From: Dirk Behme <dirk.behme@googlemail.com>
To: Paul Walmsley <paul@pwsan.com>
Cc: linux-omap@vger.kernel.org, linux-omap-open-source@linux.omap.com
Subject: Re: [PATCH 0/4] Runtime constants: define (some) OMAP address bases at runtime rather than compile time for multiboot
Date: Tue, 20 Nov 2007 07:24:48 +0100 [thread overview]
Message-ID: <47427DB0.8020306@googlemail.com> (raw)
In-Reply-To: <20071116232159.713389488@pwsan.com>
Paul Walmsley wrote:
> The OMAP2/3 kernel builds define several preprocessor macros for
> module base virtual addresses (e.g., OMAP2_CTRL_BASE). These macros
> are substituted with virtual addresses at compile-time, depending on
> what OMAP architecture the kernel is built for. This technique is
> simple and works well for single-OMAP kernels, but cannot be used to
> build a multi-OMAP kernel.
>
> So, convert the users of these defines to use runtime-computed global
> variables where possible. Where not possible (e.g., in static initializers),
> use chip-specific preprocessor macros. The global variables are set up
> early in the board-*.c files in the map_io() code, before almost everything
> else.
>
> This series must be applied after the SRAM patcher series posted earlier
> this week, since it relies on that code to set up register addresses in
> the assembly-language code at runtime.
>
> This series converts SDRC, SMS, and System Control Module accesses.
> Forthcoming patch series will convert PRCM and 32K sync timer register
> access.
>
> Boot-tested on N800 and 3430SDP. If someone out there could test on 2430SDP,
> that would be much appreciated. Some day I'll get my hands on a 2430SDP :-)
>
> Comments welcome,
Patch 1/4 and 3/4 of this series still apply, but 2/4 and 4/4 have
rejects. Could you check?
Many thanks
Dirk
next prev parent reply other threads:[~2007-11-20 6:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-16 23:21 [PATCH 0/4] Runtime constants: define (some) OMAP address bases at runtime rather than compile time for multiboot Paul Walmsley
2007-11-16 23:22 ` [PATCH 1/4] Runtime constants: introduce omap2_set_globals_*() Paul Walmsley
2007-11-16 23:22 ` [PATCH 2/4] Runtime constants: use runtime-computed SDRC base Paul Walmsley
2007-11-16 23:22 ` [PATCH 3/4] Runtime constants: use runtime-computed SMS base Paul Walmsley
2007-11-16 23:22 ` [PATCH 4/4] Runtime constants: use runtime-computed system control module base Paul Walmsley
2007-11-17 0:12 ` [PATCH 0/4] Runtime constants: define (some) OMAP address bases at runtime rather than compile time for multiboot Kevin Hilman
2007-11-20 6:24 ` Dirk Behme [this message]
2007-11-21 0:36 ` Paul Walmsley
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