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Diffstat (limited to 'kernel/arch/powerpc/Kconfig')
| -rw-r--r-- | kernel/arch/powerpc/Kconfig | 1094 |
1 files changed, 1094 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/Kconfig b/kernel/arch/powerpc/Kconfig new file mode 100644 index 000000000..7b70a5754 --- /dev/null +++ b/kernel/arch/powerpc/Kconfig @@ -0,0 +1,1094 @@ +source "arch/powerpc/platforms/Kconfig.cputype" + +config PPC32 + bool + default y if !PPC64 + +config 32BIT + bool + default y if PPC32 + +config 64BIT + bool + default y if PPC64 + +config WORD_SIZE + int + default 64 if PPC64 + default 32 if !PPC64 + +config ARCH_PHYS_ADDR_T_64BIT + def_bool PPC64 || PHYS_64BIT + +config ARCH_DMA_ADDR_T_64BIT + def_bool ARCH_PHYS_ADDR_T_64BIT + +config MMU + bool + default y + +config HAVE_SETUP_PER_CPU_AREA + def_bool PPC64 + +config NEED_PER_CPU_EMBED_FIRST_CHUNK + def_bool PPC64 + +config NR_IRQS + int "Number of virtual interrupt numbers" + range 32 32768 + default "512" + help + This defines the number of virtual interrupt numbers the kernel + can manage. Virtual interrupt numbers are what you see in + /proc/interrupts. If you configure your system to have too few, + drivers will fail to load or worse - handle with care. + +config STACKTRACE_SUPPORT + bool + default y + +config HAVE_LATENCYTOP_SUPPORT + def_bool y + +config TRACE_IRQFLAGS_SUPPORT + bool + default y + +config LOCKDEP_SUPPORT + bool + default y + +config RWSEM_GENERIC_SPINLOCK + bool + default y if PREEMPT_RT_FULL + +config RWSEM_XCHGADD_ALGORITHM + bool + default y if !PREEMPT_RT_FULL + +config GENERIC_LOCKBREAK + bool + default y + depends on SMP && PREEMPT + +config ARCH_HAS_ILOG2_U32 + bool + default y + +config ARCH_HAS_ILOG2_U64 + bool + default y if 64BIT + +config GENERIC_HWEIGHT + bool + default y + +config PPC + bool + default y + select ARCH_MIGHT_HAVE_PC_PARPORT + select ARCH_MIGHT_HAVE_PC_SERIO + select BINFMT_ELF + select ARCH_HAS_ELF_RANDOMIZE + select OF + select OF_EARLY_FLATTREE + select OF_RESERVED_MEM + select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_DYNAMIC_FTRACE + select HAVE_FUNCTION_TRACER + select HAVE_FUNCTION_GRAPH_TRACER + select SYSCTL_EXCEPTION_TRACE + select ARCH_WANT_OPTIONAL_GPIOLIB + select VIRT_TO_BUS if !PPC64 + select HAVE_IDE + select HAVE_IOREMAP_PROT + select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN + select HAVE_KPROBES + select HAVE_ARCH_KGDB + select HAVE_KRETPROBES + select HAVE_ARCH_TRACEHOOK + select HAVE_MEMBLOCK + select HAVE_MEMBLOCK_NODE_MAP + select HAVE_DMA_ATTRS + select HAVE_DMA_API_DEBUG + select HAVE_OPROFILE + select HAVE_DEBUG_KMEMLEAK + select ARCH_HAS_SG_CHAIN + select GENERIC_ATOMIC64 if PPC32 + select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE + select HAVE_PERF_EVENTS + select HAVE_REGS_AND_STACK_ACCESS_API + select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 + select ARCH_WANT_IPC_PARSE_VERSION + select SPARSE_IRQ + select IRQ_DOMAIN + select GENERIC_IRQ_SHOW + select GENERIC_IRQ_SHOW_LEVEL + select IRQ_FORCED_THREADING + select HAVE_RCU_TABLE_FREE if SMP + select HAVE_SYSCALL_TRACEPOINTS + select HAVE_BPF_JIT + select HAVE_ARCH_JUMP_LABEL + select ARCH_HAVE_NMI_SAFE_CMPXCHG + select ARCH_HAS_GCOV_PROFILE_ALL + select GENERIC_SMP_IDLE_THREAD + select GENERIC_CMOS_UPDATE + select GENERIC_TIME_VSYSCALL_OLD + select GENERIC_CLOCKEVENTS + select GENERIC_CLOCKEVENTS_BROADCAST if SMP + select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST + select GENERIC_STRNCPY_FROM_USER + select GENERIC_STRNLEN_USER + select HAVE_PREEMPT_LAZY + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_RELA + select CLONE_BACKWARDS + select ARCH_USE_BUILTIN_BSWAP + select OLD_SIGSUSPEND + select OLD_SIGACTION if PPC32 + select HAVE_DEBUG_STACKOVERFLOW + select HAVE_IRQ_EXIT_ON_IRQ_STACK + select ARCH_USE_CMPXCHG_LOCKREF if PPC64 + select HAVE_ARCH_AUDITSYSCALL + select ARCH_SUPPORTS_ATOMIC_RMW + select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN + select NO_BOOTMEM + select HAVE_GENERIC_RCU_GUP + select HAVE_PERF_EVENTS_NMI if PPC64 + +config GENERIC_CSUM + def_bool CPU_LITTLE_ENDIAN + +config EARLY_PRINTK + bool + default y + +config PANIC_TIMEOUT + int + default 180 + +config COMPAT + bool + default y if PPC64 + select COMPAT_BINFMT_ELF + select ARCH_WANT_OLD_COMPAT_IPC + select COMPAT_OLD_SIGACTION + +config SYSVIPC_COMPAT + bool + depends on COMPAT && SYSVIPC + default y + +# All PPC32s use generic nvram driver through ppc_md +config GENERIC_NVRAM + bool + default y if PPC32 + +config SCHED_OMIT_FRAME_POINTER + bool + default y + +config ARCH_MAY_HAVE_PC_FDC + bool + default PCI + +config PPC_UDBG_16550 + bool + default n + +config GENERIC_TBSYNC + bool + default y if PPC32 && SMP + default n + +config AUDIT_ARCH + bool + default y + +config GENERIC_BUG + bool + default y + depends on BUG + +config SYS_SUPPORTS_APM_EMULATION + default y if PMAC_APM_EMU + bool + +config EPAPR_BOOT + bool + help + Used to allow a board to specify it wants an ePAPR compliant wrapper. + default n + +config DEFAULT_UIMAGE + bool + help + Used to allow a board to specify it wants a uImage built by default + default n + +config ARCH_HIBERNATION_POSSIBLE + bool + default y + +config ARCH_SUSPEND_POSSIBLE + def_bool y + depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \ + (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \ + || 44x || 40x + +config PPC_DCR_NATIVE + bool + default n + +config PPC_DCR_MMIO + bool + default n + +config PPC_DCR + bool + depends on PPC_DCR_NATIVE || PPC_DCR_MMIO + default y + +config PPC_OF_PLATFORM_PCI + bool + depends on PCI + depends on PPC64 # not supported on 32 bits yet + default n + +config ARCH_SUPPORTS_DEBUG_PAGEALLOC + depends on PPC32 || PPC_STD_MMU_64 + def_bool y + +config ARCH_SUPPORTS_UPROBES + def_bool y + +config PPC_ADV_DEBUG_REGS + bool + depends on 40x || BOOKE + default y + +config PPC_ADV_DEBUG_IACS + int + depends on PPC_ADV_DEBUG_REGS + default 4 if 44x + default 2 + +config PPC_ADV_DEBUG_DACS + int + depends on PPC_ADV_DEBUG_REGS + default 2 + +config PPC_ADV_DEBUG_DVCS + int + depends on PPC_ADV_DEBUG_REGS + default 2 if 44x + default 0 + +config PPC_ADV_DEBUG_DAC_RANGE + bool + depends on PPC_ADV_DEBUG_REGS && 44x + default y + +config PPC_EMULATE_SSTEP + bool + default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT + +config ZONE_DMA32 + bool + default y if PPC64 + +config PGTABLE_LEVELS + int + default 2 if !PPC64 + default 3 if PPC_64K_PAGES + default 4 + +source "init/Kconfig" + +source "kernel/Kconfig.freezer" + +source "arch/powerpc/sysdev/Kconfig" +source "arch/powerpc/platforms/Kconfig" + +menu "Kernel options" + +config HIGHMEM + bool "High memory support" + depends on PPC32 && !PREEMPT_RT_FULL + +source kernel/Kconfig.hz +source kernel/Kconfig.preempt +source "fs/Kconfig.binfmt" + +config HUGETLB_PAGE_SIZE_VARIABLE + bool + depends on HUGETLB_PAGE + default y + +config MATH_EMULATION + bool "Math emulation" + depends on 4xx || 8xx || PPC_MPC832x || BOOKE + ---help--- + Some PowerPC chips designed for embedded applications do not have + a floating-point unit and therefore do not implement the + floating-point instructions in the PowerPC instruction set. If you + say Y here, the kernel will include code to emulate a floating-point + unit, which will allow programs that use floating-point + instructions to run. + + This is also useful to emulate missing (optional) instructions + such as fsqrt on cores that do have an FPU but do not implement + them (such as Freescale BookE). + +choice + prompt "Math emulation options" + default MATH_EMULATION_FULL + depends on MATH_EMULATION + +config MATH_EMULATION_FULL + bool "Emulate all the floating point instructions" + ---help--- + Select this option will enable the kernel to support to emulate + all the floating point instructions. If your SoC doesn't have + a FPU, you should select this. + +config MATH_EMULATION_HW_UNIMPLEMENTED + bool "Just emulate the FPU unimplemented instructions" + ---help--- + Select this if you know there does have a hardware FPU on your + SoC, but some floating point instructions are not implemented by that. + +endchoice + +config PPC_TRANSACTIONAL_MEM + bool "Transactional Memory support for POWERPC" + depends on PPC_BOOK3S_64 + depends on SMP + select ALTIVEC + select VSX + default n + ---help--- + Support user-mode Transactional Memory on POWERPC. + +config IOMMU_HELPER + def_bool PPC64 + +config SWIOTLB + bool "SWIOTLB support" + default n + select IOMMU_HELPER + ---help--- + Support for IO bounce buffering for systems without an IOMMU. + This allows us to DMA to the full physical address space on + platforms where the size of a physical address is larger + than the bus address. Not all platforms support this. + +config HOTPLUG_CPU + bool "Support for enabling/disabling CPUs" + depends on SMP && (PPC_PSERIES || \ + PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) + ---help--- + Say Y here to be able to disable and re-enable individual + CPUs at runtime on SMP machines. + + Say N if you are unsure. + +config ARCH_CPU_PROBE_RELEASE + def_bool y + depends on HOTPLUG_CPU + +config ARCH_ENABLE_MEMORY_HOTPLUG + def_bool y + +config ARCH_HAS_WALK_MEMORY + def_bool y + +config ARCH_ENABLE_MEMORY_HOTREMOVE + def_bool y + +config PPC64_SUPPORTS_MEMORY_FAILURE + bool "Add support for memory hwpoison" + depends on PPC_BOOK3S_64 + default "y" if PPC_POWERNV + select ARCH_SUPPORTS_MEMORY_FAILURE + +config KEXEC + bool "kexec system call" + depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) + help + kexec is a system call that implements the ability to shutdown your + current kernel, and to start another kernel. It is like a reboot + but it is independent of the system firmware. And like a reboot + you can start any kernel with it, not just Linux. + + The name comes from the similarity to the exec system call. + + It is an ongoing process to be certain the hardware in a machine + is properly shutdown, so do not be surprised if this code does not + initially work for you. As of this writing the exact hardware + interface is strongly in flux, so no good recommendation can be + made. + +config CRASH_DUMP + bool "Build a kdump crash kernel" + depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) + select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE + help + Build a kernel suitable for use as a kdump capture kernel. + The same kernel binary can be used as production kernel and dump + capture kernel. + +config FA_DUMP + bool "Firmware-assisted dump" + depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC + help + A robust mechanism to get reliable kernel crash dump with + assistance from firmware. This approach does not use kexec, + instead firmware assists in booting the kdump kernel + while preserving memory contents. Firmware-assisted dump + is meant to be a kdump replacement offering robustness and + speed not possible without system firmware assistance. + + If unsure, say "N" + +config IRQ_ALL_CPUS + bool "Distribute interrupts on all CPUs by default" + depends on SMP + help + This option gives the kernel permission to distribute IRQs across + multiple CPUs. Saying N here will route all IRQs to the first + CPU. Generally saying Y is safe, although some problems have been + reported with SMP Power Macintoshes with this option enabled. + +config NUMA + bool "NUMA support" + depends on PPC64 + default y if SMP && PPC_PSERIES + +config NODES_SHIFT + int + default "8" if PPC64 + default "4" + depends on NEED_MULTIPLE_NODES + +config USE_PERCPU_NUMA_NODE_ID + def_bool y + depends on NUMA + +config HAVE_MEMORYLESS_NODES + def_bool y + depends on NUMA + +config ARCH_SELECT_MEMORY_MODEL + def_bool y + depends on PPC64 + +config ARCH_FLATMEM_ENABLE + def_bool y + depends on (PPC64 && !NUMA) || PPC32 + +config ARCH_SPARSEMEM_ENABLE + def_bool y + depends on PPC64 + select SPARSEMEM_VMEMMAP_ENABLE + +config ARCH_SPARSEMEM_DEFAULT + def_bool y + depends on (SMP && PPC_PSERIES) || PPC_PS3 + +config SYS_SUPPORTS_HUGETLBFS + bool + +source "mm/Kconfig" + +config ARCH_MEMORY_PROBE + def_bool y + depends on MEMORY_HOTPLUG + +# Some NUMA nodes have memory ranges that span +# other nodes. Even though a pfn is valid and +# between a node's start and end pfns, it may not +# reside on that node. See memmap_init_zone() +# for details. +config NODES_SPAN_OTHER_NODES + def_bool y + depends on NEED_MULTIPLE_NODES + +config PPC_HAS_HASH_64K + bool + depends on PPC64 + default n + +config STDBINUTILS + bool "Using standard binutils settings" + depends on 44x + default y + help + Turning this option off allows you to select 256KB PAGE_SIZE on 44x. + Note, that kernel will be able to run only those applications, + which had been compiled using binutils later than 2.17.50.0.3 with + '-zmax-page-size' set to 256K (the default is 64K). Or, if using + the older binutils, you can patch them with a trivial patch, which + changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000. + +choice + prompt "Page size" + default PPC_4K_PAGES + 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. + + Some dedicated systems, such as software raid serving with + accelerated calculations, have shown significant increases. + + If you configure a 64 bit kernel for 64k pages but the + processor does not support them, then the kernel will simulate + them with 4k pages, loading them on demand, but with the + reduced software overhead and larger internal fragmentation. + For the 32 bit kernel, a large page option will not be offered + unless it is supported by the configured processor. + + If unsure, choose 4K_PAGES. + +config PPC_4K_PAGES + bool "4k page size" + +config PPC_16K_PAGES + bool "16k page size" if 44x || PPC_8xx + +config PPC_64K_PAGES + bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 + depends on !PPC_FSL_BOOK3E + select PPC_HAS_HASH_64K if PPC_STD_MMU_64 + +config PPC_256K_PAGES + bool "256k page size" if 44x + depends on !STDBINUTILS + help + Make the page size 256k. + + As the ELF standard only requires alignment to support page + sizes up to 64k, you will need to compile all of your user + space applications with a non-standard binutils settings + (see the STDBINUTILS description for details). + + Say N unless you know what you are doing. + +endchoice + +config FORCE_MAX_ZONEORDER + int "Maximum zone order" + range 9 64 if PPC64 && PPC_64K_PAGES + default "9" if PPC64 && PPC_64K_PAGES + range 13 64 if PPC64 && !PPC_64K_PAGES + default "13" if PPC64 && !PPC_64K_PAGES + range 9 64 if PPC32 && PPC_16K_PAGES + default "9" if PPC32 && PPC_16K_PAGES + range 7 64 if PPC32 && PPC_64K_PAGES + default "7" if PPC32 && PPC_64K_PAGES + range 5 64 if PPC32 && PPC_256K_PAGES + default "5" if PPC32 && PPC_256K_PAGES + range 11 64 + default "11" + help + The kernel memory allocator divides physically contiguous memory + blocks into "zones", where each zone is a power of two number of + pages. This option selects the largest power of two that the kernel + keeps in the memory allocator. If you need to allocate very large + blocks of physically contiguous memory, then you may need to + increase this value. + + This config option is actually maximum order plus one. For example, + a value of 11 means that the largest free memory block is 2^10 pages. + + The page size is not necessarily 4KB. For example, on 64-bit + systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep + this in mind when choosing a value for this option. + +config PPC_SUBPAGE_PROT + bool "Support setting protections for 4k subpages" + depends on PPC_STD_MMU_64 && PPC_64K_PAGES + help + This option adds support for a system call to allow user programs + to set access permissions (read/write, readonly, or no access) + on the 4k subpages of each 64k page. + +config PPC_COPRO_BASE + bool + default n + +config SCHED_SMT + bool "SMT (Hyperthreading) scheduler support" + depends on PPC64 && SMP + help + SMT scheduler support improves the CPU scheduler's decision making + when dealing with POWER5 cpus at a cost of slightly increased + overhead in some places. If unsure say N here. + +config PPC_DENORMALISATION + bool "PowerPC denormalisation exception handling" + depends on PPC_BOOK3S_64 + default "y" if PPC_POWERNV + ---help--- + Add support for handling denormalisation of single precision + values. Useful for bare metal only. If unsure say Y here. + +config CMDLINE_BOOL + bool "Default bootloader kernel arguments" + +config CMDLINE + string "Initial kernel command string" + depends on CMDLINE_BOOL + default "console=ttyS0,9600 console=tty0 root=/dev/sda2" + help + On some platforms, there is currently no way for the boot loader to + pass arguments to the kernel. For these platforms, you can supply + some command-line options at build time by entering them here. In + most cases you will need to specify the root device here. + +config CMDLINE_FORCE + bool "Always use the default kernel command string" + depends on CMDLINE_BOOL + help + Always use the default kernel command string, even if the boot + loader passes other arguments to the kernel. + This is useful if you cannot or don't want to change the + command-line options your boot loader passes to the kernel. + +config EXTRA_TARGETS + string "Additional default image types" + help + List additional targets to be built by the bootwrapper here (separated + by spaces). This is useful for targets that depend of device tree + files in the .dts directory. + + Targets in this list will be build as part of the default build + target, or when the user does a 'make zImage' or a + 'make zImage.initrd'. + + If unsure, leave blank + +config ARCH_WANTS_FREEZER_CONTROL + def_bool y + depends on ADB_PMU + +source kernel/power/Kconfig + +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 + +config ISA_DMA_API + bool + default PCI + +menu "Bus options" + +config ISA + bool "Support for ISA-bus hardware" + depends on PPC_CHRP + select PPC_I8259 + 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 an Apple machine, say N here; if you + have an IBM RS/6000 or pSeries machine, say Y. If you have an + embedded board, consult your board documentation. + +config ZONE_DMA + bool + default y + +config NEED_DMA_MAP_STATE + def_bool (PPC64 || NOT_COHERENT_CACHE) + +config NEED_SG_DMA_LENGTH + def_bool y + +config GENERIC_ISA_DMA + bool + depends on ISA_DMA_API + default y + +config PPC_INDIRECT_PCI + bool + depends on PCI + default y if 40x || 44x + default n + +config EISA + bool + +config SBUS + bool + +config FSL_SOC + bool + +config FSL_PCI + bool + select PPC_INDIRECT_PCI + select PCI_QUIRKS + +config FSL_PMC + bool + default y + depends on SUSPEND && (PPC_85xx || PPC_86xx) + help + Freescale MPC85xx/MPC86xx power management controller support + (suspend/resume). For MPC83xx see platforms/83xx/suspend.c + +config PPC4xx_CPM + bool + default y + depends on SUSPEND && (44x || 40x) + help + PPC4xx Clock Power Management (CPM) support (suspend/resume). + It also enables support for two different idle states (idle-wait + and idle-doze). + +config 4xx_SOC + bool + +config FSL_LBC + bool "Freescale Local Bus support" + depends on FSL_SOC + help + Enables reporting of errors from the Freescale local bus + controller. Also contains some common code used by + drivers for specific local bus peripherals. + +config FSL_GTM + bool + depends on PPC_83xx || QUICC_ENGINE || CPM2 + help + Freescale General-purpose Timers support + +# Yes MCA RS/6000s exist but Linux-PPC does not currently support any +config MCA + bool + +# Platforms that what PCI turned unconditionally just do select PCI +# in their config node. Platforms that want to choose at config +# time should select PPC_PCI_CHOICE +config PPC_PCI_CHOICE + bool + +config PCI + bool "PCI support" if PPC_PCI_CHOICE + default y if !40x && !CPM2 && !8xx && !PPC_83xx \ + && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON + default PCI_QSPAN if !4xx && !CPM2 && 8xx + select GENERIC_PCI_IOMAP + help + Find out whether your system includes a PCI bus. PCI is the name of + a bus system, i.e. the way the CPU talks to the other stuff inside + your box. If you say Y here, the kernel will include drivers and + infrastructure code to support PCI bus devices. + +config PCI_DOMAINS + def_bool PCI + +config PCI_SYSCALL + def_bool PCI + +config PCI_QSPAN + bool "QSpan PCI" + depends on !4xx && !CPM2 && 8xx + select PPC_I8259 + help + Say Y here if you have a system based on a Motorola 8xx-series + embedded processor with a QSPAN PCI interface, otherwise say N. + +config PCI_8260 + bool + depends on PCI && 8260 + select PPC_INDIRECT_PCI + default y + +source "drivers/pci/pcie/Kconfig" + +source "drivers/pci/Kconfig" + +source "drivers/pcmcia/Kconfig" + +source "drivers/pci/hotplug/Kconfig" + +config HAS_RAPIDIO + bool + default n + +config RAPIDIO + tristate "RapidIO support" + depends on HAS_RAPIDIO || PCI + help + If you say Y here, the kernel will include drivers and + infrastructure code to support RapidIO interconnect devices. + +config FSL_RIO + bool "Freescale Embedded SRIO Controller support" + depends on RAPIDIO = y && HAS_RAPIDIO + default "n" + ---help--- + Include support for RapidIO controller on Freescale embedded + processors (MPC8548, MPC8641, etc). + +source "drivers/rapidio/Kconfig" + +endmenu + +config NONSTATIC_KERNEL + bool + default n + +menu "Advanced setup" + depends on PPC32 + +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 LOWMEM_SIZE_BOOL + bool "Set maximum low memory" + depends on ADVANCED_OPTIONS + 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 LOWMEM_CAM_NUM_BOOL + bool "Set number of CAMs to use to map low memory" + depends on ADVANCED_OPTIONS && FSL_BOOKE + help + This option allows you to set the maximum number of CAM slots that + will be used to map low memory. There are a limited number of slots + available and even more limited number that will fit in the L1 MMU. + However, using more entries will allow mapping more low memory. This + can be useful in optimizing the layout of kernel virtual memory. + + Say N here unless you know what you are doing. + +config LOWMEM_CAM_NUM + depends on FSL_BOOKE + int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL + default 3 + +config DYNAMIC_MEMSTART + bool "Enable page aligned dynamic load address for kernel" + depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) + select NONSTATIC_KERNEL + help + This option enables the kernel to be loaded at any page aligned + physical address. The kernel creates a mapping from KERNELBASE to + the address where the kernel is loaded. The page size here implies + the TLB page size of the mapping for kernel on the particular platform. + Please refer to the init code for finding the TLB page size. + + DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE + kernel image, where the only restriction is the page aligned kernel + load address. When this option is enabled, the compile time physical + address CONFIG_PHYSICAL_START is ignored. + + This option is overridden by CONFIG_RELOCATABLE + +config RELOCATABLE + bool "Build a relocatable kernel" + depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE) + select NONSTATIC_KERNEL + help + This builds a kernel image that is capable of running at the + location the kernel is loaded at, without any alignment restrictions. + This feature is a superset of DYNAMIC_MEMSTART and hence overrides it. + + One use is for the kexec on panic case where the recovery kernel + must live at a different physical address than the primary + kernel. + + Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address + it has been loaded at and the compile time physical addresses + CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START + setting can still be useful to bootwrappers that need to know the + load address of the kernel (eg. u-boot/mkimage). + +config RELOCATABLE_PPC32 + def_bool y + depends on PPC32 && RELOCATABLE + +config PAGE_OFFSET_BOOL + bool "Set custom page offset address" + depends on ADVANCED_OPTIONS + help + This option allows you to set the kernel virtual address at which + the kernel will map low memory. This can be useful in optimizing + the virtual memory layout of the system. + + Say N here unless you know what you are doing. + +config PAGE_OFFSET + hex "Virtual address of memory base" if PAGE_OFFSET_BOOL + default "0xc0000000" + +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 be loaded. Normally this should match PAGE_OFFSET + however there are times (like kdump) that one might not want them + to be the same. + + Say N here unless you know what you are doing. + +config KERNEL_START + hex "Virtual address of kernel base" if KERNEL_START_BOOL + default PAGE_OFFSET if PAGE_OFFSET_BOOL + default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL + default "0xc0000000" + +config PHYSICAL_START_BOOL + bool "Set physical address where the kernel is loaded" + depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE + help + This gives the physical address where the kernel is loaded. + + Say N here unless you know what you are doing. + +config PHYSICAL_START + hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL + default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL + default "0x00000000" + +config PHYSICAL_ALIGN + hex + default "0x04000000" if FSL_BOOKE + help + This value puts the alignment restrictions on physical address + where kernel is loaded and run from. Kernel is compiled for an + address which meets above alignment restriction. + +config TASK_SIZE_BOOL + bool "Set custom user task size" + depends on ADVANCED_OPTIONS + 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" if PPC_8xx + default "0xc0000000" + +config CONSISTENT_SIZE_BOOL + bool "Set custom consistent memory pool size" + depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE + help + This option allows you to set the size of the + consistent memory pool. This pool of virtual memory + is used to make consistent memory allocations. + +config CONSISTENT_SIZE + hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL + default "0x00200000" if NOT_COHERENT_CACHE + +config PIN_TLB + bool "Pinned Kernel TLBs (860 ONLY)" + depends on ADVANCED_OPTIONS && 8xx +endmenu + +if PPC64 +config RELOCATABLE + bool "Build a relocatable kernel" + depends on !COMPILE_TEST + select NONSTATIC_KERNEL + help + This builds a kernel image that is capable of running anywhere + in the RMA (real memory area) at any 16k-aligned base address. + The kernel is linked as a position-independent executable (PIE) + and contains dynamic relocations which are processed early + in the bootup process. + + One use is for the kexec on panic case where the recovery kernel + must live at a different physical address than the primary + kernel. + +# This value must have zeroes in the bottom 60 bits otherwise lots will break +config PAGE_OFFSET + hex + default "0xc000000000000000" +config KERNEL_START + hex + default "0xc000000000000000" +config PHYSICAL_START + hex + default "0x00000000" +endif + +config ARCH_RANDOM + def_bool n + +source "net/Kconfig" + +source "drivers/Kconfig" + +source "fs/Kconfig" + +source "arch/powerpc/sysdev/qe_lib/Kconfig" + +source "lib/Kconfig" + +source "arch/powerpc/Kconfig.debug" + +source "security/Kconfig" + +config KEYS_COMPAT + bool + depends on COMPAT && KEYS + default y + +source "crypto/Kconfig" + +config PPC_LIB_RHEAP + bool + +source "arch/powerpc/kvm/Kconfig" |