[Bug 1508893] Re: TFTP timeout on ARM64 hw when booting from grub that was PXE loaded

[Ming Lei]

On Tue, Nov 3, 2015 at 11:48 PM, Newell Jensen
<newell.jensen at canonical.com> wrote:
> Ming,
>
> Trying to use your bootnetaa64.efi file from
> http://kernel.ubuntu.com/~ming/bugs/1508893/bootnetaa64.efi
>
> I am not able to test this because I cannot PXE boot:
>
> TianoCore 2.0.0 UEFI 2.4.0 Sep  1 2015 12:48:07
> CPU: APM ARM 64-bit Strega Rev A2 2400MHz PCP 2400MHz
>      32 KB ICACHE, 32 KB DCACHE
>      SOC 2000MHz IOBAXI 400MHz AXI 250MHz AHB 200MHz GFC 66MHz
> Board: X-Gene Merlin Board
> Slimpro FW:
>         Ver: 3.4 (build 2015/07/22)
>         PMD: 980 mV
>         SOC: 950 mV
> The default boot selection will start in   3 seconds
> [1] ubuntu
> [2] PXE on MAC :3C
> [3] nfs boot via TFTP
> [4] Shell
> [5] Boot Manager
> [6] Reboot
> [7] Shutdown
> Start: 2
> ..PXE-E23: Client received TFTP error from server.
> [1] ubuntu
> [2] PXE on MAC :3C
> [3] nfs boot via TFTP
> [4] Shell
> [5] Boot Manager
> [6] Reboot
> [7] Shutdown
> Start: 2
> ..PXE-E23: Client received TFTP error from server.
> [1] ubuntu
> [2] PXE on MAC :3C
> [3] nfs boot via TFTP
> [4] Shell
> [5] Boot Manager
> [6] Reboot
> [7] Shutdown
> Start:

I can't see the failure, and looks it is fine for me today, see following log:
TianoCore 2.0.0 UEFI 2.4.0 Sep  1 2015 12:48:07
CPU: APM ARM 64-bit Strega Rev A2 2400MHz PCP 2400MHz
     32 KB ICACHE, 32 KB DCACHE
     SOC 2000MHz IOBAXI 400MHz AXI 250MHz AHB 200MHz GFC 66MHz
Board: X-Gene Merlin Board
Slimpro FW:
    Ver: 3.4 (build 2015/07/22)
    PMD: 980 mV
    SOC: 950 mV
The default boot selection will start in   3 seconds
[1] ubuntu
[2] PXE on MAC :3C
[3] nfs boot via TFTP
[4] Shell
[5] Boot Manager
[6] Reboot
[7] Shutdown
Start: 2
..

then follows grub menu.

If you are online a bit early tomorrow, I can test it with you together.

Thanks,




>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1508893
>
> Title:
>   TFTP timeout on ARM64 hw when booting from grub that was  PXE loaded
>
> Status in grub2 package in Ubuntu:
>   New
>
> Bug description:
>   This issue was discovered  with Ubuntu Wily (15.10) on a currently in
>   development ARM64 HW.
>
>   When loading kernel via tftp in grub on this hardware, the system
>   stops receiving new packets (times out )  after receiving initial few
>   tens of tftp data packets , which then causes kernel load failure.
>
>   Running tcpdump before loading kernel in grub menu shows timeouts
>   occurring,  as captured in the below log  :
>
>         http://kernel.ubuntu.com/~ming/grub/apm.tcpdump
>
>   Following are the  detailed reproduction steps :
>
>   1) setup PXE boot entry in UEFI(no any parameter to grub)
>   2) build one grub from upstream (and/or Wily)  and put it in PXE&TFTP server
>   3) setup grub config, suppose the shape is like below:
>        menuentry 'Install for arm64' {
>             linux /ubuntu-installer/arm64/Image --- console=ttyS0,115200
>             initrd /ubuntu-installer/arm64/initrd.gz
>       }
>   4) start PXE booting in UEFI
>   5) grub prompt is coming
>   6) select 'Install for arm64' menu item and press 'enter' to start
>   loading kernel
>   7) then hangs inside loading kernel
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1508893/+subscriptions

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2 in Ubuntu.
https://bugs.launchpad.net/bugs/1508893

Title:
  TFTP timeout on ARM64 hw when booting from grub that was  PXE loaded

Status in grub2 package in Ubuntu:
  New

Bug description:
  This issue was discovered  with Ubuntu Wily (15.10) on a currently in
  development ARM64 HW.

  When loading kernel via tftp in grub on this hardware, the system
  stops receiving new packets (times out )  after receiving initial few
  tens of tftp data packets , which then causes kernel load failure.

  Running tcpdump before loading kernel in grub menu shows timeouts
  occurring,  as captured in the below log  :

        http://kernel.ubuntu.com/~ming/grub/apm.tcpdump

  Following are the  detailed reproduction steps :

  1) setup PXE boot entry in UEFI(no any parameter to grub)
  2) build one grub from upstream (and/or Wily)  and put it in PXE&TFTP server
  3) setup grub config, suppose the shape is like below:
       menuentry 'Install for arm64' {
            linux /ubuntu-installer/arm64/Image --- console=ttyS0,115200
            initrd /ubuntu-installer/arm64/initrd.gz
      }
  4) start PXE booting in UEFI
  5) grub prompt is coming
  6) select 'Install for arm64' menu item and press 'enter' to start
  loading kernel
  7) then hangs inside loading kernel

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1508893/+subscriptions