# Show flash in human readable form
# This is an example of a human readable form of a low level fn
-proc flash_banks {} {
- set i 0
+proc flash_banks {} {
+ set i 0
set result ""
foreach {a} [ocd_flash_banks] {
if {$i > 0} {
set result "$result\n"
}
set result [format "$result#%d: %s at 0x%08x, size 0x%08x, buswidth %d, chipwidth %d" $i $a(name) $a(base) $a(size) $a(bus_width) $a(chip_width)]
- set i [expr $i+1]
- }
+ set i [expr $i+1]
+ }
return $result
}
global ocd_helptext
set cmd $args
foreach a [lsort $ocd_helptext] {
- if {[string length $cmd]==0||[string first $cmd $a]!=-1||[string first $cmd [lindex $a 1]]!=-1} {
+ if {[string length $cmd] == 0 || \
+ [string first $cmd $a] != -1 || \
+ [string first $cmd [lindex $a 1]] != -1} \
+ {
set w 50
set cmdname [lindex $a 0]
set h [lindex $a 1]
set n 0
while 1 {
if {$n > [string length $h]} {break}
-
- set next_a [expr $n+$w]
- if {[string length $h]>$n+$w} {
- set xxxx [string range $h $n [expr $n+$w]]
- for {set lastpos [expr [string length $xxxx]-1]} {$lastpos>=0&&[string compare [string range $xxxx $lastpos $lastpos] " "]!=0} {set lastpos [expr $lastpos-1]} {
+
+ set next_a [expr $n + $w]
+ if {[string length $h] > $n + $w} \
+ {
+ set xxxx [string range $h $n [expr $n + $w]]
+ for {set lastpos [expr [string length $xxxx] - 1]} \
+ {$lastpos >= 0 && [string compare \
+ [string range $xxxx $lastpos $lastpos] " "] != 0} \
+ {set lastpos [expr $lastpos - 1]} \
+ {
}
#set next_a -1
- if {$lastpos!=-1} {
- set next_a [expr $lastpos+$n+1]
+ if {$lastpos != -1} {
+ set next_a [expr $lastpos + $n + 1]
}
}
-
-
- puts [format "%-25s %s" $cmdname [string range $h $n [expr $next_a-1]] ]
+
+ puts [format "%-25s %s" $cmdname \
+ [string range $h $n [expr $next_a-1]] ]
set cmdname ""
set n [expr $next_a]
}
source [find $filename]
}
-#proc daemon_reset {} {
-# puts "Daemon reset is obsolete. Use -c init -c \"reset halt\" at end of openocd command line instead");
-#}
-
add_help_text script "<filename> - filename of OpenOCD script (tcl) to run"
# Handle GDB 'R' packet. Can be overriden by configuration script,
# but it's not something one would expect target scripts to do
# normally
-proc ocd_gdb_restart {target_num} {
+proc ocd_gdb_restart {target_id} {
# Fix!!! we're resetting all targets here! Really we should reset only
# one target
reset halt
}
-# If RCLK is not supported, use fallback_speed_khz
-proc jtag_rclk {fallback_speed_khz} {
- if {[catch {jtag_khz 0}]!=0} {
- jtag_khz $fallback_speed_khz
- }
+
+# This reset logic may be overridden by board/target/... scripts as needed
+# to provide a reset that, if possible, is close to a power-up reset.
+#
+# Exit requirements include: (a) JTAG must be working, (b) the scan
+# chain was validated with "jtag arp_init" (or equivalent), (c) nothing
+# stays in reset. No TAP-specific scans were performed. It's OK if
+# some targets haven't been reset yet; they may need TAP-specific scans.
+#
+# The "mode" values include: halt, init, run (from "reset" command);
+# startup (at OpenOCD server startup, when JTAG may not yet work); and
+# potentially more (for reset types like cold, warm, etc)
+proc init_reset { mode } {
+ jtag arp_init-reset
}
-add_help_text jtag_rclk "fallback_speed_khz - set JTAG speed to RCLK or use fallback speed"
+global in_process_reset
+set in_process_reset 0
+
+# Catch reset recursion
proc ocd_process_reset { MODE } {
+ global in_process_reset
+ if {$in_process_reset} {
+ set in_process_reset 0
+ return -code error "'reset' can not be invoked recursively"
+ }
+
+ set in_process_reset 1
+ set success [expr [catch {ocd_process_reset_inner $MODE} result]==0]
+ set in_process_reset 0
+
+ if {$success} {
+ return $result
+ } else {
+ return -code error $result
+ }
+}
+
+proc ocd_process_reset_inner { MODE } {
+ set targets [target names]
# If this target must be halted...
set halt -1
return -error "Invalid mode: $MODE, must be one of: halt, init, or run";
}
- foreach t [ target names ] {
+ # Target event handlers *might* change which TAPs are enabled
+ # or disabled, so we fire all of them. But don't issue any
+ # target "arp_*" commands, which may issue JTAG transactions,
+ # unless we know the underlying TAP is active.
+ #
+ # NOTE: ARP == "Advanced Reset Process" ... "advanced" is
+ # relative to a previous restrictive scheme
+
+ foreach t $targets {
# New event script.
$t invoke-event reset-start
}
- # Init the tap controller.
- jtag arp_init-reset
+ # Use TRST or TMS/TCK operations to reset all the tap controllers.
+ # TAP reset events get reported; they might enable some taps.
+ init_reset $MODE
- # Examine all targets.
- foreach t [ target names ] {
- $t arp_examine
+ # Examine all targets on enabled taps.
+ foreach t $targets {
+ if {[jtag tapisenabled [$t cget -chain-position]]} {
+ $t arp_examine
+ }
}
- # Let the C code know we are asserting reset.
- foreach t [ target names ] {
+ # Assert SRST, and report the pre/post events.
+ # Note: no target sees SRST before "pre" or after "post".
+ foreach t $targets {
$t invoke-event reset-assert-pre
+ }
+ foreach t $targets {
# C code needs to know if we expect to 'halt'
- $t arp_reset assert $halt
+ if {[jtag tapisenabled [$t cget -chain-position]]} {
+ $t arp_reset assert $halt
+ }
+ }
+ foreach t $targets {
$t invoke-event reset-assert-post
}
- # Now de-assert reset.
- foreach t [ target names ] {
+ # Now de-assert SRST, and report the pre/post events.
+ # Note: no target sees !SRST before "pre" or after "post".
+ foreach t $targets {
$t invoke-event reset-deassert-pre
- # Again, de-assert code needs to know..
- $t arp_reset deassert $halt
+ }
+ foreach t $targets {
+ # Again, de-assert code needs to know if we 'halt'
+ if {[jtag tapisenabled [$t cget -chain-position]]} {
+ $t arp_reset deassert $halt
+ }
+ }
+ foreach t $targets {
$t invoke-event reset-deassert-post
}
- # Pass 1 - Now try to halt.
+ # Pass 1 - Now wait for any halt (requested as part of reset
+ # assert/deassert) to happen. Ideally it takes effect without
+ # first executing any instructions.
if { $halt } {
- foreach t [target names] {
-
+ foreach t $targets {
+ if {[jtag tapisenabled [$t cget -chain-position]] == 0} {
+ continue
+ }
+
# Wait upto 1 second for target to halt. Why 1sec? Cause
# the JTAG tap reset signal might be hooked to a slow
# resistor/capacitor circuit - and it might take a while
# to charge
-
+
# Catch, but ignore any errors.
catch { $t arp_waitstate halted 1000 }
-
+
# Did we succeed?
set s [$t curstate]
-
+
if { 0 != [string compare $s "halted" ] } {
return -error [format "TARGET: %s - Not halted" $t]
}
#Pass 2 - if needed "init"
if { 0 == [string compare init $MODE] } {
- foreach t [target names] {
+ foreach t $targets {
+ if {[jtag tapisenabled [$t cget -chain-position]] == 0} {
+ continue
+ }
+
set err [catch "$t arp_waitstate halted 5000"]
# Did it halt?
if { $err == 0 } {
- $t invoke-event reset-init
+ $t invoke-event reset-init
}
}
}
- foreach t [ target names ] {
+ foreach t $targets {
$t invoke-event reset-end
}
}
-# stubs for targets scripts that do not have production procedure
-proc production_info {} {
- return "Imagine an explanation here..."
-}
-add_help_text production_info "Displays information on production procedure for target script. Implement this procedure in target script."
-
-proc production {firmwarefile serialnumber} {
- puts "Imagine production procedure running successfully. Programmed $firmwarefile with serial number $serialnumber"
-}
-
-add_help_text production "<serialnumber> - Runs production procedure. Throws exception if procedure failed. Prints progress messages. Implement this procedure in the target script."
-
-proc production_test {} {
- puts "Imagine nifty test procedure having run to completion here."
-}
-add_help_text production "Runs test procedure. Throws exception if procedure failed. Prints progress messages. Implement in target script."
-
-add_help_text cpu "<name> - prints out target options and a comment on CPU which matches name"
-
-# A list of names of CPU and options required
-set ocd_cpu_list {
- {
- name IXP42x
- options {xscale -variant IXP42x}
- comment {IXP42x cpu}
- }
- {
- name arm7
- options {arm7tdmi -variant arm7tdmi}
- comment {vanilla ARM7}
- }
-}
-
-# Invoked from Tcl code
-proc ocd_cpu {args} {
- set name $args
- set result ""
- global ocd_cpu_list
- foreach a [lsort $ocd_cpu_list] {
- if {[string length $args]==0||[string first [string toupper $name] [string toupper "$a(name)$a(options)$a(comment)"]]!=-1} {
- lappend result $a
- }
- }
- return $result
-}
+#########
-proc cpu {args} {
- # 0123456789012345678901234567890123456789012345678901234567890123456789
- puts "CPU Options Comment"
- foreach a [lsort [ocd_cpu $args]] {
- puts [format "%-20s%-40s%s" $a(name) $a(options) $a(comment)]
- }
-}
+# REVISIT power_restore, power_dropout, srst_deasserted, srst_asserted
+# are currently neither documented nor supported except on ZY1000.
proc power_restore {} {
puts "Sensed power restore."
puts "Sensed nSRST asserted."
}
+#########
+
# catch any exceptions, capture output and return output
proc capture_catch {a} {
catch {
capture {uplevel $a}
} result
- return $result
+ return $result
+}
+
+
+# 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
+ }
}
Code Review / openocd.git / blobdiff