With grub.cfg Linux Kernel boot hangs

With grub.cfg Linux Kernel boot hangs

[Naresh Bhat]

Hi All,

I am able to boot my machine with linux kernel 2.6.32.28 from EFI
shell after following the instructions
http://grub.enbug.org/TestingOnMacbook

Plug-in the USB stick on EFI firmware/Shell supported x86 32bit target
board. Edit the BIOS and change the boot priority to EFI shell. After
target is booted on EFI shell execute the below commands

Shell> fs1:
fs1:\> cd efi
fs1:\efi> cd grub
fs1:\efi\grub> grub.efi


grub> set debug=video
grub> insmod efi_gop
grub> boot

But when I created a grub.cfg file and try to boot, my machine will show

"video/efi_gop:357: GOP: Sucess"

and hangs......


Any idea what is wrong with grub.cfg file or with my USB disk partitions ?

My grub.cfg file contents are as below

============================================
set debug=video
insmod efi_gop

menuentry "Linux Kernel-2.6.32.28 (Single Image)" {
	linux (hd2,gpt2)/bzImage
}

menuentry "Linux-2.6.32.28 Kernel with custom ramdisk image" {
	linux (hd2,gpt2)/bzImage
	initrd (hd2,gpt2)/ramdisk.img
}
===============================================================================

My USB disk partitions are as below
================================================================================
Lenovo-Y310 nareshbhat # parted /dev/sdb
GNU Parted 2.3
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Model: Kingston DataTraveler G2 (scsi)
Disk /dev/sdb: 2000MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size   File system     Name  Flags
 1      1049kB  744MB   743MB  fat32
 2      744MB   1585MB  841MB  ext2
 3      1585MB  1999MB  413MB  linux-swap(v1)

(parted)
==================================================================================

Thanks in Advance!!

-Naresh Bhat

Re: With grub.cfg Linux Kernel boot hangs

[Vladimir 'φ-coder/phcoder' Serbinenko]

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On 06.04.2011 09:38, Naresh Bhat wrote:
> grub> set debug=video

> grub> insmod efi_gop
>grub> boot
There are obviously some more commands here. Which ones?

> set debug=video
debug messages can sometimes confuse the EFI console. Have you tried w/o
them?
> insmod efi_gop
>
> menuentry "Linux Kernel-2.6.32.28 (Single Image)" {
> 	linux (hd2,gpt2)/bzImage
Have you tried with "noefi"
> }


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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Re: With grub.cfg Linux Kernel boot hangs

[Naresh Bhat]

Hi Vladimir,

Thank you very much for the reply.

Yes, I have tried without "set debug=video" which resulted displaying
nothing on the screen (blank screen).

I have even tried with noefi option as below. The "Linux
Kernel-2.6.32.28 (Single Image)" is hangs the system. But second
menuentry  "Linux-2.6.32.28 Kernel with custom ramdisk image" is
booted.

Is there any restriction by considering the ramdisk image size or
kernel image size ? My Image sizes are as below

-rw-r--r-- 1 root root 161694112 2011-04-05 13:28 bzImage-2.6.32
-rw-r--r-- 1 root root   4373376 2011-04-05 18:02 bzImage
-rw-r--r-- 1 root root  20971520 2011-04-05 18:00 ramdisk.img


==========================================================
set debug=video
insmod efi_gop

menuentry "Linux Kernel-2.6.32.28 (Single Image)" {
       linux (hd2,gpt2)/bzImage-2.6.32 noefi
}

menuentry "Linux-2.6.32.28 Kernel with custom ramdisk image" {
       linux (hd2,gpt2)/bzImage
       initrd (hd2,gpt2)/ramdisk.img
}
===========================================================

Thanks
-Naresh Bhat


2011/4/6 Vladimir 'φ-coder/phcoder' Serbinenko <phcoder@gmail.com>:
> On 06.04.2011 09:38, Naresh Bhat wrote:
>> grub> set debug=video
>
>> grub> insmod efi_gop
>>grub> boot
> There are obviously some more commands here. Which ones?
>
>> set debug=video
> debug messages can sometimes confuse the EFI console. Have you tried w/o
> them?
>> insmod efi_gop
>>
>> menuentry "Linux Kernel-2.6.32.28 (Single Image)" {
>>       linux (hd2,gpt2)/bzImage
> Have you tried with "noefi"
>> }
>
>
> --
> Regards
> Vladimir 'φ-coder/phcoder' Serbinenko
>
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>

Re: With grub.cfg Linux Kernel boot hangs

[Vladimir 'φ-coder/phcoder' Serbinenko]

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On 06.04.2011 11:39, Naresh Bhat wrote:
> I have even tried with noefi option as below. The "Linux
> Kernel-2.6.32.28 (Single Image)" is hangs the system. But second
> menuentry  "Linux-2.6.32.28 Kernel with custom ramdisk image" is
> booted.
with or without noefi?
Your issue may be the one discussed in parallel thread "Grub2 EFI: Image
loading from USB takes too long"

-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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Re: With grub.cfg Linux Kernel boot hangs

[Naresh Bhat]

Hi Vladimir

The second menu entry is booted without providing noefi

==========================My Second Menuentry=====================
menuentry "Linux-2.6.32.28 Kernel with custom ramdisk image" {
      linux (hd2,gpt2)/bzImage
      initrd (hd2,gpt2)/ramdisk.img
}
===============================================================

The above menuentry is booting without any issues.

But, the first menu entry is booting without any issues  If and only
if, I load the kernel manually and execute boot command as below

Shell> fs1:
fs1:\> cd efi
fs1:\efi> cd grub
fs1:\efi\grub> grub.efi

grub> set debug=video
grub> insmod efi_gop
grub> linux (hd2,gpt2)/bzImage-2.6.32.28
<----------------- ( bzImage + ramdisk.img - Combined image)
grub> boot

Now, My problem is that When I create a menu entry for the above
manual commands I can see the following message on the screen and
system will hangs...The menu entry I have created as below

=========================My First Menuentry===================================
set debug=video
insmod efi_gop

menuentry "Linux Kernel-2.6.32.28 (Single Image)" {
       linux (hd2,gpt2)/bzImage-2.6.32
}
==========================================================================

Now my questions are
1. Is there any size limitations for Kernel Image which is loaded from
EFI shell ?
2. Is there any size limitations for ramdisk Image which is loaded
from EFI shell ?

-- Naresh Bhat
"For things to change, we must change"

2011/4/6 Vladimir 'φ-coder/phcoder' Serbinenko <phcoder@gmail.com>:
> On 06.04.2011 11:39, Naresh Bhat wrote:
>> I have even tried with noefi option as below. The "Linux
>> Kernel-2.6.32.28 (Single Image)" is hangs the system. But second
>> menuentry  "Linux-2.6.32.28 Kernel with custom ramdisk image" is
>> booted.
> with or without noefi?
> Your issue may be the one discussed in parallel thread "Grub2 EFI: Image
> loading from USB takes too long"
>
> --
> Regards
> Vladimir 'φ-coder/phcoder' Serbinenko
>
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>

Re: With grub.cfg Linux Kernel boot hangs

[Vladimir 'φ-coder/phcoder' Serbinenko]

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> Now, My problem is that When I create a menu entry for the above
> manual commands I can see the following message on the screen and
> system will hangs...The menu entry I have created as below
>
Is it latest bzr?
Can you try with debug=relocator and compare the outputs?
> Now my questions are
> 1. Is there any size limitations for Kernel Image which is loaded from
> EFI shell ?
> 2. Is there any size limitations for ramdisk Image which is loaded
> from EFI shell ?
>
GRUB is limited only by memory map and allocations already done by other
subsystems. Linux itself might have further limits.

-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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Re: With grub.cfg Linux Kernel boot hangs

[Naresh Bhat]

Hi Vladimir,

1. I have downloaded GRUB from ftp://alpha.gnu.org/gnu/grub/
2. No luck with debug=relocator option. Same thing is repeated.

When a kernel can boot with the following manual commands

grub> set debug=video
grub> insmod efi_gop
grub> linux (hd2,gpt2)/bzImage-2.6.32.28
grub> boot

Same set of commands if I put inside the grub.cfg file and try to
boot..the output is blank screen and hangs the machine!!!!

=========================================
set debug=video
insmod efi_gop

menuentry "Linux Kernel-2.6.32.28 (Single Image)" {
      linux (hd2,gpt2)/bzImage-2.6.32
}
==========================================

There must be something wrong with my grub.cfg file ???


Thanks
-Naresh Bhat


2011/4/6 Vladimir 'φ-coder/phcoder' Serbinenko <phcoder@gmail.com>:
>
>> Now, My problem is that When I create a menu entry for the above
>> manual commands I can see the following message on the screen and
>> system will hangs...The menu entry I have created as below
>>
> Is it latest bzr?
> Can you try with debug=relocator and compare the outputs?
>> Now my questions are
>> 1. Is there any size limitations for Kernel Image which is loaded from
>> EFI shell ?
>> 2. Is there any size limitations for ramdisk Image which is loaded
>> from EFI shell ?
>>
> GRUB is limited only by memory map and allocations already done by other
> subsystems. Linux itself might have further limits.
>
> --
> Regards
> Vladimir 'φ-coder/phcoder' Serbinenko
>
>
>



-- 
"For things to change, we must change"
-Naresh Bhat

Re: With grub.cfg Linux Kernel boot hangs

[Vladimir 'φ-coder/phcoder' Serbinenko]

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On 07.04.2011 13:13, Naresh Bhat wrote:
> Hi Vladimir,
>
> 1. I have downloaded GRUB from ftp://alpha.gnu.org/gnu/grub/
> 2. No luck with debug=relocator option. Same thing is repeated.
>
Could you try latest bzr? I've fixed a bug since the 1.99~rc1 which
could result in symptoms like yours.

>
>


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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Re: With grub.cfg Linux Kernel boot hangs

[Vladimir 'φ-coder/phcoder' Serbinenko]

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On 07.04.2011 13:13, Naresh Bhat wrote:
> 1. I have downloaded GRUB from ftp://alpha.gnu.org/gnu/grub/
> 2. No luck with debug=relocator option. Same thing is repeated.
I need the output with debug=relocator in latest bzr. Also the pohotos
you sent me contain only EFI shell

-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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Re: With grub.cfg Linux Kernel boot hangs

[Naresh Bhat]

Hi Vladimir,

Yes, I have tried with the option debug=relocator but nothing is the
progress. Yes, I wanted to attach the video. But the video size is
about 38MB size. I am not able to attach to the e-mail...let me see..I
can cut down the video and try to send.

--Thanks and Regards
"For things to change, we must change"
-Naresh Bhat

2011/4/7 Vladimir 'φ-coder/phcoder' Serbinenko <phcoder@gmail.com>:
> On 07.04.2011 13:13, Naresh Bhat wrote:
>> 1. I have downloaded GRUB from ftp://alpha.gnu.org/gnu/grub/
>> 2. No luck with debug=relocator option. Same thing is repeated.
> I need the output with debug=relocator in latest bzr. Also the pohotos
> you sent me contain only EFI shell
>
> --
> Regards
> Vladimir 'φ-coder/phcoder' Serbinenko
>
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>

Re: With grub.cfg Linux Kernel boot hangs

[Naresh Bhat]

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Hi Vladimir,

After I selecting the menu entry, the following thing is getting
displayed on the monitor (please refer attached photo). After 2 to 3
min..screen goes blank.

set timeout=10
set default=0
set debug=relocator
insmod efi_gop
menuentry "CGE60 Ramdisk image" {
	linux (hd2,gpt2)/boot/bzImage-2.6.32-x86-32bit-initramfs-image
video=efifb noefi
}

and the Image size is 161MB

-rw-r--r-- 1 root root 161714816 2011-04-07 19:38
bzImage-2.6.32-x86-32bit-initramfs-image

As I told you earlier. The above image I am able to boot with the
manual commands (I mean without creating grub.cfg file)


--Thanks and Regards
"For things to change, we must change"
-Naresh Bhat

2011/4/12 Naresh Bhat <nareshgbhat@gmail.com>:
> Hi Vladimir,
>
> Yes, I have tried with the option debug=relocator but nothing is the
> progress. Yes, I wanted to attach the video. But the video size is
> about 38MB size. I am not able to attach to the e-mail...let me see..I
> can cut down the video and try to send.
>
> --Thanks and Regards
> "For things to change, we must change"
> -Naresh Bhat
>
> 2011/4/7 Vladimir 'φ-coder/phcoder' Serbinenko <phcoder@gmail.com>:
>> On 07.04.2011 13:13, Naresh Bhat wrote:
>>> 1. I have downloaded GRUB from ftp://alpha.gnu.org/gnu/grub/
>>> 2. No luck with debug=relocator option. Same thing is repeated.
>> I need the output with debug=relocator in latest bzr. Also the pohotos
>> you sent me contain only EFI shell
>>
>> --
>> Regards
>> Vladimir 'φ-coder/phcoder' Serbinenko
>>
>>
>>
>> _______________________________________________
>> Grub-devel mailing list
>> Grub-devel@gnu.org
>> http://lists.gnu.org/mailman/listinfo/grub-devel
>>
>>
>

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