-
-#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
+/*! \file jtag.h
+ \author Travis Goodspeed
+ \brief JTAG handler functions.
+*/
+
+#ifndef JTAG_H
+#define JTAG_H
+
+#include "app.h"
+
+#define JTAG 0x10
+
+//! All states in the JTAG TAP
+enum eTAPState
+{
+ UNKNOWN = 0x0000,
+ TEST_LOGIC_RESET = 0x0001,
+ RUN_TEST_IDLE = 0x0002,
+ SELECT_DR_SCAN = 0x0004,
+ CAPTURE_DR = 0x0008,
+ SHIFT_DR = 0x0010,
+ EXIT1_DR = 0x0020,
+ PAUSE_DR = 0x0040,
+ EXIT2_DR = 0x0080,
+ UPDATE_DR = 0x0100,
+ SELECT_IR_SCAN = 0x0200,
+ CAPTURE_IR = 0x0400,
+ SHIFT_IR = 0x0800,
+ EXIT1_IR = 0x1000,
+ PAUSE_IR = 0x2000,
+ EXIT2_IR = 0x4000,
+ UPDATE_IR = 0x8000
+};
+
+extern unsigned char jtagid;
+
+//! the global state of the JTAG TAP
+extern enum eTAPState jtag_state;
+
+//! Returns true if we're in any of the data register states
+int in_dr();
+//! Returns true if we're in any of the instruction register states
+int in_ir();
+//! Returns true if we're in run-test-idle state
+int in_run_test_idle();
+//! Check the state
+int in_state(enum eTAPState state);
+
+//! jtag_trans_n flags
+enum eTransFlags
+{
+ MSB = 0x0,
+ LSB = 0x1,
+ NOEND = 0x2,
+ NORETIDLE = 0x4
+};
//! Shift n bytes.
-unsigned long jtagtransn(unsigned long word,
- unsigned int bitcount);
+uint32_t jtag_trans_n(uint32_t word,
+ uint8_t bitcount,
+ enum eTransFlags flags);
+//! Shift 8 bits in/out of selected register
+uint8_t jtag_trans_8(uint8_t in);
+//! Shift 16 bits in/out of selected register
+uint16_t jtag_trans_16(uint16_t in);
//! Shift 8 bits of the IR.
-unsigned char jtag_ir_shift8(unsigned char);
+uint8_t jtag_ir_shift_8(uint8_t in);
//! Shift 16 bits of the DR.
-unsigned int jtag_dr_shift16(unsigned int);
+uint16_t jtag_dr_shift_16(uint16_t in);
//! Stop JTAG, release pins
void jtag_stop();
-
-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);
+//! Setup the JTAG pin directions.
+void jtag_setup();
+//! Ratchet Clock Down and Up
+void jtag_tcktock();
+//! Reset the target device
+void jtag_reset_target();
+//! TAP RESET
+void jtag_reset_tap();
+//! Get into the Shift-IR or Shift-DR
+void jtag_shift_register();
+//! Get into Capture-IR state
+void jtag_capture_ir();
+//! Get into Capture-DR state
+void jtag_capture_dr();
+//! Get to Run-Test-Idle without going through Test-Logic-Reset
+void jtag_run_test_idle();
+//! Detect instruction register width
+uint16_t jtag_detect_ir_width();
+//! Detects how many TAPs are in the JTAG chain
+uint16_t jtag_detect_chain_length();
+//! Gets device ID for specified chip in the chain
+uint32_t jtag_get_device_id(int chip);
//Pins. Both SPI and JTAG names are acceptable.
//#define SS BIT0
#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 SETMOSI SPIOUT|=MOSI
+#define CLRMOSI SPIOUT&=~MOSI
+#define SETCLK SPIOUT|=SCK
+#define CLRCLK SPIOUT&=~SCK
+#define READMISO (SPIIN&MISO?1:0)
+#define SETTMS SPIOUT|=TMS
+#define CLRTMS SPIOUT&=~TMS
+#define SETTCK SPIOUT|=TCK
+#define CLRTCK SPIOUT&=~TCK
+#define SETTDI SPIOUT|=TDI
+#define CLRTDI SPIOUT&=~TDI
#define SETTST P4OUT|=TST
#define CLRTST P4OUT&=~TST
#define CLRTCLK CLRTDI
extern int savedtclk;
-#define SAVETCLK savedtclk=P5OUT&TCLK;
-#define RESTORETCLK if(savedtclk) P5OUT|=TCLK; else P5OUT&=~TCLK
-
-
-//16-bit MSP430 JTAG commands, bit-swapped
-#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
-
+#define SAVETCLK savedtclk=SPIOUT&TCLK;
+#define RESTORETCLK if(savedtclk) SPIOUT|=TCLK; else SPIOUT&=~TCLK
+
+//JTAG commands
+#define JTAG_IR_SHIFT 0x80
+#define JTAG_DR_SHIFT 0x81
+#define JTAG_RESET_TAP 0x82
+#define JTAG_RESET_TARGET 0x83
+#define JTAG_DETECT_IR_WIDTH 0x84
+#define JTAG_DETECT_CHAIN_LENGTH 0x85
+#define JTAG_GET_DEVICE_ID 0x86
+//#define JTAG_DR_SHIFT20 0x91
+
+extern app_t const jtag_app;
+
+#endif
projects / goodfet / blobdiff