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Commit 35f9cd08 authored by Johannes Weiner's avatar Johannes Weiner Committed by Chris Zankel
Browse files

xtensa: beat Kconfig into shape 



Instead of making support code depend on variants or platforms, the
latter should select what they need explicitely.

Otherwise this starts looking weird when support code depends on
!XTENSA_PLATFORM_FOO && !XTENSA_PLATFORM_BAR etc.

This also includes some minor fixlets like converting bool and default
to def_bool and fixing indentation and whitespace errors.

Signed-off-by: default avatarJohannes Weiner <jw@emlix.com>
Signed-off-by: default avatarChris Zankel <chris@zankel.net>
parent 4f682fbb

arch/xtensa/Kconfig

+78 −88
Original line number Diff line number Diff line
@@ -4,16 +4,13 @@ 
mainmenu "Linux/Xtensa Kernel Configuration"



config FRAME_POINTER

	bool

	default n

	def_bool n



config ZONE_DMA

	bool

	default y

	def_bool y



config XTENSA

	bool

	default y

	def_bool y

	select HAVE_IDE

	help

	  Xtensa processors are 32-bit RISC machines designed by Tensilica
@@ -24,28 +21,22 @@ config XTENSA 
	  a home page at <http://xtensa.sourceforge.net/>.



config RWSEM_XCHGADD_ALGORITHM

	bool

	default y

	def_bool y



config GENERIC_FIND_NEXT_BIT

	bool

	default y

	def_bool y



config GENERIC_HWEIGHT

	bool

	default y

	def_bool y



config GENERIC_HARDIRQS

	bool

	default y

	def_bool y



config ARCH_HAS_ILOG2_U32

	bool

	default n

	def_bool n



config ARCH_HAS_ILOG2_U64

	bool

	default n

	def_bool n



config NO_IOPORT

	def_bool y
@@ -57,6 +48,9 @@ config HZ 
source "init/Kconfig"

source "kernel/Kconfig.freezer"



config MMU

	def_bool n



menu "Processor type and features"



choice
@@ -65,20 +59,18 @@ choice 


config XTENSA_VARIANT_FSF

	bool "fsf - default (not generic) configuration"

	select MMU



config XTENSA_VARIANT_DC232B

	bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"

	select MMU

	help

	  This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE).

endchoice



config MMU

	bool

	default y



config XTENSA_UNALIGNED_USER

	bool "Unaligned memory access in use space"

	---help---

	help

	  The Xtensa architecture currently does not handle unaligned

	  memory accesses in hardware but through an exception handler.

	  Per default, unaligned memory accesses are disabled in user space.
@@ -87,7 +79,7 @@ config XTENSA_UNALIGNED_USER 


config PREEMPT

	bool "Preemptible Kernel"

	---help---

	help

          This option reduces the latency of the kernel when reacting to

          real-time or interactive events by allowing a low priority process to

          be preempted even if it is in kernel mode executing a system call.
@@ -105,6 +97,32 @@ config MATH_EMULATION 


endmenu



config XTENSA_CALIBRATE_CCOUNT

	def_bool n

	help

	  On some platforms (XT2000, for example), the CPU clock rate can

	  vary.  The frequency can be determined, however, by measuring

	  against a well known, fixed frequency, such as an UART oscillator.



config SERIAL_CONSOLE

	def_bool n



config XTENSA_ISS_NETWORK

	def_bool n



menu "Bus options"



config PCI

	bool "PCI support"

	default y

	help

	  Find out whether you have a PCI motherboard. PCI is the name of a

	  bus system, i.e. the way the CPU talks to the other stuff inside

	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or

	  VESA. If you have PCI, say Y, otherwise N.



source "drivers/pci/Kconfig"



menu "Platform options"



choice
@@ -113,11 +131,16 @@ choice 


config XTENSA_PLATFORM_ISS

	bool "ISS"

	select XTENSA_CALIBRATE_CCOUNT

	select SERIAL_CONSOLE

	select XTENSA_ISS_NETWORK

	help

	  ISS is an acronym for Tensilica's Instruction Set Simulator.



config XTENSA_PLATFORM_XT2000

	bool "XT2000"

	select XTENSA_CALIBRATE_CCOUNT

	select PCI

	help

	  XT2000 is the name of Tensilica's feature-rich emulation platform.

	  This hardware is capable of running a full Linux distribution.
@@ -125,21 +148,14 @@ config XTENSA_PLATFORM_XT2000 
endchoice





config XTENSA_CALIBRATE_CCOUNT

	bool "Auto calibration of the CPU clock rate"

	---help---

	  On some platforms (XT2000, for example), the CPU clock rate can

	  vary.  The frequency can be determined, however, by measuring

	  against a well known, fixed frequency, such as an UART oscillator.



config XTENSA_CPU_CLOCK

	int "CPU clock rate [MHz]"

	depends on !XTENSA_CALIBRATE_CCOUNT

	default "16"

	default 16



config GENERIC_CALIBRATE_DELAY

	bool "Auto calibration of the BogoMIPS value"

	---help---

	help

	  The BogoMIPS value can easily be derived from the CPU frequency.



config CMDLINE_BOOL
@@ -156,38 +172,13 @@ config CMDLINE 
	  time by entering them here. As a minimum, you should specify the

	  memory size and the root device (e.g., mem=64M root=/dev/nfs).



config SERIAL_CONSOLE

	bool

	depends on XTENSA_PLATFORM_ISS

	default y



config XTENSA_ISS_NETWORK

	bool

	depends on XTENSA_PLATFORM_ISS

	default y



source "mm/Kconfig"



endmenu



menu "Bus options"



config PCI

	bool "PCI support" if !XTENSA_PLATFORM_ISS

	depends on !XTENSA_PLATFORM_ISS

	default y

	help

	  Find out whether you have a PCI motherboard. PCI is the name of a

	  bus system, i.e. the way the CPU talks to the other stuff inside

	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or

	  VESA. If you have PCI, say Y, otherwise N.



source "drivers/pci/Kconfig"



config HOTPLUG



	bool "Support for hot-pluggable devices"

	---help---

	help

	  Say Y here if you want to plug devices into your computer while

	  the system is running, and be able to use them quickly.  In many

	  cases, the devices can likewise be unplugged at any time too.
@@ -213,9 +204,8 @@ menu "Executable file formats" 


# only elf supported

config KCORE_ELF

        bool

	def_bool y

        depends on PROC_FS

        default y

        help

          If you enabled support for /proc file system then the file

          /proc/kcore will contain the kernel core image in ELF format. This