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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 01:41:39 +00:00
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>
268 lines
5.1 KiB
Text
268 lines
5.1 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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menuconfig ARCH_MXC
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bool "Freescale i.MX family"
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depends on (ARCH_MULTI_V4_V5 && CPU_LITTLE_ENDIAN) || \
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ARCH_MULTI_V6_V7 || ARM_SINGLE_ARMV7M
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select CLKSRC_IMX_GPT
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select GENERIC_IRQ_CHIP
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select GPIOLIB
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select PINCTRL
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select PM_OPP if PM
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select SOC_BUS
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select SRAM
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help
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Support for Freescale MXC/iMX-based family of processors
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if ARCH_MXC
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config MXC_TZIC
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bool
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config MXC_AVIC
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bool
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config HAVE_IMX_ANATOP
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bool
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config HAVE_IMX_GPC
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bool
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select PM_GENERIC_DOMAINS if PM
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config HAVE_IMX_MMDC
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bool
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config HAVE_IMX_SRC
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def_bool y if SMP
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select ARCH_HAS_RESET_CONTROLLER
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if ARCH_MULTI_V6
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comment "ARM1136 platforms"
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config SOC_IMX31
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bool "i.MX31 support"
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select CPU_V6
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select MXC_AVIC
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help
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This enables support for Freescale i.MX31 processor
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config SOC_IMX35
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bool "i.MX35 support"
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select MXC_AVIC
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select PINCTRL_IMX35
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help
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This enables support for Freescale i.MX35 processor
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endif
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if ARCH_MULTI_V4T
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config SOC_IMX1
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bool "i.MX1 support"
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select CPU_ARM920T
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select MXC_AVIC
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select PINCTRL_IMX1
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help
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This enables support for Freescale i.MX1 processor
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endif
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if ARCH_MULTI_V5
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config SOC_IMX25
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bool "i.MX25 support"
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select CPU_ARM926T
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select MXC_AVIC
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select PINCTRL_IMX25
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help
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This enables support for Freescale i.MX25 processor
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config SOC_IMX27
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bool "i.MX27 support"
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select CPU_ARM926T
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select MXC_AVIC
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select PINCTRL_IMX27
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help
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This enables support for Freescale i.MX27 processor
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endif
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if ARCH_MULTI_V7
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comment "Cortex-A platforms"
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config SOC_IMX5
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bool
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select HAVE_IMX_SRC
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select MXC_TZIC
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config SOC_IMX50
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bool "i.MX50 support"
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select PINCTRL_IMX50
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select SOC_IMX5
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help
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This enables support for Freescale i.MX50 processor.
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config SOC_IMX51
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bool "i.MX51 support"
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select PINCTRL_IMX51
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select SOC_IMX5
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help
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This enables support for Freescale i.MX51 processor
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config SOC_IMX53
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bool "i.MX53 support"
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select PINCTRL_IMX53
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select SOC_IMX5
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help
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This enables support for Freescale i.MX53 processor.
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config SOC_IMX6
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bool
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select ARM_CPU_SUSPEND if (PM || CPU_IDLE)
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select ARM_GIC
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select HAVE_IMX_ANATOP
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select HAVE_IMX_GPC
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select HAVE_IMX_MMDC
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select HAVE_IMX_SRC
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select MFD_SYSCON
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select PL310_ERRATA_769419 if CACHE_L2X0
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config SOC_IMX6Q
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bool "i.MX6 Quad/DualLite support"
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select ARM_ERRATA_764369 if SMP
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select ARM_ERRATA_754322
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select ARM_ERRATA_775420
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select HAVE_ARM_SCU if SMP
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select HAVE_ARM_TWD
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select PINCTRL_IMX6Q
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select SOC_IMX6
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help
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This enables support for Freescale i.MX6 Quad processor.
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config SOC_IMX6SL
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bool "i.MX6 SoloLite support"
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select ARM_ERRATA_754322
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select ARM_ERRATA_775420
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select PINCTRL_IMX6SL
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select SOC_IMX6
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help
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This enables support for Freescale i.MX6 SoloLite processor.
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config SOC_IMX6SLL
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bool "i.MX6 SoloLiteLite support"
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select ARM_ERRATA_754322
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select ARM_ERRATA_775420
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select PINCTRL_IMX6SLL
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select SOC_IMX6
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help
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This enables support for Freescale i.MX6 SoloLiteLite processor.
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config SOC_IMX6SX
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bool "i.MX6 SoloX support"
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select ARM_ERRATA_754322
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select ARM_ERRATA_775420
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select PINCTRL_IMX6SX
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select SOC_IMX6
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help
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This enables support for Freescale i.MX6 SoloX processor.
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config SOC_IMX6UL
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bool "i.MX6 UltraLite support"
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select PINCTRL_IMX6UL
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select SOC_IMX6
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select ARM_ERRATA_814220
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help
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This enables support for Freescale i.MX6 UltraLite processor.
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config SOC_LS1021A
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bool "Freescale LS1021A support"
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select ARM_GIC
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select HAVE_ARM_ARCH_TIMER
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select ZONE_DMA if ARM_LPAE
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help
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This enables support for Freescale LS1021A processor.
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endif
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if ARCH_MULTI_V7 || ARM_SINGLE_ARMV7M
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comment "Cortex-A/Cortex-M asymmetric multiprocessing platforms"
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config SOC_IMX7D_CA7
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bool
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select ARM_GIC
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select HAVE_ARM_ARCH_TIMER
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select HAVE_IMX_ANATOP
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select HAVE_IMX_MMDC
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select HAVE_IMX_SRC
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select IMX_GPCV2
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config SOC_IMX7D_CM4
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bool
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select ARMV7M_SYSTICK
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config SOC_IMX7D
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bool "i.MX7 Dual support"
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select PINCTRL_IMX7D
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select SOC_IMX7D_CA7 if ARCH_MULTI_V7
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select SOC_IMX7D_CM4 if ARM_SINGLE_ARMV7M
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select ARM_ERRATA_814220 if ARCH_MULTI_V7
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help
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This enables support for Freescale i.MX7 Dual processor.
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config SOC_IMX7ULP
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bool "i.MX7ULP support"
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select CLKSRC_IMX_TPM
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select PINCTRL_IMX7ULP
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select SOC_IMX7D_CA7 if ARCH_MULTI_V7
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select SOC_IMX7D_CM4 if ARM_SINGLE_ARMV7M
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help
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This enables support for Freescale i.MX7 Ultra Low Power processor.
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config SOC_IMXRT
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bool "i.MXRT support"
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depends on ARM_SINGLE_ARMV7M
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select ARMV7M_SYSTICK if ARM_SINGLE_ARMV7M
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help
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This enables support for Freescale i.MXRT Crossover processor.
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config SOC_VF610
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bool "Vybrid Family VF610 support"
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select ARM_GIC if ARCH_MULTI_V7
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select PINCTRL_VF610
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help
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This enables support for Freescale Vybrid VF610 processor.
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choice
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prompt "Clocksource for scheduler clock"
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depends on SOC_VF610
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default VF_USE_ARM_GLOBAL_TIMER
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config VF_USE_ARM_GLOBAL_TIMER
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bool "Use ARM Global Timer"
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depends on ARCH_MULTI_V7
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select ARM_GLOBAL_TIMER
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select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
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help
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Use the ARM Global Timer as clocksource
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config VF_USE_PIT_TIMER
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bool "Use PIT timer"
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select VF_PIT_TIMER
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help
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Use SoC Periodic Interrupt Timer (PIT) as clocksource
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endchoice
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endif
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endif
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