u-boot source code flow for LS2085A QDS Board

[naveennvn]

Hi All,

I'm working on the Freescale Layerscape Processor (LS2085A QDS) Board. I just want to know the u-boot source code flow in the Layerscape2-SDK-20150515-yocto SDK. If anybody has already worked on this, please help me out.

Thanks..

Naveen.

[yipingwang]

Hello naveennvn,

Please check whether the following information would be helpful for you.

LS2085 CPU

_start : arch/arm/cpu/armv8/start.S, setup exception vector table and each handler.

reset : Setup SCR_EL3=NS|IRQ|FIQ|EA; Initialize CNTFRQ; Enable FP/SIMD; Apply core errata.

  lowlevel_init:

    ccn504_set_qos: Configure CoreLink CCN-504, Cache Coherent Network

    gic_init_secure:

    gic_init_secure_percpu: Configure GIC-500

    secondary_boot_func: Bootup secondary core

  lowlevel_int:  ​Return to reset

reset:

Board side:

_main:

board_init_f: Initialize hardware in flash DDR4

relocate_code: Setup C environment and run in RAM. Copy u-boot code/initialized data to RAM;Setup stack pointer;Clear bss

board_init_r: Initialize hardware in RAM, Flash initialization, init environment, PEX initialization, Console initialize, Enable Ethernet.

Main_loop

_main

Have a great day,
Yiping

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[naveennvn]

Hi Yiping,

          Now i got the U-boot source code flow. Thanks for your great support.

Thanks,

Naveen