-# script for Cypress PSoC 41xx/42xx family
+# script for Cypress PSoC 4 devices
#
# PSoC 4 devices support SWD transports only.
}
swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
+dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
set _TARGETNAME $_CHIPNAME.cpu
-target create $_TARGETNAME cortex_m -chain-position $_TARGETNAME
+target create $_TARGETNAME cortex_m -dap $_CHIPNAME.dap
$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME psoc4 0 0 0 0 $_TARGETNAME
-adapter_khz 1500
+adapter speed 1500
# Reset, bloody PSoC 4 reset
#
# set in time frame 400 usec delayed about 1 msec from reset.
#
# OpenOCD have no standard way how to set TEST_MODE in specified time frame.
-# TEST_MODE flag is set before reset instead. It worked for tested chips
-# despite it is not guaranteed by specification.
+# As a workaround the TEST_MODE flag is set before reset instead.
+# It worked for the oldest family PSoC4100/4200 even though it is not guaranteed
+# by specification.
+#
+# Newer families like PSoC 4000, 4100M, 4200M, 4100L, 4200L and PSoC 4 BLE
+# clear TEST_MODE flag during device reset so workaround is not possible.
+# Use a KitProg adapter for these devices or "reset halt" will not stop
+# before executing user code.
#
# 3) SWD cannot be connected during system initialization after reset.
# This might be a reason for unconnecting ST-Link v2 when deasserting reset.
cortex_m reset_config sysresetreq
}
+proc psoc4_get_family_id {} {
+ set err [catch {set romtable_pid [read_memory 0xF0000FE0 32 3]}]
+ if { $err } {
+ return 0
+ }
+ if { [expr {[lindex $romtable_pid 0] & 0xffffff00 }]
+ || [expr {[lindex $romtable_pid 1] & 0xffffff00 }]
+ || [expr {[lindex $romtable_pid 2] & 0xffffff00 }] } {
+ echo "Unexpected data in ROMTABLE"
+ return 0
+ }
+ set designer_id [expr {(( [lindex $romtable_pid 1] & 0xf0 ) >> 4) | (( [lindex $romtable_pid 2] & 0xf ) << 4 ) }]
+ if { $designer_id != 0xb4 } {
+ echo [format "ROMTABLE Designer ID 0x%02x is not Cypress" $designer_id]
+ return 0
+ }
+ set family_id [expr {( [lindex $romtable_pid 0] & 0xff ) | (( [lindex $romtable_pid 1] & 0xf ) << 8 ) }]
+ return $family_id
+}
+
proc ocd_process_reset_inner { MODE } {
- if { 0 != [string compare psoc4.cpu [target names]] } {
- return -code error "PSoC 4 reset can handle only one psoc4.cpu target";
+ global PSOC4_USE_ACQUIRE PSOC4_TEST_MODE_WORKAROUND
+ global _TARGETNAME
+
+ if { 0 != [string compare $_TARGETNAME [target names]] } {
+ return -code error "PSoC 4 reset can handle only one $_TARGETNAME target";
}
- set t psoc4.cpu
+ set t $_TARGETNAME
# If this target must be halted...
set halt -1
return -code error "Invalid mode: $MODE, must be one of: halt, init, or run";
}
+ if { ! [info exists PSOC4_USE_ACQUIRE] } {
+ if { 0 == [string compare [adapter name] kitprog ] } {
+ set PSOC4_USE_ACQUIRE 1
+ } else {
+ set PSOC4_USE_ACQUIRE 0
+ }
+ }
+ if { $PSOC4_USE_ACQUIRE } {
+ set PSOC4_TEST_MODE_WORKAROUND 0
+ } elseif { ! [info exists PSOC4_TEST_MODE_WORKAROUND] } {
+ if { [psoc4_get_family_id] == 0x93 } {
+ set PSOC4_TEST_MODE_WORKAROUND 1
+ } else {
+ set PSOC4_TEST_MODE_WORKAROUND 0
+ }
+ }
+
#$t invoke-event reset-start
$t invoke-event reset-assert-pre
- set TEST_MODE 0x40030014
- if { $halt == 1 } {
- mww $TEST_MODE 0x80000000
+ if { $halt && $PSOC4_USE_ACQUIRE } {
+ catch { [adapter name] acquire_psoc }
+ $t arp_examine
} else {
- mww $TEST_MODE 0
+ if { $PSOC4_TEST_MODE_WORKAROUND } {
+ set TEST_MODE 0x40030014
+ if { $halt == 1 } {
+ catch { mww $TEST_MODE 0x80000000 }
+ } else {
+ catch { mww $TEST_MODE 0 }
+ }
+ }
+
+ $t arp_reset assert 0
}
- $t arp_reset assert 0
$t invoke-event reset-assert-post
$t invoke-event reset-deassert-pre
if {![using_hla]} { # workaround ST-Link v2 fails and forcing reconnect
}
# Check if PSoC CPU is stopped in system ROM
- set pc [ocd_reg pc]
+ set pc [reg pc]
regsub {pc[^:]*: } $pc "" pc
if { $pc < 0x10000000 || $pc > 0x1000ffff } {
- return -code error [format "TARGET: %s - Not halted is system ROM" $t]
+ set hint ""
+ set family_id [psoc4_get_family_id]
+ if { $family_id == 0x93 } {
+ set hint ", use 'reset_config none'"
+ } elseif { $family_id > 0x93 } {
+ set hint ", use a KitProg adapter"
+ }
+ return -code error [format "TARGET: %s - Not halted in system ROM%s" $t $hint]
}
# Set registers to reset vector values
- mem2array value 32 0 2
- reg pc [expr $value(1) & 0xfffffffe ]
- reg msp $value(0)
+ set value [read_memory 0x0 32 2]
+ reg pc [expr {[lindex $value 1] & 0xfffffffe}]
+ reg msp [lindex $value 0]
- mww $TEST_MODE 0
+ if { $PSOC4_TEST_MODE_WORKAROUND } {
+ catch { mww $TEST_MODE 0 }
+ }
}
#Pass 2 - if needed "init"
projects / fw / openocd / blobdiff