RE: [ECOS] Help on Flash support in Redboot for Xscale.

["Narayana, Venkat A." <NarayVA at nsc-msg01 dot network dot com>]

Mark,
Thanks for explaining. You are correct, in that redboot uses the
default values for FEBR0 and FBSR0( i.e flash base and size).But,
this only perplexes me. Cause, when i configure redboot without
CYGPKG_DEVS_FLASH_IQ80310 and with RAM startup, and load this guy 
into RAM, the it works, imean i could get Redboot prompt etc.
But when i build it for ROM, with Flash support and load the guy
into flash, then it dies somewhere in '_real_platform_setup'.At
this point all the MCU(mem cntrl Unit) registers becomes zero.
What could be happening here? I mean, when i looked into this
macro, it seemed to me pretty straight forward, but still, i am
unable to figure out the why's/where's/what's.
Could you guys pls help me out. Point me to some doc/reading material.

Thanks and Regards
Venkat



>>>>> Mynampati  writes:

> Hi,
> I am trying to incorporate Flash support into Redboot for Xscale, but
> the binary didn't work. When i looked up in the include
file(hal_iq80310.h),
> i didn't find the definition of base address of flash. Did i miss
something 
> here?
> Who sets up FEBR0/1 registers in Xscale?
> Also, where and how the flash gets setup.

> I would appreciate your help.

Flash occupies 0x00000000 - 0x01ffffff on the IQ80310. I forget the
details, but either the flash bank registers are not used or the
default values are used. RedBoot does not touch them.

--Mark