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From: Matt Fleming <matt@console-pimps.org>
To: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/9] x86 EFI boot stub
Date: Fri, 26 Aug 2011 13:29:52 +0100	[thread overview]
Message-ID: <1314361792.3577.5.camel@mfleming-mobl1.ger.corp.intel.com> (raw)
In-Reply-To: <4E441774.2040904@gmail.com>

On Thu, 2011-08-11 at 19:55 +0200, Maarten Lankhorst wrote: 
> > Hmm.. do you have early printk enabled? Can you hook up a serial console
> > to this machine?
> >
> I get no output on serial console with vmlinuz.efi so it crashes
> before 'early console in decompress_kernel' is printed.

Hey Maarten, sorry I took so long to respond to this.

OK, so you don't get any output on the serial console. Were you passing
"console=" on the kernel cmdline? If so, the best way to debug this hang
is to add,

	efi_call_phys4(sys_table->runtime->reset_system, EFI_RESET_COLD,
			EFI_SUCCESS, 0, NULL);

just after we setup 'sys_table' in efi_main(). If your machine resets,
then we at least know that the firmware loaded the bzImage correctly.

P.S which machine is this and what is the output of the 'ver' command?

-- 
Matt Fleming, Intel Open Source Technology Center


      reply	other threads:[~2011-08-26 12:29 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-11 10:59 Matt Fleming
2011-08-11 10:59 ` [PATCH 1/9] x86: Don't use magic strings for EFI loader signature Matt Fleming
2011-08-11 10:59 ` [PATCH 2/9] efi.h: Add struct definition for boot time services Matt Fleming
2011-08-11 10:59 ` [PATCH 3/9] efi.h: Add efi_image_loaded_t Matt Fleming
2011-08-11 10:59 ` [PATCH 4/9] efi.h: Add allocation types for boottime->allocate_pages() Matt Fleming
2011-08-11 10:59 ` [PATCH 5/9] efi.h: Add graphics protocol guid Matt Fleming
2011-08-11 10:59 ` [PATCH 6/9] efi.h: Add boottime->locate_handle search types Matt Fleming
2011-08-11 10:59 ` [PATCH 7/9] efi: Add EFI file I/O data types Matt Fleming
2011-08-11 10:59 ` [PATCH 8/9] x86, efi: EFI boot stub support Matt Fleming
2011-08-11 18:09   ` Andi Kleen
2011-08-17 11:46     ` Matt Fleming
2011-08-11 10:59 ` [PATCH 9/9] x86, efi: Make efi_call_phys_prelog() CONFIG_RELOCATABLE-aware Matt Fleming
2011-08-11 13:05 ` [PATCH 0/9] x86 EFI boot stub Maarten Lankhorst
2011-08-11 15:14   ` Matt Fleming
2011-08-11 17:55     ` Maarten Lankhorst
2011-08-26 12:29       ` Matt Fleming [this message]

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