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nuttx/boards/arm/stm32f7/nucleo-144/src/stm32_bbsram.c
Alin Jerpelea 1863dca88a boards: Author David Sidrane: update licenses to Apache 
David Sidrane has submitted the ICL and we can migrate the licenses
 to Apache.

Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-03-22 19:28:38 -07:00

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/****************************************************************************
* boards/arm/stm32f7/nucleo-144/src/stm32_bbsram.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 "arm_internal.h"
#include "stm32_bbsram.h"
#include "nucleo-144.h"
#ifdef CONFIG_STM32F7_BBSRAM
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#define FREEZE_STR(s) #s
#define STRINGIFY(s) FREEZE_STR(s)
#define HARDFAULT_FILENO 3
#define HARDFAULT_PATH BBSRAM_PATH""STRINGIFY(HARDFAULT_FILENO)
#define HARDFAULT_REBOOT_ FILENO 0
#define HARDFAULT_REBOOT_PATH BBSRAM_PATH""STRINGIFY(HARDFAULT_REBOOT_FILENO)
#define BBSRAM_SIZE_FN0 (sizeof(int))
#define BBSRAM_SIZE_FN1 384
#define BBSRAM_SIZE_FN2 384
#define BBSRAM_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 stm32_bbsram_savepanic
*/
#define BBSRAM_HEADER_SIZE 20 /* This is an assumption */
#define BBSRAM_USED ((4*BBSRAM_HEADER_SIZE)+ \
(BBSRAM_SIZE_FN0+BBSRAM_SIZE_FN1+ \
BBSRAM_SIZE_FN2))
#define BBSRAM_REAMINING (STM32F7_BBSRAM_SIZE-BBSRAM_USED)
#if CONFIG_ARCH_INTERRUPTSTACK <= 3
# define BBSRAM_NUMBER_STACKS 1
#else
# define BBSRAM_NUMBER_STACKS 2
#endif
#define BBSRAM_FIXED_ELEMENTS_SIZE (sizeof(info_t))
#define BBSRAM_LEFTOVER (BBSRAM_REAMINING-\
BBSRAM_FIXED_ELEMENTS_SIZE)
#define CONFIG_ISTACK_SIZE (BBSRAM_LEFTOVER/BBSRAM_NUMBER_STACKS/ \
sizeof(stack_word_t))
#define CONFIG_USTACK_SIZE (BBSRAM_LEFTOVER/BBSRAM_NUMBER_STACKS/ \
sizeof(stack_word_t))
/* The path to the Battery Backed up SRAM */
#define BBSRAM_PATH "/fs/bbr"
/* The sizes of the files to create (-1) use rest of BBSRAM memory */
#define BSRAM_FILE_SIZES \
{ \
BBSRAM_SIZE_FN0, \
BBSRAM_SIZE_FN1, \
BBSRAM_SIZE_FN2, \
BBSRAM_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 r0;
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 sp;
uint32_t lr;
uint32_t pc;
uint32_t xpsr;
uint32_t d0;
uint32_t d1;
uint32_t d2;
uint32_t d3;
uint32_t d4;
uint32_t d5;
uint32_t d6;
uint32_t d7;
uint32_t d8;
uint32_t d9;
uint32_t d10;
uint32_t d11;
uint32_t d12;
uint32_t d13;
uint32_t d14;
uint32_t d15;
uint32_t fpscr;
uint32_t sp_main;
uint32_t sp_process;
uint32_t apsr;
uint32_t ipsr;
uint32_t epsr;
uint32_t primask;
uint32_t basepri;
uint32_t faultmask;
uint32_t control;
uint32_t s0;
uint32_t s1;
uint32_t s2;
uint32_t s3;
uint32_t s4;
uint32_t s5;
uint32_t s6;
uint32_t s7;
uint32_t s8;
uint32_t s9;
uint32_t s10;
uint32_t s11;
uint32_t s12;
uint32_t s13;
uint32_t s14;
uint32_t s15;
uint32_t s16;
uint32_t s17;
uint32_t s18;
uint32_t s19;
uint32_t s20;
uint32_t s21;
uint32_t s22;
uint32_t s23;
uint32_t s24;
uint32_t s25;
uint32_t s26;
uint32_t s27;
uint32_t s28;
uint32_t s29;
uint32_t s30;
uint32_t s31;
} 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;
typedef struct
{
info_t info; /* The info */
#if CONFIG_ARCH_INTERRUPTSTACK > 3
/* The amount of stack data is compile time
* sized backed on what is left after the
* other BBSRAM files are defined
* The order is such that only the
* ustack should be truncated
*/
stack_word_t istack[CONFIG_USTACK_SIZE];
#endif
stack_word_t ustack[CONFIG_ISTACK_SIZE];
} fullcontext_t;
/****************************************************************************
* Private Data
****************************************************************************/
static uint8_t g_sdata[STM32F7_BBSRAM_SIZE];
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: hardfault_get_desc
****************************************************************************/
static int hardfault_get_desc(struct bbsramd_s *desc)
{
FAR struct file filestruct;
int ret;
ret = file_open(&filestruct, HARDFAULT_PATH, O_RDONLY);
if (ret < 0)
{
syslog(LOG_INFO, "stm32 bbsram: Failed to open Fault Log file [%s] "
"(%d)\n", HARDFAULT_PATH, ret);
}
else
{
ret = file_ioctl(&filestruct, STM32F7_BBSRAM_GETDESC_IOCTL,
(unsigned long)((uintptr_t)desc));
file_close(&filestruct);
if (ret < 0)
{
syslog(LOG_INFO, "stm32 bbsram: Failed to get Fault Log "
"descriptor (%d)\n", ret);
}
}
return ret;
}
/****************************************************************************
* Name: copy_reverse
****************************************************************************/
#if defined(CONFIG_STM32F7_SAVE_CRASHDUMP)
static void copy_reverse(stack_word_t *dest, stack_word_t *src, int size)
{
while (size--)
{
*dest++ = *src--;
}
}
#endif /* CONFIG_STM32F7_SAVE_CRASHDUMP */
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: stm32_bbsram_int
****************************************************************************/
int stm32_bbsram_int(void)
{
int filesizes[CONFIG_STM32F7_BBSRAM_FILES + 1] = BSRAM_FILE_SIZES;
char buf[HEADER_TIME_FMT_LEN + 1];
struct bbsramd_s desc;
int rv;
int state;
struct tm tt;
time_t time_sec;
/* Using Battery Backed Up SRAM */
stm32_bbsraminitialize(BBSRAM_PATH, filesizes);
#if defined(CONFIG_STM32F7_SAVE_CRASHDUMP)
/* Panic Logging in Battery Backed Up Files */
/* Do we have an hard fault in BBSRAM? */
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 = nx_unlink(HARDFAULT_PATH);
if (rv < 0)
{
syslog(LOG_INFO, "stm32 bbsram: Failed to unlink Fault Log file"
" [%s] (%d)\n", HARDFAULT_PATH, rv);
}
}
#endif /* CONFIG_STM32F7_SAVE_CRASHDUMP */
return rv;
}
/****************************************************************************
* Name: board_crashdump
****************************************************************************/
#if defined(CONFIG_STM32F7_SAVE_CRASHDUMP)
void board_crashdump(uintptr_t currentsp, FAR void *tcb,
FAR const char *filename, int lineno)
{
fullcontext_t *pdump = (fullcontext_t *)&g_sdata;
FAR struct tcb_s *rtcb;
int rv;
enter_critical_section();
rtcb = (FAR struct tcb_s *)tcb;
/* Zero out everything */
memset(pdump, 0, sizeof(fullcontext_t));
/* 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(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) 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 (CURRENT_REGS)
{
pdump->info.stacks.interrupt.sp = currentsp;
pdump->info.flags |= (REGS_PRESENT | USERSTACK_PRESENT | \
INTSTACK_PRESENT);
memcpy(pdump->info.regs, (void *)CURRENT_REGS,
sizeof(pdump->info.regs));
pdump->info.stacks.user.sp = pdump->info.regs[REG_R13];
}
else
{
/* users context */
pdump->info.flags |= USERSTACK_PRESENT;
pdump->info.stacks.user.sp = currentsp;
}
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)&g_intstackbase;
pdump->info.stacks.interrupt.size = (CONFIG_ARCH_INTERRUPTSTACK & ~3);
/* 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(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(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 = stm32_bbsram_savepanic(HARDFAULT_FILENO, (uint8_t *)pdump,
sizeof(fullcontext_t));
/* Test if memory got wiped because of using _sdata */
if (rv == -ENXIO)
{
char *dead = "Memory wiped - dump not saved!";
while (*dead)
{
arm_lowputc(*dead++);
}
}
else if (rv == -ENOSPC)
{
/* hard fault again */
arm_lowputc('!');
}
}
#endif /* CONFIG_STM32F7_SAVE_CRASHDUMP */
#endif /* CONFIG_STM32_BBSRAM */
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