From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/2] image: Implement IH_TYPE_KERNEL_NOLOAD
Date: Thu, 1 Dec 2011 09:56:49 +0100 [thread overview]
Message-ID: <201112010956.49466.sr@denx.de> (raw)
In-Reply-To: <1320956274-16597-1-git-send-email-swarren@nvidia.com>
On Thursday 10 November 2011 21:17:53 Stephen Warren wrote:
> The legacy uImage format includes an absolute load and entry-point
> address. When bootm operates on a kernel uImage in memory that isn't
> loaded at the address in the image's load address, U-Boot will copy
> the image to its address in the header.
>
> Some kernel images can actually be loaded and used at any arbitrary
> address. An example is an ARM Linux kernel zImage file. To represent
> this capability, IH_TYPE_KERNEL_NOLOAD is implemented, which operates
> just like IH_TYPE_KERNEL, except that the load address header is
> ignored, and U-Boot does not copy the image to its load address, but
> rather uses it in-place.
>
> This is useful when sharing a single (uImage-wrapped) zImage across
> multiple boards with different memory layouts; in this case, a specific
> load address need not be picked when creating the uImage, but instead
> is selected by the board-specific U-Boot environment used to load and
> boot that image.
>
> v2: Rename from IH_TYPE_KERNEL_ANYLOAD to IH_TYPE_KERNEL_NOLOAD.
Applied to u-boot-staging/sr at denx.de. Thanks.
Best regards,
Stefan
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
prev parent reply other threads:[~2011-12-01 8:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-10 20:17 [U-Boot] [PATCH 1/2] image: Implement IH_TYPE_KERNEL_NOLOAD Stephen Warren
2011-11-10 20:17 ` [U-Boot] [PATCH 2/2] image: Don't detect XIP images as overlapping Stephen Warren
2011-12-01 8:57 ` Stefan Roese
2011-11-30 21:10 ` [U-Boot] [PATCH 1/2] image: Implement IH_TYPE_KERNEL_NOLOAD Stephen Warren
2011-11-30 22:54 ` Wolfgang Denk
2011-12-01 8:56 ` Stefan Roese [this message]
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