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Re: [Xen-users] Booting xen using uboot+efi on Rock64
- To: Julien Grall <julien.grall@xxxxxxx>, Todd Stellanova <todd@xxxxxxxxxxxxx>
- From: Andre Przywara <andre.przywara@xxxxxxx>
- Date: Fri, 25 May 2018 10:05:47 +0100
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- Cc: "AKASHI, Takahiro" <takahiro.akashi@xxxxxxxxxx>, Alexander Graf <agraf@xxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Fri, 25 May 2018 13:34:54 +0000
- List-id: Xen user discussion <xen-users.lists.xenproject.org>
- Openpgp: preference=signencrypt
Hi,
On 24/05/18 15:34, Julien Grall wrote:
> (+Andre)
>
> On 24/05/18 14:35, Todd Stellanova wrote:
>> Hello,
>
> Hi Todd,
>
> I have CCed Andre who has some knowledge about UEFI in U-boot.
>
>>
>> I'm trying to get Xen running on the Rock64 SBC (Rockchip RK3328).
>> The long details of my setup are here:
>> https://forum.pine64.org/showthread.php?tid=6059
>>
>> Basically I'm at a point where I am able to manually kick off efi boot
>> from a uboot command line and getting a couple of errors
>> (FDT_ERR_BADMAGIC and one that looks like it's coming from the EFI
>> loader)-- see the output from uboot below.
As you figured already, this error means that U-Boot didn't find a
specifically loaded dtb. In this case it will use the DT that U-Boot
itself uses. Last time I checked there were subtle incompatibilities
between the two. I started with patches fixing this, but this will take
some time.
So in the meantime I recommend using the .dtb from the latest mainline
kernel.
>> Any suggestions on what to try next? Thanks for any ideas.
>>
>> => set devtype mmc
>>
>> => set devnum 1
>>
>> => set distro_bootpart 6
>>
>> => run boot_efi_binary
>>
>> reading efi/boot/bootaa64.efi
>>
>> 885072 bytes read in 129 ms (6.5 MiB/s)
>>
>> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
>>
>> ## Starting EFI application at 02000000 ...
>>
>> Card did not respond to voltage select!
>>
>> mmc_init: -95, time 10
>>
>> Scanning disk rksdmmc@xxxxxxxxxxxx <mailto:rksdmmc@xxxxxxxxxxxx>...
>>
>> Scanning disk rksdmmc@xxxxxxxxxxxx <mailto:rksdmmc@xxxxxxxxxxxx>...
>>
>> Found 2 disks
>>
>> Xen 4.11-rc (c/s Tue May 1 09:03:13 2018 +0100 git:0306a1311d) EFI loader
>>
>> Couldn't obtain the File System Protocol Interface: ErrCode:
>> 0x8000000000000003
So this smells like a missing interface in U-Boot's EFI implementation.
CCing Akashi and Alex, who are working on extending this.
What version of U-Boot are you running? If possible, try to upgrade to
the latest version, as the EFI support is continually improving.
What should work already is grub, though. So you could take the detour
of loading grub as an EFI application from U-Boot, then loading Xen from
there. That should give you more comfort anyway.
Or you take the old road and load Xen directly from U-Boot. Check the
Espressobin instruction for a reference on this:
https://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions/ESPRESSObin
Cheers,
Andre.
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