From: thomas.petazzoni@free-electrons.com (Thomas Petazzoni)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/6] ARM: add CPU_BE8_BOOT_LE configuration
Date: Wed, 19 Jun 2013 19:29:04 +0200 [thread overview]
Message-ID: <20130619192904.0375c15c@skate> (raw)
In-Reply-To: <1371659404-20167-2-git-send-email-ben.dooks@codethink.co.uk>
Dear Ben Dooks,
On Wed, 19 Jun 2013 17:29:58 +0100, Ben Dooks wrote:
> +config CPU_BE8_BOOT_LE
> + bool "Boot BE system from LE loader"
> + depends on CPU_ENDIAN_BE8
> + help
> + Support for running BE-8 (big-endian) from a boot environment that is
> + running in LE mode.
> +
I'm not sure to understand how this option articulates with the
CPU_ENDIAN_BE8 option, because your other patch series ("Initial
big-endian support series") in its PATCH 4 ("ARM: set BE8 if LE in head
code") already switches the kernel into BE mode even if it's booted
from a Little Endian bootloader.
Maybe what you wanted to achieve is:
* The first patch series "Initial big-endian support series" allows to
run the kernel big-endian if the bootloader has booted it big-endian.
* The second patch series "ARM big-endian - atags and loader updates",
allows to run the kernel big-endian even if the bootloader started
it little-endian.
In this case, then the PATCH 4 of your first patch series ("ARM: set
BE8 if LE in head code") should be in the second patch series, and
the code be conditional under CPU_BE8_BOOT_LE.
Or maybe I'm missing something?
Best regards,
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
next prev parent reply other threads:[~2013-06-19 17:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-19 16:29 ARM big-endian - atags and loader updates Ben Dooks
2013-06-19 16:29 ` [PATCH 1/6] ARM: add CPU_BE8_BOOT_LE configuration Ben Dooks
2013-06-19 17:29 ` Thomas Petazzoni [this message]
2013-06-20 10:58 ` Ben Dooks
2013-06-19 16:29 ` [PATCH 2/6] ARM: fixup head for atag verification Ben Dooks
2013-06-19 16:30 ` [PATCH 3/6] ARM: add atag32_to_cpu() function Ben Dooks
2013-06-19 16:30 ` [PATCH 4/6] ARM: update atag-to-fdt code to be endian agnostic Ben Dooks
2013-06-19 16:30 ` [PATCH 5/6] ARM: fixup atags " Ben Dooks
2013-06-19 16:30 ` [PATCH 6/6] ARM: ensure loader information in LE format for BE kernels Ben Dooks
2013-06-27 17:15 ` ARM big-endian - atags and loader updates Ben Dooks
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