# # For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.txt. # mainmenu "Linux Kernel Configuration" config M32R bool default y config SBUS bool config UID16 bool default y config GENERIC_ISA_DMA bool default y source "init/Kconfig" menu "Processor type and features" choice prompt "Platform Type" default PLAT_MAPPI config PLAT_MAPPI bool "Mappi-I" help The Mappi-I is an FPGA board for SOC (System-On-a-Chip) prototyping. You can operate a Linux system on this board by using an M32R softmacro core, which is a fully-synthesizable functional model described in Verilog-HDL. The Mappi-I board was the first platform, which had been used to port and develop a Linux system for the M32R processor. Currently, the Mappi-II, an heir to the Mappi-I, is available. config PLAT_USRV bool "uServer" config PLAT_M32700UT bool "M32700UT" help The M3T-M32700UT is an evaluation board based on uT-Engine specification. This board has an M32700 (Chaos) evaluation chip. You can say Y for SMP, because the M32700 is a single chip multiprocessor. config PLAT_OPSPUT bool "OPSPUT" help The OPSPUT is an evaluation board based on uT-Engine specification. This board has a OPSP-REP chip. config PLAT_OAKS32R bool "OAKS32R" help The OAKS32R is a tiny, inexpensive evaluation board. Please note that if you say Y here and choose chip "M32102", say N for MMU and select a no-MMU version kernel, otherwise a kernel with MMU support will not work, because the M32102 is a microcontroller for embedded systems and it has no MMU. config PLAT_MAPPI2 bool "Mappi-II(M3A-ZA36/M3A-ZA52)" endchoice choice prompt "Processor family" default CHIP_M32700 config CHIP_M32700 bool "M32700 (Chaos)" config CHIP_M32102 bool "M32102" config CHIP_VDEC2 bool "VDEC2" config CHIP_OPSP bool "OPSP" endchoice config MMU bool "Support for memory management hardware" depends on CHIP_M32700 || CHIP_VDEC2 || CHIP_OPSP default y config TLB_ENTRIES int "TLB Entries" depends on CHIP_M32700 || CHIP_VDEC2 || CHIP_OPSP default 32 if CHIP_M32700 || CHIP_OPSP default 16 if CHIP_VDEC2 config ISA_M32R bool depends on CHIP_M32102 default y config ISA_M32R2 bool depends on CHIP_M32700 || CHIP_VDEC2 || CHIP_OPSP default y config ISA_DSP_LEVEL2 bool depends on CHIP_M32700 || CHIP_OPSP default y config ISA_DUAL_ISSUE bool depends on CHIP_M32700 || CHIP_OPSP default y config BUS_CLOCK int "Bus Clock [Hz] (integer)" default "70000000" if PLAT_MAPPI default "25000000" if PLAT_USRV default "50000000" if PLAT_M32700UT default "50000000" if PLAT_OPSPUT default "33333333" if PLAT_OAKS32R default "20000000" if PLAT_MAPPI2 config TIMER_DIVIDE int "Timer divider (integer)" default "128" config CPU_LITTLE_ENDIAN bool "Generate little endian code" default n config MEMORY_START hex "Physical memory start address (hex)" default "08000000" if PLAT_MAPPI || PLAT_MAPPI2 default "08000000" if PLAT_USRV default "08000000" if PLAT_M32700UT default "08000000" if PLAT_OPSPUT default "01000000" if PLAT_OAKS32R config MEMORY_SIZE hex "Physical memory size (hex)" default "04000000" if PLAT_MAPPI || PLAT_MAPPI2 default "02000000" if PLAT_USRV default "01000000" if PLAT_M32700UT default "01000000" if PLAT_OPSPUT default "00800000" if PLAT_OAKS32R config NOHIGHMEM bool default y config DISCONTIGMEM bool "Internal RAM Support" depends on CHIP_M32700 || CHIP_M32102 || CHIP_VDEC2 || CHIP_OPSP default y config IRAM_START hex "Internal memory start address (hex)" default "00f00000" depends on (CHIP_M32700 || CHIP_M32102 || CHIP_VDEC2 || CHIP_OPSP) && DISCONTIGMEM config IRAM_SIZE hex "Internal memory size (hex)" depends on (CHIP_M32700 || CHIP_M32102 || CHIP_VDEC2 || CHIP_OPSP) && DISCONTIGMEM default "00080000" if CHIP_M32700 default "00010000" if CHIP_M32102 || CHIP_OPSP default "00008000" if CHIP_VDEC2 # # Define implied options from the CPU selection here # config RWSEM_GENERIC_SPINLOCK bool depends on M32R default y config RWSEM_XCHGADD_ALGORITHM bool default n config PREEMPT bool "Preemptible Kernel" 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. This allows applications to run more reliably even when the system is under load. Say Y here if you are building a kernel for a desktop, embedded or real-time system. Say N if you are unsure. config HAVE_DEC_LOCK bool depends on (SMP || PREEMPT) default n config SMP bool "Symmetric multi-processing support" ---help--- This enables support for systems with more than one CPU. If you have a system with only one CPU, like most personal computers, say N. If you have a system with more than one CPU, say Y. If you say N here, the kernel will run on single and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, the kernel will run on many, but not all, singleprocessor machines. On a singleprocessor machine, the kernel will run faster if you say N here. People using multiprocessor machines who say Y here should also say Y to "Enhanced Real Time Clock Support", below. The "Advanced Power Management" code will be disabled if you say Y here. See also the , and the SMP-HOWTO available at . If you don't know what to do here, say N. config CHIP_M32700_TS1 bool "Workaround code for the M32700 TS1 chip's bug" depends on (CHIP_M32700 && SMP) default n config NR_CPUS int "Maximum number of CPUs (2-32)" range 2 32 depends on SMP default "2" help This allows you to specify the maximum number of CPUs which this kernel will support. The maximum supported value is 32 and the minimum value which makes sense is 2. This is purely to save memory - each supported CPU adds approximately eight kilobytes to the kernel image. # Common NUMA Features config NUMA bool "Numa Memory Allocation Support" depends on SMP default n # turning this on wastes a bunch of space. # Summit needs it only when NUMA is on config BOOT_IOREMAP bool depends on NUMA default n endmenu menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)" config PCI bool "PCI support" default n 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. The PCI-HOWTO, available from , contains valuable information about which PCI hardware does work under Linux and which doesn't. choice prompt "PCI access mode" depends on PCI default PCI_GOANY config PCI_GOBIOS bool "BIOS" ---help--- On PCI systems, the BIOS can be used to detect the PCI devices and determine their configuration. However, some old PCI motherboards have BIOS bugs and may crash if this is done. Also, some embedded PCI-based systems don't have any BIOS at all. Linux can also try to detect the PCI hardware directly without using the BIOS. With this option, you can specify how Linux should detect the PCI devices. If you choose "BIOS", the BIOS will be used, if you choose "Direct", the BIOS won't be used, and if you choose "Any", the kernel will try the direct access method and falls back to the BIOS if that doesn't work. If unsure, go with the default, which is "Any". config PCI_GODIRECT bool "Direct" config PCI_GOANY bool "Any" endchoice config PCI_BIOS bool depends on PCI && (PCI_GOBIOS || PCI_GOANY) default y config PCI_DIRECT bool depends on PCI && (PCI_GODIRECT || PCI_GOANY) default y source "drivers/pci/Kconfig" config ISA bool "ISA support" help Find out whether you have ISA slots on your motherboard. ISA is the name of a bus system, i.e. the way the CPU talks to the other stuff inside your box. If you have ISA, say Y, otherwise N. source "drivers/pcmcia/Kconfig" source "drivers/pci/hotplug/Kconfig" endmenu menu "Executable file formats" source "fs/Kconfig.binfmt" endmenu source "drivers/Kconfig" source "fs/Kconfig" source "arch/m32r/oprofile/Kconfig" menu "Kernel hacking" config DEBUG_KERNEL bool "Kernel debugging" help Say Y here if you are developing drivers or trying to debug and identify kernel problems. config DEBUG_STACKOVERFLOW bool "Check for stack overflows" depends on DEBUG_KERNEL config DEBUG_SLAB bool "Debug memory allocations" depends on DEBUG_KERNEL help Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory. config DEBUG_IOVIRT bool "Memory mapped I/O debugging" depends on DEBUG_KERNEL help Say Y here to get warned whenever an attempt is made to do I/O on obviously invalid addresses such as those generated when ioremap() calls are forgotten. Memory mapped I/O will go through an extra check to catch access to unmapped ISA addresses, an access method that can still be used by old drivers that are being ported from 2.0/2.2. config MAGIC_SYSRQ bool "Magic SysRq key" depends on DEBUG_KERNEL help If you say Y here, you will have some control over the system even if the system crashes for example during kernel debugging (e.g., you will be able to flush the buffer cache to disk, reboot the system immediately or dump some status information). This is accomplished by pressing various keys while holding SysRq (Alt+PrintScreen). It also works on a serial console (on PC hardware at least), if you send a BREAK and then within 5 seconds a command keypress. The keys are documented in . Don't say Y unless you really know what this hack does. config DEBUG_SPINLOCK bool "Spinlock debugging" depends on DEBUG_KERNEL help Say Y here and build SMP to catch missing spinlock initialization and certain other kinds of spinlock errors commonly made. This is best used in conjunction with the NMI watchdog so that spinlock deadlocks are also debuggable. config DEBUG_PAGEALLOC bool "Page alloc debugging" depends on DEBUG_KERNEL help Unmap pages from the kernel linear mapping after free_pages(). This results in a large slowdown, but helps to find certain types of memory corruptions. config DEBUG_INFO bool "Compile the kernel with debug info" depends on DEBUG_KERNEL help If you say Y here the resulting kernel image will include debugging info resulting in a larger kernel image. Say Y here only if you plan to use gdb to debug the kernel. If you don't debug the kernel, you can say N. config DEBUG_SPINLOCK_SLEEP bool "Sleep-inside-spinlock checking" help If you say Y here, various routines which may sleep will become very noisy if they are called with a spinlock held. config FRAME_POINTER bool "Compile the kernel with frame pointers" help If you say Y here the resulting kernel image will be slightly larger and slower, but it will give very useful debugging information. If you don't debug the kernel, you can say N, but we may not be able to solve problems without frame pointers. endmenu source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig"