[OpenWrt-Devel] [PATCH] ramips: mt7621: use lzma-loader for D-Link DIR-860L B1

[Szabolcs Hubai]

Hi again!

Szabolcs Hubai <szab.hu at gmail.com> ezt írta (időpont: 2020. ápr. 26., V, 16:43):
>
> Hi David!
>
> David Bauer <mail at david-bauer.net> ezt írta (időpont: 2020. ápr. 26., V, 14:42):
> >
> > Hi Szabolcs,
> >
> > On 4/19/20 8:49 PM, Szabolcs Hubai wrote:
> > > -  KERNEL := kernel-bin | append-dtb | relocate-kernel | lzma | uImage lzma
> > > +  LOADER_TYPE := bin
> > > +  KERNEL := kernel-bin | append-dtb | lzma | loader-kernel | \
> > > +  relocate-kernel | lzma -a0 | uImage lzma
> >
> > Sorry for going over this one more time. Is there a specific reason
> > to pack the resulting uImage using lzma? Also the lzma-loader relocates
> > itself afaik, so relocate-kernel shouldn't be necessary when using our
> > own loader (i might be wrong here).
> >
> > Could you try the attached patch on your device?
> >
>
> No problem at all, as it's still not landed. :)
> Meanwhile I started playing with that loader-okli what Guo was referring.
> Looks like it needs more magic. :D
>
>
> I tried your proposed path when the recipe hit master, without lack. [0]
> Will try again for you.
>

Forgot to mention that Guo also noted his original thread [0] that
DIR-860L is an exception.


[0] http://lists.infradead.org/pipermail/openwrt-devel/2020-April/022834.html

BR,
Szabolcs


> About the lzma repack: I found out that the U-Boot accepts
> uncompressed and lzma compressed initramfs images.
> It doesn't accepts gzip initramfs, but I didn't tested other compressions.
> I also found that the U-Boot expects lzma compressed kernel images
> from the flash and doesn't care about uImage header.
>
> About relocate-kernel: without it the router hangs after "transferring
> control to Linux", like below!
>
>
> Please choose the operation:
>    1: Load system code to SDRAM via TFTP.
>    2: Load system code then write to Flash via TFTP.
>    3: Boot system code via Flash (default).
>    4: Entr boot command line interface.
>    7: Load Boot Loader code then write to Flash via Serial.
>    9: Load Boot Loader code then write to Flash via TFTP.
>  0
>
> 3: System Boot system code via Flash.
> ## Booting image at bfc50000 ...
> addr:80500000
> We have SEAMA, Image Size = 4759794
> Verifying Checksum ...
> Uncompressing SEAMA linux.lzma ... OK
> ## Transferring control to Linux (at address 00000000) ...
> ## Giving linux memsize in MB, 128
>
> Starting kernel ...
>
> (hang)
>
>
>
> [0] https://forum.openwrt.org/t/optimized-build-for-the-d-link-dir-860l/948/1089?u=xabolcs
>
>
> Regards,
> Szabolcs
>
> > Best wishes
> > David

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