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- config FRAME_POINTER
- def_bool n
- config ZONE_DMA
- def_bool y
- config XTENSA
- def_bool y
- select HAVE_IDE
- select HAVE_GENERIC_HARDIRQS
- select GENERIC_IRQ_SHOW
- select GENERIC_CPU_DEVICES
- help
- Xtensa processors are 32-bit RISC machines designed by Tensilica
- primarily for embedded systems. These processors are both
- configurable and extensible. The Linux port to the Xtensa
- architecture supports all processor configurations and extensions,
- with reasonable minimum requirements. The Xtensa Linux project has
- a home page at <http://xtensa.sourceforge.net/>.
- config RWSEM_XCHGADD_ALGORITHM
- def_bool y
- config GENERIC_HWEIGHT
- def_bool y
- config GENERIC_GPIO
- def_bool y
- config ARCH_HAS_ILOG2_U32
- def_bool n
- config ARCH_HAS_ILOG2_U64
- def_bool n
- config NO_IOPORT
- def_bool y
- config HZ
- int
- default 100
- source "init/Kconfig"
- source "kernel/Kconfig.freezer"
- config MMU
- def_bool n
- config VARIANT_IRQ_SWITCH
- def_bool n
- menu "Processor type and features"
- choice
- prompt "Xtensa Processor Configuration"
- default XTENSA_VARIANT_FSF
- 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).
- config XTENSA_VARIANT_S6000
- bool "s6000 - Stretch software configurable processor"
- select VARIANT_IRQ_SWITCH
- select ARCH_REQUIRE_GPIOLIB
- select XTENSA_CALIBRATE_CCOUNT
- endchoice
- config XTENSA_UNALIGNED_USER
- bool "Unaligned memory access in use space"
- 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.
- Say Y here to enable unaligned memory access in user space.
- source "kernel/Kconfig.preempt"
- config MATH_EMULATION
- bool "Math emulation"
- help
- Can we use information of configuration file?
- 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"
- endmenu
- menu "Platform options"
- choice
- prompt "Xtensa System Type"
- default XTENSA_PLATFORM_ISS
- 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"
- help
- XT2000 is the name of Tensilica's feature-rich emulation platform.
- This hardware is capable of running a full Linux distribution.
- config XTENSA_PLATFORM_S6105
- bool "S6105"
- select SERIAL_CONSOLE
- endchoice
- config XTENSA_CPU_CLOCK
- int "CPU clock rate [MHz]"
- depends on !XTENSA_CALIBRATE_CCOUNT
- default 16
- config GENERIC_CALIBRATE_DELAY
- bool "Auto calibration of the BogoMIPS value"
- help
- The BogoMIPS value can easily be derived from the CPU frequency.
- config CMDLINE_BOOL
- bool "Default bootloader kernel arguments"
- config CMDLINE
- string "Initial kernel command string"
- depends on CMDLINE_BOOL
- default "console=ttyS0,38400 root=/dev/ram"
- help
- On some architectures (EBSA110 and CATS), there is currently no way
- for the boot loader to pass arguments to the kernel. For these
- architectures, you should supply some command-line options at build
- 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).
- source "mm/Kconfig"
- config HOTPLUG
- bool "Support for hot-pluggable devices"
- 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.
- One well known example of this is PCMCIA- or PC-cards, credit-card
- size devices such as network cards, modems or hard drives which are
- plugged into slots found on all modern laptop computers. Another
- example, used on modern desktops as well as laptops, is USB.
- Enable HOTPLUG and build a modular kernel. Get agent software
- (from <http://linux-hotplug.sourceforge.net/>) and install it.
- Then your kernel will automatically call out to a user mode "policy
- agent" (/sbin/hotplug) to load modules and set up software needed
- to use devices as you hotplug them.
- source "drivers/pcmcia/Kconfig"
- source "drivers/pci/hotplug/Kconfig"
- endmenu
- menu "Executable file formats"
- # only elf supported
- config KCORE_ELF
- def_bool y
- depends on PROC_FS
- help
- If you enabled support for /proc file system then the file
- /proc/kcore will contain the kernel core image in ELF format. This
- can be used in gdb:
- $ cd /usr/src/linux ; gdb vmlinux /proc/kcore
- This is especially useful if you have compiled the kernel with the
- "-g" option to preserve debugging information. It is mainly used
- for examining kernel data structures on the live kernel.
- source "fs/Kconfig.binfmt"
- endmenu
- source "net/Kconfig"
- source "drivers/Kconfig"
- source "fs/Kconfig"
- menu "Xtensa initrd options"
- depends on BLK_DEV_INITRD
- config EMBEDDED_RAMDISK
- bool "Embed root filesystem ramdisk into the kernel"
- config EMBEDDED_RAMDISK_IMAGE
- string "Filename of gzipped ramdisk image"
- depends on EMBEDDED_RAMDISK
- default "ramdisk.gz"
- help
- This is the filename of the ramdisk image to be built into the
- kernel. Relative pathnames are relative to arch/xtensa/boot/ramdisk/.
- The ramdisk image is not part of the kernel distribution; you must
- provide one yourself.
- endmenu
- source "arch/xtensa/Kconfig.debug"
- source "security/Kconfig"
- source "crypto/Kconfig"
- source "lib/Kconfig"
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