1 # Defines basic Tcl procs for OpenOCD target module
3 proc new_target_name { } {
4 return [target number [expr [target count] - 1 ]]
7 global in_process_reset
10 # Catch reset recursion
11 proc ocd_process_reset { MODE } {
12 global in_process_reset
13 if {$in_process_reset} {
14 set in_process_reset 0
15 return -code error "'reset' can not be invoked recursively"
18 set in_process_reset 1
19 set success [expr [catch {ocd_process_reset_inner $MODE} result]==0]
20 set in_process_reset 0
25 return -code error $result
29 proc ocd_process_reset_inner { MODE } {
30 set targets [target names]
32 # If this target must be halted...
34 if { 0 == [string compare $MODE halt] } {
37 if { 0 == [string compare $MODE init] } {
40 if { 0 == [string compare $MODE run ] } {
44 return -code error "Invalid mode: $MODE, must be one of: halt, init, or run";
47 # Target event handlers *might* change which TAPs are enabled
48 # or disabled, so we fire all of them. But don't issue any
49 # target "arp_*" commands, which may issue JTAG transactions,
50 # unless we know the underlying TAP is active.
52 # NOTE: ARP == "Advanced Reset Process" ... "advanced" is
53 # relative to a previous restrictive scheme
57 $t invoke-event reset-start
60 # Use TRST or TMS/TCK operations to reset all the tap controllers.
61 # TAP reset events get reported; they might enable some taps.
64 # Examine all targets on enabled taps.
66 if {![using_jtag] || [jtag tapisenabled [$t cget -chain-position]]} {
67 $t invoke-event examine-start
68 set err [catch "$t arp_examine allow-defer"]
70 $t invoke-event examine-fail
72 $t invoke-event examine-end
77 # Assert SRST, and report the pre/post events.
78 # Note: no target sees SRST before "pre" or after "post".
80 $t invoke-event reset-assert-pre
83 # C code needs to know if we expect to 'halt'
84 if {![using_jtag] || [jtag tapisenabled [$t cget -chain-position]]} {
85 $t arp_reset assert $halt
89 $t invoke-event reset-assert-post
92 # Now de-assert SRST, and report the pre/post events.
93 # Note: no target sees !SRST before "pre" or after "post".
95 $t invoke-event reset-deassert-pre
98 # Again, de-assert code needs to know if we 'halt'
99 if {![using_jtag] || [jtag tapisenabled [$t cget -chain-position]]} {
100 $t arp_reset deassert $halt
104 $t invoke-event reset-deassert-post
107 # Pass 1 - Now wait for any halt (requested as part of reset
108 # assert/deassert) to happen. Ideally it takes effect without
109 # first executing any instructions.
112 if {[using_jtag] && ![jtag tapisenabled [$t cget -chain-position]]} {
116 # don't wait for targets where examination is deferred
117 # they can not be halted anyway at this point
118 if { ![$t was_examined] && [$t examine_deferred] } {
122 # Wait up to 1 second for target to halt. Why 1sec? Cause
123 # the JTAG tap reset signal might be hooked to a slow
124 # resistor/capacitor circuit - and it might take a while
127 # Catch, but ignore any errors.
128 catch { $t arp_waitstate halted 1000 }
133 if { 0 != [string compare $s "halted" ] } {
134 return -code error [format "TARGET: %s - Not halted" $t]
139 #Pass 2 - if needed "init"
140 if { 0 == [string compare init $MODE] } {
142 if {[using_jtag] && ![jtag tapisenabled [$t cget -chain-position]]} {
146 # don't wait for targets where examination is deferred
147 # they can not be halted anyway at this point
148 if { ![$t was_examined] && [$t examine_deferred] } {
152 set err [catch "$t arp_waitstate halted 5000"]
155 $t invoke-event reset-init
161 $t invoke-event reset-end
166 set _TRANSPORT [ transport select ]
167 expr { [ string first "jtag" $_TRANSPORT ] != -1 }
171 set _TRANSPORT [ transport select ]
172 expr { [ string first "swd" $_TRANSPORT ] != -1 }
176 set _TRANSPORT [ transport select ]
177 expr { [ string first "hla" $_TRANSPORT ] != -1 }
182 # Temporary migration aid. May be removed starting in January 2011.
183 proc armv4_5 params {
184 echo "DEPRECATED! use 'arm $params' not 'armv4_5 $params'"
188 # Target/chain configuration scripts can either execute commands directly
189 # or define a procedure which is executed once all configuration
190 # scripts have completed.
192 # By default(classic) the config scripts will set up the target configuration
193 proc init_targets {} {
196 proc set_default_target_event {t e s} {
197 if {[$t cget -event $e] == ""} {
198 $t configure -event $e $s
202 proc init_target_events {} {
203 set targets [target names]
206 set_default_target_event $t gdb-flash-erase-start "reset init"
207 set_default_target_event $t gdb-flash-write-end "reset halt"
208 set_default_target_event $t gdb-attach "halt 1000"
212 # Additionally board config scripts can define a procedure init_board that will be executed after init and init_targets
216 # deprecated target name cmds
217 proc cortex_m3 args {
218 echo "DEPRECATED! use 'cortex_m' not 'cortex_m3'"
222 proc cortex_a8 args {
223 echo "DEPRECATED! use 'cortex_a' not 'cortex_a8'"