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Diffstat (limited to 'gitlab/issues_text/target_arm/host_missing/accel_missing/1772')
| -rw-r--r-- | gitlab/issues_text/target_arm/host_missing/accel_missing/1772 | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gitlab/issues_text/target_arm/host_missing/accel_missing/1772 b/gitlab/issues_text/target_arm/host_missing/accel_missing/1772 new file mode 100644 index 000000000..82135aef2 --- /dev/null +++ b/gitlab/issues_text/target_arm/host_missing/accel_missing/1772 @@ -0,0 +1,12 @@ +MPS2 AN521 has the wrong number of MPU region defined +Description of problem: +The AN521 is integrating SSE-200 on the MPS2+ FPGA prototyping board. +The current implementation in qemu behaves as though there are 16MPU regions when it really only has 8, as describes as `MPU_NS` and `MPU_S` core configuration parameters in the SSE-200's [Techincal Reference Manual](https://developer.arm.com/documentation/101104/0200/functional-description/cpu-elements/cortex-m33-configurations?lang=en). +Steps to reproduce: +1. Prepare your Zephyr dev environment +2. fix `boards/arm/mps2_an521/mps2_an521.dts` to set `arm,num-mpu-regions` to the appropriate value of 8. +3. build a Zephyr test such as `west build -p -b mps2_an521 -T tests/kernel/interrupt/arch.interrupt` +4. run `qemu-system-arm -machine mps2-an521 -chardev stdio,id=con,mux=on -serial chardev:con -kernel ./build/zephyr/zephyr.elf` +Additional information: +With matching MPU region number in QEMU and Zephyr's DTS, the application shows the test suite's progress & outcome. +If there's a mismatch, the application will enter a fault and not display the expected traces. |