Re: [ECOS] How do I restore WinCE image?

["Wong Yee Peng" <wyeepeng at dso dot org dot sg>]

Hi,
    I did not save a CF backup of the wince image. however, I did backup the
4 4MB images thru the osloader. So, I tried using the 2nd method u told me.
however, I couldn't complete step 1 as redboot complains that it is an
invalid image type. By the way, I think in step 1, you meant "load
redboot_RAM.bin" instead of "load RedBoot.RAM" as there isn't such a bin
file.

    Anyway, here is a dump of the FIS structure to help you understand my
situation.

Name                       flash addr        mem addr         length
entry point
(reserved)                0x50000000    0x50000000    0x00040000
0x00000000
RedBoot                  0x50040000    0x50040000    0x00040000
0x00000000
RedBoot Config       0x50F80000    0x50F80000   0x00040000    0x00000000
FIS dir                     0x50FC0000   0x50FC0000   0x00040000
0x00000000
Linux                       0x50080000    0x00100000    0x00080000
0x00000000
JFFS2                     ....... (still downloading currently.)

As you can see, the table looks very different from the one on
http://sources.redhat.com/redboot/ipaq.
The Linux partition is before JFFS2 partition becos I loaded and flashed the
kernel bef the root image. I believe there should not be any problem with
that. Note that all the entry points are 0x00000000. Also the (reserved)
partition cannot be removed. I think it is the parrot loader. But why
doesn't the web site reflect that? Did they totally removed the parrot
loader?

Are the entry points very important? If so, how do I "repair" or set their
values without deleting the partition and creating a clean one?

I believe that is a mistake in http://sources.redhat.com/redboot/ipaq under
the section about running the embedded linux demo.

It says:
<<<<<<>>>>>>
The Embedded Linux demo can be run using the commands:

RedBoot> fi loa -d Linux
RedBoot> ex -b 0x100000 -l 0x280000 -c "noinitrd root=/dev/mtdblock/3
init=/linuxrc console=ttySA0,38400"


The demo can be set up to run automatically at boot/reset time:

RedBoot> fc
Run script at boot: false t
Enter script, terminate with empty line
>> fi loa -d eCos_demo
>> go -w 5 0x20040
>> fi loa -d Linux
>> ex -b 0x100000 -l 0x280000 -c "noinitrd root=/dev/mtdblock/3
init=/linuxrc console=ttySA0,38400" -w 5

<<<<<<>>>>>>
Shouldn't the length of the kernel image be 0x80000 instead of 0x280000?
Will this post a serious problem since the extra memory at the end might
override some restricted system areas?

Regards
Yee Peng


----- Original Message -----
From: "Gary Thomas" <gthomas@redhat.com>
To: "Wong Yee Peng" <wyeepeng@dso.org.sg>
Cc: <ecos-discuss@sourceware.cygnus.com>
Sent: Thursday, August 16, 2001 9:30 PM
Subject: RE: [ECOS] How do I restore WinCE image?


>
> On 16-Aug-2001 Wong Yee Peng wrote:
> > Hi,
> >     I managed to permanently install redboot on my ipaq. Then, I
> > successfully install the embedded linux kernel and root fs onto the ipaq
and
> > got it running once. However, later I think I messed up the fis (most
> > probably becos of "fis init" twice while testing with the redboot boot
> > script). Now, I cannot startup the embedded linux.
>
> You should be able to restore your Linux environment, without reinstalling
> RedBoot.  Exactly what problems are you having?  Note: this is much
preferred
> to restoring WinCE as there is a chance that the unit may become
[temporarily]
> unusable if that operation fails.
>
> >     So, I wanted to restore my CE and reinstall redboot again. However,
the
> > user guide tells me to refer to the doc in the handhelds.org which does
not
> > apply to the redboot situation. Can anyone tell me how to restore CE
from
> > Redboot or the parrot loader?
>
> Did you make a CF backup using the Parrot loader, prior to installing
RedBoot?
> If so, just insert the CF card, press reset (or power cycle) while holding
> down the "action" button (the joy pad middle button).  This will bring up
> the CF restore menu which is quite automatic.
>
> If not, did you make copies of your FLASH by following the HandHelds
instructions?
> In this case, you'll have 4 data files.  You can load these using the
RedBoot
> 'load' command, either over the serial using Xmodem or via the Ethernet
and TFTP.
> The basic flow is:
>   1. Load & execute RAM version of RedBoot.
>        RedBoot> load RedBoot.RAM
>        RedBoot> go
>   2. Now load the FLASH contents.
>        RedBoot> load -r -b 0x00100000 flash_00000000.bin
>        RedBoot> load -r -b 0x00500000 flash_00400000.bin
>        RedBoot> load -r -b 0x00900000 flash_00800000.bin
>        RedBoot> load -r -b 0x00D00000 flash_00c00000.bin
>   3. Now the scary part - rewriting the FLASH.
>        RedBoot> fis unl -f 0x50000000 -l 0x01000000
>        RedBoot> fis wr -f 0x50000000 -l 0x01000000 -b 0x00100000
>        RedBoot> reset
>
> Notice: as indicated in the "how to install RedBoot" instructions, we
really only
> support the first method, i.e. using the Parrot loader.  This second
method will
> work *IF YOU FOLLOW THE DIRECTIONS*, but Red Hat cannot be responsible if
there
> are any problems.
>