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start_armboot call for armv7 in u-boot

Amit Thakur
Intellectual 320 points

I am going through the arch/arm/cpu/armv7/start.S in u-boot code base and was expecting a call to start_armboot in start.s after these below calls

bl cpu_init_cp15
bl cpu_init_crit

But I couldn't find any such call(start_armboot) there.I am interested in knowing part of code in start.s where C environment has been set and call to .c file is made(in case of omap board,call to /arch/arm/cpu/armv7/ omap4 /board.c has been made from start.s but which instruction do this in start.s).

My platform is keystone 2 based.

Can any one help in going through the start.S.

Thanks

Amit


  • 0
    TI__Guru 50170 points

    Hi, Amit,

    Is the _main in arch/arm/lib/crt0.S what you are looking for?

    Rex

  • 0 in reply to Rex Chang
    Intellectual 320 points

    Thanks Rex.

    I guess l was looking for the same file you pointed out

    I was expecting this file in arch/arm/cpu/armv7/keystone folder same as it was for arch/arm/cpu/armv7/omap3 folder for omap3

    I just wanted to know how did you trace it out to arc/arm/lib folder

    bL  _main call has been made from arch/arm/cpu/armv7/start.s.

    Also I wanted to see the file while memsetup is done for KEYSTONE2 devices.

    For OMAP3 memsetup is done in board.c file.