On 2016-08-23 11:40, Daniel Golle wrote:
On Tue, Aug 23, 2016 at 11:10:11AM +0200, Kenneth Johansson wrote:
On 2016-08-23 07:31, Daniel Golle wrote:
even this do not currently work. there is no UBI support of any kind for
mt7621 and adding it was what I was asking about.
There are already devices using UBI on MT7621, just no method to flash
UBI using the 'factory'/stock method due to lacking UBI support in
the vendor-supplied U-Boot. UBI support is enabled on targets by
setting the 'nand' feature, see target/linux/ramips/mt7621/target.mk
You may also have a look at
So I did a fresh clone. configured for mt7621. added this patch to be able
to select ubi image generation.
You will need to add 'ubifs' to target/linux/ramips/mt7621/target.mk
rather than target/linux/ramips/Makefile.
You also need to specify the device-specific parameters which are
passed to mkfs.ubifs, e.g. something like
UBIFS_OPTS = -m 2048 -e 124KiB -c 4096
Making a mystery out of what you are trying to achieve doesn't help.
Especially not if I got the subtle feeling that you are trying to do
it in a very wrong way -- in the end, you are paid to build some
firmware for a device we'll later on have to live with and cope with
your image-building hacks. I know, uniqueness and originality are high
values in contemporary society. However, nobody is going to appreciate
very unique firmware image formats (unless you are selling security by
obscurity).
hmm ???
Especially, please have a look at how it works for the
many other devices which use NAND flash and thus UBI(FS). It's really
not that different from what you want to do, I guess (but don't know,
because you are not telling anyone what you are trying to do).
well I thought I said exactly what I wanted. I want a ubifs image. not a
ubi image so ubinizer is not to be run on it.
I want the kernel uImage in /boot and I want the DTB in/boot.
that is all. there is no magic strange format its just a filesystem in a
ubifs image.
So please have a look at ipq806x, lantiq and oxnas image building and
sysupgrade script, all you are looking for can be found there.
But the issue is that I want to modify the mt7621. it feels like it
should be really easy thing to do. And looking on other board is
obviously the first thing I did. Still I have not managed to figure out
what variable to set or what function to override.
But I can always just nuke the entire thing and make a complete new
target. then I do not have to adopt anything to how it works right now.
It's shame the build system is so abstracted that its no longer possible
to understand.
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