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# SPDX-License-Identifier: GPL-2.0-only
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menuconfig ARCH_SUNXI
ARM: use "depends on" for SoC configs instead of "if" after prompt
Many ARM sub-architectures use prompts followed by "if" conditional,
but it is wrong.
Please notice the difference between
config ARCH_FOO
bool "Foo SoCs" if ARCH_MULTI_V7
and
config ARCH_FOO
bool "Foo SoCs"
depends on ARCH_MULTI_V7
These two are *not* equivalent!
In the former statement, it is not ARCH_FOO, but its prompt that
depends on ARCH_MULTI_V7. So, it is completely valid that ARCH_FOO
is selected by another, but ARCH_MULTI_V7 is still disabled. As it is
not unmet dependency, Kconfig never warns. This is probably not what
you want.
The former should be used only when you need to do so, and you really
understand what you are doing. (In most cases, it should be wrong!)
For enabling/disabling sub-architectures, the latter is always correct.
As a good side effect, this commit fixes some entries over 80 columns
(mach-imx, mach-integrator, mach-mbevu).
[Arnd: I note that there is not really a bug here, according to
the discussion that followed, but I can see value in being consistent
and in making the lines shorter]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Jun Nie <jun.nie@linaro.org>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Krzysztof Halasa <khc@piap.pl>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-11-16 12:06:10 +09:00
bool "Allwinner SoCs"
ARM: rework endianess selection
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>
2022-04-04 11:52:31 +02:00
depends on (CPU_LITTLE_ENDIAN && ARCH_MULTI_V5) || ARCH_MULTI_V7
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select ARCH_HAS_RESET_CONTROLLER
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select CLKSRC_MMIO
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select GPIOLIB
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select PINCTRL
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select PM_OPP
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select SUN4I_TIMER
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select RESET_CONTROLLER
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help
Support for Allwinner ARM-based family of processors
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if ARCH_SUNXI
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if ARCH_MULTI_V7
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config MACH_SUN4I
bool "Allwinner A10 (sun4i) SoCs support"
default ARCH_SUNXI
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select SUN4I_INTC
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config MACH_SUN5I
bool "Allwinner A10s / A13 (sun5i) SoCs support"
default ARCH_SUNXI
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select SUN4I_INTC
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select SUN5I_HSTIMER
config MACH_SUN6I
bool "Allwinner A31 (sun6i) SoCs support"
default ARCH_SUNXI
select ARM_GIC
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select MFD_SUN6I_PRCM
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select SUN5I_HSTIMER
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select SUN6I_R_INTC
select SUNXI_NMI_INTC
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config MACH_SUN7I
bool "Allwinner A20 (sun7i) SoCs support"
default ARCH_SUNXI
select ARM_GIC
select ARM_PSCI
select HAVE_ARM_ARCH_TIMER
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select SUN5I_HSTIMER
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select SUNXI_NMI_INTC
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config MACH_SUN8I
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bool "Allwinner sun8i Family SoCs support"
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default ARCH_SUNXI
select ARM_GIC
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select MFD_SUN6I_PRCM
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select SUN6I_R_INTC
select SUNXI_NMI_INTC
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config MACH_SUN9I
bool "Allwinner (sun9i) SoCs support"
default ARCH_SUNXI
select ARM_GIC
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select SUNXI_NMI_INTC
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config ARCH_SUNXI_MC_SMP
bool
depends on SMP
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default MACH_SUN9I || MACH_SUN8I
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select ARM_CCI400_PORT_CTRL
select ARM_CPU_SUSPEND
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endif
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if ARCH_MULTI_V5
config MACH_SUNIV
bool "Allwinner ARMv5 F-series (suniv) SoCs support"
default ARCH_SUNXI
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select SUN4I_INTC
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help
Support for Allwinner suniv ARMv5 SoCs.
(F1C100A, F1C100s, F1C200s, F1C500, F1C600)
endif
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endif