This document
http://focus.ti.com/general/docs/techdocsabstract.tsp?abstractName=spraas0c
documents the other ways of booting.
It is 6467 related, but the other davinci's use similar booting methods
(afaik)
Regards
Theo
Gole, Anant wrote:
Nitin,
The terms are are as follows:
1. RBL - Rom bootloader - embedded in the chip
2. UBL - User boot loader - NOT in the chip - RBL boots UBL (except
for NOR and UART boot modes) which boots a secondary bootloader. There
are size constraints on what RBL can boot and since most secondary
bootloaders do not fit in the size UBL is required - provided by PSP
3. UBoot - secondary bootloader that PSP provides - typically used to
boot linux kernel.
When someone says PSP Bootloader it could mean either UBL and UBoot
and both are NOT in the chip - they are on the external NOR/NAND memory.
I assume you have seen the app note "Booting DaVinci EVM from NAND
Flash" which explains the procedure of using UBL/uBoot:
http://focus.ti.com/lit/an/spraaa0/spraaa0.pdf
Regards,
Anant
------------------------------------------------------------------------
*From:* [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] *On
Behalf Of *Nitin Mahajan
*Sent:* Thursday, September 11, 2008 6:01 PM
*To:* [email protected]
*Subject:* RBL, UBL , PSP Boot loader
Hello !
Can some one please explain whether the "TI UBL" and "PSP Bootloader
are same"?
IF PSP Bootloader is not the UBL then where does it reside?
Whether the RBL and UBL already programmed in the DaVinci chip?
regards
-Nitin
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