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From: "Indukumar Ilangovan" <iilangov@cisco.com>
To: <linux-mips@linux-mips.org>
Subject: manipulating e_machine value in the elf Header
Date: Thu, 6 Feb 2003 19:34:40 +0530	[thread overview]
Message-ID: <005201c2cde8$b145e5d0$a78b4d0a@apac.cisco.com> (raw)

Hi,

I'm trying to port linux kernel to a mips board with a R4700 processor. It
has a rom monitor program which can be used to load the image. (has support
for tftp boot, xmodem....) . This bootloader has a hardcoded cpu_type which
is cross checked with the e_machine value in the elf header. When I try to
load the linux kernel this check (cpu_type == e_machine) fails & hence the
boot loader aborts the loading of image.

I tried to change the e_machine type value by changing the EM_MIPS value in
include/linux/elf.h, still e_machine type is "8" in the image even after
completely rebuilding the image. I even changed the EM_MIPS value in
/usr/include/elf.h & couple of other locations (sde headers.....) still no
luck....though hand editing the elf header is an option.. I don't want to do
that !

If any of you have any idea/suggestions I would be a happy man !

Thanks in advance,
Indu

WARNING: multiple messages have this Message-ID (diff)
From: "Indukumar Ilangovan" <iilangov@cisco.com>
To: linux-mips@linux-mips.org
Subject: manipulating e_machine value in the elf Header
Date: Thu, 6 Feb 2003 19:34:40 +0530	[thread overview]
Message-ID: <005201c2cde8$b145e5d0$a78b4d0a@apac.cisco.com> (raw)
Message-ID: <20030206140440.fFQRzU8qSGkATvPvaCejHMQ10jteynLItHmIfNU12tQ@z> (raw)

Hi,

I'm trying to port linux kernel to a mips board with a R4700 processor. It
has a rom monitor program which can be used to load the image. (has support
for tftp boot, xmodem....) . This bootloader has a hardcoded cpu_type which
is cross checked with the e_machine value in the elf header. When I try to
load the linux kernel this check (cpu_type == e_machine) fails & hence the
boot loader aborts the loading of image.

I tried to change the e_machine type value by changing the EM_MIPS value in
include/linux/elf.h, still e_machine type is "8" in the image even after
completely rebuilding the image. I even changed the EM_MIPS value in
/usr/include/elf.h & couple of other locations (sde headers.....) still no
luck....though hand editing the elf header is an option.. I don't want to do
that !

If any of you have any idea/suggestions I would be a happy man !

Thanks in advance,
Indu

             reply	other threads:[~2003-02-06 14:04 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-02-06 14:04 Indukumar Ilangovan [this message]
2003-02-06 14:04 ` manipulating e_machine value in the elf Header Indukumar Ilangovan
2003-02-06 14:52 ` Ralf Baechle

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