From: Jay Bennie <jay@lincore.co.uk>
To: ecos-discuss@sources.redhat.com
Subject: [ECOS] Loading the rom on an AT91EB40A
Date: Tue, 21 Oct 2003 13:35:00 -0000 [thread overview]
Message-ID: <1066743305.13667.35.camel@blade> (raw)
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
---------------------------------------
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next reply other threads:[~2003-10-21 13:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-21 13:35 Jay Bennie [this message]
2003-10-21 13:58 ` Artur Lipowski
2003-10-21 14:39 ` Roman Jordan
[not found] ` <20031021160727.A17571@frqwol30ux.frequentis.frq>
2003-10-21 14:47 ` Jay Bennie
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