X-Git-Url: http://git.rot13.org/?p=goodfet;a=blobdiff_plain;f=firmware%2Fapps%2Fjtag%2Fjtag430x2.c;h=965c2626eef287344aaff2bed93d6b53dda390a4;hp=0de9a448acc2a5483d24fd7e9dfeffe9cdcff0a9;hb=1283fdb830f9ecd0e27e10ef66927562aff674a7;hpb=0fb25630e9970a4e6d18e190c484f654490565b0

diff --git a/firmware/apps/jtag/jtag430x2.c b/firmware/apps/jtag/jtag430x2.c
index 0de9a44..965c262 100644
--- a/firmware/apps/jtag/jtag430x2.c
+++ b/firmware/apps/jtag/jtag430x2.c
@@ -21,7 +21,6 @@ unsigned char jtag430x2_jtagid(){
 //! Start JTAG, take pins
 unsigned char jtag430x2_start(){
   jtagsetup();
-  P1OUT^=1;
   
   //Known-good starting position.
   //Might be unnecessary.
@@ -34,6 +33,7 @@ unsigned char jtag430x2_start(){
   CLRRST;
   delay(10);
   CLRTST;
+
   delay(5);
   SETTST;
   msdelay(5);
@@ -46,11 +46,156 @@ unsigned char jtag430x2_start(){
   return jtag430x2_jtagid();
 }
 
+//! Grab the core ID.
+unsigned int jtag430_coreid(){
+  jtag_ir_shift8(IR_COREIP_ID);
+  return jtag_dr_shift16(0);
+}
+
+//! Grab the device ID.
+unsigned long jtag430_deviceid(){
+  jtag_ir_shift8(IR_DEVICE_ID);
+  return jtag_dr_shift20(0);
+}
+
+
+//! Write data to address
+void jtag430x2_writemem(unsigned long adr,
+			unsigned int data){
+  jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
+  if(jtag_dr_shift16(0) & 0x0301){
+    CLRTCLK;
+    jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
+    if(adr>=0x100)
+      jtag_dr_shift16(0x0500);//word mode
+    else
+      jtag_dr_shift16(0x0510);//byte mode
+    jtag_ir_shift8(IR_ADDR_16BIT);
+    jtag_dr_shift20(adr);
+    
+    SETTCLK;
+    
+    jtag_ir_shift8(IR_DATA_TO_ADDR);
+    jtag_dr_shift16(data);//16 word
+
+    CLRTCLK;
+    jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
+    jtag_dr_shift16(0x0501);
+    SETTCLK;
+
+    CLRTCLK;
+    SETTCLK;
+    //init state
+  }else{
+    while(1) P1OUT^=1; //loop if locked up
+  }
+}
+
+//! Read data from address
+unsigned int jtag430x2_readmem(unsigned long adr){
+  unsigned int toret=0;
+  
+  do{
+    jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
+  }while(!(jtag_dr_shift16(0) & 0x0301));
+  
+  if(jtag_dr_shift16(0) & 0x0301){
+    // Read Memory
+    CLRTCLK;
+    jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
+    if(adr>=0x100){
+      jtag_dr_shift16(0x0501);//word read
+    }else{
+      jtag_dr_shift16(0x0511);//byte read
+    }
+    
+    jtag_ir_shift8(IR_ADDR_16BIT);
+    jtag_dr_shift20(adr); //20
+
+    jtag_ir_shift8(IR_DATA_TO_ADDR);
+    SETTCLK;
+    CLRTCLK;
+    toret = jtag_dr_shift16(0x0000);
+    
+    SETTCLK;
+    
+    //Cycle a bit.
+    CLRTCLK;
+    SETTCLK;
+  }else{
+    return 0xBABE;
+  }
+  
+  return toret;
+}
+
+//! Syncs a POR.
+unsigned int jtag430x2_syncpor(){
+  jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
+  jtag_dr_shift16(0x1501); //JTAG mode
+  while(!(jtag_dr_shift16(0) & 0x200));
+  return jtag430x2_por();
+}
+
+//! Executes an MSP430X2 POR
+unsigned int jtag430x2_por(){
+  unsigned int i = 0;
+  
+  // tick
+  CLRTCLK;
+  SETTCLK;
+
+  jtag_ir_shift8(IR_CNTRL_SIG_16BIT);
+  jtag_dr_shift16(0x0C01);
+  jtag_dr_shift16(0x0401);
+  
+  //cycle
+  for (i = 0; i < 10; i++){
+    CLRTCLK;
+    SETTCLK;
+  }
+  
+  jtag_dr_shift16(0x0501);
+  
+  // tick
+  CLRTCLK;
+  SETTCLK;
+  
+  
+  // Disable WDT
+  jtag430x2_writemem(0x015C, 0x5A80);
+  
+  // check state
+  jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
+  if(jtag_dr_shift16(0) & 0x0301)
+    return(1);//ok
+  
+  return 0;//error
+}
+
 
-//! Handles classic MSP430 JTAG commands.  Forwards others to JTAG.
+//! Check the fuse.
+unsigned int jtag430x2_fusecheck(){
+  int i;
+  for(i=0;i<3;i++){
+    jtag_ir_shift8(IR_CNTRL_SIG_CAPTURE);
+    if(jtag_dr_shift16(0xAAAA)==0x5555)
+      return 1;//blown
+  }
+  return 0;//unblown
+}
+
+
+//! Handles MSP430X2 JTAG commands.  Forwards others to JTAG.
 void jtag430x2handle(unsigned char app,
-		   unsigned char verb,
-		   unsigned char len){
+		     unsigned char verb,
+		     unsigned char len){
+  register char blocks;
+  
+  unsigned int i,val;
+  unsigned long at;
+  
+  //jtag430_resettap();
   
   switch(verb){
   case START:
@@ -58,17 +203,76 @@ void jtag430x2handle(unsigned char app,
     do cmddata[0]=jtag430x2_start();
     while(cmddata[0]==00 || cmddata[0]==0xFF);
     
-    //TAP setup, fuse check
-    //jtag430_resettap();
+    //MSP430 or MSP430X
+    if(jtagid==MSP430JTAGID){ 
+      jtag430mode=MSP430MODE;
+      drwidth=16;
+    }else if(jtagid==MSP430X2JTAGID){
+      jtag430mode=MSP430X2MODE;
+      drwidth=20;
+    }else{
+      txdata(app,NOK,1);
+      return;
+    }
+    
+    jtag430x2_fusecheck();
+        
+    jtag430x2_syncpor();
+    
+    jtag430_resettap();
+    
     txdata(app,verb,1);
     break;
+  case JTAG430_READMEM:
+  case PEEK:
+    blocks=(len>4?cmddata[4]:1);
+    at=cmddatalong[0];
+    
+    /*
+    cmddataword[0]=jtag430x2_readmem(at);
+    txdata(app,verb,2);
+    break;
+    */
+    
+    len=0x80;
+    serial_tx(app);
+    serial_tx(verb);
+    serial_tx(len);
+    
+    while(blocks--){
+      for(i=0;i<len;i+=2){
+	jtag430_resettap();
+	delay(10);
+	
+	val=jtag430x2_readmem(at);
+		
+	at+=2;
+	serial_tx(val&0xFF);
+	serial_tx((val&0xFF00)>>8);
+      }
+    }
+    
+    break;
+  case JTAG430_COREIP_ID:
+    cmddataword[0]=jtag430_coreid();
+    txdata(app,verb,2);
+    break;
+  case JTAG430_DEVICE_ID:
+    cmddatalong[0]=jtag430_deviceid();
+    txdata(app,verb,4);
+    break;
   case JTAG430_HALTCPU:
+    //jtag430x2_haltcpu();
+    break;
   case JTAG430_RELEASECPU:
   case JTAG430_SETINSTRFETCH:
-  case JTAG430_READMEM:
-  case PEEK:
   case JTAG430_WRITEMEM:
   case POKE:
+    jtag430x2_writemem(cmddatalong[0],
+		       cmddataword[2]);
+    cmddataword[0]=jtag430x2_readmem(cmddatalong[0]);
+    txdata(app,verb,2);
+    break;
   case JTAG430_WRITEFLASH:
   case JTAG430_ERASEFLASH:
   case JTAG430_SETPC: