AM62P: Change eMMC to 256MB NAND Flash, strip libLLVM.so from rootfs.

Donghui Peng

Prodigy 110 points

Part Number: AM62P

SDK: ti-processor-sdk-linux-am62pxx-evm-11.02.08.02

To reduce cost , we need to trim the filesystem to under 256MB.

But the libLLVM.so library takes up 96MB and is used by tidss_drv.so.

Is there any way to optimize/remove the libLLVM.so library

5 months ago

0 Vinuchandran A V 5 months ago

TI__Expert 6170 points

Hi Donghui,

I'll get back to you in three days after checking this out.

Regards,
Vinu

0 Vinuchandran A V 5 months ago in reply to Vinuchandran A V

TI__Expert 6170 points

Hi Donghul,

The libLLVM is being used by mesa-pvr.

Create a bbappend file for mesa-pvr -

meta-arago/meta-arago-distro/recipes-graphics/mesa/mesa-pvr_%.bbappend

# AM62P: Strip unused drivers to eliminate libLLVM.so

PACKAGECONFIG:remove = "gallium-llvm virgl zink"

GALLIUMDRIVERS:pn-mesa-pvr = "swrast"

EXTRA_OEMESON:append = " -Dllvm=disabled "

Rebuild mesa-pvr and rebuild the image

bitbake -c cleansstate mesa-pvr
bitbake mesa-pvr
bitbake tisdk-default-image

This should remove the libLLVM dependency and reduce the size.

Regards,
Vinu

0 Donghui Peng 5 months ago in reply to Vinuchandran A V

Prodigy 110 points

Hi Vinu，

I need to build a version of tidss_dri.so that is completely independent of LLVM.

0 Donghui Peng 5 months ago in reply to Donghui Peng

Prodigy 110 points

0 Vinuchandran A V 5 months ago in reply to Donghui Peng

TI__Expert 6170 points

Hi Donghui,

I have verified that the libLLVM dependency is completely removed with the steps that I've shared.

Sharing a screenshot for your reference.

Regards,
Vinu

+1 Yong Zhang 4 months ago in reply to Vinuchandran A V

TI__Mastermind 20131 points

Dear Donghui.

may I ask if Yocto environment is ok on your side? and if this solution works?

Vinuchandran A V said:
The libLLVM is being used by mesa-pvr.

Create a bbappend file for mesa-pvr -

meta-arago/meta-arago-distro/recipes-graphics/mesa/mesa-pvr_%.bbappend
Fullscreen
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# AM62P: Strip unused drivers to eliminate libLLVM.so
PACKAGECONFIG:remove = "gallium-llvm virgl zink"
GALLIUMDRIVERS:pn-mesa-pvr = "swrast"
EXTRA_OEMESON:append = " -Dllvm=disabled "
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
# AM62P: Strip unused drivers to eliminate libLLVM.so

PACKAGECONFIG:remove = "gallium-llvm virgl zink"

GALLIUMDRIVERS:pn-mesa-pvr = "swrast"

EXTRA_OEMESON:append = " -Dllvm=disabled "
Rebuild mesa-pvr and rebuild the image
Fullscreen
1
2
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bitbake -c cleansstate mesa-pvr
bitbake mesa-pvr
bitbake tisdk-default-image
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
bitbake -c cleansstate mesa-pvr
bitbake mesa-pvr
bitbake tisdk-default-image
This should remove the libLLVM dependency and reduce the size.

thanks a lot!

yong

0 Donghui Peng 4 months ago in reply to Yong Zhang

Prodigy 110 points

The issue has been resolved. I recompiled Yocto in your way and remove the libLLVM dependencies.

Arm-based microcontrollers

Arm-based microcontrollers forum

AM62P: Change eMMC to 256MB NAND Flash, strip libLLVM.so from rootfs.