Hello,
I kindly want to inquire about the following:
- The serial console for UART host based debugging is initialized and
prepared by u-boot, is it necessary for the kernel (or any other baremetal
code) to reinitialize the UART? what minimum code needs to be added to the
software layer (that u-
OK, my best thanks for your great answer.
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Dear
Many thanks for your reply.
But what if mistakenly or accidentally the standalone application write to
the memory where u-boot resides, would that cause the standalone application
to crash? Otherwise (in case the standalone application has written to
u-boot memory without crash ) what happ
Dear all,
At the moment U-Boot branches to the OS entry point, U-Boot is dead and no
longer exists, does this property hold also when u-boot loads a standalone
application.
In fact, I want to 'give control' to a standalone application, what does
exactly the word 'give control' mean? e.g. 'givi
Undoubtedly u-boot is very powerful and feature-rich bootloader. However,
does it have any limitation? In other words what features if included to
u-boot current functionality would result in a better efficiency in terms of
performance, power,security,portability, boot-time, or any other criteria.
Great, thank you very much for this valuable information.
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Great, many thanks for this information.
On the other hand, according to my basic understanding (Please correct me
if I am wrong), U-boot can pass through the bootargs env variable
information about available memory in the platform. For instance, bootargs
mem=512M@0xA000 .. instructs the ke
Hello,
I want to execute a an OS (either Linux or Android) on the Arndale exynos
5250 board. The board features 2 GB of RAM. However, I want to statically
alloacate a specifc region of RAM (e.g. 1 GB) to be used by the OS, While
the other 1 GB is reserved for other purposes.
What is the best wa
Hi,
I am using the u-boot-arndale from
https://github.com/virtualopensystems/u-boot-arndale and I am using the
arm-linux-gnueabi- Linaro toolchain for compilation? I also tried
u-boot-linaro-2013.03.01 but the issue persist? any suggestion please?
Many thanks.
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Thanks Wolfgang,
I will do and post the result.
Many thanks.
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Dear Wolfgang,
Thank you very much.
As per your request,
I executed the following mkimage command:
mkimage -A arm -O u-boot -T standalone -C none -a 0x0c10 -e 0x0c10
-n "Hello World" -d hello_world.bin Hello.img
Than, I transferred to the board using uboot loadb (followed by the k
Dear wolfagang,
Again thank you very much.
Please note :
I used the following command :
mkimage -A arm -O u-boot -T standalone -C none -a c100 -e c100 -n
"Hello World" -d hello_world.bin Hello.img
I transfred the image file to (using loadb 0x43e0), the md command
shows the f
Dear Marek,
Best thanks for your reply.
Please note that I am graduate student part of my thesis involves the
development of standalone bare-metal hardware aided mini-hypervisor (on the
arndale exynos 5250) featuring resiliency to critical info leakage (e.g.
micor-architectural leakage etc..).
Dear Wolfang,
Dear Wolfang,
Thank you very much for the time your are investing replying to my messages.
Here is the command I am using to make the image :
mkimage -A arm -O u-boot -T standalone -C none -a c100 -e 0c10 -n
"Hello World" -d hello_world.bin HelloWorld.img
Please note th
Dear Wolfgang,
Thank you very much for pointing out the issue of address conflict.
I tried loading the standalone app considering your remarks, however, the
app hangs at the following after a bootm command :
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Is it possible to load a bare-metal standalone application by using uboot,
and let the standalone app load a kernel and FS, could you please propose a
hint on how to it?
Many thanks.
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Hi,
I am trying to load and execute the hello world standalone app on the
arndale exynos 5250. I created an image using the mkimage tool and then used
the bootm to load and execute the image. However, the applications does not
print anything on the terminal and all what I can see is the following
Hello,
is it possible to export some Uboot command line functions (e.g. bootm) to a
standalone app, in such shall my app be GPLed.
Many thanks.
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Dear all,
I am thinking of getting the Uboot to load a VMM (in hyp mode) rather than a
standard kernel, is it a good (and feasible) idea to set the VMM as a
standalone application which runs in hyp mode, and then the VMM uncompress
and load a kernel image to be executed in SVC mode, is there a bet
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