[ECOS] about redboot3 -> about ecos

[Sergei Gavrikov]

On Wed, Feb 17, 2010 at 09:38:19PM +0900, Shu Higashiyama wrote:
> Thank you Mr.Sergei and All.
> 
> LPC2468 OEM Board /embeddedartists is used. 
> 
> >> There is install/tests directory. 
> >> Please teach the procedure afterwards. 
> >> 
> 
> >In two words: use RedBoot's command `load' to upload a test into
> >RAM and then use command `go' to run it.
> 
> RedBoot(tm) bootstrap and debug environment [ROM]
> Non-certified release, version v3_0 - built 21:14:28, Feb 15 2010
> 
> Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
> Free Software Foundation, Inc.
> RedBoot is free software, covered by the eCos license, derived from the
> GNU General Public License. You are welcome to change it and/or distribute
> copies of it under certain conditions. Under the license terms, RedBoot's
> source code and full license terms must have been made available to you.
> Redboot comes with ABSOLUTELY NO WARRANTY.
> 
> Platform: Embedded Artists LPC2468 OEM Board (ARM7TDMI-S)
> RAM: 0xa0000000-0xa2000000 [0xa0005448-0xa2000000 available]
> RedBoot> load -m xmodem a.out -b 0xa0100000
> RedBoot> C
> RedBoot> go
> Hello, eCos world!
> 
> Thank you!
> $ arm-eabi-gcc -g -Itmp/kernel/install/include/ -L/tmp/kernel/install/lib/ -Tta
> rget.ld -nostdlib hello.c
> 
> "load","go" and
> http://www.wikihouse.com/oikawa1/index.php?eCos%20on%20CAT709
> in Japan web site.

Look nice, but I do not know Japanese :-)

> Thank you!
> Gdb is necessary for Ecos porting. 
> 
> (gdb) target remote /dev/ttyS2
> Remote debugging using /dev/ttyS2
> 0x00002e8c in ?? ()
> (gdb) load
> Loading section .rom_vectors, size 0x40 lma 0xa0100000
> Loading section .text, size 0xd084 lma 0xa0100040
> Loading section .rodata, size 0x344 lma 0xa010d0c4
> Loading section .data, size 0x320 lma 0xa010d408
> Start address 0xa0100040, load size 55080
> Transfer rate: 2 KB/sec, 300 bytes/write.
> (gdb) continue
> Continuing.
> Hello, eCos world!
> 
> Thank you!! Hello.c move with GDB and Redboot.

Congratulation! You have great progress.

> However, the porting of ecos doesn't end.

In the most this (eCos HAL for your target) is done! Uwe Kindler
worked on that.

    % find $ECOS_REPOSITORY -type d -name ea2468

Many eCos guys worked on the LPC variant HAL(s) and drivers

    % find $ECOS_REPOSITORY -type d -name lpc2?xx

A lot of people were/are working on eCos in the years and just now.

> Where is Ecos Kernel file?
> [ie] Zimage

There is not loadable kernel image. eCos != Linux. What you (will) get
that is (will be)

  install/lib/*.a
  install/include/*

Like you've get that hello (a.out) executable, you can build something
more suitable for you. Just write in C. The eCos stands for (embedded
*Configurable* operating system). Any eCos executable is built with
default template already contains the eCos kernel itself.

> >But, Shu, it is not possible to copy the quotes from the eCos docs and
> >paste those parts here. Please, start to read eCos documentation:
> 
> >http://ecos.sourceware.org/docs.html
> >http://ecos.sourceware.org/docs-latest/
> 
> >What do you need that is to read first 1) eCos user guide; 2) RedBoot
> >user guide and 3) eCos reference. And I expect that you find the most of
> >the answers from there.
 
[drop some points on GDB]

> >Your Internet search engine is your friend too.
> 
> >I hope that helps...
 
> Please continue your favors toward continuation. 
> 
> I am sorry my best regards in a rudimentary question because it is a
> beginner. 

Try to build and run eCos examples ($ECOS_REPOSITORY/../examples), the
eCos tests then and may be before. Learn eCos.


Sergei
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