flash/jtagspi: sending command and setting parameters without probing.

[openocd.git] / tcl / cpld / jtagspi.cfg

diff --git a/tcl/cpld/jtagspi.cfg b/tcl/cpld/jtagspi.cfg
index 60c3cb109469eaf365ec1e56c1a5a99c7bc5730d..4c84792fe11bdd68cedb2ac54ffc0840b37845e1 100644 (file)
--- a/tcl/cpld/jtagspi.cfg
+++ b/tcl/cpld/jtagspi.cfg
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 set _USER1 0x02
 
 if { [info exists JTAGSPI_IR] } {
@@ -6,12 +8,6 @@ if { [info exists JTAGSPI_IR] } {
        set _JTAGSPI_IR $_USER1
 }
 
-if { [info exists DR_LENGTH] } {
-       set _DR_LENGTH $DR_LENGTH
-} else {
-       set _DR_LENGTH 1
-}
-
 if { [info exists TARGETNAME] } {
        set _TARGETNAME $TARGETNAME
 } else {
@@ -25,13 +21,23 @@ if { [info exists FLASHNAME] } {
 }
 
 target create $_TARGETNAME testee -chain-position $_CHIPNAME.tap
-flash bank $_FLASHNAME jtagspi 0 0 0 0 $_TARGETNAME $_JTAGSPI_IR $_DR_LENGTH
+flash bank $_FLASHNAME jtagspi 0 0 0 0 $_TARGETNAME $_JTAGSPI_IR
+
+# initialize jtagspi flash
+# chain_id: identifier of pld (you can get a list with 'pld devices')
+# proxy_bit: file with bitstream connecting JTAG and SPI interface in the PLD.
+# release_from_pwr_down_cmd: optional, command sent to spi flash before probing.
+#                            ex: 0xAB to release from power-dowm.
+#                            Just omit it to not send a command.
 
-proc jtagspi_init {chain_id proxy_bit} {
+proc jtagspi_init {chain_id proxy_bit {release_from_pwr_down_cmd -1}} {
        # load proxy bitstream $proxy_bit and probe spi flash
        global _FLASHNAME
        pld load $chain_id $proxy_bit
        reset halt
+       if {$release_from_pwr_down_cmd != -1} {
+               jtagspi cmd $_FLASHNAME 0 $release_from_pwr_down_cmd
+       }
        flash probe $_FLASHNAME
 }