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Diffstat (limited to 'arch/microblaze/Kconfig')
| -rw-r--r-- | arch/microblaze/Kconfig | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig new file mode 100644 index 000000000..ace5c5bf1 --- /dev/null +++ b/arch/microblaze/Kconfig @@ -0,0 +1,289 @@ +config MICROBLAZE + def_bool y + select ARCH_NO_SWAP + select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_HAS_SYNC_DMA_FOR_CPU + select ARCH_HAS_SYNC_DMA_FOR_DEVICE + select ARCH_MIGHT_HAVE_PC_PARPORT + select ARCH_NO_COHERENT_DMA_MMAP if !MMU + select ARCH_WANT_IPC_PARSE_VERSION + select BUILDTIME_EXTABLE_SORT + select TIMER_OF + select CLONE_BACKWARDS3 + select COMMON_CLK + select DMA_NONCOHERENT_OPS + select DMA_NONCOHERENT_MMAP + select GENERIC_ATOMIC64 + select GENERIC_CLOCKEVENTS + select GENERIC_CPU_DEVICES + select GENERIC_IDLE_POLL_SETUP + select GENERIC_IRQ_PROBE + select GENERIC_IRQ_SHOW + select GENERIC_PCI_IOMAP + select GENERIC_SCHED_CLOCK + select HAVE_ARCH_HASH + select HAVE_ARCH_KGDB + select HAVE_DEBUG_KMEMLEAK + select HAVE_DYNAMIC_FTRACE + select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_FUNCTION_GRAPH_TRACER + select HAVE_FUNCTION_TRACER + select NO_BOOTMEM + select HAVE_MEMBLOCK + select HAVE_MEMBLOCK_NODE_MAP + select HAVE_OPROFILE + select IRQ_DOMAIN + select XILINX_INTC + select MODULES_USE_ELF_RELA + select OF + select OF_EARLY_FLATTREE + select TRACING_SUPPORT + select VIRT_TO_BUS + select CPU_NO_EFFICIENT_FFS + +# Endianness selection +choice + prompt "Endianness selection" + default CPU_LITTLE_ENDIAN + help + microblaze architectures can be configured for either little or + big endian formats. Be sure to select the appropriate mode. + +config CPU_BIG_ENDIAN + bool "Big endian" + +config CPU_LITTLE_ENDIAN + bool "Little endian" + +endchoice + +config RWSEM_GENERIC_SPINLOCK + def_bool y + +config ZONE_DMA + def_bool y + +config RWSEM_XCHGADD_ALGORITHM + bool + +config ARCH_HAS_ILOG2_U32 + def_bool n + +config ARCH_HAS_ILOG2_U64 + def_bool n + +config GENERIC_HWEIGHT + def_bool y + +config GENERIC_CALIBRATE_DELAY + def_bool y + +config GENERIC_CSUM + def_bool y + +config STACKTRACE_SUPPORT + def_bool y + +config LOCKDEP_SUPPORT + def_bool y + +source "arch/microblaze/Kconfig.platform" + +menu "Processor type and features" + +source "kernel/Kconfig.hz" + +config MMU + bool "MMU support" + default n + +comment "Boot options" + +config CMDLINE_BOOL + bool "Default bootloader kernel arguments" + +config CMDLINE + string "Default kernel command string" + depends on CMDLINE_BOOL + default "console=ttyUL0,115200" + help + On some architectures 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. + +config CMDLINE_FORCE + bool "Force default kernel command string" + depends on CMDLINE_BOOL + default n + help + Set this to have arguments from the default kernel command string + override those passed by the boot loader. + +config SECCOMP + bool "Enable seccomp to safely compute untrusted bytecode" + depends on PROC_FS + default y + help + This kernel feature is useful for number crunching applications + that may need to compute untrusted bytecode during their + execution. By using pipes or other transports made available to + the process as file descriptors supporting the read/write + syscalls, it's possible to isolate those applications in + their own address space using seccomp. Once seccomp is + enabled via /proc/<pid>/seccomp, it cannot be disabled + and the task is only allowed to execute a few safe syscalls + defined by each seccomp mode. + + If unsure, say Y. Only embedded should say N here. + +endmenu + +menu "Kernel features" + +config NR_CPUS + int + default "1" + +config ADVANCED_OPTIONS + bool "Prompt for advanced kernel configuration options" + help + This option will enable prompting for a variety of advanced kernel + configuration options. These options can cause the kernel to not + work if they are set incorrectly, but can be used to optimize certain + aspects of kernel memory management. + + Unless you know what you are doing, say N here. + +comment "Default settings for advanced configuration options are used" + depends on !ADVANCED_OPTIONS + +config XILINX_UNCACHED_SHADOW + bool "Are you using uncached shadow for RAM ?" + depends on ADVANCED_OPTIONS && !MMU + default n + help + This is needed to be able to allocate uncachable memory regions. + The feature requires the design to define the RAM memory controller + window to be twice as large as the actual physical memory. + +config HIGHMEM + bool "High memory support" + depends on MMU + help + The address space of Microblaze processors is only 4 Gigabytes large + and it has to accommodate user address space, kernel address + space as well as some memory mapped IO. That means that, if you + have a large amount of physical memory and/or IO, not all of the + memory can be "permanently mapped" by the kernel. The physical + memory that is not permanently mapped is called "high memory". + + If unsure, say n. + +config LOWMEM_SIZE_BOOL + bool "Set maximum low memory" + depends on ADVANCED_OPTIONS && MMU + help + This option allows you to set the maximum amount of memory which + will be used as "low memory", that is, memory which the kernel can + access directly, without having to set up a kernel virtual mapping. + This can be useful in optimizing the layout of kernel virtual + memory. + + Say N here unless you know what you are doing. + +config LOWMEM_SIZE + hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL + default "0x30000000" + +config MANUAL_RESET_VECTOR + hex "Microblaze reset vector address setup" + default "0x0" + help + Set this option to have the kernel override the CPU Reset vector. + If zero, no change will be made to the MicroBlaze reset vector at + address 0x0. + If non-zero, a jump instruction to this address, will be written + to the reset vector at address 0x0. + If you are unsure, set it to default value 0x0. + +config KERNEL_START_BOOL + bool "Set custom kernel base address" + depends on ADVANCED_OPTIONS + help + This option allows you to set the kernel virtual address at which + the kernel will map low memory (the kernel image will be linked at + this address). This can be useful in optimizing the virtual memory + layout of the system. + + Say N here unless you know what you are doing. + +config KERNEL_START + hex "Virtual address of kernel base" if KERNEL_START_BOOL + default "0xc0000000" if MMU + default KERNEL_BASE_ADDR if !MMU + +config TASK_SIZE_BOOL + bool "Set custom user task size" + depends on ADVANCED_OPTIONS && MMU + help + This option allows you to set the amount of virtual address space + allocated to user tasks. This can be useful in optimizing the + virtual memory layout of the system. + + Say N here unless you know what you are doing. + +config TASK_SIZE + hex "Size of user task space" if TASK_SIZE_BOOL + default "0x80000000" + +choice + prompt "Page size" + default MICROBLAZE_4K_PAGES + depends on ADVANCED_OPTIONS && !MMU + help + Select the kernel logical page size. Increasing the page size + will reduce software overhead at each page boundary, allow + hardware prefetch mechanisms to be more effective, and allow + larger dma transfers increasing IO efficiency and reducing + overhead. However the utilization of memory will increase. + For example, each cached file will using a multiple of the + page size to hold its contents and the difference between the + end of file and the end of page is wasted. + + If unsure, choose 4K_PAGES. + +config MICROBLAZE_4K_PAGES + bool "4k page size" + +config MICROBLAZE_16K_PAGES + bool "16k page size" + +config MICROBLAZE_64K_PAGES + bool "64k page size" + +endchoice + +endmenu + +menu "Bus Options" + +config PCI + bool "PCI support" + +config PCI_DOMAINS + def_bool PCI + +config PCI_DOMAINS_GENERIC + def_bool PCI_DOMAINS + +config PCI_SYSCALL + def_bool PCI + +config PCI_XILINX + bool "Xilinx PCI host bridge support" + depends on PCI + +source "drivers/pci/Kconfig" + +endmenu |