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- # Defines basic Tcl procs for OpenOCD JTAG module
-
- # Executed during "init". Can be overridden
- # by board/target/... scripts
- proc jtag_init {} {
- if {[catch {jtag arp_init} err]!=0} {
- # try resetting additionally
- init_reset startup
- }
- }
-
- # This reset logic may be overridden by board/target/... scripts as needed
- # to provide a reset that, if possible, is close to a power-up reset.
- #
- # Exit requirements include: (a) JTAG must be working, (b) the scan
- # chain was validated with "jtag arp_init" (or equivalent), (c) nothing
- # stays in reset. No TAP-specific scans were performed. It's OK if
- # some targets haven't been reset yet; they may need TAP-specific scans.
- #
- # The "mode" values include: halt, init, run (from "reset" command);
- # startup (at OpenOCD server startup, when JTAG may not yet work); and
- # potentially more (for reset types like cold, warm, etc)
- proc init_reset { mode } {
- jtag arp_init-reset
- }
-
- #########
-
- # TODO: power_restore and power_dropout are currently neither
- # documented nor supported except on ZY1000.
-
- proc power_restore {} {
- puts "Sensed power restore, running reset init and halting GDB."
- reset init
-
- # Halt GDB so user can deal with a detected power restore.
- #
- # After GDB is halted, then output is no longer forwarded
- # to the GDB console.
- set targets [target names]
- foreach t $targets {
- # New event script.
- $t invoke-event arp_halt_gdb
- }
- }
-
- add_help_text power_restore "Overridable procedure run when power restore is detected. Runs 'reset init' by default."
-
- proc power_dropout {} {
- puts "Sensed power dropout."
- }
-
- #########
-
- # TODO: srst_deasserted and srst_asserted are currently neither
- # documented nor supported except on ZY1000.
-
- proc srst_deasserted {} {
- puts "Sensed nSRST deasserted, running reset init and halting GDB."
- reset init
-
- # Halt GDB so user can deal with a detected reset.
- #
- # After GDB is halted, then output is no longer forwarded
- # to the GDB console.
- set targets [target names]
- foreach t $targets {
- # New event script.
- $t invoke-event arp_halt_gdb
- }
- }
-
- add_help_text srst_deasserted "Overridable procedure run when srst deassert is detected. Runs 'reset init' by default."
-
- proc srst_asserted {} {
- puts "Sensed nSRST asserted."
- }
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