jtagtransn reworked. testing looks good so far.

[goodfet] / firmware / include / jtag.h

diff --git a/firmware/include/jtag.h b/firmware/include/jtag.h
index 6f9b6dc..aab18fe 100644 (file)
--- a/firmware/include/jtag.h
+++ b/firmware/include/jtag.h
@@ -1,6 +1,167 @@
+/*! \file jtag.h
+  \author Travis Goodspeed
+  \brief JTAG handler functions.
+*/
 
+#ifndef JTAG_H
+#define JTAG_H
 
+#include <signal.h>
+#include <io.h>
+#include <iomacros.h>
+
+extern unsigned int drwidth;
+
+#define MSP430MODE 0
+#define MSP430XMODE 1
+#define MSP430X2MODE 2
+extern unsigned int jtag430mode;
+
+// Generic Commands
+
+//! Shift n bytes.
+unsigned long jtagtransn(unsigned long word,
+                        unsigned char bitcount,
+             unsigned char flags);
+//! Shift the address width.
+unsigned long jtag_dr_shiftadr(unsigned long in);
 //! Shift 8 bits of the IR.
 unsigned char jtag_ir_shift8(unsigned char);
 //! Shift 16 bits of the DR.
-unsigned int jtag_dr_shift16(unsigned int in);
+unsigned int jtag_dr_shift16(unsigned int);
+//! Shift 20 bits of the DR, MSP430 specific.
+unsigned long jtag_dr_shift20(unsigned long in);
+//! Stop JTAG, release pins
+void jtag_stop();
+
+//! Setup the JTAG pin directions.
+void jtagsetup();
+
+// JTAG430 Commands
+
+//! Start JTAG, unique to the '430.
+void jtag430_start();
+//! Reset the TAP state machine, check the fuse.
+void jtag430_resettap();
+
+//! Defined in jtag430asm.S
+void jtag430_tclk_flashpulses(int);
+
+//High-level Macros follow
+//! Write data to address.
+void jtag430_writemem(unsigned int adr, unsigned int data);
+//! Read data from address
+unsigned int jtag430_readmem(unsigned int adr);
+//! Halt the CPU
+void jtag430_haltcpu();
+//! Release the CPU
+void jtag430_releasecpu();
+//! Set CPU to Instruction Fetch
+void jtag430_setinstrfetch();
+//! Set the program counter.
+void jtag430_setpc(unsigned int adr);
+//! Write data to address.
+void jtag430_writeflash(unsigned int adr, unsigned int data);
+
+//Pins.  Both SPI and JTAG names are acceptable.
+//#define SS   BIT0
+#define MOSI BIT1
+#define MISO BIT2
+#define SCK  BIT3
+
+#define TMS BIT0
+#define TDI BIT1
+#define TDO BIT2
+#define TCK BIT3
+
+#define TCLK TDI
+
+//These are not on P5
+#define RST BIT6
+#define TST BIT0
+
+//This could be more accurate.
+//Does it ever need to be?
+#define JTAGSPEED 20
+#define JTAGDELAY(x) delay(x)
+
+#define SETMOSI P5OUT|=MOSI
+#define CLRMOSI P5OUT&=~MOSI
+#define SETCLK P5OUT|=SCK
+#define CLRCLK P5OUT&=~SCK
+#define READMISO (P5IN&MISO?1:0)
+#define SETTMS P5OUT|=TMS
+#define CLRTMS P5OUT&=~TMS
+#define SETTCK P5OUT|=TCK
+#define CLRTCK P5OUT&=~TCK
+#define SETTDI P5OUT|=TDI
+#define CLRTDI P5OUT&=~TDI
+
+#define SETTST P4OUT|=TST
+#define CLRTST P4OUT&=~TST
+#define SETRST P2OUT|=RST
+#define CLRRST P2OUT&=~RST
+
+#define SETTCLK SETTDI
+#define CLRTCLK CLRTDI
+
+extern int savedtclk;
+#define SAVETCLK savedtclk=P5OUT&TCLK;
+#define RESTORETCLK if(savedtclk) P5OUT|=TCLK; else P5OUT&=~TCLK
+
+//Replace every "CLRTCK SETTCK" with this.
+#define TCKTOCK CLRTCK,SETTCK
+
+
+//16-bit MSP430 JTAG commands, bit-swapped
+//Rewrite these with MSP430 prefix.
+#define IR_CNTRL_SIG_16BIT         0xC8   // 0x13
+#define IR_CNTRL_SIG_CAPTURE       0x28   // 0x14
+#define IR_CNTRL_SIG_RELEASE       0xA8   // 0x15
+// Instructions for the JTAG Fuse
+#define IR_PREPARE_BLOW            0x44   // 0x22
+#define IR_EX_BLOW                 0x24   // 0x24
+// Instructions for the JTAG data register
+#define IR_DATA_16BIT              0x82   // 0x41
+#define IR_DATA_QUICK              0xC2   // 0x43
+// Instructions for the JTAG PSA mode
+#define IR_DATA_PSA                0x22   // 0x44
+#define IR_SHIFT_OUT_PSA           0x62   // 0x46
+// Instructions for the JTAG address register
+#define IR_ADDR_16BIT              0xC1   // 0x83
+#define IR_ADDR_CAPTURE            0x21   // 0x84
+#define IR_DATA_TO_ADDR            0xA1   // 0x85
+// Bypass instruction
+#define IR_BYPASS                  0xFF   // 0xFF
+
+//MSP430X2 unique
+#define IR_COREIP_ID               0xE8   // 0x17 
+#define IR_DEVICE_ID               0xE1   // 0x87
+
+//MSP430 or MSP430X
+#define MSP430JTAGID 0x89
+//MSP430X2 only
+#define MSP430X2JTAGID 0x91
+
+//! Syncs a POR.
+unsigned int jtag430x2_syncpor();
+//! Executes an MSP430X2 POR
+unsigned int jtag430x2_por();
+//! Power-On Reset
+void jtag430_por();
+
+//JTAG commands
+#define JTAG_IR_SHIFT 0x80
+#define JTAG_DR_SHIFT 0x81
+#define JTAG_DR_SHIFT20 0x91
+
+#define MSB         0
+#define LSB         1
+#define NOEND       2
+#define NORETIDLE   4
+
+
+//JTAG430 commands
+#include "jtag430.h"
+
+#endif