Re: [U-Boot] How to handle binary data file in u-boot

30 Jul 2010

      Hi Reinhard,
Thank you very much.
:)
Yours
Terry
...
-----Original Message-----
From: Reinhard Meyer [mailto:reinhard.meyer@emk-elektronik.de] 
Sent: 2010年7月29日 15:45
To: Lv Terry-R65388
Cc: u-boot@lists.denx.de
Subject: Re: [U-Boot] How to handle binary data file in u-boot
Lv Terry-R65388 wrote:
...
Hi Experts,
We have implemented an display utilty in u-boot and this utlity 

needs a waveform file.
We are planning to release this display utility, but we 

don't know
...
how to do with the waveform file. The file is as large as 800KB.
Files that large are usually not embedded within the u-boot image.
...
Now we just put the waveform file on mmc and read it 

out in boot.
...
It depends where your u-boot image is. If its in NOR flash, 
for example, one would add a partition of suitable size to 
put the data in.
If the external location can be flexibly defined (filename 
for SD/MMC or location for others) it is great.
...
Is there any better way to deliver this binary waveform file as 

part of the bootloader?
As part of the bootloader (image) you'd need to convert the 
bytestream into a lengthy initialized array and link it into 
the image. I'm not sure the toolchain can handle that and I 
am sure that method is not welcome in the repository (800kb 
binary --> several MB c-source)...
...
How is this case  typically handled?

Have a look at the code to handle FPGA images, you can 
probably even reuse or share code with there.
Reinhard