mirror of
https://git.code.sf.net/p/openocd/code
synced 2025-04-03 23:55:37 +00:00
c986b4dbf2
BL602, BL702 and BL702L series of chips are sharing same architecture, so they all need same software reset mechanism as well. Only difference (in terms of configuration needed for JTAG) are TAP ID, workarea address and size. This is addressed by creating bl602_common.cfg tcl file, which contains all those common stuff between the chips. The script is prefixed by bl602, as this was first *publicly* available chip from Bouffalo with this architecture. This patch also improves reset mechanism. Previous reset mechanism did not worked properly when slower JTAG adapter was used (it attached too late). New reset mechanism uses various methods to keep CPU in BootROM, until the JTAG adapter does not attach again after reset. Additionally, we trigger SW Reset by directly using DMI commands to write to register with system bus method, to avoid getting error about unsuccessful write. The new method works on both FT232H (8MHz JTAG clock) and unnamed CMSIS-DAP dongle (1.5MHz JTAG clock). Change-Id: I5be3694927793fd3f64c9ed4ee6ded2db0d25cae Signed-off-by: Marek Kraus <gamelaster@outlook.com> Reviewed-on: https://review.openocd.org/c/openocd/+/8593 Tested-by: jenkins Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
35 lines
752 B
INI
35 lines
752 B
INI
# SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#
|
|
# Bouffalo Labs BL602 and BL604 target
|
|
#
|
|
# https://en.bouffalolab.com/product/?type=detail&id=1
|
|
#
|
|
# Default JTAG pins: (if not changed by eFuse configuration)
|
|
# TDO - GPIO11
|
|
# TMS - GPIO12
|
|
# TCK - GPIO14
|
|
# TDI - GPIO17
|
|
#
|
|
|
|
if { [info exists CHIPNAME] } {
|
|
set BL602_CHIPNAME $CHIPNAME
|
|
} else {
|
|
set BL602_CHIPNAME bl602
|
|
}
|
|
|
|
set CPUTAPID 0x20000c05
|
|
|
|
# For work-area we use DTCM instead of ITCM, due ITCM is used as buffer for L1 cache and XIP
|
|
set WORKAREAADDR 0x42014000
|
|
set WORKAREASIZE 0xC000
|
|
|
|
source [find target/bl602_common.cfg]
|
|
|
|
# JTAG reset is broken. Read comment of bl602_sw_reset_hbn_wait function for more information
|
|
$_TARGETNAME configure -event reset-assert {
|
|
halt
|
|
|
|
bl602_sw_reset_hbn_wait
|
|
}
|