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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>
38 lines
967 B
Text
38 lines
967 B
Text
# SPDX-License-Identifier: GPL-2.0-only
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menuconfig ARCH_OXNAS
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bool "Oxford Semiconductor OXNAS Family SoCs"
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depends on (ARCH_MULTI_V5 && CPU_LITTLE_ENDIAN) || ARCH_MULTI_V6
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select ARCH_HAS_RESET_CONTROLLER
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select COMMON_CLK_OXNAS
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select GPIOLIB
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select MFD_SYSCON
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select OXNAS_RPS_TIMER
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select PINCTRL_OXNAS
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select RESET_CONTROLLER
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select RESET_OXNAS
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select VERSATILE_FPGA_IRQ
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select PINCTRL
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help
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Support for OxNas SoC family developed by Oxford Semiconductor.
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if ARCH_OXNAS
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config MACH_OX810SE
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bool "Support OX810SE Based Products"
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depends on ARCH_MULTI_V5
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select CPU_ARM926T
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help
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Include Support for the Oxford Semiconductor OX810SE SoC Based Products.
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config MACH_OX820
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bool "Support OX820 Based Products"
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depends on ARCH_MULTI_V6
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select ARM_GIC
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select DMA_CACHE_RWFO if SMP
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select HAVE_SMP
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select HAVE_ARM_SCU if SMP
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select HAVE_ARM_TWD if SMP
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help
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Include Support for the Oxford Semiconductor OX820 SoC Based Products.
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endif
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