From: Kumar Gala <galak@kernel.crashing.org>
To: Ian Munsie <imunsie@au1.ibm.com>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
benh@kernel.crashing.org, paulus@samba.org,
Michal Marek <mmarek@suse.cz>, Sam Ravnborg <sam@ravnborg.org>,
Andrew Morton <akpm@linux-foundation.org>,
Albert Herranz <albert_herranz@yahoo.es>,
Grant Likely <grant.likely@secretlab.ca>,
Segher Boessenkool <segher@kernel.crashing.org>,
Andreas Schwab <schwab@linux-m68k.org>,
Torez Smith <lnxtorez@linux.vnet.ibm.com>
Subject: Re: [PATCH 01/18] powerpc: Add ability to build little endian kernels
Date: Fri, 1 Oct 2010 04:18:20 -0500 [thread overview]
Message-ID: <F7E7DAE6-A132-458D-ABC3-4CC92A4C7263@kernel.crashing.org> (raw)
In-Reply-To: <1285916771-18033-2-git-send-email-imunsie@au1.ibm.com>
On Oct 1, 2010, at 2:05 AM, Ian Munsie wrote:
>
> diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
> index d361f81..074ff12 100644
> --- a/arch/powerpc/platforms/Kconfig.cputype
> +++ b/arch/powerpc/platforms/Kconfig.cputype
> @@ -329,3 +329,19 @@ config CHECK_CACHE_COHERENCY
> bool
>
> endmenu
> +
> +config ARCH_SUPPORTS_LITTLE_ENDIAN
> + bool
> +
> +config CPU_LITTLE_ENDIAN
> + bool "Build little endian kernel"
> + depends on ARCH_SUPPORTS_LITTLE_ENDIAN && EXPERIMENTAL
> + default n
> + help
> + This option selects whether a big endian or little endian kernel will
> + be built.
> +
> + Note that if building a little endian kernel, CROSS_COMPILE must
> + point to a toolchain capable of targetting little endian powerpc,
> + while the toolchain specified by CROSS32_COMPILE must be capable of
> + targetting *BIG* endian PowerPC.
> --
> 1.7.1
Shouldn't we have something that limits to the sub-arch'es that actually support it? I doubt I'm ever going to make FSL-Book-e support LE.
- k
next prev parent reply other threads:[~2010-10-01 9:19 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-01 7:05 Introduce support for little endian PowerPC Ian Munsie
2010-10-01 7:05 ` [PATCH 01/18] powerpc: Add ability to build little endian kernels Ian Munsie
2010-10-01 9:18 ` Kumar Gala [this message]
2010-10-01 11:28 ` Josh Boyer
2010-10-01 12:09 ` Benjamin Herrenschmidt
2010-10-01 11:40 ` Josh Boyer
2010-10-01 12:22 ` Benjamin Herrenschmidt
2010-10-01 7:05 ` [PATCH 02/18] powerpc: Add CROSSBE_COMPILE to build big endian boot wrapper Ian Munsie
2010-10-01 7:13 ` Geert Uytterhoeven
2010-10-01 7:19 ` Ian Munsie
2010-10-01 7:05 ` [PATCH 03/18] powerpc: Support parsing a little endian kernel from zImage wrapper Ian Munsie
2010-10-01 7:05 ` [PATCH 04/18] powerpc: Allow taishan platform to boot a little endian kernel Ian Munsie
2010-10-01 7:05 ` [PATCH 05/18] powerpc: Wire up 44x little endian boot for remaining 44x targets Ian Munsie
2010-10-01 11:27 ` Josh Boyer
2010-10-06 1:28 ` Ian Munsie
2010-10-06 1:55 ` Josh Boyer
2010-10-06 2:10 ` Sean MacLennan
2010-10-01 7:05 ` [PATCH 06/18] powerpc 44x: Set E bit in TLBs and PTEs when CPU is in little endian mode Ian Munsie
2010-10-01 7:06 ` [PATCH 07/18] powerpc: Use generic bitops for little endian bitmap operations Ian Munsie
2010-10-01 7:06 ` [PATCH 08/18] powerpc: Include the appropriate endianness header Ian Munsie
2010-10-01 7:06 ` [PATCH 09/18] powerpc: Support device tree regardless of CPU endianness Ian Munsie
2010-10-03 3:15 ` Grant Likely
2010-10-03 6:22 ` Benjamin Herrenschmidt
2010-10-01 7:06 ` [PATCH 10/18] powerpc: Support endian agnostic MMIO Ian Munsie
2010-10-01 7:06 ` [PATCH 11/18] powerpc: Make assembly endian agnostic when accessing 64bit values Ian Munsie
2010-10-01 7:06 ` [PATCH 12/18] powerpc 44x: Handle TLB miss regardless of endianness Ian Munsie
2010-10-01 7:06 ` [PATCH 13/18] powerpc 44x: Make DCR endianness agnostic Ian Munsie
2010-10-01 7:06 ` [PATCH 14/18] powerpc, of_serial: Endianness issues setting up the serial ports Ian Munsie
2010-10-07 23:23 ` Grant Likely
2010-10-01 7:06 ` [PATCH 15/18] mtd: Fix endianness issues from device tree Ian Munsie
2010-10-01 19:29 ` Artem Bityutskiy
2010-10-01 7:06 ` [PATCH 16/18] powerpc: Fix endianness issues in alignment handler Ian Munsie
2010-10-01 7:06 ` [PATCH 17/18] net: Fix endianess issues in IBM newemac driver Ian Munsie
2010-10-01 7:06 ` [PATCH 18/18] powerpc: Fix jiffies variable on little endian Ian Munsie
2010-10-01 9:02 ` Introduce support for little endian PowerPC Kumar Gala
2010-10-01 11:30 ` Josh Boyer
2010-10-01 11:55 ` Gary Thomas
2010-10-01 12:15 ` Benjamin Herrenschmidt
2010-10-01 12:37 ` Gary Thomas
2010-10-01 12:14 ` Benjamin Herrenschmidt
2010-10-01 16:20 ` Michel Dänzer
2010-10-01 20:50 ` Benjamin Herrenschmidt
2010-10-04 10:30 ` Michel Dänzer
2010-10-04 22:50 ` Benjamin Herrenschmidt
2010-10-01 17:59 ` Kumar Gala
2010-10-01 20:51 ` Benjamin Herrenschmidt
2010-10-01 22:03 ` Olof Johansson
2010-10-01 22:28 ` Benjamin Herrenschmidt
2010-10-07 16:25 ` Hollis Blanchard
2010-10-01 11:36 ` Josh Boyer
2010-10-01 12:21 ` Benjamin Herrenschmidt
2010-10-06 1:04 ` Ian Munsie
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