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Bootloader fonctionnel

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This commit is contained in:
jfmartel 2021-09-24 11:36:06 -04:00
parent b48426afc4
commit d9c2cfdc19
12 changed files with 10450 additions and 10367 deletions
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169
ChaletLora.X/Source/BootloaderInterface.c
View File

@ -11,6 +11,7 @@
#include "NetworkProtocol.h"
#include "Syslog.h"
#include "checksum.h"
#include "FlashMapping.h"
#define BOOTLOADER_FLASH_ERASE_POLL_TIMEOUT 25//100 //ms
@ -91,7 +92,7 @@ void BootloaderExecuteCmd(char Cmd,bool CRCValid)
}
case BOOTLOADER_SEND_DATA_CHUNK_REQUEST:
{
// printf("BOOTLOADER_SEND_DATA_CHUNK_REQUEST\n");
// printf("BOOTLOADER_SEND_DATA_CHUNK_REQUEST\n");
BootloaderInterfaceStateMachine(BOOTLOADER_NEW_CMD_EVENT,BOOTLOADER_SM_NEW_DATA_CHUNK_CMD);
break;
}
@ -210,11 +211,21 @@ void BootloaderInterfaceStateMachine(int Event, int Param)
}
case BOOTLOADER_SM_EXECUTE_UPGRAGE_CMD:
{
if(FirmwareUploaded == 1)
if(BootloaderCheckFlashBootloaderData() == RET_OK)
{
//TODO: Do that!
BootloaderProtocolSendACK(BOOTLOADER_EXECUTE_UPGRADE_RESPONSE);
printf("Bootloader will now upgrade and reboot!!\n");
char Flags[2];
Flags[BOOTLOADER_FLAGS_ACTION_FLAG_INDEX] = BOOTLOADER_ACTION_FLASH_FIRMWARE_VALUE;
Flags[BOOTLOADER_FLAGS_ACTION_VALIDATOR_INDEX] = BOOTLOADER_FLASH_FIRMWARE_VALIDATOR;
SPIFlashWriteBuffer(Flags,2,FLASH_BTLDR_FLAGS_ADDRESS);
Sleep(100);
TurnOFFWiFi();
Sleep(100);
SoftReset();
}
else
{
@ -235,6 +246,29 @@ void BootloaderInterfaceStateMachine(int Event, int Param)
}
break;
}
case BOOTLOADER_SM_GET_FIRMWARE_DATA_CMD:
{
char Response[21];
memset(Response,0xFF,sizeof(Response));
if(BootloaderCheckFlashBootloaderData() != RET_OK)
{
Response[0] = 0;
}
else
{
Response[0] = 1;
BootloaderIntToBytes(&Response[1],mStoredBootloaderInfo.Firmwareflags);
BootloaderIntToBytes(&Response[1],mStoredBootloaderInfo.NbRecords);
BootloaderIntToBytes(&Response[1],mStoredBootloaderInfo.FirmwareSize);
BootloaderIntToBytes(&Response[1],mStoredBootloaderInfo.Versioncode);
BootloaderIntToBytes(&Response[1],mStoredBootloaderInfo.DataCRC32);
}
BootloaderProtocolSendStoredFirmwareInfoResponse(Response,sizeof(Response));
break;
}
default:
{
//SEND NACK
@ -355,7 +389,7 @@ void BootloaderInterfaceStateMachine(int Event, int Param)
break;
}
}
break;
}
case BOOTLOADER_NEW_CMD_EVENT:
@ -373,25 +407,25 @@ void BootloaderInterfaceStateMachine(int Event, int Param)
unsigned int DataChunkSize = 0;
DataChunkSize = 0;
// DataChunkIndex = BootloaderBuffer[0];
// DataChunkIndex <<= 8;
// DataChunkIndex += BootloaderBuffer[1];
// DataChunkIndex <<= 8;
// DataChunkIndex += BootloaderBuffer[2];
// DataChunkIndex <<= 8;
// DataChunkIndex += BootloaderBuffer[3];
// DataChunkIndex = BootloaderBuffer[0];
// DataChunkIndex <<= 8;
// DataChunkIndex += BootloaderBuffer[1];
// DataChunkIndex <<= 8;
// DataChunkIndex += BootloaderBuffer[2];
// DataChunkIndex <<= 8;
// DataChunkIndex += BootloaderBuffer[3];
DataChunkIndex = BootloaderBytesToInt(&BootloaderBuffer[0]);
// DataChunkSize = BootloaderBuffer[4];
// DataChunkSize <<= 8;
// DataChunkSize += BootloaderBuffer[5];
// DataChunkSize <<= 8;
// DataChunkSize += BootloaderBuffer[6];
// DataChunkSize <<= 8;
// DataChunkSize += BootloaderBuffer[7];
// DataChunkSize = BootloaderBuffer[4];
// DataChunkSize <<= 8;
// DataChunkSize += BootloaderBuffer[5];
// DataChunkSize <<= 8;
// DataChunkSize += BootloaderBuffer[6];
// DataChunkSize <<= 8;
// DataChunkSize += BootloaderBuffer[7];
DataChunkSize = BootloaderBytesToInt(&BootloaderBuffer[4]);
BootloaderFlashWriteDataPtr = &BootloaderBuffer[8];
//Check CRC
@ -436,7 +470,7 @@ void BootloaderInterfaceStateMachine(int Event, int Param)
else
{
printf("Firmware integrity check failed. Going back to STANDBY state.\n");
// BootloaderProtocolSendNACK(BOOTLOADER_UPLOAD_FINISHED_RESPONSE);
// BootloaderProtocolSendNACK(BOOTLOADER_UPLOAD_FINISHED_RESPONSE);
BootloaderProtocolSendFirmwareUploadResult(BOOTLOADER_UPLOAD_FAILED_FLASH_VERIFICATION_ERROR);
BootloaderResetStateMachine();
FirmwareUploaded = 0;
@ -569,8 +603,8 @@ void BootloaderActivateBootloader()
void BootloaderDeactivateBootloader()
{
BootloaderResetStateMachine();
// CloseBootloaderServer();
// BootloaderIterfaceStateMachine(BOOTLOADER_SM_ABORT_CMD,0);
// CloseBootloaderServer();
// BootloaderIterfaceStateMachine(BOOTLOADER_SM_ABORT_CMD,0);
}
int BootloaderFlashEraseStateMachine(int event)
@ -671,11 +705,11 @@ int BootloaderFlashWriteStateMachine(int event)
if(event == BOOTLOADER_FLASH_WRITE_SM_TICK_EVENT)
{
//TODO: timeout
// return BOOTLOADER_FLASH_WRITE_ERROR_RES;
// return BOOTLOADER_FLASH_WRITE_ERROR_RES;
}
else if(event == BOOTLOADER_FLASH_WRITE_SM_NEW_BUFFER_EVENT)
{
// printf("Starting writing data to Flash\nFlash Address : Data\n");
// printf("Starting writing data to Flash\nFlash Address : Data\n");
BootloaderFlashWriteState = BOOTLOADER_FLASH_WRITE_BUFFER_STATE;
BootloaderFirmwareChunkWriteCount = 0;
return BOOTLOADER_FLASH_WRITING_RES;
@ -716,15 +750,15 @@ int BootloaderFlashWriteStateMachine(int event)
return BOOTLOADER_FLASH_WRITE_ERROR_RES;
}
}
BootloaderFirmwareChunkWriteCount++;
}
BootloaderFlashWriteState = BOOTLOADER_FLASH_WRITE_WAIT_FOR_BYTE_DONE;
return BOOTLOADER_FLASH_WRITING_RES;
// BootloaderFlashWriteState = BOOTLOADER_FLASH_WRITE_STANDBY_STATE;
// return BOOTLOADER_FLASH_WRITE_FINISHED_RES;
// BootloaderFlashWriteState = BOOTLOADER_FLASH_WRITE_STANDBY_STATE;
// return BOOTLOADER_FLASH_WRITE_FINISHED_RES;
break;
@ -735,15 +769,15 @@ int BootloaderFlashWriteStateMachine(int event)
{
BootloaderFlashWriteState = BOOTLOADER_FLASH_WRITE_STANDBY_STATE;
return BOOTLOADER_FLASH_WRITE_FINISHED_RES;
// if(SyslogIsBufferEmpty() == RET_OK)
// {
// BootloaderFlashWriteState = BOOTLOADER_FLASH_WRITE_STANDBY_STATE;
// return BOOTLOADER_FLASH_WRITE_FINISHED_RES;
// }
// else
// {
// return BOOTLOADER_FLASH_WRITING_RES;
// }
// if(SyslogIsBufferEmpty() == RET_OK)
// {
// BootloaderFlashWriteState = BOOTLOADER_FLASH_WRITE_STANDBY_STATE;
// return BOOTLOADER_FLASH_WRITE_FINISHED_RES;
// }
// else
// {
// return BOOTLOADER_FLASH_WRITING_RES;
// }
}
break;
}
@ -791,18 +825,23 @@ int BootloaderCheckFlashBootloaderData()
VersionCode = BootloaderBytesToInt(&FlashData[16]);
CRC32 = BootloaderBytesToInt(&FlashData[20]);
mStoredBootloaderInfo.Firmwareflags = FirmwareFlags;
mStoredBootloaderInfo.NbRecords = NbRecords;
mStoredBootloaderInfo.FirmwareSize = FirmwareSize;
mStoredBootloaderInfo.Versioncode = VersionCode;
mStoredBootloaderInfo.DataCRC32 = CRC32;
printf("File Header: Code:[0x%x] - Flags:[0x%x] - Nb Records:[%d] - Firmware Size:[%d] - Version:[0x%x] - CRC32:[0x%x]\n",FileHeaderCode,FirmwareFlags,NbRecords,FirmwareSize,VersionCode,CRC32);
//printf("File Header: Code:[0x%x] - Flags:[0x%x] - Nb Records:[%d] - Firmware Size:[%d] - Version:[0x%x] - CRC32:[0x%x]\n",FileHeaderCode,FirmwareFlags,NbRecords,FirmwareSize,VersionCode,CRC32);
if(FileHeaderCode != BOOTLOADER_FILE_HEADER_CODE)
{
printf("Invalid file header code, aborting\n");
// printf("Invalid file header code, aborting\n");
return RET_ERROR;
}
if(NbRecords == 0)
{
printf("No records in file (NbRecords = 0), aborting\n");
// printf("No records in file (NbRecords = 0), aborting\n");
return RET_ERROR;
}
@ -820,31 +859,31 @@ int BootloaderCheckFlashBootloaderData()
RecSize = BootloaderBytesToInt(&FlashData[4]);
RecStartAddress = BootloaderBytesToInt(&FlashData[8]);
FlashAddress += 12;
if(RecHeader != BOOTLOADER_RECORD_HEADER_CODE)
{
printf("Error in record #%d. Invalid header code : [0x%x]\n",CurRecord,RecHeader);
// printf("Error in record #%d. Invalid header code : [0x%x]\n",CurRecord,RecHeader);
return RET_ERROR;
}
if(RecSize == 0)
{
printf("Error in record #%d. Invalid record size (RecordSize = 0) \n");
// printf("Error in record #%d. Invalid record size (RecordSize = 0) \n");
return RET_ERROR;
}
// printf("Record #%d OK! Header:[0x%x] - Size:[%d] - Start Address:[0x%x]\n",CurRecord,RecHeader,RecSize,RecStartAddress);
// while(SyslogIsBufferEmpty() == RET_ERROR)
// {
// SyslogTick();
// TickWiFi();
// }
// printf("Record #%d OK! Header:[0x%x] - Size:[%d] - Start Address:[0x%x]\n",CurRecord,RecHeader,RecSize,RecStartAddress);
// while(SyslogIsBufferEmpty() == RET_ERROR)
// {
// SyslogTick();
// TickWiFi();
// }
CurRecord++;
if(CurRecord == NbRecords)
{
// Done = true;
printf("All records checked OK! Computing CRC...\n");
// Done = true;
// printf("All records checked OK! Computing CRC...\n");
Done = true;
break;
//return RET_OK;
@ -854,7 +893,7 @@ int BootloaderCheckFlashBootloaderData()
FlashAddress += RecSize;
}
}
//Now, compute whole data CRC
FlashAddress = FLASH_BTLDR_FIRMWARE_START_ADDRESS + FLASH_BTLDR_HEADER_SIZE;
char Byte;
@ -868,14 +907,14 @@ int BootloaderCheckFlashBootloaderData()
if(ComputedCRC32 == CRC32)
{
printf("CRC32 matches. Computed:[0x%x] - Expected:[0x%x]\n",ComputedCRC32,CRC32);
printf("Flash check success. Firmware is valid\n");
// printf("CRC32 matches. Computed:[0x%x] - Expected:[0x%x]\n",ComputedCRC32,CRC32);
// printf("Flash check success. Firmware is valid\n");
return RET_OK;
}
else
{
printf("CRC32 mismatch. Computed:[0x%x] - Expected:[0x%x]\n",ComputedCRC32,CRC32);
printf("Flash check failed.\n");
// printf("CRC32 mismatch. Computed:[0x%x] - Expected:[0x%x]\n",ComputedCRC32,CRC32);
// printf("Flash check failed.\n");
return RET_ERROR;
}
@ -916,4 +955,24 @@ int BootloaderBytesToInt(unsigned char *Bytes)
Output += Bytes[3];
return Output;
}
int BootloaderIntToBytes(unsigned char *Buf, unsigned int Input)
{
if(Buf == 0)
{
return 0;
}
Buf[3] = (unsigned char)(Input & 0xFF);
Input >>= 8;
Buf[2] = (unsigned char)(Input & 0xFF);
Input >>= 8;
Buf[1] = (unsigned char)(Input & 0xFF);
Input >>= 8;
Buf[0] = (unsigned char)(Input & 0xFF);
Input >>= 8;
return 1;
}

46
ChaletLora.X/Source/BootloaderInterface.h
View File

@ -12,6 +12,47 @@
#define BOOTLOADER_FILE_HEADER_CODE (int)0xBAADBEEF
#define BOOTLOADER_RECORD_HEADER_CODE (int)0xDEADBEEF
#define BOOTLOADER_FLASH_FIRMWARE_VALIDATOR 0xA8
#define BOOTLOADER_ENTER_UPLOAD_MODE_VALIDATOR 0x5A
typedef struct
{
unsigned char BootloaderAction;
unsigned char BootloaderActionValidator;
}stBootloaderFlags_t;
typedef struct
{
unsigned int Firmwareflags;
unsigned int NbRecords;
unsigned int FirmwareSize;
unsigned int Versioncode;
unsigned int DataCRC32;
}stStoredBootloaderInfo;
extern stBootloaderFlags_t mBootloaderFlags;
stStoredBootloaderInfo mStoredBootloaderInfo;
enum eBootloaderFlagsIndex
{
BOOTLOADER_FLAGS_ACTION_FLAG_INDEX = 0,
BOOTLOADER_FLAGS_ACTION_VALIDATOR_INDEX,
BOOTLOADER_FLAGS_MAX_INDEX = 12
};
enum eBootloaderActionFlagValues
{
BOOTLOADER_ACTION_JUMP_TO_APP_VALUE = 0,
BOOTLOADER_ACTION_FLASH_FIRMWARE_VALUE = 1,
BOOTLOADER_ACTION_ENTER_UPDATE_MODE_VALUE = 2,
BOOTLOADER_ACTION_MAX_VALUE
};
enum eBootloaderStates
{
@ -105,7 +146,8 @@ enum eBootloaderStateMachineCmds
BOOTLOADER_SM_UPLOAD_FINISHED_CMD,
BOOTLOADER_SM_EXECUTE_UPGRAGE_CMD,
BOOTLOADER_SM_INVALID_CRC_CMD,
BOOTLOADER_SM_CHECK_FLASH_CMD
BOOTLOADER_SM_CHECK_FLASH_CMD,
BOOTLOADER_SM_GET_FIRMWARE_DATA_CMD
};
@ -132,7 +174,7 @@ int BootloaderCheckFlashBootloaderData();
int BootloaderPrintFlashData();
int BootloaderBytesToInt(unsigned char *Bytes);
int BootloaderIntToBytes(unsigned char *Buf, unsigned int Input);

22
ChaletLora.X/Source/BootloaderProtocol.c
View File

@ -301,10 +301,10 @@ void BootloaderProtocolSendFrame(unsigned char Cmd, int Size)
nibble = (char)(CRC &0x000000FF);
*CRCPtr++ = nibble;
// *CRCPtr++ = 0xBA;
// *CRCPtr++ = 0xAD;
// *CRCPtr++ = 0xCA;
// *CRCPtr++ = 0xFE;
// *CRCPtr++ = 0xBA;
// *CRCPtr++ = 0xAD;
// *CRCPtr++ = 0xCA;
// *CRCPtr++ = 0xFE;
SendBootloaderData(&BootloaderBuffer[0],Size + PROTOCOL_INFO_DATA_SIZE);
}
@ -409,4 +409,18 @@ void BootloaderProtocolSendFlashCheckResult(char Result)
*DataPtr++ = Result;
BootloaderProtocolSendFrame(BOOTLOADER_CHECK_FLASH_FIRMW_INTEGRITY_RESPONSE,1);
}
void BootloaderProtocolSendStoredFirmwareInfoResponse(unsigned char* FirmwareData, int size)
{
char* DataPtr = BootloaderProtocolGetDataBufferPtr();
int i = 0;
for(i = 0; i < size; i++)
{
*DataPtr++ = *FirmwareData++;
}
BootloaderProtocolSendFrame(BOOTLOADER_GET_STORED_FIRMWARE_INFO_RESPONSE,size);
}

1
ChaletLora.X/Source/BootloaderProtocol.h
View File

@ -118,5 +118,6 @@ void BootloaderProtocolSendDataChunkResult(char ErrorCode, int ChunkValue);
void BootloaderProtocolSendBootloaderState(char State);
void BootloaderProtocolSendFirmwareUploadResult(char Result);
void BootloaderProtocolSendFlashCheckResult(char Result);
void BootloaderProtocolSendStoredFirmwareInfoResponse(unsigned char* FirmwareData, int size);
#endif

2
ChaletLora.X/Source/FlashMapping.h
View File

@ -20,6 +20,8 @@
#define FLASH_BTLDR_FIRMWARE_START_ADDRESS 0x180000
#define FLASH_BTLDR_FIRMWARE_LAST_64K_SECTOR_ADD 0x1F0000
#define FLASH_BTLDR_FLAGS_ADDRESS 0x000000
#define FLASH_BTLDR_HEADER_SIZE 24

2
ChaletLora.X/Source/ProtocolDefs.h
View File

@ -323,6 +323,8 @@ enum BOOTLOADER_CMDS
BOOTLOADER_SEND_FLASH_DATA_CHUNK_RESPONSE,
BOOTLOADER_CHECK_FLASH_FIRMW_INTEGRITY_REQUEST,
BOOTLOADER_CHECK_FLASH_FIRMW_INTEGRITY_RESPONSE,
BOOTLOADER_GET_STORED_FIRMWARE_INFO_REQUEST,
BOOTLOADER_GET_STORED_FIRMWARE_INFO_RESPONSE,
MAX_BOOTLOADER_CMD
};

BIN
ChaletLora.X/dist/ChaletDuinoV2_795F512H_/production/ChaletLora.X.production.elf vendored
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17195
ChaletLora.X/dist/ChaletDuinoV2_795F512H_/production/ChaletLora.X.production.hex vendored
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File diff suppressed because it is too large Load Diff

3297
ChaletLora.X/dist/ChaletDuinoV2_795F512H_/production/ChaletLora.X.production.map vendored
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4
ChaletLora.X/nbproject/Makefile-genesis.properties
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@ -1,5 +1,5 @@
#
#Tue Sep 07 10:50:35 EDT 2021
#Mon Sep 20 15:45:16 EDT 2021
default.languagetoolchain.version=2.41
ChaletDuino_775F512H_.languagetoolchain.version=1.33
default.Pack.dfplocation=C\:\\Users\\JF\\.mchp_packs\\Microchip\\PIC32MX_DFP\\1.2.228
@ -7,7 +7,7 @@ conf.ids=default,ChaletDuino_775F512H_,ChaletDuinoV2_795F512H_
default.languagetoolchain.dir=C\:\\Program Files\\Microchip\\xc32\\v2.41\\bin
ChaletDuino_775F512H_.Pack.dfplocation=C\:\\Program Files (x86)\\Microchip\\MPLABX\\v5.40\\packs\\Microchip\\PIC32MX_DFP\\1.3.231
ChaletDuinoV2_795F512H_.Pack.dfplocation=C\:\\Program Files (x86)\\Microchip\\MPLABX\\v5.40\\packs\\Microchip\\PIC32MX_DFP\\1.3.231
configurations-xml=770efc8c94a6281a3a2c647b3673efaf
configurations-xml=cd1eb0091a6192efa5b728f7adc16270
default.com-microchip-mplab-nbide-toolchainXC32-XC32LanguageToolchain.md5=a5745c99cb5a5032f17cfaf0ff720282
com-microchip-mplab-nbide-embedded-makeproject-MakeProject.md5=9db8f8a224aa17d0023ea7f468f871dc
ChaletDuino_775F512H_.languagetoolchain.dir=C\:\\Program Files\\Microchip\\xc32\\v1.33\\bin

66
ChaletLora.X/nbproject/configurations.xml
View File

@ -114,8 +114,8 @@
<logicalFolder name="LinkerScript"
displayName="Linker Files"
projectFiles="true">
<itemPath>elf32pic32mx.x</itemPath>
<itemPath>procdefs.ld</itemPath>
<itemPath>elf32pic32mx.x</itemPath>
</logicalFolder>
<logicalFolder name="SourceFiles"
displayName="Source Files"
@ -962,38 +962,6 @@
<C32Global>
</C32Global>
</item>
<item path="elf32pic32mx.x" ex="true" overriding="false">
<C32>
</C32>
<C32-AR>
</C32-AR>
<C32-AS>
</C32-AS>
<C32-CO>
</C32-CO>
<C32-LD>
</C32-LD>
<C32CPP>
</C32CPP>
<C32Global>
</C32Global>
</item>
<item path="procdefs.ld" ex="true" overriding="false">
<C32>
</C32>
<C32-AR>
</C32-AR>
<C32-AS>
</C32-AS>
<C32-CO>
</C32-CO>
<C32-LD>
</C32-LD>
<C32CPP>
</C32CPP>
<C32Global>
</C32Global>
</item>
</conf>
<conf name="ChaletDuinoV2_795F512H_" type="2">
<toolsSet>
@ -1476,37 +1444,7 @@
<C32Global>
</C32Global>
</item>
<item path="elf32pic32mx.x" ex="false" overriding="false">
<C32>
</C32>
<C32-AR>
</C32-AR>
<C32-AS>
</C32-AS>
<C32-CO>
</C32-CO>
<C32-LD>
</C32-LD>
<C32CPP>
</C32CPP>
<C32Global>
</C32Global>
</item>
<item path="procdefs.ld" ex="false" overriding="false">
<C32>
</C32>
<C32-AR>
</C32-AR>
<C32-AS>
</C32-AS>
<C32-CO>
</C32-CO>
<C32-LD>
</C32-LD>
<C32CPP>
</C32CPP>
<C32Global>
</C32Global>
<item path="procdefs.ld" ex="true" overriding="false">
</item>
</conf>
</confs>

13
ChaletLora.X/procdefs.ld
View File

@ -13,7 +13,7 @@ OPTIONAL("libmchp_peripheral_32MX795F512H.a")
* For interrupt vector handling
*************************************************************************/
PROVIDE(_vector_spacing = 0x00000001);
_ebase_address = 0x9D002000; /*0x9FC01000;*/
_ebase_address = 0x9D004000; /*0x9FC01000;*/
/*************************************************************************
* Memory Address Equates
@ -49,9 +49,14 @@ MEMORY
/*kseg0_boot_mem : ORIGIN = 0x9FC00490, LENGTH = 0x970*/
/*kexception_mem : ORIGIN = 0x9FC01000, LENGTH = 0x1000*/
kseg0_program_mem (rx) : ORIGIN = 0x9D003800, LENGTH = 0x7C7FF /*App code. MAX address = 9D07FFFF */
kseg0_boot_mem : ORIGIN = 0x9D003000, LENGTH = 0x7F0 /* startup code */
exception_mem : ORIGIN = 0x9D002000, LENGTH = 0x1000
/* kseg0_program_mem (rx) : ORIGIN = 0x9D003800, LENGTH = 0x7C7FF*/ /*App code. MAX address = 9D07FFFF */
/* kseg0_boot_mem : ORIGIN = 0x9D003000, LENGTH = 0x7F0*/ /* startup code */
/* exception_mem : ORIGIN = 0x9D002000, LENGTH = 0x1000*/
kseg0_program_mem (rx) : ORIGIN = 0x9D005800, LENGTH = 0x7A7FF /*App code. MAX address = 9D07FFFF */
kseg0_boot_mem : ORIGIN = 0x9D005000, LENGTH = 0x7F0 /* startup code */
exception_mem : ORIGIN = 0x9D004000, LENGTH = 0x1000
kseg1_boot_mem : ORIGIN = 0xBFC00000, LENGTH = 0x490
debug_exec_mem : ORIGIN = 0xBFC02000, LENGTH = 0xFF0
config3 : ORIGIN = 0xBFC02FF0, LENGTH = 0x4