Re: [ECOS] Newbie questions: AT91SAM7 series

["Andrea Michelotti" <amichelotti at atmel dot com>]

Hi,
what I can suggest you (from my little experience) is to download ecos 
surces from cvs (read http://ecos.sourceware.org/anoncvs.html), then go into 
package/hal/arm/at91/.
In var/current/var_io.h you should modify some device memory address for 
SAM.
You should look/modify also ebxx/current/include/hal_platform_setup that is 
assembler code executed
at startup. In particular SAM, as far as I know, doesn't have EBI and it has 
a very simple remap mechanism. The memory map is specified into 
ebxx/current/include/pkgconf.
However in the ecos site you can find good documentation.

regards,
Andrea
----------------------
Andrea Michelotti -
hw/sw co-design Manager
ATMEL Rome -







----- Original Message ----- 
From: "Shawn T. Lim" <slim@flatlinesolutions.com>
To: <ecos-discuss@ecos.sourceware.org>
Sent: Saturday, December 11, 2004 5:03 AM
Subject: [ECOS] Newbie questions: AT91SAM7 series


> Hello all!
>
>            This is my first foray into eCos, and I am quite excited.
> I'm looking forward to actively participating in this community once I
> get myself up to speed =).
>
>            I purchased an Atmel AT91SAM7S64-IAR Kickstart kit (JTAG
> interface, Eval board, and IAR Workbench) about a week ago, and I am
> interested in porting RedBoot, and eventually eCos for it.
>
>            Here are a few questions that I have:
>
> 1)       The kit came with an IAR J-Link USB JTAG interface, however the
> only thing I have been able to upload to my chip are BIN files compiled
> through IAR's own development tools. I can't seem to find a way to
> upload ELF and BIN files from other sources (i.e. the RedBoot binaries
> for the EB40 that are widely available), at least not through the
> software included in IAR's kit. Is there some kind of generic JTAG Flash
> application I can be using to write RedBoot to flash?
>
> 2)       Unlike the Atmel's EBxx boards, there is no debugger like Angel
> running. Because of this, I will have to load Redboot via my JTAG
> interface, correct? (Once I solve question 1)
>
> 3)       I don't expect the RedBoot binaries compiled for the EB40 to
> work on my SAM7 eval board without some modifications. I have installed
> the arm-elf toolchain, cygwin, and even the eCos Configuration Tool,
> however I'm a bit lost on where to start modifying RedBoot code
> specifically to work. Can someone point me in the right direction for
> porting RedBoot, and even more basic resources on how to build RedBoot?
> Even a tutorial on how the existing EB40 binaries were built would be
> great!
>
>
> Thanks in advance!
>
> --
> Shawn T. Lim
> Flatline Solutions Inc
>
>
>
> --
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