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Does start_kernel will be called from u-boot

lyf sci
Genius 3720 points

Hi Experts,

I am using AM335x EVMSK.

From the vmlinux binary it is observed that the code starts at the arch/arm/kernel/head.S but while loading zImage from u-boot the startup code will be executed or straightaway the start_kernel() function will be invoked ?

Is it possible to customize the u-boot and change the function being invoked ?

  • 0
    Guru 11260 points
    Hi,

    The u-boot at the end executes the 'bootcmd' environment variable, Usually this command is to load the kernel image from some source(flash/sd/network...) and keep it into the RAM at particular address, the compressed image is decompressed into RAM and
    and then finally the start_kernel() function will be invoked.

    Cheers,
    --Prabhakar Lad