This is the mail archive of the
ecos-discuss@sources.redhat.com
mailing list for the eCos project.
Re: Loading the rom on an AT91EB40A
- From: "Roman Jordan" <RomanJordan at gmx dot de>
- To: Jay Bennie <jay at lincore dot co dot uk>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Tue, 21 Oct 2003 16:39:00 +0200 (MEST)
- Subject: Re: [ECOS] Loading the rom on an AT91EB40A
- References: <1066743305.13667.35.camel@blade>
Hi,
yes, you have to give the localtion of the file you want to download.
The command
load -m ymodem -b %{FREEMEMLO}
brings RedBoot in download mode. The download has to be started using
minicom (key CTRL-a s). Select ymodem and select the file. You can watch the
progress.
After the download is complete, you can burn the image into flash.
Greetings, Roman Jordan
> Hi,
>
> after days of digging, I'm starting to get the hang of eCos and embedded
> development in general.
>
> Anyway to describe the setup.
>
> I have a standard AT91EB40A(Ver 1.0 Rev 0) Eval board from Atmel.
> Flash is a AT49BV1614A
>
> so far - after many wrong turns i have the following
>
> ecos-2.0 installed to /opt/ecos as installed by the scripts
> cvs is current (21st October 2003) and located in /opt/ecos/cvs/ecos
>
> i have modified /opt/ecos/ecosenv.sh to point to the cvs Package
> repository
>
> Then in my home directory i have ecos/ram and ecos/rom
>
> to build the file redboot.elf (Ram version)
>
> i run the following commands:
> $ cd ram
> $ ecosconfig new eb40a redboot
> $ ecosconfig import
>
/opt/ecos/cvs/ecos/ecos/packages/hal/arm/at91/eb40a/current/misc/redboot_RAM.ecm
> $ ecosconfig tree
> $ make
>
> to build the ROM files
>
> $ cd ../rom
> $ ecosconfig new eb40a redboot
> $ ecosconfig import
>
/opt/ecos/cvs/ecos/ecos/packages/hal/arm/at91/eb40a/current/misc/redboot_ROM.ecm
> $ ecosconfig tree
> $ make
>
> then return to ram/install/bin
> and type
> $ arm-elf-gdb redboot.elf
>
> <now in GDB type>
> tar rdi s=/dev/ttyS0
> set $cpsr=0xd3
> load
> <the file loads>
> cont
> <escape with ^Z>
>
> < now open minicom >
> $ minicom
> <the following is the output from this command. >
> // ================================ Start of paste ===============
>
> RedBoot> AT S7=45 S0=0 L1 V1 X4 &c1 E1 Q0
> ** Error: Illegal command: "AT"
> RedBoot> version
>
>
> RedBoot(tm) bootstrap and debug environment [RAM]
> Non-certified release, version UNKNOWN - built 13:41:16, Oct 21 2003
>
>
> Platform: Atmel AT91/EB40A (ARM7TDMI)
> Copyright (C) 2000, 2001, 2002, Red Hat, Inc.
>
>
> RAM: 0x00000000-0x00040000, [0x0001ff88-0x0003f000] available
> FLASH: 0x01000000 - 0x01200000, 32 blocks of 0x00010000 bytes each.
> RedBoot> load -m ymodem -b %{FREEMEMLO}
> CCCCCCCCC...........Can't load '<null>': Timed out
> RedBoot>
>
>
> // ================================ End of paste ===============
>
> I have to say i don't follow what this is doing, i assumed that i would
> need to specify the loactaion of the rom file
> /home/jbennie/ecos/rom/install/bin/redboot.srec but from the help for
> the AT91 this does not appear to be the case. I now assume that the ram
> image is dumped from memory into the flash using the next command
>
> e.g. RedBoot> fi wr -f 0x01100000 -b %{FREEMEMLO} -l 0x010000
>
> - I also noted that there are differences between my memory map and that
> published in the help
>
> http://sources.redhat.com/ecos/docs-latest/ref/at91.html
>
> Anyway, given that I'm new to all of this any help would be appreciated
> and if anyone has any specific advice on the eb40a I'd appreciate a
> quick email as i need to compile as much of this information into an
> eCos for the eb40a FAQ/mini-HOWTO, it will help the other people i'm
> working with get up to speed and hopefully be of some use to the
> community as well.
>
> Regards
> Jay
>
> ---------------------------------------
> lincore information systems limited
> mob:07976 300036
> eml:jay@lincore.com | jay@lincore.co.uk
> ---------------------------------------
>
>
>
>
>
>
>
> --
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss
>
--
NEU FÜR ALLE - GMX MediaCenter - für Fotos, Musik, Dateien...
Fotoalbum, File Sharing, MMS, Multimedia-Gruß, GMX FotoService
Jetzt kostenlos anmelden unter http://www.gmx.net
+++ GMX - die erste Adresse für Mail, Message, More! +++
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss