Hi,
I plan to use a davinci DM365 processor booting directly from a NOR flash, without using the UBL provided by Texas. So I do not want to set CONFIG_SKIP_LOWLEVEL_INIT in my config.
I am confused about the low level initialization for davinci SOC: arch/arm/cpu/arm926ejs/davinci/lowlevel_init.S sounds to be general for all DaVinci processors, but after a check I can see that it does not match at least for the DM365 (most offset are wrong). I have search for boards using this file, and it seems that only the sonata board could use it, if it does not boot from nand (it has a DM644).
Is the actual lowlevel_init.S really specialized only for the DM644 ? Do we need a specialized file for the other processors, too ? Or am I missing something ?
Yes the lowlevel_init.S is meant only for DM6446.
Later TI decided to do all the low level init in the UBL for both NAND and NOR boot modes. Thus the lowlevel_init.S actually became redundant w.r.t to our most recent releases, but for legacy reasons it continues to be present in U-Boot.
Sandeep