From: "\"David Müller (ELSOFT AG)\"" <d.mueller@elsoft.ch>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] directly execute linux zImage: cmd_bootz
Date: Thu, 23 Jan 2003 08:58:18 +0100 [thread overview]
Message-ID: <3E2FA09A.508@elsoft.ch> (raw)
In-Reply-To: <200301221713.29387.h.schurig@mn-logistik.de>
Hello
Holger Schurig wrote:
> Hi !
>
> Attached is a patch for armboot that directly calls a Linux zImage. It has
> been tested on my PXA250 platform.
>
> Prerequisites:
>
> - works only on arm, because it takes stuff from asm_arm/armlinux.c
> - set CONFIG_KERNEL_RAM_BASE to where the zImage is in Flash
>
> Problems:
>
> - I have no clue if the tag list get's correctly set up, I'm using a kernel
> 2.4 which doesn't use the tags anyway.
AFAICS 2.4 uses the tag list if there is one prepared by the bootloader.
> - how can I pass the cmdline?
By using the "ATAG_CMDLINE" in the tag list. Make sure you have defined
"CONFIG_CMDLINE_TAG" in your u-boot config file.
> - Kernel 2.4. clobbers r2, the pointer to the tag list. In your fixup code you
> can have
>
> MACHINE_START(...)
> BOOT_PARAMS(0xa0000100)
> ...
> MACHINE_END
>
> but how put I *params to some fixed address?
>
See
http://sourceforge.net/mailarchive/forum.php?thread_id=1531608&forum_id=12898
Dave
next prev parent reply other threads:[~2003-01-23 7:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-22 16:13 [U-Boot-Users] directly execute linux zImage: cmd_bootz Holger Schurig
2003-01-23 7:58 ` "David Müller (ELSOFT AG)" [this message]
2003-01-23 8:18 ` Robert Schwebel
2003-01-23 8:29 ` Holger Schurig
2003-01-23 10:29 ` "David Müller (ELSOFT AG)"
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