forked from Minki/linux
719736e1cc
'default n' is the default value for any bool or tristate Kconfig
setting so there is no need to write it explicitly.
Also since commit f467c5640c ("kconfig: only write '# CONFIG_FOO
is not set' for visible symbols") the Kconfig behavior is the same
regardless of 'default n' being present or not:
...
One side effect of (and the main motivation for) this change is making
the following two definitions behave exactly the same:
config FOO
bool
config FOO
bool
default n
With this change, neither of these will generate a
'# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied).
That might make it clearer to people that a bare 'default n' is
redundant.
...
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
330 lines
9.2 KiB
Plaintext
330 lines
9.2 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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menu "Platform support"
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source "arch/powerpc/platforms/powernv/Kconfig"
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source "arch/powerpc/platforms/pseries/Kconfig"
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source "arch/powerpc/platforms/chrp/Kconfig"
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source "arch/powerpc/platforms/512x/Kconfig"
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source "arch/powerpc/platforms/52xx/Kconfig"
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source "arch/powerpc/platforms/powermac/Kconfig"
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source "arch/powerpc/platforms/maple/Kconfig"
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source "arch/powerpc/platforms/pasemi/Kconfig"
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source "arch/powerpc/platforms/ps3/Kconfig"
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source "arch/powerpc/platforms/cell/Kconfig"
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source "arch/powerpc/platforms/8xx/Kconfig"
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source "arch/powerpc/platforms/82xx/Kconfig"
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source "arch/powerpc/platforms/83xx/Kconfig"
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source "arch/powerpc/platforms/85xx/Kconfig"
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source "arch/powerpc/platforms/86xx/Kconfig"
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source "arch/powerpc/platforms/embedded6xx/Kconfig"
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source "arch/powerpc/platforms/44x/Kconfig"
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source "arch/powerpc/platforms/40x/Kconfig"
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source "arch/powerpc/platforms/amigaone/Kconfig"
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config KVM_GUEST
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bool "KVM Guest support"
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select EPAPR_PARAVIRT
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---help---
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This option enables various optimizations for running under the KVM
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hypervisor. Overhead for the kernel when not running inside KVM should
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be minimal.
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In case of doubt, say Y
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config EPAPR_PARAVIRT
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bool "ePAPR para-virtualization support"
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help
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Enables ePAPR para-virtualization support for guests.
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In case of doubt, say Y
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config PPC_NATIVE
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bool
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depends on 6xx || PPC64
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help
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Support for running natively on the hardware, i.e. without
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a hypervisor. This option is not user-selectable but should
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be selected by all platforms that need it.
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config PPC_OF_BOOT_TRAMPOLINE
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bool "Support booting from Open Firmware or yaboot"
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depends on 6xx || PPC64
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default y
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help
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Support from booting from Open Firmware or yaboot using an
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Open Firmware client interface. This enables the kernel to
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communicate with open firmware to retrieve system information
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such as the device tree.
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In case of doubt, say Y
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config PPC_DT_CPU_FTRS
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bool "Device-tree based CPU feature discovery & setup"
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depends on PPC_BOOK3S_64
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default y
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help
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This enables code to use a new device tree binding for describing CPU
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compatibility and features. Saying Y here will attempt to use the new
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binding if the firmware provides it. Currently only the skiboot
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firmware provides this binding.
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If you're not sure say Y.
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config UDBG_RTAS_CONSOLE
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bool "RTAS based debug console"
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depends on PPC_RTAS
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config PPC_SMP_MUXED_IPI
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bool
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help
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Select this option if your platform supports SMP and your
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interrupt controller provides less than 4 interrupts to each
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cpu. This will enable the generic code to multiplex the 4
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messages on to one ipi.
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config IPIC
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bool
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config MPIC
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bool
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config MPIC_TIMER
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bool "MPIC Global Timer"
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depends on MPIC && FSL_SOC
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help
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The MPIC global timer is a hardware timer inside the
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Freescale PIC complying with OpenPIC standard. When the
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specified interval times out, the hardware timer generates
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an interrupt. The driver currently is only tested on fsl
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chip, but it can potentially support other global timers
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complying with the OpenPIC standard.
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config FSL_MPIC_TIMER_WAKEUP
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tristate "Freescale MPIC global timer wakeup driver"
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depends on FSL_SOC && MPIC_TIMER && PM
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help
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The driver provides a way to wake up the system by MPIC
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timer.
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e.g. "echo 5 > /sys/devices/system/mpic/timer_wakeup"
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config PPC_EPAPR_HV_PIC
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bool
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select EPAPR_PARAVIRT
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config MPIC_WEIRD
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bool
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config MPIC_MSGR
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bool "MPIC message register support"
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depends on MPIC
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help
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Enables support for the MPIC message registers. These
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registers are used for inter-processor communication.
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config PPC_I8259
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bool
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config U3_DART
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bool
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depends on PPC64
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config PPC_RTAS
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bool
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config RTAS_ERROR_LOGGING
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bool
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depends on PPC_RTAS
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config PPC_RTAS_DAEMON
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bool
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depends on PPC_RTAS
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config RTAS_PROC
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bool "Proc interface to RTAS"
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depends on PPC_RTAS && PROC_FS
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default y
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config RTAS_FLASH
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tristate "Firmware flash interface"
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depends on PPC64 && RTAS_PROC
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config MMIO_NVRAM
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bool
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config MPIC_U3_HT_IRQS
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bool
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config MPIC_BROKEN_REGREAD
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bool
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depends on MPIC
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help
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This option enables a MPIC driver workaround for some chips
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that have a bug that causes some interrupt source information
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to not read back properly. It is safe to use on other chips as
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well, but enabling it uses about 8KB of memory to keep copies
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of the register contents in software.
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config EEH
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bool
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depends on (PPC_POWERNV || PPC_PSERIES) && PCI
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default y
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config PPC_MPC106
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bool
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config PPC_970_NAP
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bool
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config PPC_P7_NAP
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bool
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config PPC_INDIRECT_PIO
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bool
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select GENERIC_IOMAP
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config PPC_INDIRECT_MMIO
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bool
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config PPC_IO_WORKAROUNDS
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bool
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source "drivers/cpufreq/Kconfig"
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menu "CPUIdle driver"
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source "drivers/cpuidle/Kconfig"
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endmenu
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config PPC601_SYNC_FIX
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bool "Workarounds for PPC601 bugs"
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depends on 6xx && PPC_PMAC
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help
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Some versions of the PPC601 (the first PowerPC chip) have bugs which
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mean that extra synchronization instructions are required near
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certain instructions, typically those that make major changes to the
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CPU state. These extra instructions reduce performance slightly.
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If you say N here, these extra instructions will not be included,
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resulting in a kernel which will run faster but may not run at all
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on some systems with the PPC601 chip.
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If in doubt, say Y here.
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config TAU
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bool "On-chip CPU temperature sensor support"
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depends on 6xx
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help
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G3 and G4 processors have an on-chip temperature sensor called the
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'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
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temperature within 2-4 degrees Celsius. This option shows the current
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on-die temperature in /proc/cpuinfo if the cpu supports it.
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Unfortunately, on some chip revisions, this sensor is very inaccurate
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and in many cases, does not work at all, so don't assume the cpu
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temp is actually what /proc/cpuinfo says it is.
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config TAU_INT
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bool "Interrupt driven TAU driver (DANGEROUS)"
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depends on TAU
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---help---
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The TAU supports an interrupt driven mode which causes an interrupt
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whenever the temperature goes out of range. This is the fastest way
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to get notified the temp has exceeded a range. With this option off,
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a timer is used to re-check the temperature periodically.
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However, on some cpus it appears that the TAU interrupt hardware
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is buggy and can cause a situation which would lead unexplained hard
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lockups.
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Unless you are extending the TAU driver, or enjoy kernel/hardware
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debugging, leave this option off.
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config TAU_AVERAGE
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bool "Average high and low temp"
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depends on TAU
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---help---
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The TAU hardware can compare the temperature to an upper and lower
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bound. The default behavior is to show both the upper and lower
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bound in /proc/cpuinfo. If the range is large, the temperature is
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either changing a lot, or the TAU hardware is broken (likely on some
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G4's). If the range is small (around 4 degrees), the temperature is
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relatively stable. If you say Y here, a single temperature value,
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halfway between the upper and lower bounds, will be reported in
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/proc/cpuinfo.
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If in doubt, say N here.
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config QE_GPIO
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bool "QE GPIO support"
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depends on QUICC_ENGINE
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select GPIOLIB
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help
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Say Y here if you're going to use hardware that connects to the
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QE GPIOs.
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config CPM2
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bool "Enable support for the CPM2 (Communications Processor Module)"
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depends on (FSL_SOC_BOOKE && PPC32) || 8260
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select CPM
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select PPC_PCI_CHOICE
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select GPIOLIB
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help
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The CPM2 (Communications Processor Module) is a coprocessor on
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embedded CPUs made by Freescale. Selecting this option means that
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you wish to build a kernel for a machine with a CPM2 coprocessor
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on it (826x, 827x, 8560).
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config FSL_ULI1575
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bool
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select GENERIC_ISA_DMA
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help
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Supports for the ULI1575 PCIe south bridge that exists on some
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Freescale reference boards. The boards all use the ULI in pretty
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much the same way.
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config CPM
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bool
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select GENERIC_ALLOCATOR
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config OF_RTC
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bool
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help
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Uses information from the OF or flattened device tree to instantiate
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platform devices for direct mapped RTC chips like the DS1742 or DS1743.
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config GEN_RTC
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bool "Use the platform RTC operations from user space"
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select RTC_CLASS
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select RTC_DRV_GENERIC
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help
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This option provides backwards compatibility with the old gen_rtc.ko
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module that was traditionally used for old PowerPC machines.
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Platforms should migrate to enabling the RTC_DRV_GENERIC by hand
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replacing their get_rtc_time/set_rtc_time callbacks with
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a proper RTC device driver.
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config SIMPLE_GPIO
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bool "Support for simple, memory-mapped GPIO controllers"
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depends on PPC
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select GPIOLIB
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help
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Say Y here to support simple, memory-mapped GPIO controllers.
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These are usually BCSRs used to control board's switches, LEDs,
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chip-selects, Ethernet/USB PHY's power and various other small
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on-board peripherals.
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config MCU_MPC8349EMITX
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bool "MPC8349E-mITX MCU driver"
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depends on I2C=y && PPC_83xx
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select GPIOLIB
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help
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Say Y here to enable soft power-off functionality on the Freescale
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boards with the MPC8349E-mITX-compatible MCU chips. This driver will
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also register MCU GPIOs with the generic GPIO API, so you'll able
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to use MCU pins as GPIOs.
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config XILINX_PCI
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bool "Xilinx PCI host bridge support"
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depends on PCI && XILINX_VIRTEX
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endmenu
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