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Dick Hollenbeck <dick@softplc.com> comments & 7 clock TMS reset for good measure 

git-svn-id: svn://svn.berlios.de/openocd/trunk@1618 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe 2009-05-06 18:24:24 +00:00
parent cd0512befd
commit c8e52f9e15
1 changed files with 30 additions and 20 deletions
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30
src/jtag/jtag.c
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@ -956,6 +956,7 @@ void jtag_add_pathmove(int num_states, tap_state_t *path)
LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
exit(-1);
}
if ( tap_state_transition(cur_state, true) != path[i]
&& tap_state_transition(cur_state, false) != path[i])
{
@ -1490,7 +1491,6 @@ int jtag_examine_chain(void)
field.in_handler = NULL;
for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
{
buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
@ -1668,7 +1668,6 @@ int jtag_validate_chain(void)
field.in_handler = NULL;
jtag_add_plain_ir_scan(1, &field, TAP_RESET);
jtag_execute_queue();
@ -3127,18 +3126,29 @@ static struct
some long-standing problems.
Jeff
I added the bit count into the table
I added the bit count into the table, reduced RESET column to 7 bits from 8.
Dick
state specific comments:
------------------------
*->RESET tried the 5 bit reset and it gave me problems, 7 bits seems to
work better on ARM9 with ft2232 driver. (Dick)
RESET->DRSHIFT add 1 extra clock cycles in the RESET state before advancing.
needed on ARM9 with ft2232 driver. (Dick)
RESET->IRSHIFT add 1 extra clock cycles in the RESET state before advancing.
needed on ARM9 with ft2232 driver. (Dick)
*/
/* to state: */
/* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
{ B8(11111,5), B8(0,1), B8(0010,4), B8(01010,5), B8(00110,5), B8(010110,6) }, /* RESET */
{ B8(11111,5), B8(0,1), B8(001,3), B8(0101,4), B8(0011,4), B8(01011,5) }, /* IDLE */
{ B8(11111,5), B8(011,3), B8(00111,5), B8(01,2), B8(001111,6), B8(0101111,7) }, /* DRSHIFT */
{ B8(11111,5), B8(011,3), B8(01,2), B8(0,1), B8(001111,6), B8(0101111,7) }, /* DRPAUSE */
{ B8(11111,5), B8(011,3), B8(00111,5), B8(010111,6), B8(001111,6), B8(01,2) }, /* IRSHIFT */
{ B8(11111,5), B8(011,3), B8(00111,5), B8(010111,6), B8(01,2), B8(0,1) } /* IRPAUSE */
{ B8(1111111,7), B8(0,1), B8(00101,5), B8(01010,5), B8(001101,6), B8(010110,6) }, /* RESET */
{ B8(1111111,7), B8(0,1), B8(001,3), B8(0101,4), B8(0011,4), B8(01011,5) }, /* IDLE */
{ B8(1111111,7), B8(011,3), B8(00111,5), B8(01,2), B8(001111,6), B8(0101111,7) }, /* DRSHIFT */
{ B8(1111111,7), B8(011,3), B8(01,2), B8(0,1), B8(001111,6), B8(0101111,7) }, /* DRPAUSE */
{ B8(1111111,7), B8(011,3), B8(00111,5), B8(010111,6), B8(001111,6), B8(01,2) }, /* IRSHIFT */
{ B8(1111111,7), B8(011,3), B8(00111,5), B8(010111,6), B8(01,2), B8(0,1) } /* IRPAUSE */
#else /* this is the old table, converted from hex and with the bit_count set to 7 for each combo, like before */
@ -3149,7 +3159,7 @@ static struct
{ B8(1111111,7), B8(0110001,7), B8(0000000,7), B8(0000001,7), B8(0001111,7), B8(0101111,7) }, /* DRSHIFT */
{ B8(1111111,7), B8(0110000,7), B8(0100000,7), B8(0010111,7), B8(0011110,7), B8(0101111,7) }, /* DRPAUSE */
{ B8(1111111,7), B8(0110001,7), B8(0000111,7), B8(0010111,7), B8(0000000,7), B8(0000001,7) }, /* IRSHIFT */
{ B8(1111111,7), B8(0110000,7), B8(0011100,7), B8(0010111,7), B8(0100000,7), B8(0101111,7) }, /* IRPAUSE */
{ B8(1111111,7), B8(0110000,7), B8(0011100,7), B8(0010111,7), B8(0100000,7), B8(0101111,7) } /* IRPAUSE */
#endif