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 $t invoke-event reset-start
60 # Use TRST or TMS/TCK operations to reset all the tap controllers.
61 # TAP reset events get reported; they might enable some taps.
64 # Examine all targets on enabled taps.
66 if {[jtag tapisenabled
[$t cget
-chain-position
]]} {
71 # Assert SRST, and report the pre/post events.
72 # Note: no target sees SRST before "pre" or after "post".
74 $t invoke-event reset-assert-pre
77 # C code needs to know if we expect to 'halt'
78 if {[jtag tapisenabled
[$t cget
-chain-position
]]} {
79 $t arp_reset assert
$halt
83 $t invoke-event reset-assert-post
86 # Now de-assert SRST, and report the pre/post events.
87 # Note: no target sees !SRST before "pre" or after "post".
89 $t invoke-event reset-deassert-pre
92 # Again, de-assert code needs to know if we 'halt'
93 if {[jtag tapisenabled
[$t cget
-chain-position
]]} {
94 $t arp_reset deassert
$halt
98 $t invoke-event reset-deassert-post
101 # Pass 1 - Now wait for any halt (requested as part of reset
102 # assert/deassert) to happen. Ideally it takes effect without
103 # first executing any instructions.
106 if {[jtag tapisenabled
[$t cget
-chain-position
]] == 0} {
110 # Wait upto 1 second for target to halt. Why 1sec? Cause
111 # the JTAG tap reset signal might be hooked to a slow
112 # resistor/capacitor circuit - and it might take a while
115 # Catch, but ignore any errors.
116 catch { $t arp_waitstate halted
1000 }
121 if { 0 != [string compare
$s "halted" ] } {
122 return -code error [format "TARGET: %s - Not halted" $t]
127 #Pass 2 - if needed "init"
128 if { 0 == [string compare init
$MODE] } {
130 if {[jtag tapisenabled
[$t cget
-chain-position
]] == 0} {
134 set err
[catch "$t arp_waitstate halted 5000"]
137 $t invoke-event reset-init
143 $t invoke-event reset-end
149 # Temporary migration aid. May be removed starting in January 2011.
150 proc armv4_5 params
{
151 echo
"DEPRECATED! use 'arm $params' not 'armv4_5 $params'"
155 # Target/chain configuration scripts can either execute commands directly
156 # or define a procedure which is executed once all configuration
157 # scripts have completed.
159 # By default(classic) the config scripts will set up the target configuration
160 proc init_targets
{} {
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