forked from auracaster/openocd
a5a9121ad6
A target reset can cause a power cycle, causing the DAP to switch from SWD to JTAG. The adapter can loose the connection because it keeps using SWD, triggering error messages. While some ST-Link FW can automatically reconnect the lost SWD connection, this is not possible with older FW nor with other adapters. Force a DAP initialization after reset to eventually switch it back to SWD. Change-Id: I29ea49d2d5ee013ad33371265fd6996353f391d6 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/9462 Tested-by: jenkins
137 lines
3.7 KiB
INI
137 lines
3.7 KiB
INI
# SPDX-License-Identifier: GPL-2.0-or-later
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# STMicroelectronics STM32MP13x (Single Cortex-A7)
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# http://www.st.com/stm32mp1
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# HLA does not support custom CSW nor AP other than 0
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if { [using_hla] } {
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echo "ERROR: HLA transport cannot work with this target."
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echo "ERROR: To use STLink switch to DAP mode, as in \"board/stm32mp13x_dk.cfg\"."
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shutdown
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}
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source [find target/swj-dp.tcl]
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if { [info exists CHIPNAME] } {
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set _CHIPNAME $CHIPNAME
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} else {
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set _CHIPNAME stm32mp13x
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}
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if { [info exists CPUTAPID] } {
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set _CPUTAPID $CPUTAPID
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} else {
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if { [using_jtag] } {
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set _CPUTAPID 0x6ba00477
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} else {
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set _CPUTAPID 0x6ba02477
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}
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}
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# Chip Level TAP Controller, only in jtag mode
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if { [info exists CLCTAPID] } {
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set _CLCTAPID $CLCTAPID
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} else {
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set _CLCTAPID 0x06501041
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}
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swj_newdap $_CHIPNAME tap -expected-id $_CPUTAPID -irlen 4
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if { [using_jtag] } {
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jtag newtap $_CHIPNAME.clc tap -expected-id $_CLCTAPID -irlen 5
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}
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dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.tap -ignore-syspwrupack
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# NOTE: keep ap-num and dbgbase to speed-up examine after reset
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# NOTE: do not change the order of target create
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target create $_CHIPNAME.ap1 mem_ap -dap $_CHIPNAME.dap -ap-num 1
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target create $_CHIPNAME.axi mem_ap -dap $_CHIPNAME.dap -ap-num 0
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target create $_CHIPNAME.cpu cortex_a -dap $_CHIPNAME.dap -ap-num 1 -coreid 0 -dbgbase 0xE00D0000 -defer-examine
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$_CHIPNAME.cpu cortex_a maskisr on
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$_CHIPNAME.cpu cortex_a dacrfixup on
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# interface does not work while srst is asserted
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# this is target specific, valid for every board
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# srst resets the debug unit, behavior equivalent to "srst_pulls_trst"
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reset_config srst_gates_jtag srst_pulls_trst
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adapter speed 5000
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adapter srst pulse_width 200
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# bootrom has an internal timeout of 1 second for detecting the boot flash.
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# wait at least 1 second to guarantee we are out of bootrom
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adapter srst delay 1100
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add_help_text axi_secure "Set secure mode for following AXI accesses"
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proc axi_secure {} {
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$::_CHIPNAME.dap apsel 0
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$::_CHIPNAME.dap apcsw 0x10006000
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}
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add_help_text axi_nsecure "Set non-secure mode for following AXI accesses"
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proc axi_nsecure {} {
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$::_CHIPNAME.dap apsel 0
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$::_CHIPNAME.dap apcsw 0x30006000
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}
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axi_secure
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# mmw with target selection
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proc target_mmw {target reg setbits clearbits} {
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set val [eval $target read_memory $reg 32 1]
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set val [expr {($val & ~$clearbits) | $setbits}]
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eval $target mww $reg $val
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}
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lappend _telnet_autocomplete_skip _enable_debug
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# Uses AP1
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proc _enable_debug {} {
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# keep clock enabled in low-power
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catch {$::_CHIPNAME.ap1 mww 0xe0081004 0x00000004}
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# freeze watchdog 1 and 2 on core halted
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catch {$::_CHIPNAME.ap1 mww 0xe008102c 0x00000004}
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catch {$::_CHIPNAME.ap1 mww 0xe008104c 0x00000008}
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}
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lappend _telnet_autocomplete_skip _handshake_with_wrapper
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# Uses AP1
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proc _handshake_with_wrapper { halt } {
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set dbgmcu_cr 0
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catch {set dbgmcu_cr [eval $::_CHIPNAME.ap1 read_memory 0xe0081004 32 1]}
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if {[expr {($dbgmcu_cr & 0x07) == 0x00}]} {
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echo "\nWARNING: FSBL wrapper not detected. Board in dev boot mode?\n"
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return
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}
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if { $halt } {
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$::_CHIPNAME.ap1 arp_halt
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$::_CHIPNAME.ap1 mww 0xe00d0300 0
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target_mmw $::_CHIPNAME.ap1 0xe00d0088 0x00004000 0
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}
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$::_CHIPNAME.ap1 mww 0xe0081004 0x7
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}
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# FIXME: most of handlers below will be removed once reset framework get merged
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$_CHIPNAME.ap1 configure -event reset-assert-post {
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adapter assert srst
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}
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$_CHIPNAME.ap1 configure -event reset-deassert-pre {
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adapter deassert srst deassert trst
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catch {dap init}
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catch {$::_CHIPNAME.dap apid 1}
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$::_CHIPNAME.ap1 arp_examine
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_handshake_with_wrapper $halt
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_enable_debug
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$::_CHIPNAME.cpu arp_examine
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if { $halt } {
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$::_CHIPNAME.cpu arp_halt
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}
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}
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$_CHIPNAME.ap1 configure -event examine-end {
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_enable_debug
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$::_CHIPNAME.cpu arp_examine
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}
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