Have you tried experimenting with console and earlyprintk kernel command
line arguments? The kernel may be running but is not printing on your
tty/serial console.
2014-12-17 18:59 GMT+01:00 Ralph Campbell <ralph.campbell@xxxxxxxxxxxx>:
Yes, the EFI boot code comes from Linaro and is based on Tianocore and has support for DTBs.
I can TFTP boot with the Linaro kernel, DTB, and initrd.
I can TFTP boot grubaa64.efi from Fedora-Server-DVD-aarch64-21.iso mounted on the server and grub displays the install menu options.
When I select any of those options, I see vmlinuz being TFTP loaded, "EFI stub: Booting Linux Kernel...", and then nothing.
I tried TFTP booting vmlinuz directly (compressed and uncompressed), bypassing grub, and specifying the initrd.img and DTB but that fails too.
Maybe I need to pass some arguments to grub or change the grub.config somehow.
I'm not sure how the DTB is loaded via grub/vmlinuz.
-----Original Message-----
From: Peter Robinson [mailto:pbrobinson@xxxxxxxxx]
Sent: Monday, December 15, 2014 11:58 PM
To: Ralph Campbell
Cc: arm@xxxxxxxxxxxxxxxxxxxxxxx
Subject: Re: Anyone install F21 on ARM juno board?
On Fri, Dec 12, 2014 at 6:05 PM, Ralph Campbell <ralph.campbell@xxxxxxxxxxxx> wrote:
> I’m trying to install F21 aarch64 on an ARM juno development board.
>
>
>
> I have been able to compile and install the Linaro kernel and UEFI
> boot code OK and TFTP boot the kernel with a USB rootfs image
> following the instructions from
> http://releases.linaro.org/latest/members/arm/openembedded/juno-lsk.
>
>
>
> Some of the problems I’m hitting are due to the fact that the current
> kernel source has a bug preventing 2 USB flash drives from being used
> at the same time and that there doesn’t seem to be support in UEFI for
> USB DVD ROM drives or ISO9660 filesystems.
>
> I can TFTP boot the EFI/BOOT/grubaa64.efi from the
> Fedora-Server-DVD-aarch64-21.iso image but I’m not sure how to modify
> grub.cfg to TFTP boot vmlinuz and initrd.img.
>
>
>
> If anyone has been through this process and succeeded, I would much
> appreciate the information.
I'm not familiar with uEFI, or u-boot for that matter, on the Juno platform as I don't have access to the device. I believe currently even with uEFI you need device tree support which for Juno has only just landed in 3.19
Is the uEFI implementation for Juno based on the reference Tianocore
(sp?) implementation?
Peter
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Pavel Holica
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