[U-Boot-Users] Creating a valid bmp file

[Roger Williamson]

Currently I'm attempting to make my u-boot display a splash screen.
Currently, the display dirver is being uncooperative, so I decided to focus
my attention on creating a bitmap image that will be considered acceptable
to the u-boot system.

I've read through the brief descriptions about the bmp command and
transfering data into the flash, but I'm having some issue getting u-boot
to recognize my bitmaps. All I'm getting out of the system is that "There
is no valid bmp file at the given address." I know that the address I give
is the address of the bitmap in flash, and I am able to transfer new
bitmaps over to the flash, I am just perplexed on how to create a suitable
bitmap image. What am I missing.


Thank you,
Roger Williamson
Orbital TMS -- Colombia
CE Software Engineer
[phone]

Note: the disclaimer at the bottom is something that our outbound mail
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The intended audience of this e-mail is the public domain, therefore if you
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[Detlev Zundel]

Hi Roger,

Post by Roger Williamson
Currently I'm attempting to make my u-boot display a splash screen.
Currently, the display dirver is being uncooperative, so I decided to focus
my attention on creating a bitmap image that will be considered acceptable
to the u-boot system.
I've read through the brief descriptions about the bmp command and
transfering data into the flash, but I'm having some issue getting u-boot
to recognize my bitmaps. All I'm getting out of the system is that "There
is no valid bmp file at the given address." I know that the address I give
is the address of the bitmap in flash, and I am able to transfer new
bitmaps over to the flash, I am just perplexed on how to create a suitable
bitmap image. What am I missing.

I cannot say what you are missing, but you probably can check for
yourself. The first check the bitmap code does is to see whether it
can find 'B' and 'M' as the first two bytes of the image. That's the
magic number for bmp files[1].

Given the error message you get, you probably do not use the "Windows
Bitmap (BMP)" file format. Also be aware that currently only 1 or 8
bit per pixel formats are supported.

Cheers
Detlev

[1] http://en.wikipedia.org/wiki/Windows_bitmap

[Roger Williamson]

Hello again Detlev,

A small question before I get to the rest of my response: how much
has the bmp handling changed over the past 2 years?

Post by Detlev Zundel
Hi Roger,

Post by Roger Williamson
Currently I'm attempting to make my u-boot display a splash screen.
Currently, the display dirver is being uncooperative, so I decided to

focus

Post by Detlev Zundel

Post by Roger Williamson
my attention on creating a bitmap image that will be considered

acceptable

Post by Detlev Zundel

Post by Roger Williamson
to the u-boot system.
I've read through the brief descriptions about the bmp command and
transfering data into the flash, but I'm having some issue getting

u-boot

Post by Detlev Zundel

Post by Roger Williamson
to recognize my bitmaps. All I'm getting out of the system is that

"There

Post by Detlev Zundel

Post by Roger Williamson
is no valid bmp file at the given address." I know that the address I

give

Post by Detlev Zundel

Post by Roger Williamson
is the address of the bitmap in flash, and I am able to transfer new
bitmaps over to the flash, I am just perplexed on how to create a

suitable

Post by Detlev Zundel

Post by Roger Williamson
bitmap image. What am I missing.

I cannot say what you are missing, but you probably can check for
yourself. The first check the bitmap code does is to see whether it
can find 'B' and 'M' as the first two bytes of the image. That's the
magic number for bmp files[1].

All of the files I've tried do have the tel-tale "BM" as the first
two characters, I'm glad that I'm not totally off with respect to the files
that I've tried to load.

Post by Detlev Zundel
Given the error message you get, you probably do not use the "Windows
Bitmap (BMP)" file format. Also be aware that currently only 1 or 8
bit per pixel formats are supported.

Hmm... Do you or any of the U-booters know any programs for Windows,
or that'll run under cygwin that will produce OS independed bitmaps?

Post by Detlev Zundel
Cheers
Detlev
[1] http://en.wikipedia.org/wiki/Windows_bitmap

You've been quite helpful so far.

Thank you,
Roger.


NOTE: just disregard the legalese attached to this message, if you are
reading this... odds are you should be reading this.


-----------------------------------------
Notice: This e-mail is intended solely for use of the individual
or entity to which it is addressed and may contain information that
is proprietary, privileged and exempt from disclosure under
applicable law. If the reader is not the intended recipient or
agent responsible for delivering the message to the intended
recipient, you are hereby notified that any dissemination,
distribution or copying of this communication is strictly
prohibited. This communication may also contain data subject to
U.S. export laws. If so, that data subject to the International
Traffic in Arms Regulation cannot be disseminated, distributed or
copied to foreign nationals, residing in the U.S. or abroad, absent
the express prior approval of the U.S. Department of State. If
you have received this communication in error, please notify the
sender by reply e-mail and destroy the e-mail message and any
physical copies made of the communication. Thank you.

[Jerry Van Baren]

Post by Roger Williamson
Hello again Detlev,
A small question before I get to the rest of my response: how much
has the bmp handling changed over the past 2 years?

Post by Detlev Zundel
Hi Roger,

[snip]

Post by Roger Williamson

Post by Detlev Zundel
I cannot say what you are missing, but you probably can check for
yourself. The first check the bitmap code does is to see whether it
can find 'B' and 'M' as the first two bytes of the image. That's the
magic number for bmp files[1].

All of the files I've tried do have the tel-tale "BM" as the first
two characters, I'm glad that I'm not totally off with respect to the files
that I've tried to load.

Post by Detlev Zundel
Given the error message you get, you probably do not use the "Windows
Bitmap (BMP)" file format. Also be aware that currently only 1 or 8
bit per pixel formats are supported.

Hmm... Do you or any of the U-booters know any programs for Windows,
or that'll run under cygwin that will produce OS independed bitmaps?

You mean like Microsoft Paint? See Detlev's hint (above) about saving
in 1 bit per pixel (monochrome) or 8 bits per pixel (256 color) formats.

Post by Roger Williamson

Post by Detlev Zundel
Cheers
Detlev
[1] http://en.wikipedia.org/wiki/Windows_bitmap

You've been quite helpful so far.
Thank you,
Roger.
NOTE: just disregard the legalese attached to this message, if you are
reading this... odds are you should be reading this.

In the Hitchhiker's Guide to the Galaxy says that, when the revolution
comes, the lawyer wannabes that write email disclaimer drivel will be
the first to be lined up against the wall...

gvb

[Clemens Koller]

Post by Roger Williamson
Hmm... Do you or any of the U-booters know any programs for Windows,
or that'll run under cygwin that will produce OS independed bitmaps?

I don't really use bitmaps... But I would also perfer using The Gimp
for that purpose. Yes, that's breaking a fly on the wheel, but there
are some plugins available which dump the image as C code. And there
is also a PSPTex Plugin which I use to create my splash screens:

http://registry.gimp.org/plugin?id=7855

Regards,

Clemens Koller
__________________________________
R&D Imaging Devices
Anagramm GmbH
Rupert-Mayer-Stra?e 45/1
Linhof Werksgel?nde
D-81379 M?nchen
Tel.[phone]
Fax [phone]
http://www.anagramm-technology.com

[Wolfgang Denk]

Post by Roger Williamson
NOTE: just disregard the legalese attached to this message, if you are
reading this... odds are you should be reading this.

No, we cannot ignore this. By posting such a message to a mailing
list which gets internationally distributed without restrictions you
are violating your own company's regulations, and we are supposed to
report you for that to your managemen.

Please turn this off. If necessary, use a different mail account for
posting to mailing lists.

Best regards,

Wolfgang Denk

[Jerry Van Baren]

Post by Wolfgang Denk

Post by Roger Williamson
NOTE: just disregard the legalese attached to this message, if you are
reading this... odds are you should be reading this.

No, we cannot ignore this. By posting such a message to a mailing
list which gets internationally distributed without restrictions you
are violating your own company's regulations, and we are supposed to
report you for that to your managemen.
Please turn this off. If necessary, use a different mail account for
posting to mailing lists.
Best regards,
Wolfgang Denk

Dear Wolfgang,

While I agree with you in principle and believe that those disclaimers
are a bunch of worthless drivel (and I cannot see how they possibly
could be useful from a legal standpoint), I have to empathize with Roger.

In big companies those disclaimers are auto-attached to all email
(!!!inside!!! as well as outside). Not only that, but many companies
(my own included) block access to all of the common "free" email
services (gmail, yahoo, juno, etc.). The only alternative is to not
subscribe to the list at work, which would hurt information flow on the
u-boot list.

In my case, it is only an oversight by the IT department that this email
doesn't have a stupid pseudo-legal disclaimer on it - the mail handling
path I use bypasses the primary corporate Exchange servers. I would not
be surprised if this bypass goes away in a matter of months as a side
effect of our cutover of our IT resources to our new overlords.

By the way, the disclaimer drivel is very likely part of the Microsoft
conspiracy to allow self-important idiots to control vital company
resources - I suspect Exchange is involved in most, if not all, of the
disclaimer attachment crimes. Note that the people that control these
disclaimers are the same ones that habitually send 500KB-2.2MB Word
documents as attachments... said 500KB document containing *one page* of
actual text.

Best regards,
gvb

P.S. Years ago, when the stupid disclaimers became the rage and one was
implemented locally, I noticed that IT was smart enough to not put
second and third disclaimers on email replies (we've since lost even
that minimal level of intelligence). I experimented and found that they
implemented keyword matching to trigger the disclaimer or not. As a
result, I was able to put my own cut down version that was about half
the size of the original (and made twice as much sense ;-).
Unfortunately, eventually the IT department caught on, probably as a
result of bounces, and switched to a full match, making my subterfuge
ineffective. :-/