Hi Jan,

do you have the manual of the DM365 CPU available?
It is needed to get an idea of the ICEPick initialization. Otherwise we are just guessing what needs to be done.
In fact it will be similar to the OMAP init but not identical.


Best regards
Alex

Hi Jan,

Just for clarification: This is not a support forum, so you can not expect to get a high priority when posting such problems here.
It is on our list to have a look at this but I can not give you a schedule yet.


Best regards
Alex

Hi xhpohanka,

Please try this script which I used in DM365 system. I have no DM368 board.
EMU0 and EMU1 should be high.


/*********************************************************************
*
* _ResetViaIcePick
*
* Function description
* Reset CPU core via Ice Pick.
* This function can be used if the reset pin of the CPU is
* not connected to the reset pin of the JTAG connector
*/
void _ResetViaIcePick(void) {
int v;
int BitPos;
//
// Setup JTAG config to "talk" to the ICEPick, so we can use the JTAG API functions
//
JTAG_DRPre = 2;
JTAG_DRPost = 0;
JTAG_IRPre = 8;
JTAG_IRPost = 0;
JTAG_IRLen = 6;
//
// Perform reset via ICEPick system control register, by setting the SysReset bit
//
JTAG_StoreIR(2); // Cmd: ROUTER
v = 0x01000000; // Read SYS_CNTL
JTAG_StoreDR(v, 32);
BitPos = JTAG_StoreDR(v, 32);
v = JTAG_GetU32(BitPos);
v &= 0x00FFFFFF;
v |= 0x81000001; // Write SYS_CNTL and set SysReset bit
JTAG_StoreDR(v, 32);
v &= 0xFFFFFFFE;
v &= 0x00FFFFFF;
v |= 0x81000000; // Write SYS_CNTL and clear SysReset bit
JTAG_StoreDR(v, 32);
//
// Setup JTAG config to "talk" to the Cortex-R4 again
//
JTAG_IRPre=4;
JTAG_DRPre=1;
JTAG_IRPost=6;
JTAG_DRPost=1;
JTAG_IRLen=4;
}

/*********************************************************************
*
* _WriteIceReg
*
* Function description
* Writes an Ice-Breaker regsiter
*/
void _WriteIceReg(int Reg, int v) {
__int64 ScanData;

JTAG_StoreIR(0x2); // Scan chain select
JTAG_StoreClocks(1);
JTAG_StoreDR(2, 5); // Scan chain 2 is Ice breaker
JTAG_StoreClocks(1);
JTAG_StoreIR(0xC); // Intest
JTAG_StoreClocks(1);
ScanData = v;
ScanData |= (Reg << 32);
ScanData |= (1 << 37);
JTAG_StoreDR(ScanData, 38);
JTAG_WriteClocks(100);
}

/*********************************************************************
*
* _ReadIceReg
*
* Function description
* Reads an Ice-Breaker register
*/
int _ReadIceReg(int Reg) {
__int64 ScanData;
int BitPos;
int v;

JTAG_StoreIR(0x2); // Scan chain select
JTAG_StoreClocks(1);
JTAG_StoreDR(2, 5); // Scan chain 2 is Ice breaker
JTAG_StoreClocks(1);
JTAG_StoreIR(0xC); // Intest
JTAG_StoreClocks(1);
ScanData = v;
ScanData |= (Reg << 32);
ScanData |= (0 << 37);
JTAG_StoreDR(ScanData, 38);
JTAG_StoreClocks(100);
BitPos = JTAG_StoreDR(ScanData, 38);
JTAG_WriteClocks(100);
v = JTAG_GetU32(BitPos);
return v;
}

/*********************************************************************
*
* _InitIcePick
*
* Function description
* Writes an Ice-Breaker regsiter
*/
void _InitIcePick(void) {
unsigned int aDevice[3];
int BitPos;
int v;
int i;

Report("J-Link script: Init ICEPick");
// JTAG_ResetPin = 0;
// SYS_Sleep(50);
// JTAG_ResetPin = 1;
// SYS_Sleep(50);
JTAG_Reset(); // Perform TAP reset and J-Link JTAG auto-detection
//if (JTAG_TotalIRLen != 6) {
// MessageBox("IRLen mismatch");
//}
JTAG_WriteIR(4);
BitPos = JTAG_WriteDR(0x00000000, 32);
v = JTAG_GetU32(BitPos);
if (v != 0x8B83E02F) {
MessageBox1("Can not find ICE-Pick (IDCODE mismatch). Expected 0x8B83E02F, found: ", v);
}
JTAG_DRPre = 0;
JTAG_DRPost = 0;
JTAG_IRPre = 0;
JTAG_IRPost = 0;
JTAG_IRLen = 6;
JTAG_Speed = 1000;
//
// Put ARM core in scan chain
//
JTAG_WriteIR(7); // CONNECT
JTAG_WriteDR(0x89, 8); // D7: WRITEENABLE = 1,D3-D0: Key = 0x9
JTAG_WriteIR(2); // ROUTER
JTAG_WriteDR(0x81000082, 32); // Write SYS_CNTL = 0x000082 D7:KEEPPOWEREDINTLR = 1, D3-D1:DEVICETYPE = 001b Emulator
JTAG_WriteDR(0xA018206F, 32); // Write SDTAP0 = 0x18206F D20:INHIBIT SLEEP = 1,
JTAG_WriteDR(0xA018216F, 32);
JTAG_WriteIR(0x3F); // Bypass
JTAG_WriteClocks(10);
//
// Configure JTAG chain, so J-Link knows to which devices it has to "talk"
//
JTAG_IRPre=0;
JTAG_DRPre=0;
JTAG_IRPost=6;
JTAG_DRPost=1;
JTAG_IRLen=4;
CPU=ARM926EJS;
JTAG_AllowTAPReset=0;
}

/*********************************************************************
*
* InitEMU
*/
void InitEMU(void) {
EMU_ETB_IsPresent = 1; // Tells the J-Link DLL that the connected device has an ETB
EMU_ETB_UseETB = 1; // Make ETB usable in IDEs (e.g. IAR EWARM)
}

/*********************************************************************
*
* ResetTarget
*/
void ResetTarget(void) {
__int64 v;
int BitPos;

Report("J-Link script: Reset");
//
// Reset core via ResetPin
//
JTAG_ResetPin = 0;
SYS_Sleep(50);
JTAG_TRSTPin = 0;
JTAG_TRSTPin = 1;
SYS_Sleep(50);
JTAG_ResetPin = 1;
SYS_Sleep(50);
_InitIcePick();
_WriteIceReg(0,3); // Set Debug request
_WriteIceReg(2,1); // Write vector catch register, to halt core immdeiately after reset
// _ResetViaIcePick();
JTAG_ResetPin = 0;
SYS_Sleep(50);
JTAG_ResetPin = 1;
SYS_Sleep(50);
}

/*********************************************************************
*
* InitTarget
*/
void InitTarget(void) {
int v;

Report("DM365 J-Link script"); // To avoid message box, you can alternatively use Report().
_InitIcePick();
//
// Halt the CPU to verify it can be halted. If it can not, let's reset the CPU
//
_WriteIceReg(0,3);
v = _ReadIceReg(1);
if ((v & 9) != 9) {
Report("J-Link script: Could not halt CPU, Executing Reset");
ResetTarget(); // Reset core via ResetPin
}
}