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cosmetic cleanup in TMS tables 

Cleanup comments and layout/whitespace in the TMS tables.
Table contents stayed the same (ignoring whitespace).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
This commit is contained in:
David Brownell 2009-10-13 10:55:24 -07:00
parent 6a2fd7cad5
commit 5535399a46
1 changed files with 17 additions and 11 deletions
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14
src/jtag/interface.c
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@ -133,13 +133,10 @@ static const struct tms_sequences old_tms_seqs[6][6] = /* [from_state_ndx][to_
{ {
/* value clocked to TMS to move from one of six stable states to another. /* value clocked to TMS to move from one of six stable states to another.
* N.B. OOCD clocks TMS from LSB first, so read these right-to-left. * N.B. OOCD clocks TMS from LSB first, so read these right-to-left.
* N.B. These values are tightly bound to the table in tap_get_tms_path_len().
* N.B. Reset only needs to be 0b11111, but in JLink an even byte of 1's is more stable. * N.B. Reset only needs to be 0b11111, but in JLink an even byte of 1's is more stable.
* These extra ones cause no TAP state problem, because we go into reset and stay in reset. * These extra ones cause no TAP state problem, because we go into reset and stay in reset.
*/ */
/* to state: */ /* to state: */
/* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */ /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
{ B8(1111111,7), B8(0000000,7), B8(0010111,7), B8(0001010,7), B8(0011011,7), B8(0010110,7) }, /* RESET */ { B8(1111111,7), B8(0000000,7), B8(0010111,7), B8(0001010,7), B8(0011011,7), B8(0010110,7) }, /* RESET */
@ -173,9 +170,18 @@ static const struct tms_sequences short_tms_seqs[6][6] = /* [from_state_ndx][t
RESET->DRSHIFT add 1 extra clock cycles in the RESET state before advancing. RESET->DRSHIFT add 1 extra clock cycles in the RESET state before advancing.
needed on ARM9 with ft2232 driver. (Dick) needed on ARM9 with ft2232 driver. (Dick)
(For a total of *THREE* extra clocks in RESET; NOP.)
RESET->IRSHIFT add 1 extra clock cycles in the RESET state before advancing. RESET->IRSHIFT add 1 extra clock cycles in the RESET state before advancing.
needed on ARM9 with ft2232 driver. (Dick) needed on ARM9 with ft2232 driver. (Dick)
(For a total of *TWO* extra clocks in RESET; NOP.)
RESET->* always adds one or more clocks in the target state,
which should be NOPS; except shift states which (as
noted above) add those clocks in RESET.
The X-to-X transitions always add clocks; from *SHIFT, they go
via IDLE and thus *DO HAVE SIDE EFFECTS* (capture and update).
*/ */
/* to state: */ /* to state: */
@ -185,7 +191,7 @@ static const struct tms_sequences short_tms_seqs[6][6] = /* [from_state_ndx][t
{ 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(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(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(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 */ { B8(1111111,7), B8(011,3), B8(00111,5), B8(010111,6), B8(01,2), B8(0,1)} /* IRPAUSE */
}; };