Adds initial support for the BL702 series of chips, BL702, BL704 and BL706.
No flash bank support yet.
File name bl702.tcl was chosen over bl70x.tcl, because Bouffalo Lab
uses bl702 to mark the whole series in many of their tools.
The ndmreset bit in the RISC-V Debug Module isn't implemented correctly,
so it doesn't trigger a system reset as it should.
To solve this problem, the software reset is implemented
in the reset-assert-pre hook, which uses best reset method I could find.
What is not reset is the GLB core, which handles GPIOs, pinmux, etc.
The reset mechanism has been extensively tested, and works correctly
for both "reset run" and "reset halt", which the latter
halts very early in the BootROM.
Change-Id: I5ced6eb3902d1b9d9c1bba56f817ec5dc3493cb0
Signed-off-by: Marek Kraus <gamelaster@outlook.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/8407
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
# SPDX-License-Identifier: GPL-2.0-or-later
Prerequisites:
The users of OpenOCD as well as computer programs interacting with OpenOCD are expecting that certain commands
do the same thing across all the targets.
Rules to follow when writing scripts:
1. The configuration script should be defined such as , for example, the following sequences are working:
reset
flash info <bank>
and
reset
flash erase_address <start> <len>
and
reset init
load
In most cases this can be accomplished by specifying the default startup mode as reset_init (target command
in the configuration file).
2. If the target is correctly configured, flash must be writable without any other helper commands. It is
assumed that all write-protect mechanisms should be disabled.
3. The configuration scripts should be defined such as the binary that was written to flash verifies
(turn off remapping, checksums, etc...)
flash write_image [file] <parameters>
verify_image [file] <parameters>
4. adapter speed sets the maximum speed (or alternatively RCLK). If invoked
multiple times only the last setting is used.
interface/xxx.cfg files are always executed *before* target/xxx.cfg
files, so any adapter speed in interface/xxx.cfg will be overridden by
target/xxx.cfg. adapter speed in interface/xxx.cfg would then, effectively,
set the default JTAG speed.
Note that a target/xxx.cfg file can invoke another target/yyy.cfg file,
so one can create target subtype configurations where e.g. only
amount of DRAM, oscillator speeds differ and having a single
config file for the default/common settings.
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