circuitpython/ports/qemu-arm
Damien George 6e71cde6aa ports: Use default VFS config for import_stat and builtin_open.
For ports with MICROPY_VFS and MICROPY_PY_IO enabled their configuration
can now be simplified to use the defaults for mp_import_stat and
mp_builtin_open.

This commit makes no functional change, except for the following minor
points:
- the built-in "open" is removed from the minimal port (it previously did
  nothing)
- the duplicate built-in "input" is removed from the esp32 port
- qemu-arm now delegates to VFS import/open

Signed-off-by: Damien George <damien@micropython.org>
2022-05-25 13:04:45 +10:00
..
test-frzmpy qemu-arm/test-frzmpy: Add test for freezing constant tuples. 2022-04-14 23:52:14 +10:00
imx6.ld qemu-arm: Add support for Cortex-A9 via sabrelite board. 2021-05-26 16:24:00 +10:00
main.c ports: Use default VFS config for import_stat and builtin_open. 2022-05-25 13:04:45 +10:00
Makefile qemu-arm/moduos: Convert module to use extmod version. 2022-03-09 10:03:23 +11:00
Makefile.test all: Update to point to files in new shared/ directory. 2021-07-12 17:08:10 +10:00
modmachine.c extmod: Make extmod modules use MP_REGISTER_MODULE. 2022-05-18 20:49:12 +10:00
mpconfigport.h ports: Use default VFS config for import_stat and builtin_open. 2022-05-25 13:04:45 +10:00
mphalport.h qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00
mps2.ld qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00
nrf51.ld qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00
qstrdefsport.h all: Add *FORMAT-OFF* in various places. 2020-02-28 10:31:07 +11:00
README.md qemu-arm/README: Update link to toolchain. 2020-06-02 14:09:56 +10:00
startup.c qemu-arm: Add support for Cortex-A9 via sabrelite board. 2021-05-26 16:24:00 +10:00
stm32.ld qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00
test_main.c ports: Use default VFS config for import_stat and builtin_open. 2022-05-25 13:04:45 +10:00
uart.c qemu-arm: Add support for Cortex-A9 via sabrelite board. 2021-05-26 16:24:00 +10:00
uart.h qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00

This is experimental, community-supported port for Cortex-M emulation as provided by QEMU (http://qemu.org).

The purposes of this port are to enable:

  1. Continuous integration
    • run tests against architecture-specific parts of code base
  2. Experimentation
    • simulation & prototyping of anything that has architecture-specific code
    • exploring instruction set in terms of optimising some part of MicroPython or a module
  3. Streamlined debugging
    • no need for JTAG or even an MCU chip itself
    • no need to use OpenOCD or anything else that might slow down the process in terms of plugging things together, pressing buttons, etc.

This port will only work with the GNU ARM Embedded Toolchain and not with CodeSourcery toolchain. You will need to modify LDFLAGS if you want to use CodeSourcery's version of arm-none-eabi. The difference is that CodeSourcery needs -T generic-m-hosted.ld while ARM's version requires --specs=nano.specs --specs=rdimon.specs to be passed to the linker.

To build and run image with builtin testsuite:

make -f Makefile.test test