238 lines
7.2 KiB
C
238 lines
7.2 KiB
C
/***************************************************************************
|
|
* Copyright (C) 2007-2010 by Øyvind Harboe *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the *
|
|
* Free Software Foundation, Inc., *
|
|
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
|
|
***************************************************************************/
|
|
|
|
/* used to test manual mode */
|
|
#define TEST_MANUAL() 0
|
|
#define VERBOSE(a)
|
|
|
|
#if BUILD_ECOSBOARD
|
|
|
|
#include <cyg/hal/hal_io.h> // low level i/o
|
|
#include <cyg/hal/hal_intr.h> // low level i/o
|
|
#define ZY1000_PEEK(a, b) HAL_READ_UINT32(a, b)
|
|
#define ZY1000_POKE(a, b) HAL_WRITE_UINT32(a, b)
|
|
|
|
#else
|
|
|
|
/* redirect this to TCP/IP */
|
|
#define ZY1000_JTAG_BASE 0
|
|
extern void zy1000_tcpout(uint32_t address, uint32_t data);
|
|
extern uint32_t zy1000_tcpin(uint32_t address);
|
|
#define ZY1000_PEEK(a, b) b=zy1000_tcpin(a)
|
|
#define ZY1000_POKE(a, b) zy1000_tcpout(a, b)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#if BUILD_ECOSBOARD
|
|
// FIFO empty?
|
|
static __inline__ void waitIdle(void)
|
|
{
|
|
uint32_t empty;
|
|
do
|
|
{
|
|
ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
|
|
} while ((empty & 0x100) == 0);
|
|
}
|
|
|
|
static __inline__ void zy1000_flush_readqueue(void)
|
|
{
|
|
/* Not used w/hardware fifo */
|
|
}
|
|
static __inline__ void zy1000_flush_callbackqueue(void)
|
|
{
|
|
/* Not used w/hardware fifo */
|
|
}
|
|
#else
|
|
extern void waitIdle(void);
|
|
void zy1000_flush_readqueue(void);
|
|
void zy1000_flush_callbackqueue(void);
|
|
void zy1000_jtag_add_callback4(jtag_callback_t callback, jtag_callback_data_t data0, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3);
|
|
void zy1000_jtag_add_callback(jtag_callback1_t callback, jtag_callback_data_t data0);
|
|
#endif
|
|
|
|
static __inline__ void waitQueue(void)
|
|
{
|
|
// waitIdle();
|
|
}
|
|
|
|
static __inline__ void sampleShiftRegister(void)
|
|
{
|
|
#if 0
|
|
uint32_t dummy;
|
|
waitIdle();
|
|
ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, dummy);
|
|
#endif
|
|
}
|
|
|
|
static __inline__ void setCurrentState(enum tap_state state)
|
|
{
|
|
uint32_t a;
|
|
a = state;
|
|
int repeat = 0;
|
|
if (state == TAP_RESET)
|
|
{
|
|
// The FPGA nor we know the current state of the CPU TAP
|
|
// controller. This will move it to TAP for sure.
|
|
//
|
|
// 5 should be enough here, 7 is what OpenOCD uses
|
|
repeat = 7;
|
|
}
|
|
waitQueue();
|
|
sampleShiftRegister();
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | a);
|
|
|
|
}
|
|
|
|
/*
|
|
* Enter state and cause repeat transitions *out* of that state. So if the endState != state, then
|
|
* the transition from state to endState counts as a transition out of state.
|
|
*/
|
|
static __inline__ void shiftValueInner(const enum tap_state state, const enum tap_state endState, int repeat, uint32_t value)
|
|
{
|
|
uint32_t a,b;
|
|
a = state;
|
|
b = endState;
|
|
waitQueue();
|
|
sampleShiftRegister();
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value);
|
|
#if 1
|
|
#if TEST_MANUAL()
|
|
if ((state == TAP_DRSHIFT) && (endState != TAP_DRSHIFT))
|
|
{
|
|
int i;
|
|
setCurrentState(state);
|
|
for (i = 0; i < repeat; i++)
|
|
{
|
|
int tms;
|
|
tms = 0;
|
|
if ((i == repeat-1) && (state != endState))
|
|
{
|
|
tms = 1;
|
|
}
|
|
/* shift out value */
|
|
waitIdle();
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, (((value >> i)&1) << 1) | tms);
|
|
}
|
|
waitIdle();
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
|
|
waitIdle();
|
|
//ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_DRSHIFT); // set this state and things break => expected
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_DRPAUSE); // set this and things will work => expected. Not setting this is not sufficient to make things break.
|
|
setCurrentState(endState);
|
|
} else
|
|
{
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | b);
|
|
}
|
|
#else
|
|
/* fast version */
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | b);
|
|
#endif
|
|
#else
|
|
/* maximum debug version */
|
|
if ((repeat > 0) && ((state == TAP_DRSHIFT)||(state == TAP_SI)))
|
|
{
|
|
int i;
|
|
/* sample shift register for every bit. */
|
|
for (i = 0; i < repeat-1; i++)
|
|
{
|
|
sampleShiftRegister();
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value >> i);
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 8) | (a << 4) | a);
|
|
}
|
|
sampleShiftRegister();
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value >> (repeat-1));
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 8) | (a << 4) | b);
|
|
} else
|
|
{
|
|
sampleShiftRegister();
|
|
ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | b);
|
|
}
|
|
sampleShiftRegister();
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
static __inline__ void interface_jtag_add_dr_out_core(struct jtag_tap *target_tap,
|
|
int num_fields,
|
|
const int *num_bits,
|
|
const uint32_t *value,
|
|
enum tap_state end_state)
|
|
{
|
|
enum tap_state pause_state = TAP_DRSHIFT;
|
|
|
|
struct jtag_tap *tap, *nextTap;
|
|
for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
|
|
{
|
|
nextTap = jtag_tap_next_enabled(tap);
|
|
if (nextTap == NULL)
|
|
{
|
|
pause_state = end_state;
|
|
}
|
|
if (tap == target_tap)
|
|
{
|
|
int j;
|
|
for (j = 0; j < (num_fields-1); j++)
|
|
{
|
|
shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[j], value[j]);
|
|
}
|
|
shiftValueInner(TAP_DRSHIFT, pause_state, num_bits[j], value[j]);
|
|
} else
|
|
{
|
|
/* program the scan field to 1 bit length, and ignore it's value */
|
|
shiftValueInner(TAP_DRSHIFT, pause_state, 1, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static __inline__ void interface_jtag_add_dr_out(struct jtag_tap *target_tap,
|
|
int num_fields,
|
|
const int *num_bits,
|
|
const uint32_t *value,
|
|
enum tap_state end_state)
|
|
{
|
|
|
|
int singletap = (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL)) == NULL);
|
|
if ((singletap) && (num_fields == 3))
|
|
{
|
|
/* used by embeddedice_write_reg_inner() */
|
|
shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[0], value[0]);
|
|
shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[1], value[1]);
|
|
shiftValueInner(TAP_DRSHIFT, end_state, num_bits[2], value[2]);
|
|
} else if ((singletap) && (num_fields == 2))
|
|
{
|
|
/* used by arm7 code */
|
|
shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[0], value[0]);
|
|
shiftValueInner(TAP_DRSHIFT, end_state, num_bits[1], value[1]);
|
|
} else
|
|
{
|
|
interface_jtag_add_dr_out_core(target_tap, num_fields, num_bits, value, end_state);
|
|
}
|
|
}
|
|
|
|
#if BUILD_ECOSBOARD
|
|
#define interface_jtag_add_callback(callback, in) callback(in)
|
|
#define interface_jtag_add_callback4(callback, in, data1, data2, data3) jtag_set_error(callback(in, data1, data2, data3))
|
|
#else
|
|
#define interface_jtag_add_callback(callback, in) zy1000_jtag_add_callback(callback, in)
|
|
#define interface_jtag_add_callback4(callback, in, data1, data2, data3) zy1000_jtag_add_callback4(callback, in, data1, data2, data3)
|
|
#endif
|