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Embedded Scalable Platforms: Heterogeneous SoC architecture and IP integration made easy
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'make linux' creates a single-core image ? #107

Closed rdolbeau closed 3 years ago

rdolbeau commented 3 years ago

Describe the bug

I've followed the tutorial for multicore with leon3; everything went fine and I can log on the SoC via the console. However, Linux only uses one core out of 4.

To Reproduce

Steps to reproduce the behavior:

  1. Follow the multicore tutorial

Expected behavior

I expected to see 4 cores in Linux, but there's only one.

This is not surprising, as in the linux configuration ./soft-build/leon3/linux-build/.config I see:

CONFIG_BROKEN_ON_SMP=y CONFIG_GENERIC_SMP_IDLE_THREAD=y # CONFIG_SMP is not set

Screenshots

N/A

Desktop (please complete the following information):

Docker image with recommended Vivado (2019.2) installed in it, bitstream & software generation were fine.

Additional context

Great tutorial thanks :-)

davide-giri commented 3 years ago

Hi,

In the local Makefile (the one in the folder where you are launching all make commands) you should uncomment this line

LINUX_SMP = 1

Then you need to recompile linux:

make linux-distclean
make linux

Let me know if this solves it. Thanks!

rdolbeau commented 3 years ago

@davide-giri Thanks for the quick answer :-) Just tested, indeed it works fine that way, I have 4 Leon3 now in Linux. Maybe this should be mentioned in the multicore tutorial?

davide-giri commented 3 years ago

Yes, it definitely should be mentioned in the tutorial. Thanks for catching this, I'll make sure to update the tutorial asap.

Thanks!