How to distribution the “$(CMASIZE)”?

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How to distribution the “$(CMASIZE)”?

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传策薛
Contributor V

Hi community:

    I notice that the Android8.1 bsp has below BOARD_KERNEL_CMDLINE:

BOARD_KERNEL_CMDLINE := console=ttymxc0,115200 earlycon=imxuart,0x30860000,115200 init=/init video=HDMI-A-1:1920x1080-32@60 androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale androidboot.fbTileSupport=enable cma=$(CMASIZE) androidboot.primary_display=imx-drm firmware_class.path=/vendor/firmware androidboot.selinux=permissive

 the evk board has 3GB memory ,and its cma=1536M, my question is if I have a 2GB board,how much “$(CMASIZE)” should I distribution? Is there any rules?

thanks.

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b36401
NXP TechSupport
NXP TechSupport

It is application dependent what value to set.
This option splits the memory with common and continuous (CMA) parts.
So you need to configure as much continuous memory as required.

Have a great day,
Victor

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