| Line 299... |
Line 299... |
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/*----------------------------------------------------------------------------*/
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/*----------------------------------------------------------------------------*/
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/*!Resets the local JTAG via JP1
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/*!Resets the local JTAG via JP1
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Only works if this is a local connection
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Only works if this is a local connection. The old code used to ignore the
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write function results, but that upsets some particularly picky Ubuntu GCC
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compilers, so we get the result and do nothing with it.
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Writes:
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Writes:
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@verbatim
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@verbatim
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TCK=0 TRST=0 TMS=0 TDI=0
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TCK=0 TRST=0 TMS=0 TDI=0
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TCK=0 TRST=1 TMS=0 TDI=0
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TCK=0 TRST=1 TMS=0 TDI=0
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| Line 315... |
Line 317... |
static void
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static void
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jp1_ll_reset_jp1()
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jp1_ll_reset_jp1()
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{
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{
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unsigned char data;
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unsigned char data;
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int lp = or1k_jtag_connection.device.lp; /* CZ */
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int lp = or1k_jtag_connection.device.lp; /* CZ */
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ssize_t res; /* So don't ignore results */
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if (OR1K_JTAG_LOCAL != or1k_jtag_connection.location)
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if (OR1K_JTAG_LOCAL != or1k_jtag_connection.location)
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{
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{
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error ("jp1_ll_reset_jp1 called without a local connection!");
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error ("jp1_ll_reset_jp1 called without a local connection!");
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}
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}
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data = 0;
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data = 0;
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write (lp, &data, sizeof (data));
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res = write (lp, &data, sizeof (data));
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JP1_WAIT ();
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JP1_WAIT ();
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data = JP1_TRST;
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data = JP1_TRST;
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write (lp, &data, sizeof (data) );
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res = write (lp, &data, sizeof (data) );
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JP1_WAIT ();
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JP1_WAIT ();
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} /* jp1_ll_reset_jp1() */
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} /* jp1_ll_reset_jp1() */
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| Line 357... |
Line 360... |
/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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static unsigned char
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static unsigned char
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jp1_ll_read_jp1()
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jp1_ll_read_jp1()
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{
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{
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int data = 0; /* Initialize to keep GCC 4.4.1 OK */
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int data;
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if (OR1K_JTAG_LOCAL != or1k_jtag_connection.location)
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if (OR1K_JTAG_LOCAL != or1k_jtag_connection.location)
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{ /* CZ */
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{ /* CZ */
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error ("jp1_ll_read_jp1 called without a local connection!");
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error ("jp1_ll_read_jp1 called without a local connection!");
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}
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}
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| Line 382... |
Line 385... |
Takes TMS and TDI values from the bottom two bits of the argument
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Takes TMS and TDI values from the bottom two bits of the argument
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Rewritten by Jeremy Bennett to work whatever the TMS and TDI bit positions
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Rewritten by Jeremy Bennett to work whatever the TMS and TDI bit positions
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in JP1.
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in JP1.
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The old code used to ignore the write function results, but that upsets
|
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some particularly picky Ubuntu GCC compilers, so we get the result and do
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nothing with it.
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Writes:
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Writes:
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@verbatim
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@verbatim
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TCK=0 TRST=1 TMS=tms TDI=tdi
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TCK=0 TRST=1 TMS=tms TDI=tdi
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TCK=1 TRST=1 TMS=tms TDI=tdi
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TCK=1 TRST=1 TMS=tms TDI=tdi
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@endverbatim
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@endverbatim
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| Line 398... |
Line 405... |
jp1_ll_write_jp1 (unsigned char tms,
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jp1_ll_write_jp1 (unsigned char tms,
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unsigned char tdi)
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unsigned char tdi)
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{
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{
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unsigned char data;
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unsigned char data;
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int lp = or1k_jtag_connection.device.lp; /* CZ */
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int lp = or1k_jtag_connection.device.lp; /* CZ */
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ssize_t res; /* So don't ignore results */
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if (OR1K_JTAG_LOCAL != or1k_jtag_connection.location)
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if (OR1K_JTAG_LOCAL != or1k_jtag_connection.location)
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{
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{
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error ("jp1_ll_write_jp1 called without a local connection!");
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error ("jp1_ll_write_jp1 called without a local connection!");
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}
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}
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data = (tms ? JP1_TDI : 0) |
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data = (tms ? JP1_TDI : 0) |
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(tdi ? JP1_TMS : 0) |
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(tdi ? JP1_TMS : 0) |
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JP1_TRST;
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JP1_TRST;
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write (lp, &data, sizeof (data) );
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res = write (lp, &data, sizeof (data) );
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JP1_WAIT ();
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JP1_WAIT ();
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/* rise clock */
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/* rise clock */
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data |= JP1_TCK;
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data |= JP1_TCK;
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write (lp, &data, sizeof (data) );
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res = write (lp, &data, sizeof (data) );
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JP1_WAIT ();
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JP1_WAIT ();
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/* Update the CRC for this TDI bit */
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/* Update the CRC for this TDI bit */
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jp1_crc_w = jp1_ll_crc_calc (jp1_crc_w, tdi ? 1 : 0);
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jp1_crc_w = jp1_ll_crc_calc (jp1_crc_w, tdi ? 1 : 0);
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