forked from Minki/linux
5d6f52671e
Choosing big-endian vs little-endian kernels in Kconfig has not worked
correctly since the introduction of CONFIG_ARCH_MULTIPLATFORM a long
time ago.
The problems is that CONFIG_BIG_ENDIAN depends on
ARCH_SUPPORTS_BIG_ENDIAN, which can set by any one platform
in the config, but would actually have to be supported by all
of them.
This was mostly ok for ARMv6/ARMv7 builds, since these are BE8 and
tend to just work aside from problems in nonportable device drivers.
For ARMv4/v5 machines, CONFIG_BIG_ENDIAN and CONFIG_ARCH_MULTIPLATFORM
were never set together, so this was disabled on all those machines
except for IXP4xx.
As IXP4xx can now become part of ARCH_MULTIPLATFORM, it seems better to
formalize this logic: all ARMv4/v5 platforms get an explicit dependency
on being either big-endian (ixp4xx) or little-endian (the rest). We may
want to fix ixp4xx in the future to support both, but it does not work
in LE mode at the moment.
For the ARMv6/v7 platforms, there are two ways this could be handled
a) allow both modes only for platforms selecting
'ARCH_SUPPORTS_BIG_ENDIAN' today, but only LE mode for the
others, given that these were added intentionally at some
point.
b) allow both modes everwhere, given that it was already possible
to build that way by e.g. selecting ARCH_VIRT, and that the
list is not an accurate reflection of which platforms may or
may not work.
Out of these, I picked b) because it seemed slighly more logical
to me.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
29 lines
746 B
Plaintext
29 lines
746 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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menuconfig ARCH_MOXART
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bool "MOXA ART SoC"
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depends on ARCH_MULTI_V4
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depends on CPU_LITTLE_ENDIAN
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select CPU_FA526
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select ARM_DMA_MEM_BUFFERABLE
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select FARADAY_FTINTC010
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select FTTMR010_TIMER
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select GPIOLIB
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select PHYLIB if NETDEVICES
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help
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Say Y here if you want to run your kernel on hardware with a
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MOXA ART SoC.
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The MOXA ART SoC is based on a Faraday FA526 ARMv4 32-bit
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192 MHz CPU with MMU and 16KB/8KB D/I-cache (UC-7112-LX).
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Used on models UC-7101, UC-7112/UC-7110, IA240/IA241, IA3341.
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if ARCH_MOXART
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config MACH_UC7112LX
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bool "MOXA UC-7112-LX"
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depends on ARCH_MOXART
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help
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Say Y here if you intend to run this kernel on a MOXA
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UC-7112-LX embedded computer.
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endif
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