVALID_USERSTACK_PTR;
}
rv = rx65n_sbram_savepanic(HARDFAULT_FILENO, (uint8_t *)pdump,
sizeof(struct fullcontext));
/* Test if memory got wiped because of using _sdata */
if (rv == -ENXIO)
{
char *dead = "Memory wiped - dump not saved!";
while (*dead)
{
up_lowputc(*dead++);
}
}
else if (rv == -ENOSPC)
{
/* hard fault again */
up_lowputc('!');
}
}
#endif /* CONFIG_RX65N_SAVE_CRASHDUMP */
#endif /* CONFIG_RX65N_SBRAM */
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