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afterburner/jtag_xsvf_player.h

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#ifndef _JTAG_XSVF_PLAYER_H_
#define _JTAG_XSVF_PLAYER_H_
/*
Arduino JTAG Player for Afterburner GAL project
---------------------------------------
Adapted from JTAG library 1.0.15 by Marcelo Jimenez
https://github.com/mrjimenez/JTAG
This port:
* improves flash size on AVR MCU (about 6.5kb vs 11kb)
* allows to allocate JTAG internal buffers temporarily within a shared
global buffer (heap). Define XSVF_HEAP to enable such feature:
uint8_t heap[900];
#define XSVF_HEAP heap
#include "jtag_xsvf_player.h"
* reduces the code to a single .h file
Use the original JTAG libray python scripts to upload XSVF files
from your PC:
./xsvf -p /dev/ttyACM0 my_file.xsvf
Arduino usage:
jtag_port_t jport;
Serial.begin(115200);
//assign jtag pins (vref pin checks the cable is plugged in)
jport.tms = 12;
jport.tdi = 2;
jport.tdo = 4;
jport.tck = 3;
jport.vref = 10;
//process XSVF data received from serial port
jtag_play_xsvf(&jport);
*/
//value bigger than 63 may cause reading errors on AVR MCUs.
#define XSVF_BUF_SIZE 62
#define XSVF_DEBUG 0
#define XSVF_CALC_CSUM 1
#define XSVF_IGNORE_NOMATCH 0
#define XCOMPLETE 0
#define XTDOMASK 1
#define XSIR 2
#define XSDR 3
#define XRUNTEST 4
#define XRESERVED_5 5
#define XRESERVED_6 6
#define XREPEAT 7
#define XSDRSIZE 8
#define XSDRTDO 9
#define XSETSDRMASKS 10
#define XSDRINC 11
#define XSDRB 12
#define XSDRC 13
#define XSDRE 14
#define XSDRTDOB 15
#define XSDRTDOC 16
#define XSDRTDOE 17
#define XSTATE 18
#define XENDIR 19
#define XENDDR 20
#define XSIR2 21
#define XCOMMENT 22
#define XWAIT 23
#define XWAITSTATE 24
#define XTRST 28
#define S_MAX_CHAIN_SIZE_BYTES 129
#define S_MAX_CHAIN_SIZE_BITS (S_MAX_CHAIN_SIZE_BYTES * 8)
#define STATE_RUN_TEST_IDLE 1
#define STATE_PAUSE_DR 6
#define STATE_PAUSE_IR 13
#define ERR_IO 1
#define ERR_XSIR_SIZE 2
#define ERR_XSDRSIZE 3
#define ERR_XENDIR 4
#define ERR_XENDDR 5
#define ERR_XSDR 6
#define ERR_INSTR_NOT_IMPLEMENTED 99
#define ERR_DR_CHECK_FAILED 101
/*
* Low nibble : TMS == 0
* High nibble: TMS == 1
*/
#define TMS_T(TMS_HIGH_STATE, TMS_LOW_STATE) (((TMS_HIGH_STATE) << 4) | (TMS_LOW_STATE))
#define XSTATE_TEST_LOGIC_RESET 0
#define XSTATE_RUN_TEST_IDLE 1
#define XSTATE_SELECT_DR_SCAN 2
#define XSTATE_CAPTURE_DR 3
#define XSTATE_SHIFT_DR 4
#define XSTATE_EXIT1_DR 5
#define XSTATE_PAUSE_DR 6
#define XSTATE_EXIT2_DR 7
#define XSTATE_UPDATE_DR 8
#define XSTATE_SELECT_IR_SCAN 9
#define XSTATE_CAPTURE_IR 10
#define XSTATE_SHIFT_IR 11
#define XSTATE_EXIT1_IR 12
#define XSTATE_PAUSE_IR 13
#define XSTATE_EXIT2_IR 14
#define XSTATE_UPDATE_IR 15
#define TMS_T00 /* STATE_TEST_LOGIC_RESET */ TMS_T(XSTATE_TEST_LOGIC_RESET, XSTATE_RUN_TEST_IDLE)
#define TMS_T01 /* STATE_RUN_TEST_IDLE */ TMS_T(XSTATE_SELECT_DR_SCAN, XSTATE_RUN_TEST_IDLE)
#define TMS_T02 /* STATE_SELECT_DR_SCAN */ TMS_T(XSTATE_SELECT_IR_SCAN, XSTATE_CAPTURE_DR)
#define TMS_T03 /* STATE_CAPTURE_DR */ TMS_T(XSTATE_EXIT1_DR, XSTATE_SHIFT_DR)
#define TMS_T04 /* STATE_SHIFT_DR */ TMS_T(XSTATE_EXIT1_DR, XSTATE_SHIFT_DR)
#define TMS_T05 /* STATE_EXIT1_DR */ TMS_T(XSTATE_UPDATE_DR, XSTATE_PAUSE_DR)
#define TMS_T06 /* STATE_PAUSE_DR */ TMS_T(XSTATE_EXIT2_DR, XSTATE_PAUSE_DR)
#define TMS_T07 /* STATE_EXIT2_DR */ TMS_T(XSTATE_UPDATE_DR, XSTATE_SHIFT_DR)
#define TMS_T08 /* STATE_UPDATE_DR */ TMS_T(XSTATE_SELECT_DR_SCAN, XSTATE_RUN_TEST_IDLE)
#define TMS_T09 /* STATE_SELECT_IR_SCAN */ TMS_T(XSTATE_TEST_LOGIC_RESET, XSTATE_CAPTURE_IR)
#define TMS_T10 /* STATE_CAPTURE_IR */ TMS_T(XSTATE_EXIT1_IR, XSTATE_SHIFT_IR)
#define TMS_T11 /* STATE_SHIFT_IR */ TMS_T(XSTATE_EXIT1_IR, XSTATE_SHIFT_IR)
#define TMS_T12 /* STATE_EXIT1_IR */ TMS_T(XSTATE_UPDATE_IR, XSTATE_PAUSE_IR)
#define TMS_T13 /* STATE_PAUSE_IR */ TMS_T(XSTATE_EXIT2_IR, XSTATE_PAUSE_IR)
#define TMS_T14 /* STATE_EXIT2_IR */ TMS_T(XSTATE_UPDATE_IR, XSTATE_SHIFT_IR)
#define TMS_T15 /* STATE_UPDATE_IR */ TMS_T(XSTATE_SELECT_DR_SCAN, XSTATE_RUN_TEST_IDLE)
#define BITSTR(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P) ( \
((uint16_t)(A) << 15) | \
((uint16_t)(B) << 14) | \
((uint16_t)(C) << 13) | \
((uint16_t)(D) << 12) | \
((uint16_t)(E) << 11) | \
((uint16_t)(F) << 10) | \
((uint16_t)(G) << 9) | \
((uint16_t)(H) << 8) | \
((uint16_t)(I) << 7) | \
((uint16_t)(J) << 6) | \
((uint16_t)(K) << 5) | \
((uint16_t)(L) << 4) | \
((uint16_t)(M) << 3) | \
((uint16_t)(N) << 2) | \
((uint16_t)(O) << 1) | \
((uint16_t)(P) << 0) )
/*
* The index of this vector is the current state. The i-th bit tells you the
* value TMS must assume in order to go to state "i".
------------------------------------------------------------------------------------------------------------
| | || F | E | D | C || B | A | 9 | 8 || 7 | 6 | 5 | 4 || 3 | 2 | 1 | 0 || HEX |
------------------------------------------------------------------------------------------------------------
| STATE_TEST_LOGIC_RESET | 0 || 0 | 0 | 0 | 0 || 0 | 0 | 0 | 0 || 0 | 0 | 0 | 0 || 0 | 0 | 0 | 1 || 0x0001 |
| STATE_RUN_TEST_IDLE | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 0 | 1 || 0xFFFD |
| STATE_SELECT_DR_SCAN | 2 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 0 || 0 | 0 | 0 | 0 || 0 | x | 1 | 1 || 0xFE03 |
| STATE_CAPTURE_DR | 3 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 0 || x | 1 | 1 | 1 || 0xFFE7 |
| STATE_SHIFT_DR | 4 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 0 || 1 | 1 | 1 | 1 || 0xFFEF |
| STATE_EXIT1_DR | 5 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 0 | 0 | x | 0 || 1 | 1 | 1 | 1 || 0xFF0F |
| STATE_PAUSE_DR | 6 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 0 | 1 | 1 || 1 | 1 | 1 | 1 || 0xFFBF |
| STATE_EXIT2_DR | 7 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || x | 0 | 0 | 0 || 1 | 1 | 1 | 1 || 0xFF0F |
| STATE_UPDATE_DR | 8 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | x || 1 | 1 | 1 | 1 || 1 | 1 | 0 | 1 || 0xFEFD |
| STATE_SELECT_IR_SCAN | 9 || 0 | 0 | 0 | 0 || 0 | 0 | x | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 0x01FF |
| STATE_CAPTURE_IR | A || 1 | 1 | 1 | 1 || 0 | x | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 0xF3FF |
| STATE_SHIFT_IR | B || 1 | 1 | 1 | 1 || 0 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 0xF7FF |
| STATE_EXIT1_IR | C || 1 | 0 | 0 | x || 0 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 0x87FF |
| STATE_PAUSE_IR | D || 1 | 1 | 0 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 0xDFFF |
| STATE_EXIT2_IR | E || 1 | x | 0 | 0 || 0 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 0x87FF |
| STATE_UPDATE_IR | F || x | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 1 | 1 || 1 | 1 | 0 | 1 || 0x7FFD |
------------------------------------------------------------------------------------------------------------
*/
#define BS00 /* STATE_TEST_LOGIC_RESET */ BITSTR( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 )
#define BS01 /* STATE_RUN_TEST_IDLE */ BITSTR( 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1 )
#define BS02 /* STATE_SELECT_DR_SCAN */ BITSTR( 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1 )
#define BS03 /* STATE_CAPTURE_DR */ BITSTR( 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1 )
#define BS04 /* STATE_SHIFT_DR */ BITSTR( 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1 )
#define BS05 /* STATE_EXIT1_DR */ BITSTR( 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1 )
#define BS06 /* STATE_PAUSE_DR */ BITSTR( 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1 )
#define BS07 /* STATE_EXIT2_DR */ BITSTR( 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1 )
#define BS08 /* STATE_UPDATE_DR */ BITSTR( 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1 )
#define BS09 /* STATE_SELECT_IR_SCAN */ BITSTR( 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 )
#define BS10 /* STATE_CAPTURE_IR */ BITSTR( 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 )
#define BS11 /* STATE_SHIFT_IR */ BITSTR( 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 )
#define BS12 /* STATE_EXIT1_IR */ BITSTR( 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 )
#define BS13 /* STATE_PAUSE_IR */ BITSTR( 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 )
#define BS14 /* STATE_EXIT2_IR */ BITSTR( 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 )
#define BS15 /* STATE_UPDATE_IR */ BITSTR( 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1 )
typedef struct xsvf_t {
uint8_t* xsvf_tdo_mask;
uint8_t* xsvf_tdi;
uint8_t* xsvf_tdo;
uint8_t* xsvf_tdo_expected;
uint8_t* xsvf_address_mask;
uint8_t* xsvf_data_mask;
uint32_t rdpos;
uint32_t wrpos;
#if XSVF_CALC_CSUM
uint32_t csum;
#endif
uint16_t instruction_counter;
uint8_t error;
uint8_t xcomplete;
uint16_t sirsize_bits;
uint16_t sirsize_bytes;
uint32_t sdrsize_bits;
uint32_t sdrsize_bytes;
uint32_t runtest;
uint8_t repeat;
uint8_t next_state;
uint8_t endir_state;
uint8_t enddr_state;
uint32_t wait_time_usecs;
uint8_t wait_start_state;
uint8_t wait_end_state;
uint8_t jtag_current_state;
} xsvf_t;
#ifdef XSVF_HEAP
// variables will be allocated on heap
uint8_t* xsvf_buf;
xsvf_t* xsvf;
uint8_t* xsvf_tms_transitions;
uint16_t* xsvf_tms_map;
#else /* XSVF_HEAP */
// variables allocated globally
uint8_t xsvf_buf[XSVF_BUF_SIZE];
uint8_t xsvf_tdo_mask[S_MAX_CHAIN_SIZE_BYTES];
uint8_t xsvf_tdi[S_MAX_CHAIN_SIZE_BYTES];
uint8_t xsvf_tdo[S_MAX_CHAIN_SIZE_BYTES];
uint8_t xsvf_tdo_expected[S_MAX_CHAIN_SIZE_BYTES];
uint8_t xsvf_address_mask[S_MAX_CHAIN_SIZE_BYTES];
uint8_t xsvf_data_mask[S_MAX_CHAIN_SIZE_BYTES];
xsvf_t xsvf_context;
xsvf_t* xsvf = &xsvf_context;
static const uint8_t xsvf_tms_transitions[] = {
TMS_T00, TMS_T01, TMS_T02, TMS_T03, TMS_T04, TMS_T05, TMS_T06, TMS_T07,
TMS_T08, TMS_T09, TMS_T10, TMS_T11, TMS_T12, TMS_T13, TMS_T14, TMS_T15,
};
static const uint16_t xsvf_tms_map[] = {
BS00, BS01, BS02, BS03, BS04, BS05, BS06, BS07,
BS08, BS09, BS10, BS11, BS12, BS13, BS14, BS15
};
#endif
typedef struct jtag_port_t {
uint8_t tms;
uint8_t tdi;
uint8_t tdo;
uint8_t tck;
uint8_t vref;
} jtag_port_t;
static void jtag_port_init(jtag_port_t* port) {
pinMode(port->tms, OUTPUT);
pinMode(port->tdi, OUTPUT);
pinMode(port->tck, OUTPUT);
pinMode(port->tdo, INPUT);
pinMode(port->vref, INPUT);
}
static void jtag_port_pulse_clock(jtag_port_t* port) {
digitalWrite(port->tck, 0);
delayMicroseconds(1);
digitalWrite(port->tck, 1);
}
static uint8_t jtag_port_pulse_clock_read_tdo(jtag_port_t* port) {
uint8_t val;
digitalWrite(port->tck, 0);
delayMicroseconds(1);
val = digitalRead(port->tdo);
digitalWrite(port->tck, 1);
return val;
}
static inline void jtag_port_set_tms(jtag_port_t* port, uint8_t val) {
digitalWrite(port->tms, val);
}
static inline void jtag_port_set_tdi(jtag_port_t* port, uint8_t val) {
digitalWrite(port->tdi, val);
}
static inline uint8_t jtag_port_get_veref(jtag_port_t* port) {
return digitalRead(port->vref);
}
static uint8_t xsvf_player_next_byte(void) {
uint8_t retry = 16;
uint8_t pos = xsvf->rdpos % XSVF_BUF_SIZE;
if (xsvf->wrpos == xsvf->rdpos) {
size_t r = 0;
while (r == 0) {
#if XSVF_DEBUG
Serial.println("D<<< req read"); // request to receive BUF size bytes
#endif
Serial.println(F("$062")); // request to receive BUF size bytes
r = Serial.readBytes(xsvf_buf + pos, XSVF_BUF_SIZE - pos);
#if XSVF_DEBUG
Serial.print("D<<< read "); // request to receive BUF size bytes
Serial.println(r, DEC); // request to receive BUF size bytes
#endif
if (r == 0) {
retry --;
if (retry == 0) {
xsvf->error = 1;
return 0;
}
delay(1);
} else {
xsvf->wrpos += r;
}
}
}
xsvf->rdpos++;
#if XSVF_DEBUG
Serial.print(F("D BYTE "));
Serial.print(xsvf_buf[pos], DEC);
Serial.print(F(" 0x"));
Serial.println(xsvf_buf[pos], HEX);
#endif
#if XSVF_CALC_CSUM
xsvf->csum += xsvf_buf[pos];
#endif
return xsvf_buf[pos];
}
static uint8_t xsvf_player_get_next_byte(void) {
return xsvf_player_next_byte();
}
/*
static uint16_t xsvf_player_get_next_word(void) {
uint16_t i = xsvf_player_next_byte();
i <<= 8;
i |= xsvf_player_next_byte();
return i;
}
*/
static uint32_t xsvf_player_get_next_long(void) {
uint32_t i = xsvf_player_next_byte();
i <<= 8;
i |= xsvf_player_next_byte();
i <<= 8;
i |= xsvf_player_next_byte();
i <<= 8;
i |= xsvf_player_next_byte();
return i;
}
static void xsvf_player_get_next_bytes(uint8_t* data, uint32_t count) {
while(count--) {
*data++ = xsvf_player_next_byte();
}
}
#ifdef XSVF_HEAP
static uint32_t xsvf_heap_pos(uint32_t* pos, uint16_t size) {
uint32_t heap_pos = *pos;
//allocate on 4 byte boundaries
heap_pos = (heap_pos + 3) & 0xFFFFFFFC;
*pos = heap_pos + size;
return heap_pos;
}
#endif
static void xsvf_clear() {
uint16_t i;
uint8_t* d = (uint8_t*) xsvf;
//clear the xsvf data in RAM
i = sizeof(xsvf_t);
while(i) {
i--;
d[i] = 0;
}
}
static void xsvf_player_init(jtag_port_t* port) {
jtag_port_init(port);
#ifdef XSVF_HEAP
{
// variables allocated on the heap
uint32_t heap_pos = (uint32_t) XSVF_HEAP;
xsvf = (xsvf_t*) xsvf_heap_pos(&heap_pos, sizeof(xsvf_t));
xsvf_buf = (uint8_t*) xsvf_heap_pos(&heap_pos, XSVF_BUF_SIZE);
xsvf_clear();
xsvf->xsvf_tdo_mask = (uint8_t*) xsvf_heap_pos(&heap_pos, S_MAX_CHAIN_SIZE_BYTES);
xsvf->xsvf_tdi = (uint8_t*) xsvf_heap_pos(&heap_pos, S_MAX_CHAIN_SIZE_BYTES);
xsvf->xsvf_tdo = (uint8_t*) xsvf_heap_pos(&heap_pos, S_MAX_CHAIN_SIZE_BYTES);
xsvf->xsvf_tdo_expected = (uint8_t*) xsvf_heap_pos(&heap_pos, S_MAX_CHAIN_SIZE_BYTES);
xsvf->xsvf_address_mask = (uint8_t*) xsvf_heap_pos(&heap_pos, S_MAX_CHAIN_SIZE_BYTES);
xsvf->xsvf_data_mask = (uint8_t*) xsvf_heap_pos(&heap_pos, S_MAX_CHAIN_SIZE_BYTES);
xsvf_tms_transitions = (uint8_t*) xsvf_heap_pos(&heap_pos, 16);
xsvf_tms_map = (uint16_t*) xsvf_heap_pos(&heap_pos, 32);
if (heap_pos - ((uint32_t)XSVF_HEAP) > sizeof(XSVF_HEAP)) {
Serial.print(F("Q-1,ERROR: Heap is small:"));
Serial.println(heap_pos - ((uint32_t)XSVF_HEAP), DEC);
return;
}
//set up TM transitions
xsvf_tms_transitions[0] = TMS_T00;
xsvf_tms_transitions[1] = TMS_T01;
xsvf_tms_transitions[2] = TMS_T02;
xsvf_tms_transitions[3] = TMS_T03;
xsvf_tms_transitions[4] = TMS_T04;
xsvf_tms_transitions[5] = TMS_T05;
xsvf_tms_transitions[6] = TMS_T06;
xsvf_tms_transitions[7] = TMS_T07;
xsvf_tms_transitions[8] = TMS_T08;
xsvf_tms_transitions[9] = TMS_T09;
xsvf_tms_transitions[10] = TMS_T10;
xsvf_tms_transitions[11] = TMS_T11;
xsvf_tms_transitions[12] = TMS_T12;
xsvf_tms_transitions[13] = TMS_T13;
xsvf_tms_transitions[14] = TMS_T14;
xsvf_tms_transitions[15] = TMS_T15;
//set up bitstream map
xsvf_tms_map[0] = BS00;
xsvf_tms_map[1] = BS01;
xsvf_tms_map[2] = BS02;
xsvf_tms_map[3] = BS03;
xsvf_tms_map[4] = BS04;
xsvf_tms_map[5] = BS05;
xsvf_tms_map[6] = BS06;
xsvf_tms_map[7] = BS07;
xsvf_tms_map[8] = BS08;
xsvf_tms_map[9] = BS09;
xsvf_tms_map[10] = BS10;
xsvf_tms_map[11] = BS11;
xsvf_tms_map[12] = BS12;
xsvf_tms_map[13] = BS13;
xsvf_tms_map[14] = BS14;
xsvf_tms_map[15] = BS15;
}
#else
{
xsvf_clear();
xsvf->xsvf_tdo_mask = xsvf_tdo_mask;
xsvf->xsvf_tdi = xsvf_tdi;
xsvf->xsvf_tdo = xsvf_tdo;
xsvf->xsvf_tdo_expected = xsvf_tdo_expected;
xsvf->xsvf_address_mask = xsvf_address_mask;
xsvf->xsvf_data_mask = xsvf_data_mask;
}
#endif
xsvf->repeat = 32;
xsvf->endir_state = XSTATE_RUN_TEST_IDLE;
xsvf->enddr_state = STATE_RUN_TEST_IDLE;
}
static void xsvf_jtagtap_state_ack(uint8_t tms) {
tms <<= 2; // either 0 or 4
xsvf->jtag_current_state = (xsvf_tms_transitions[xsvf->jtag_current_state] >> tms) & 0xf;
}
static void xsvf_jtagtap_shift_td(
jtag_port_t* port,
uint8_t *input_data,
uint8_t *output_data,
uint32_t data_bits,
uint8_t must_end)
{
uint32_t i, j;
uint32_t bit_count = data_bits;
uint32_t byte_count = (data_bits+ 7) >> 3;
for (i = 0; i < byte_count; ++i) {
uint8_t byte_out = input_data[byte_count - 1 - i];
uint8_t tdo_byte = 0;
for (j = 0; j < 8 && bit_count-- > 0; ++j) {
uint8_t tdo;
if (bit_count == 0 && must_end) {
jtag_port_set_tms(port, 1);
xsvf_jtagtap_state_ack(1);
}
jtag_port_set_tdi(port, byte_out & 1);
byte_out >>= 1;
tdo = jtag_port_pulse_clock_read_tdo(port);
tdo_byte |= tdo << j;
}
output_data[byte_count - 1 - i] = tdo_byte;
}
}
static void xsvf_jtagtap_state_step(jtag_port_t* port, uint8_t tms) {
jtag_port_set_tms(port, tms);
jtag_port_pulse_clock(port);
xsvf_jtagtap_state_ack(tms);
}
static void xsvf_jtagtap_state_goto(jtag_port_t* port, uint8_t state) {
if (xsvf->error) {
return;
}
if (state == XSTATE_TEST_LOGIC_RESET) {
uint8_t i;
for (i = 0; i < 5; ++i) {
xsvf_jtagtap_state_step(port, 1);
}
} else {
while (xsvf->jtag_current_state != state) {
xsvf_jtagtap_state_step(port, (xsvf_tms_map[xsvf->jtag_current_state] >> state) & 1);
}
}
}
static void xsvf_jtagtap_wait_time(jtag_port_t* port, uint32_t microseconds, uint8_t wait_clock) {
uint32_t until;
if (xsvf->error) {
return;
}
until = micros() + microseconds;
if (wait_clock) {
while (microseconds--) {
jtag_port_pulse_clock(port);
}
}
while (micros() < until) {
jtag_port_pulse_clock(port);
}
}
static void xsvf_jtag_sir(jtag_port_t* port) {
if (xsvf->error) {
return;
}
xsvf_jtagtap_state_goto(port, XSTATE_SHIFT_IR);
xsvf_jtagtap_shift_td(port, xsvf->xsvf_tdi, xsvf->xsvf_tdo, xsvf->sirsize_bits, 1);
if (xsvf->runtest) {
xsvf_jtagtap_state_goto(port, xsvf->endir_state);
} else {
xsvf_jtagtap_state_goto(port, XSTATE_RUN_TEST_IDLE);
xsvf_jtagtap_wait_time(port, xsvf->runtest, 1);
}
}
static uint8_t xsvf_jtag_is_tdo_as_expected(uint8_t use_mask)
{
uint32_t i;
for (i = 0; i < xsvf->sdrsize_bytes; ++i) {
uint8_t expected = xsvf->xsvf_tdo_expected[i];
uint8_t actual = xsvf->xsvf_tdo[i];
if (use_mask) {
uint8_t mask = xsvf->xsvf_tdo_mask[i];
expected &= mask;
actual &= mask;
}
#if XSVF_IGNORE_NOMATCH != 1
if (expected != actual) {
#if XSVF_DEBUG
Serial.println(F("D...NO MATCH!"));
#endif
return 0;
}
#endif
}
#if XSVF_DEBUG
Serial.println(F("D...match!"));
#endif
return 1;
}
#define SDR_MUST_BEGIN (flags & 0b1000)
#define SDR_MUST_CHECK (flags & 0b0100)
#define SDR_USE_MASK (flags & 0b0010)
#define SDR_MUST_END (flags & 0b0001)
static uint8_t xsvf_jtag_sdr(jtag_port_t* port, uint8_t flags)
{
int16_t attempts_left = xsvf->repeat;
uint8_t matched = 0;
uint8_t must_end = SDR_MUST_END;
uint8_t must_check = SDR_MUST_CHECK;
uint8_t use_mask = SDR_USE_MASK;
if (xsvf->error) {
return 0;
}
if (SDR_MUST_BEGIN) {
xsvf_jtagtap_state_goto(port, XSTATE_SHIFT_DR);
}
while (!matched && attempts_left-- >= 0) {
xsvf_jtagtap_shift_td(port, xsvf->xsvf_tdi, xsvf->xsvf_tdo, xsvf->sdrsize_bits, must_end);
if (!must_check) {
break;
}
matched = xsvf_jtag_is_tdo_as_expected(use_mask);
if (!matched) {
// XAP058, page 14
xsvf_jtagtap_state_goto(port, XSTATE_PAUSE_DR);
xsvf_jtagtap_state_goto(port, XSTATE_SHIFT_DR);
xsvf_jtagtap_state_goto(port, XSTATE_RUN_TEST_IDLE);
xsvf_jtagtap_wait_time(port, xsvf->runtest, 1);
//
xsvf_jtagtap_state_goto(port, XSTATE_SHIFT_DR);
#if XSVF_DEBUG
if (attempts_left >= 0) {
Serial.print(F("D...repeating: "));
Serial.println(xsvf->repeat - attempts_left, DEC);
}
#endif
}
}
if (must_check && !matched) {
xsvf->error = ERR_DR_CHECK_FAILED;
Serial.println(F("D!DR check failed!"));
}
if (must_end && matched) {
if (!xsvf->runtest) {
xsvf_jtagtap_state_goto(port, xsvf->enddr_state);
} else {
xsvf_jtagtap_state_goto(port, XSTATE_RUN_TEST_IDLE);
xsvf_jtagtap_wait_time(port, xsvf->runtest, 1);
}
}
return !must_check || (must_check && matched);
}
/*
* Reads the next instruction from the serial port. Also reads any
* remaining instruction parameters into the instruction buffer.
*/
static uint8_t xsvf_player_handle_next_instruction(jtag_port_t* port) {
uint8_t instruction = xsvf_player_next_byte();
if (xsvf->error) {
return ERR_IO; // failure
}
xsvf->instruction_counter++;
#if XSVF_DEBUG
Serial.print(F("D INSTR "));
Serial.print(xsvf->instruction_counter, DEC);
Serial.print(F(" (0x"));
Serial.print(instruction, HEX);
Serial.print(F("): "));
#endif
//do not use switch as it uses RAM
// ---[COMPLETE ] --------------------------------------------
if (instruction == XCOMPLETE) {
#if XSVF_DEBUG
Serial.println(F("XCOMPLETE"));
#endif
xsvf->xcomplete = 1;
} else
// ---[TDO MASK] --------------------------------------------
if (instruction == XTDOMASK) {
#if XSVF_DEBUG
Serial.println(F("XTDOMASK"));
#endif
xsvf_player_get_next_bytes(xsvf->xsvf_tdo_mask, xsvf->sdrsize_bytes);
} else
// ---[SIR SIR2] --------------------------------------------
if (instruction == XSIR || instruction == XSIR2) {
#if XSVF_DEBUG
Serial.println(instruction == XSIR ? F("XSIR") : F("XSIR2"));
#endif
xsvf->sirsize_bits = xsvf_player_get_next_byte();
if (instruction == XSIR2) {
xsvf->sirsize_bits <= 8;
xsvf->sirsize_bits |= xsvf_player_get_next_byte();
}
xsvf->sirsize_bytes = (xsvf->sirsize_bits + 7) >> 3;
if (xsvf->sirsize_bytes > S_MAX_CHAIN_SIZE_BYTES) {
return ERR_XSIR_SIZE;
}
xsvf_player_get_next_bytes(xsvf->xsvf_tdi, xsvf->sirsize_bytes);
xsvf_jtag_sir(port);
} else
// ---[SDR ] --------------------------------------------
if (instruction == XSDR || (instruction >= XSDRB && instruction <= XSDRE)) {
uint8_t flags = 0b1111;
#if XSVF_DEBUG
Serial.println(F("XSDRx"));
#endif
xsvf_player_get_next_bytes(xsvf->xsvf_tdi, xsvf->sdrsize_bytes);
if (instruction != XSDR) {
flags = (instruction == XSDRB) ? 0b1000 : (instruction == XSDRC) ? 0b0000 : 0b0001;
}
if (!xsvf_jtag_sdr(port, flags)) {
xsvf->error = ERR_XSDR;
}
} else
// ---[RUN TEST ] --------------------------------------------
if (instruction == XRUNTEST) {
#if XSVF_DEBUG
Serial.println(F("XRUNTEST"));
#endif
xsvf->runtest = xsvf_player_get_next_long();
} else
// ---[REPEAT ] --------------------------------------------
if (instruction == XREPEAT) {
#if XSVF_DEBUG
Serial.println(F("XREPEAT"));
#endif
xsvf->repeat = xsvf_player_get_next_byte();
} else
// ---[SDRSIZE ] --------------------------------------------
if (instruction == XSDRSIZE) {
#if XSVF_DEBUG
Serial.println(F("XSDRSIZE"));
#endif
xsvf->sdrsize_bits = xsvf_player_get_next_long();
xsvf->sdrsize_bytes = (xsvf->sdrsize_bits + 7) >> 3;
if (xsvf->sdrsize_bytes > S_MAX_CHAIN_SIZE_BYTES) {
return ERR_XSDRSIZE;
}
} else
// ---[SDRTDO ] --------------------------------------------
if (instruction == XSDRTDO || (instruction >= XSDRTDOB && instruction <= XSDRTDOE)) {
uint8_t flags = 0b1111;
#if XSVF_DEBUG
Serial.println(F("XSDRTDOx"));
#endif
xsvf_player_get_next_bytes(xsvf->xsvf_tdi, xsvf->sdrsize_bytes);
xsvf_player_get_next_bytes(xsvf->xsvf_tdo_expected, xsvf->sdrsize_bytes);
if (instruction != XSDRTDO) {
flags = (instruction == XSDRTDOB) ? 0b1100 : (instruction == XSDRTDOC) ? 0b0100 : 0b0101;
}
if (!xsvf_jtag_sdr(port, flags)) {
xsvf->error = ERR_XSDR;
}
} else
// ---[SET SDR MASKS ] --------------------------------------------
if (instruction == XSETSDRMASKS) {
#if XSVF_DEBUG
Serial.println(F("XSETSDRMASKS"));
#endif
xsvf_player_get_next_bytes(xsvf->xsvf_address_mask, xsvf->sdrsize_bytes);
xsvf_player_get_next_bytes(xsvf->xsvf_data_mask, xsvf->sdrsize_bytes);
} else
// ---[SDR INC ] --------------------------------------------
if (instruction == XSDRINC) {
#if XSVF_DEBUG
Serial.println(F("XSDRINC"));
#endif
xsvf_player_get_next_bytes(xsvf->xsvf_tdi, xsvf->sdrsize_bytes);
// TODO - check: return false?
} else
// ---[STATE ] --------------------------------------------
if (instruction == XSTATE) {
#if XSVF_DEBUG
Serial.println(F("XSTATE"));
#endif
xsvf->next_state = xsvf_player_get_next_byte();
xsvf_jtagtap_state_goto(port, xsvf->next_state);
} else
// ---[END IR ] --------------------------------------------
if (instruction == XENDIR) {
uint8_t s;
#if XSVF_DEBUG
Serial.println(F("XENDIR"));
#endif
s = xsvf_player_get_next_byte();
if (s == 0) {
xsvf->endir_state = STATE_RUN_TEST_IDLE;
} else
if (s == 1) {
xsvf->endir_state = STATE_PAUSE_IR;
} else {
return ERR_XENDIR;
}
} else
// ---[END DR ] --------------------------------------------
if (instruction == XENDDR) {
uint8_t s;
#if XSVF_DEBUG
Serial.println(F("XENDDR"));
#endif
s = xsvf_player_get_next_byte();
if (s == 0) {
xsvf->enddr_state = STATE_RUN_TEST_IDLE;
} else
if (s == 1) {
xsvf->enddr_state = STATE_PAUSE_DR;
} else {
return ERR_XENDDR;
}
} else
// ---[COMMENT ] --------------------------------------------
if (instruction == XCOMMENT) {
uint8_t c;
#if XSVF_DEBUG
Serial.println(F("XCOMMENT"));
#endif
Serial.print(F("D"));//debug message preamble
//read the comment bytes
do {
c = xsvf_player_get_next_byte();
// special feature: dump the TDO data
if (c == '#') {
uint8_t cnt = 0;
uint8_t size = xsvf_player_get_next_byte() - '0';
//dump the tdo buffer bytes
while(cnt < size) {
char t[4];
uint8_t v = xsvf->xsvf_tdo[cnt];
uint8_t x1 = v >> 4;
v &= 0xF;
// DEC to HEX conversion with leading zero
t[0] = (char) (x1 < 10 ? '0' + x1 : 55 + x1 );
t[1] = (char) (v < 10 ? '0' + v : 55 + v );
t[2] = 0;
Serial.print(t);
cnt++;
}
} else if (c) {
Serial.print((char)c);
}
} while(c);
Serial.println();
} else
// ---[WAIT ] --------------------------------------------
if (instruction == XWAIT || instruction == XWAITSTATE) {
uint32_t clock_cnt = 0;
uint8_t wait_clock = 1;
#if XSVF_DEBUG
Serial.println(instruction == XWAIT ? F("XWAIT") : F("XWAITSTATE"));
#endif
//TOOD - do we need these states to be global?
xsvf->wait_start_state = xsvf_player_get_next_byte();
xsvf->wait_end_state = xsvf_player_get_next_byte();
if (instruction == XWAITSTATE) {
clock_cnt = xsvf_player_get_next_long();
wait_clock = clock_cnt > 0 ? 1 : 0;
}
#if XSVF_DEBUG
Serial.print(F("Dclock:"));
Serial.println(clock_cnt, DEC);
#endif
xsvf->wait_time_usecs = xsvf_player_get_next_long();
#if XSVF_DEBUG
Serial.print(F("Dmicros:"));
Serial.println( xsvf->wait_time_usecs, DEC);
#endif
xsvf_jtagtap_state_goto(port, xsvf->wait_start_state);
// happens only during XWAITSTATE
while (clock_cnt) {
jtag_port_pulse_clock(port);
clock_cnt--;
}
xsvf_jtagtap_wait_time(port, xsvf->wait_time_usecs, wait_clock);
xsvf_jtagtap_state_goto(port, xsvf->wait_end_state);
} else
// ---[TRST - test line reset] --------------------------------------------
if (instruction == XTRST) {
#if XSVF_DEBUG
Serial.println(F("XTRST"));
#endif
//read test reset mode (0-on, 1-off, 2-Z, 3-Absent)
xsvf_player_get_next_byte();
} else
// ---[UNKNOWN ] --------------------------------------------
{
#if XSVF_DEBUG
Serial.print(F("XUNKNOWN:"));
Serial.println(instruction, DEC);
#endif
//unimplemented instruction
return ERR_INSTR_NOT_IMPLEMENTED;
}
if (xsvf->error) {
return xsvf->error; // failure
}
return 0;
}
static void jtag_play_xsvf(jtag_port_t* port)
{
uint32_t n = 0;
uint8_t ret;
xsvf_player_init(port);
//check xref is high
if (!jtag_port_get_veref(port)) {
Serial.println(F("Q-255,JTAG not connected"));
return;
}
Serial.println(F("RXSVF")); //announce ready to receive XSVF stream
while(1) {
n++;
ret = xsvf_player_handle_next_instruction(port);
if (ret) {
Serial.print(F("Q-"));
Serial.print(ret, DEC );
Serial.println(F(",Fail"));
break;
} else {
if (xsvf->xcomplete) {
Serial.println(F("!Success"));
break;
}
}
}
Serial.print(F("!Processed instr:"));
Serial.println(xsvf->instruction_counter, DEC);
#if XSVF_CALC_CSUM
Serial.print(F("!sum: 0x"));
// print leading zeros in the check sum hex value
{
uint32_t i = 0xF0000000;
while((!(xsvf->csum & i)) && i) {
Serial.print(F("0"));
i >>= 4;
}
}
Serial.print(xsvf->csum, HEX);
Serial.print(F("/"));
Serial.println(xsvf->rdpos, DEC);
#endif /* XSVF_CALC_CSUM */
if (xsvf->xcomplete) {
Serial.println(F("Q-0,OK"));
}
//the 3 pins must be low or else the vref might be triggered next time
digitalWrite(port->tms, 0);
digitalWrite(port->tdi, 0);
digitalWrite(port->tck, 0);
delay(100);
// put the jtag port pins into High-Z (vref already is input)
pinMode(port->tms, INPUT);
pinMode(port->tdi, INPUT);
pinMode(port->tck, INPUT);
pinMode(port->tdo, INPUT);
}
#endif /*_JTAG_XSVF_PLAYER_H_*/
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