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/*
* SoftwareReset.cpp
*
* Created on: 15 Nov 2019
* Author: David
*/
#include "SoftwareReset.h"
#include <Platform/Tasks.h>
#include <Platform/RepRap.h>
#include <Platform/Platform.h>
#include <General/Portability.h>
extern uint32_t _estack; // defined in the linker script
// The following must be kept in line with enum class SoftwareResetReason
const char *const SoftwareResetData::ReasonText[] =
{
"User",
"Erase",
"NMI",
"HardFault",
"StuckInSpinLoop",
"WatchdogTimeout",
"UsageFault",
"OtherFault",
"StackOverflow",
"AssertionFailed",
"HeatTaskStuck",
"MemoryProtectionFault",
"TerminateCalled",
"PureOrDeletedVirtualFunctionCalled",
"OutOfMemory",
"Unknown"
};
uint8_t SoftwareResetData::extraDebugInfo; // extra info for debugging
// Return true if this struct can be written without erasing it first
bool SoftwareResetData::IsVacant() const noexcept
{
const uint32_t *p = reinterpret_cast<const uint32_t*>(this);
for (size_t i = 0; i < sizeof(*this)/sizeof(uint32_t); ++i)
{
if (*p != 0xFFFFFFFF)
{
return false;
}
++p;
}
return true;
}
void SoftwareResetData::Clear() noexcept
{
memset(this, 0xFF, sizeof(*this));
}
// Populate this reset data from the parameters passed and the CPU state
void SoftwareResetData::Populate(uint16_t reason, const uint32_t *stk) noexcept
{
magic = magicValue;
resetReason = reason | ((extraDebugInfo & 0x07) << 5);
when = (uint32_t)reprap.GetPlatform().GetDateTime();
neverUsedRam = Tasks::GetNeverUsedRam();
hfsr = SCB->HFSR;
cfsr = SCB->CFSR;
icsr = SCB->ICSR;
#if USE_MPU
if ((reason & (uint16_t)SoftwareResetReason::mainReasonMask) == (uint16_t)SoftwareResetReason::memFault)
{
bfar = SCB->MMFAR; // on a memory fault we store the MMFAR instead of the BFAR
}
else
{
bfar = SCB->BFAR;
}
#else
bfar = SCB->BFAR;
#endif
// Get the task name if we can. There may be no task executing, so we must allow for this.
const TaskHandle_t currentTask = xTaskGetCurrentTaskHandle();
taskName = (currentTask == nullptr) ? 0x656e6f6e : LoadLE32(pcTaskGetName(currentTask));
sp = reinterpret_cast<uint32_t>(stk);
if (stk == nullptr)
{
stackOffset = 0;
stackMarkerValid = 0;
spare = 0;
}
else
{
const char *stackLimit = (currentTask == nullptr) ? sysStackLimit : (const char*)currentTask + sizeof(TaskBase);
stackOffset = ((const char*)stk - stackLimit) >> 2;
stackMarkerValid = stackLimit[0] == 0xA5 && stackLimit[3] == 0xA5;
spare = 0;
for (uint32_t& stval : stack)
{
stval = (stk < &_estack) ? *stk++ : 0xFFFFFFFF;
}
}
}
void SoftwareResetData::Print(MessageType mtype, unsigned int slot) const noexcept
{
String<StringLength256> scratchString; // long enough to print 28 stack entries @ 9 bytes each, but not 29
scratchString.copy("Last software reset ");
if (when != 0)
{
const time_t whenTime = (time_t)when;
tm timeInfo;
gmtime_r(&whenTime, &timeInfo);
scratchString.catf("at %04u-%02u-%02u %02u:%02u",
timeInfo.tm_year + 1900, timeInfo.tm_mon + 1, timeInfo.tm_mday, timeInfo.tm_hour, timeInfo.tm_min);
}
else
{
scratchString.cat("time unknown");
}
scratchString.cat(", reason: ");
if (resetReason & (uint32_t)SoftwareResetReason::deliberate)
{
scratchString.cat("deliberate ");
}
scratchString.cat(ReasonText[(resetReason >> 5) & 0x0F]);
// If it's a forced hard fault or a memory access fault, provide some more information
if ((resetReason & (uint16_t)SoftwareResetReason::mainReasonMask) == (uint16_t)SoftwareResetReason::hardFault && (hfsr & 1u << 30) != 0)
{
if (cfsr & (1u << 25)) { scratchString.cat(" zeroDiv"); }
if (cfsr & (1u << 24)) { scratchString.cat(" unaligned"); }
if (cfsr & (1u << 18)) { scratchString.cat(" invPC"); }
if (cfsr & (1u << 17)) { scratchString.cat(" invState"); }
if (cfsr & (1u << 16)) { scratchString.cat(" undefInstr"); }
if (cfsr & (1u << 15)) { scratchString.cat(" bfarValid"); }
if (cfsr & (1u << 12)) { scratchString.cat(" stkErr"); }
if (cfsr & (1u << 11)) { scratchString.cat(" unstkErr"); }
if (cfsr & (1u << 10)) { scratchString.cat(" imprec"); }
if (cfsr & (1u << 9)) { scratchString.cat(" precise"); }
if (cfsr & (1u << 8)) { scratchString.cat(" ibus"); }
}
#if USE_MPU
else if ((resetReason & (uint16_t)SoftwareResetReason::mainReasonMask) == (uint16_t)SoftwareResetReason::memFault)
{
if (cfsr & (1u << 7)) { scratchString.cat(" mmarValid"); }
if (cfsr & (1u << 4)) { scratchString.cat(" mstkErr"); }
if (cfsr & (1u << 3)) { scratchString.cat(" munstkErr"); }
if (cfsr & (1u << 1)) { scratchString.cat(" daccViol"); }
if (cfsr & (1u << 0)) { scratchString.cat(" iaccViol"); }
}
#endif
reprap.GetPlatform().MessageF(mtype, "%s, %s spinning, available RAM %" PRIi32 ", slot %u\n",
scratchString.c_str(),
GetModuleName(resetReason & 0x1F),
neverUsedRam,
slot);
// Our format buffer is only 256 characters long, so the next 2 lines must be written separately
// The task name may include nulls at the end, so print it as a string
const uint32_t taskNameWords[2] = { taskName, 0u };
reprap.GetPlatform().MessageF(mtype,
"Software reset code 0x%04x HFSR 0x%08" PRIx32 " CFSR 0x%08" PRIx32 " ICSR 0x%08" PRIx32 " BFAR 0x%08" PRIx32 " SP 0x%08" PRIx32 " Task %s Freestk %u %s\n",
resetReason, hfsr, cfsr, icsr, bfar, sp, (const char *)taskNameWords, (unsigned int)stackOffset, (sp == 0) ? "n/a" : (stackMarkerValid) ? "ok" : "bad marker"
);
if (sp != 0)
{
// We saved a stack dump, so print it
scratchString.Clear();
for (uint32_t stval : stack)
{
scratchString.catf(" %08" PRIx32, stval);
}
reprap.GetPlatform().MessageF(mtype, "Stack:%s\n", scratchString.c_str());
}
}
// End
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