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tcl/board: add pico-debug support

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pico-debug is not a board; it is a virtual CMSIS-DAP adapter that
runs on the same RP2040 also being debugged.  This is possible due
to pico-debug running on the normally-dormant second Cortex-M0+
core (Core1), providing debugging of the first core (Core0).
As such, it could be used on a variety of RP2040-based boards.

Since a flash driver is useful (if not essential), a flash driver
is included.  This driver code originated on RPi's bespoke OpenOCD
fork; lipstick was added to this particular pig to make it more
presentable on OpenOCD proper.

no new Clang analyzer warnings

Change-Id: I31f98b5ea1664f0adfbc184b57efba963acfb958
Signed-off-by: Peter Lawrence <majbthrd@gmail.com>
Reviewed-on: http://openocd.zylin.com/6075
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
This commit is contained in:
Peter Lawrence
2021-03-02 15:21:28 -06:00
committed by Tomas Vanek
parent 64a3e7ba4f
commit b60d06ae32
6 changed files with 516 additions and 0 deletions
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11
doc/openocd.texi
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@@ -6876,6 +6876,17 @@ Note: only Main and Work flash regions support Erase operation.
@end deffn
@end deffn
@deffn {Flash Driver} {rp2040}
Supports RP2040 "Raspberry Pi Pico" microcontroller.
RP2040 is a dual-core device with two CM0+ cores. Both cores share the same
Flash/RAM/MMIO address space. Non-volatile storage is achieved with an
external QSPI flash; a Boot ROM provides helper functions.
@example
flash bank $_FLASHNAME rp2040_flash $_FLASHBASE $_FLASHSIZE 1 32 $_TARGETNAME
@end example
@end deffn
@deffn {Flash Driver} {sim3x}
All members of the SiM3 microcontroller family from Silicon Laboratories
include internal flash and use ARM Cortex-M3 cores. It supports both JTAG