diff options
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 1241 |
1 files changed, 783 insertions, 458 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 3bf72cd2c8fc..9537a61ebae0 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -1,8 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0 source "arch/powerpc/platforms/Kconfig.cputype" -config PPC32 - bool - default y if !PPC64 +config CC_HAS_ELFV2 + def_bool PPC64 && $(cc-option, -mabi=elfv2) + +config CC_HAS_PREFIXED + def_bool PPC64 && $(cc-option, -mcpu=power10 -mprefixed) + +config CC_HAS_PCREL + # Clang has a bug (https://github.com/llvm/llvm-project/issues/62372) + # where pcrel code is not generated if -msoft-float, -mno-altivec, or + # -mno-vsx options are also given. Without these options, fp/vec + # instructions are generated from regular kernel code. So Clang can't + # do pcrel yet. + def_bool PPC64 && CC_IS_GCC && $(cc-option, -mcpu=power10 -mpcrel) config 32BIT bool @@ -12,30 +23,59 @@ 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 LIVEPATCH_64 + def_bool PPC64 + depends on LIVEPATCH 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 ARCH_MMAP_RND_BITS_MAX + # On Book3S 64, the default virtual address space for 64-bit processes + # is 2^47 (128TB). As a maximum, allow randomisation to consume up to + # 32T of address space (2^45), which should ensure a reasonable gap + # between bottom-up and top-down allocations for applications that + # consume "normal" amounts of address space. Book3S 64 only supports 64K + # and 4K page sizes. + default 29 if PPC_BOOK3S_64 && PPC_64K_PAGES # 29 = 45 (32T) - 16 (64K) + default 33 if PPC_BOOK3S_64 # 33 = 45 (32T) - 12 (4K) + # + # On all other 64-bit platforms (currently only Book3E), the virtual + # address space is 2^46 (64TB). Allow randomisation to consume up to 16T + # of address space (2^44). Only 4K page sizes are supported. + default 32 if 64BIT # 32 = 44 (16T) - 12 (4K) + # + # For 32-bit, use the compat values, as they're the same. + default ARCH_MMAP_RND_COMPAT_BITS_MAX + +config ARCH_MMAP_RND_BITS_MIN + # Allow randomisation to consume up to 1GB of address space (2^30). + default 14 if 64BIT && PPC_64K_PAGES # 14 = 30 (1GB) - 16 (64K) + default 18 if 64BIT # 18 = 30 (1GB) - 12 (4K) + # + # For 32-bit, use the compat values, as they're the same. + default ARCH_MMAP_RND_COMPAT_BITS_MIN + +config ARCH_MMAP_RND_COMPAT_BITS_MAX + # Total virtual address space for 32-bit processes is 2^31 (2GB). + # Allow randomisation to consume up to 512MB of address space (2^29). + default 11 if PPC_256K_PAGES # 11 = 29 (512MB) - 18 (256K) + default 13 if PPC_64K_PAGES # 13 = 29 (512MB) - 16 (64K) + default 15 if PPC_16K_PAGES # 15 = 29 (512MB) - 14 (16K) + default 17 # 17 = 29 (512MB) - 12 (4K) + +config ARCH_MMAP_RND_COMPAT_BITS_MIN + # Total virtual address space for 32-bit processes is 2^31 (2GB). + # Allow randomisation to consume up to 8MB of address space (2^23). + default 5 if PPC_256K_PAGES # 5 = 23 (8MB) - 18 (256K) + default 7 if PPC_64K_PAGES # 7 = 23 (8MB) - 16 (64K) + default 9 if PPC_16K_PAGES # 9 = 23 (8MB) - 14 (16K) + default 11 # 11 = 23 (8MB) - 12 (4K) config NR_IRQS int "Number of virtual interrupt numbers" - range 32 32768 + range 32 1048576 default "512" help This defines the number of virtual interrupt numbers the kernel @@ -43,40 +83,33 @@ config NR_IRQS /proc/interrupts. If you configure your system to have too few, drivers will fail to load or worse - handle with care. -config STACKTRACE_SUPPORT +config NMI_IPI bool + depends on SMP && (DEBUGGER || KEXEC_CORE || HARDLOCKUP_DETECTOR) default y -config HAVE_LATENCYTOP_SUPPORT - def_bool y - -config TRACE_IRQFLAGS_SUPPORT +config PPC_WATCHDOG bool + depends on HARDLOCKUP_DETECTOR_ARCH default y + help + This is a placeholder when the powerpc hardlockup detector + watchdog is selected (arch/powerpc/kernel/watchdog.c). It is + selected via the generic lockup detector menu which is why we + have no standalone config option for it here. -config LOCKDEP_SUPPORT +config STACKTRACE_SUPPORT bool default y -config RWSEM_GENERIC_SPINLOCK - bool - -config RWSEM_XCHGADD_ALGORITHM +config LOCKDEP_SUPPORT bool default y 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 + depends on SMP && PREEMPTION && !PPC_QUEUED_SPINLOCKS config GENERIC_HWEIGHT bool @@ -85,81 +118,240 @@ config GENERIC_HWEIGHT config PPC bool default y + # + # Please keep this list sorted alphabetically. + # + select ARCH_32BIT_OFF_T if PPC32 + select ARCH_NEEDS_DEFER_KASAN if PPC_RADIX_MMU + select ARCH_DISABLE_KASAN_INLINE if PPC_RADIX_MMU + select ARCH_DMA_DEFAULT_COHERENT if !NOT_COHERENT_CACHE + select ARCH_ENABLE_MEMORY_HOTPLUG + select ARCH_ENABLE_MEMORY_HOTREMOVE + select ARCH_HAS_COPY_MC if PPC64 + select ARCH_HAS_CURRENT_STACK_POINTER + select ARCH_HAS_DEBUG_VIRTUAL + select ARCH_HAS_DEBUG_VM_PGTABLE + select ARCH_HAS_DEBUG_WX if STRICT_KERNEL_RWX + select ARCH_HAS_DEVMEM_IS_ALLOWED + select ARCH_HAS_DMA_MAP_DIRECT if PPC_PSERIES + select ARCH_HAS_DMA_OPS if PPC64 + select ARCH_HAS_FORTIFY_SOURCE + select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_HAS_GIGANTIC_PAGE if ARCH_SUPPORTS_HUGETLBFS + select ARCH_HAS_KCOV + select ARCH_HAS_KERNEL_FPU_SUPPORT if PPC64 && PPC_FPU + select ARCH_HAS_MEMBARRIER_CALLBACKS + select ARCH_HAS_MEMBARRIER_SYNC_CORE + select ARCH_HAS_MEMREMAP_COMPAT_ALIGN if PPC_64S_HASH_MMU + select ARCH_HAS_MMIOWB if PPC64 + select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE + select ARCH_HAS_PHYS_TO_DMA + select ARCH_HAS_PMEM_API + select ARCH_HAS_PREEMPT_LAZY + select ARCH_HAS_PTDUMP + select ARCH_HAS_PTE_SPECIAL + select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64 + select ARCH_HAS_SET_MEMORY + select ARCH_HAS_STRICT_KERNEL_RWX if (PPC_BOOK3S || PPC_8xx) && !HIBERNATION + select ARCH_HAS_STRICT_KERNEL_RWX if PPC_85xx && !HIBERNATION && !RANDOMIZE_BASE + select ARCH_HAS_STRICT_MODULE_RWX if ARCH_HAS_STRICT_KERNEL_RWX + select ARCH_HAS_SYSCALL_WRAPPER if !SPU_BASE && !COMPAT + select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST + select ARCH_HAS_UACCESS_FLUSHCACHE + select ARCH_HAS_UBSAN + select ARCH_HAS_VDSO_ARCH_DATA + select ARCH_HAVE_NMI_SAFE_CMPXCHG + select ARCH_HAVE_EXTRA_ELF_NOTES if SPU_BASE + select ARCH_KEEP_MEMBLOCK + select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE if PPC_RADIX_MMU + select ARCH_MIGHT_HAVE_PC_PARPORT + select ARCH_MIGHT_HAVE_PC_SERIO + select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX + select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT + select ARCH_SPLIT_ARG64 if PPC32 + select ARCH_STACKWALK + select ARCH_SUPPORTS_ATOMIC_RMW + select ARCH_SUPPORTS_DEBUG_PAGEALLOC if PPC_BOOK3S || PPC_8xx + select ARCH_SUPPORTS_SCHED_MC if SMP + select ARCH_SUPPORTS_SCHED_SMT if PPC64 && SMP + select SCHED_MC if ARCH_SUPPORTS_SCHED_MC + select ARCH_USE_BUILTIN_BSWAP + select ARCH_USE_CMPXCHG_LOCKREF if PPC64 + select ARCH_USE_MEMTEST + select ARCH_USE_QUEUED_RWLOCKS if PPC_QUEUED_SPINLOCKS + select ARCH_WANT_DEFAULT_BPF_JIT + select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT + select ARCH_WANT_IPC_PARSE_VERSION + select ARCH_WANT_IRQS_OFF_ACTIVATE_MM + select ARCH_WANT_LD_ORPHAN_WARN + select ARCH_WANT_OPTIMIZE_DAX_VMEMMAP if PPC_RADIX_MMU + select ARCH_WANTS_MODULES_DATA_IN_VMALLOC if PPC_BOOK3S_32 || PPC_8xx + select ARCH_WEAK_RELEASE_ACQUIRE select BINFMT_ELF - select OF - select OF_EARLY_FLATTREE - select HAVE_FTRACE_MCOUNT_RECORD + select BUILDTIME_TABLE_SORT + select CLONE_BACKWARDS + select CPUMASK_OFFSTACK if NR_CPUS >= 8192 + select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN + select DMA_OPS_BYPASS if PPC64 + select DYNAMIC_FTRACE if FUNCTION_TRACER + select EDAC_ATOMIC_SCRUB + select EDAC_SUPPORT + select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if ARCH_USING_PATCHABLE_FUNCTION_ENTRY + select FUNCTION_ALIGNMENT_4B + select GENERIC_ATOMIC64 if PPC32 + select GENERIC_CLOCKEVENTS_BROADCAST if SMP + select GENERIC_CMOS_UPDATE + select GENERIC_CPU_AUTOPROBE + select GENERIC_CPU_VULNERABILITIES if PPC_BARRIER_NOSPEC + select GENERIC_EARLY_IOREMAP + select GENERIC_GETTIMEOFDAY + select GENERIC_IDLE_POLL_SETUP + select GENERIC_IOREMAP + select GENERIC_IRQ_SHOW + select GENERIC_IRQ_SHOW_LEVEL + select GENERIC_PCI_IOMAP if PCI + select GENERIC_SMP_IDLE_THREAD + select GENERIC_TIME_VSYSCALL + select HAS_IOPORT if PCI + select HAVE_ARCH_AUDITSYSCALL + select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP + select HAVE_ARCH_HUGE_VMAP if PPC_RADIX_MMU || PPC_8xx + select HAVE_ARCH_JUMP_LABEL + select HAVE_ARCH_JUMP_LABEL_RELATIVE + select HAVE_ARCH_KASAN if PPC32 && PAGE_SHIFT <= 14 + select HAVE_ARCH_KASAN if PPC_RADIX_MMU + select HAVE_ARCH_KASAN if PPC_BOOK3E_64 + select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN + select HAVE_ARCH_KCSAN + select HAVE_ARCH_KFENCE if ARCH_SUPPORTS_DEBUG_PAGEALLOC + select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET + select HAVE_ARCH_WITHIN_STACK_FRAMES + select HAVE_ARCH_KGDB + select HAVE_ARCH_MMAP_RND_BITS + select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT + select HAVE_ARCH_NVRAM_OPS + select HAVE_ARCH_SECCOMP_FILTER + select HAVE_ARCH_TRACEHOOK + select HAVE_ASM_MODVERSIONS + select HAVE_CONTEXT_TRACKING_USER + select HAVE_C_RECORDMCOUNT + select HAVE_DEBUG_KMEMLEAK + select HAVE_DEBUG_STACKOVERFLOW select HAVE_DYNAMIC_FTRACE - select HAVE_FUNCTION_TRACER + select HAVE_DYNAMIC_FTRACE_WITH_ARGS if ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32 + select HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS if PPC_FTRACE_OUT_OF_LINE || (PPC32 && ARCH_USING_PATCHABLE_FUNCTION_ENTRY) + select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS if HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS + select HAVE_DYNAMIC_FTRACE_WITH_REGS if ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32 + select HAVE_EBPF_JIT + select HAVE_EFFICIENT_UNALIGNED_ACCESS + select HAVE_GUP_FAST + select HAVE_FTRACE_GRAPH_FUNC + select HAVE_FTRACE_REGS_HAVING_PT_REGS + select HAVE_FUNCTION_ARG_ACCESS_API + select HAVE_FUNCTION_DESCRIPTORS if PPC64_ELF_ABI_V1 + select HAVE_FUNCTION_ERROR_INJECTION + select HAVE_FUNCTION_GRAPH_FREGS 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_FUNCTION_TRACER if !COMPILE_TEST && (PPC64 || (PPC32 && CC_IS_GCC)) + select HAVE_GCC_PLUGINS + select HAVE_GENERIC_VDSO + select HAVE_HARDLOCKUP_DETECTOR_ARCH if PPC_BOOK3S_64 && SMP + select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI + select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx) select HAVE_IOREMAP_PROT - select HAVE_EFFICIENT_UNALIGNED_ACCESS + select HAVE_IRQ_TIME_ACCOUNTING + select HAVE_KERNEL_GZIP + select HAVE_KERNEL_LZMA if DEFAULT_UIMAGE + select HAVE_KERNEL_LZO if DEFAULT_UIMAGE + select HAVE_KERNEL_XZ if PPC_BOOK3S || 44x select HAVE_KPROBES - select HAVE_ARCH_KGDB + select HAVE_KPROBES_ON_FTRACE 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 USE_GENERIC_SMP_HELPERS if SMP - select HAVE_OPROFILE - select HAVE_DEBUG_KMEMLEAK - select GENERIC_ATOMIC64 if PPC32 - select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE + select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if HAVE_OBJTOOL_MCOUNT && (!ARCH_USING_PATCHABLE_FUNCTION_ENTRY || (!CC_IS_GCC || GCC_VERSION >= 110100)) + select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS + select HAVE_MOD_ARCH_SPECIFIC + select HAVE_NMI if PERF_EVENTS || (PPC64 && PPC_BOOK3S) + select HAVE_OPTPROBES + select HAVE_OBJTOOL if ARCH_USING_PATCHABLE_FUNCTION_ENTRY || MPROFILE_KERNEL || PPC32 + select HAVE_OBJTOOL_MCOUNT if HAVE_OBJTOOL select HAVE_PERF_EVENTS + select HAVE_PERF_EVENTS_NMI if PPC64 + select HAVE_PERF_REGS + select HAVE_PERF_USER_STACK_DUMP + select HAVE_PREEMPT_DYNAMIC_KEY + select HAVE_RETHOOK if KPROBES select HAVE_REGS_AND_STACK_ACCESS_API - select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 - select HAVE_GENERIC_HARDIRQS - select ARCH_WANT_IPC_PARSE_VERSION - select SPARSE_IRQ + select HAVE_RELIABLE_STACKTRACE + select HAVE_RSEQ + select HAVE_SAMPLE_FTRACE_DIRECT if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS + select HAVE_SAMPLE_FTRACE_DIRECT_MULTI if HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS + select HAVE_SETUP_PER_CPU_AREA if PPC64 + select HAVE_SOFTIRQ_ON_OWN_STACK + select HAVE_STACKPROTECTOR if PPC32 && $(cc-option,$(m32-flag) -mstack-protector-guard=tls -mstack-protector-guard-reg=r2 -mstack-protector-guard-offset=0) + select HAVE_STACKPROTECTOR if PPC64 && $(cc-option,$(m64-flag) -mstack-protector-guard=tls -mstack-protector-guard-reg=r13 -mstack-protector-guard-offset=0) + select HAVE_STATIC_CALL if PPC32 + select HAVE_STATIC_CALL_INLINE if PPC32 + select HAVE_SYSCALL_TRACEPOINTS + select HAVE_VIRT_CPU_ACCOUNTING + select HAVE_VIRT_CPU_ACCOUNTING_GEN + select HOTPLUG_SMT if HOTPLUG_CPU + select SMT_NUM_THREADS_DYNAMIC + select HUGETLB_PAGE_SIZE_VARIABLE if PPC_BOOK3S_64 && HUGETLB_PAGE + select IOMMU_HELPER if PPC64 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 if PPC64 - select HAVE_ARCH_JUMP_LABEL - select ARCH_HAVE_NMI_SAFE_CMPXCHG - select GENERIC_SMP_IDLE_THREAD - select GENERIC_CMOS_UPDATE - select GENERIC_TIME_VSYSCALL_OLD - select GENERIC_CLOCKEVENTS - select GENERIC_STRNCPY_FROM_USER - select GENERIC_STRNLEN_USER - select HAVE_MOD_ARCH_SPECIFIC + select KASAN_VMALLOC if KASAN && EXECMEM + select LOCK_MM_AND_FIND_VMA + select MMU_GATHER_PAGE_SIZE + select MMU_GATHER_RCU_TABLE_FREE + select MMU_GATHER_MERGE_VMAS + select MMU_LAZY_TLB_SHOOTDOWN if PPC_BOOK3S_64 select MODULES_USE_ELF_RELA - select CLONE_BACKWARDS - select ARCH_USE_BUILTIN_BSWAP + select NEED_DMA_MAP_STATE if PPC64 || NOT_COHERENT_CACHE + select NEED_PER_CPU_EMBED_FIRST_CHUNK if PPC64 + select NEED_PER_CPU_PAGE_FIRST_CHUNK if PPC64 + select NEED_SG_DMA_LENGTH + select OF + select OF_EARLY_FLATTREE + select OLD_SIGACTION if PPC32 select OLD_SIGSUSPEND - select OLD_SIGACTION if PPC32 - select HAVE_DEBUG_STACKOVERFLOW - -config EARLY_PRINTK + select PCI_DOMAINS if PCI + select PCI_MSI_ARCH_FALLBACKS if PCI_MSI + select PCI_SYSCALL if PCI + select PPC_DAWR if PPC64 + select RTC_LIB + select SPARSE_IRQ + select STRICT_KERNEL_RWX if STRICT_MODULE_RWX + select SYSCTL_EXCEPTION_TRACE + select THREAD_INFO_IN_TASK + select TRACE_IRQFLAGS_SUPPORT + select VDSO_GETRANDOM + # + # Please keep this list sorted alphabetically. + # + +config PPC_BARRIER_NOSPEC bool default y + depends on PPC_BOOK3S_64 || PPC_E500 -config COMPAT +config PPC_HAS_LBARX_LHARX bool - default y if PPC64 - select COMPAT_BINFMT_ELF - select ARCH_WANT_OLD_COMPAT_IPC - select COMPAT_OLD_SIGACTION -config SYSVIPC_COMPAT +config EARLY_PRINTK 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 PANIC_TIMEOUT + int + default 180 + +config COMPAT + bool "Enable support for 32bit binaries" + depends on PPC64 + default y if !CPU_LITTLE_ENDIAN + select ARCH_WANT_OLD_COMPAT_IPC + select COMPAT_OLD_SIGACTION config SCHED_OMIT_FRAME_POINTER bool @@ -167,19 +359,14 @@ config SCHED_OMIT_FRAME_POINTER config ARCH_MAY_HAVE_PC_FDC bool - default !PPC_PSERIES || PCI - -config PPC_OF - def_bool y + default PCI config PPC_UDBG_16550 bool - default n config GENERIC_TBSYNC bool default y if PPC32 && SMP - default n config AUDIT_ARCH bool @@ -190,6 +377,10 @@ config GENERIC_BUG default y depends on BUG +config GENERIC_BUG_RELATIVE_POINTERS + def_bool y + depends on GENERIC_BUG + config SYS_SUPPORTS_APM_EMULATION default y if PMAC_APM_EMU bool @@ -198,16 +389,11 @@ 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 REDBOOT - bool config ARCH_HIBERNATION_POSSIBLE bool @@ -217,36 +403,53 @@ 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 + || 44x -config PPC_DCR_NATIVE - bool - default n +config ARCH_SUSPEND_NONZERO_CPU + def_bool y + depends on PPC_POWERNV || PPC_PSERIES + +config ARCH_HAS_ADD_PAGES + def_bool y + depends on ARCH_ENABLE_MEMORY_HOTPLUG -config PPC_DCR_MMIO +config PPC_DCR_NATIVE bool - default n config PPC_DCR bool - depends on PPC_DCR_NATIVE || PPC_DCR_MMIO + depends on PPC_DCR_NATIVE default y -config PPC_OF_PLATFORM_PCI - bool - depends on PCI - depends on PPC64 # not supported on 32 bits yet - default n +config PPC_PCI_OF_BUS_MAP + bool "Use pci_to_OF_bus_map (deprecated)" + depends on PPC32 + depends on PPC_PMAC || PPC_CHRP + help + This option uses pci_to_OF_bus_map to map OF nodes to PCI devices, which + restricts the system to only having 256 PCI buses. On CHRP it also causes + the "pci-OF-bus-map" property to be created in the device tree. -config ARCH_SUPPORTS_DEBUG_PAGEALLOC - def_bool y + If unsure, say "N". + +config PPC_PCI_BUS_NUM_DOMAIN_DEPENDENT + depends on PPC32 + depends on !PPC_PCI_OF_BUS_MAP + bool "Assign PCI bus numbers from zero individually for each PCI domain" + default y + help + By default on PPC32 were PCI bus numbers unique across all PCI domains. + So system could have only 256 PCI buses independently of available + PCI domains. When this option is enabled then PCI bus numbers are + PCI domain dependent and each PCI controller on own domain can have + 256 PCI buses, like it is on other Linux architectures. config ARCH_SUPPORTS_UPROBES def_bool y config PPC_ADV_DEBUG_REGS bool - depends on 40x || BOOKE + depends on BOOKE default y config PPC_ADV_DEBUG_IACS @@ -271,13 +474,13 @@ config PPC_ADV_DEBUG_DAC_RANGE depends on PPC_ADV_DEBUG_REGS && 44x default y -config PPC_EMULATE_SSTEP +config PPC_DAWR bool - default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT - -source "init/Kconfig" -source "kernel/Kconfig.freezer" +config PGTABLE_LEVELS + int + default 2 if !PPC64 + default 4 source "arch/powerpc/sysdev/Kconfig" source "arch/powerpc/platforms/Kconfig" @@ -287,20 +490,15 @@ menu "Kernel options" config HIGHMEM bool "High memory support" depends on PPC32 + select KMAP_LOCAL -source kernel/Kconfig.hz -source kernel/Kconfig.preempt -source "fs/Kconfig.binfmt" - -config HUGETLB_PAGE_SIZE_VARIABLE - bool - depends on HUGETLB_PAGE - default y +source "kernel/Kconfig.hz" config MATH_EMULATION bool "Math emulation" - depends on 4xx || 8xx || PPC_MPC832x || BOOKE - ---help--- + depends on 44x || PPC_8xx || PPC_MPC832x || BOOKE || PPC_MICROWATT + select PPC_FPU_REGS + 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 @@ -312,93 +510,252 @@ config MATH_EMULATION 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 - default n - ---help--- - Support user-mode Transactional Memory on POWERPC. - -config IOMMU_HELPER - def_bool PPC64 + bool "Transactional Memory support for POWERPC" + depends on PPC_BOOK3S_64 + depends on SMP + select ALTIVEC + select VSX + help + Support user-mode Transactional Memory on POWERPC. -config SWIOTLB - bool "SWIOTLB support" +config PPC_UV + bool "Ultravisor support" + depends on KVM_BOOK3S_HV_POSSIBLE + depends on DEVICE_PRIVATE 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. + help + This option paravirtualizes the kernel to run in POWER platforms that + supports the Protected Execution Facility (PEF). On such platforms, + the ultravisor firmware runs at a privilege level above the + hypervisor. + + If unsure, say "N". + +config LD_HEAD_STUB_CATCH + bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if EXPERT + depends on PPC64 + help + Very large kernels can cause linker branch stubs to be generated by + code in head_64.S, which moves the head text sections out of their + specified location. This option can work around the problem. + + If unsure, say "N". + +config MPROFILE_KERNEL + depends on PPC64_ELF_ABI_V2 && FUNCTION_TRACER + def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-mprofile-kernel.sh $(CC) -mlittle-endian) if CPU_LITTLE_ENDIAN + def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-mprofile-kernel.sh $(CC) -mbig-endian) if CPU_BIG_ENDIAN + +config ARCH_USING_PATCHABLE_FUNCTION_ENTRY + depends on FUNCTION_TRACER && (PPC32 || PPC64_ELF_ABI_V2) + depends on $(cc-option,-fpatchable-function-entry=2) + def_bool y if PPC32 + def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mlittle-endian) if PPC64 && CPU_LITTLE_ENDIAN + def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mbig-endian) if PPC64 && CPU_BIG_ENDIAN + +config PPC_FTRACE_OUT_OF_LINE + def_bool PPC64 && ARCH_USING_PATCHABLE_FUNCTION_ENTRY + select ARCH_WANTS_PRE_LINK_VMLINUX + +config PPC_FTRACE_OUT_OF_LINE_NUM_RESERVE + int "Number of ftrace out-of-line stubs to reserve within .text" + depends on PPC_FTRACE_OUT_OF_LINE + default 32768 + help + Number of stubs to reserve for use by ftrace. This space is + reserved within .text, and is distinct from any additional space + added at the end of .text before the final vmlinux link. Set to + zero to have stubs only be generated at the end of vmlinux (only + if the size of vmlinux is less than 32MB). Set to a higher value + if building vmlinux larger than 48MB. config HOTPLUG_CPU bool "Support for enabling/disabling CPUs" depends on SMP && (PPC_PSERIES || \ - PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC)) - ---help--- + PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE) + 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 INTERRUPT_SANITIZE_REGISTERS + bool "Clear gprs on interrupt arrival" + depends on PPC64 && ARCH_HAS_SYSCALL_WRAPPER + default PPC_BOOK3E_64 || PPC_PSERIES || PPC_POWERNV + help + Reduce the influence of user register state on interrupt handlers and + syscalls through clearing user state from registers before handling + the exception. + +config PPC_QUEUED_SPINLOCKS + bool "Queued spinlocks" if EXPERT + depends on SMP + default PPC_BOOK3S_64 + help + Say Y here to use queued spinlocks which give better scalability and + fairness on large SMP and NUMA systems without harming single threaded + performance. + config ARCH_CPU_PROBE_RELEASE def_bool y depends on HOTPLUG_CPU -config ARCH_ENABLE_MEMORY_HOTPLUG - 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 ARCH_SUPPORTS_KEXEC + def_bool PPC_BOOK3S || PPC_E500 || (44x && !SMP) -config ARCH_HAS_WALK_MEMORY +config ARCH_SUPPORTS_KEXEC_FILE + def_bool PPC64 + +config ARCH_SUPPORTS_KEXEC_PURGATORY def_bool y -config ARCH_ENABLE_MEMORY_HOTREMOVE +config ARCH_SELECTS_KEXEC_FILE + def_bool y + depends on KEXEC_FILE + select KEXEC_ELF + select HAVE_IMA_KEXEC if IMA + +config PPC64_BIG_ENDIAN_ELF_ABI_V2 + # Option is available to BFD, but LLD does not support ELFv1 so this is + # always true there. + prompt "Build big-endian kernel using ELF ABI V2" if LD_IS_BFD && EXPERT def_bool y + depends on PPC64 && CPU_BIG_ENDIAN + depends on CC_HAS_ELFV2 + help + This builds the kernel image using the "Power Architecture 64-Bit ELF + V2 ABI Specification", which has a reduced stack overhead and faster + function calls. This internal kernel ABI option does not affect + userspace compatibility. + + The V2 ABI is standard for 64-bit little-endian, but for big-endian + it is less well tested by kernel and toolchain. However some distros + build userspace this way, and it can produce a functioning kernel. -config KEXEC - bool "kexec system call" - depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) +config RELOCATABLE + bool "Build a relocatable kernel" + depends on PPC64 || (FLATMEM && (44x || PPC_85xx)) + select NONSTATIC_KERNEL 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. + This builds a kernel image that is capable of running at the + location the kernel is loaded at. For ppc32, there is no any + alignment restrictions, and this feature is a superset of + DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use + 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. - The name comes from the similarity to the exec system call. + 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). - 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. It may help to enable device hotplugging - support. As of this writing the exact hardware interface is - strongly in flux, so no good recommendation can be made. +config RANDOMIZE_BASE + bool "Randomize the address of the kernel image" + depends on PPC_85xx && FLATMEM + depends on RELOCATABLE + help + Randomizes the virtual address at which the kernel image is + loaded, as a security feature that deters exploit attempts + relying on knowledge of the location of kernel internals. + + If unsure, say Y. -config CRASH_DUMP - bool "Build a kdump crash kernel" - depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) - select RELOCATABLE if PPC64 || 44x - select DYNAMIC_MEMSTART if FSL_BOOKE +config RELOCATABLE_TEST + bool "Test relocatable kernel" + depends on (PPC64 && RELOCATABLE) 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. + This runs the relocatable kernel at the address it was initially + loaded at, which tends to be non-zero and therefore test the + relocation code. + +config ARCH_SUPPORTS_CRASH_DUMP + def_bool PPC64 || PPC_BOOK3S_32 || PPC_85xx || (44x && !SMP) + +config ARCH_DEFAULT_CRASH_DUMP + bool + default y if !PPC_BOOK3S_32 + +config ARCH_SELECTS_CRASH_DUMP + def_bool y + depends on CRASH_DUMP + select RELOCATABLE if PPC64 || 44x || PPC_85xx + +config ARCH_SUPPORTS_CRASH_HOTPLUG + def_bool y + depends on PPC64 + +config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION + def_bool CRASH_RESERVE config FA_DUMP bool "Firmware-assisted dump" - depends on PPC64 && PPC_RTAS && CRASH_DUMP + depends on CRASH_DUMP && PPC64 && (PPC_RTAS || PPC_POWERNV) 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 + instead firmware assists in booting the capture 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" + If unsure, say "y". Only special kernels like petitboot may + need to say "N" here. + +config PRESERVE_FA_DUMP + bool "Preserve Firmware-assisted dump" + depends on PPC64 && PPC_POWERNV && !FA_DUMP + help + On a kernel with FA_DUMP disabled, this option helps to preserve + crash data from a previously crash'ed kernel. Useful when the next + memory preserving kernel boot would process this crash data. + Petitboot kernel is the typical usecase for this option. + +config OPAL_CORE + bool "Export OPAL memory as /sys/firmware/opal/core" + depends on PPC64 && PPC_POWERNV + help + This option uses the MPIPL support in firmware to provide an + ELF core of OPAL memory after a crash. The ELF core is exported + as /sys/firmware/opal/core file which is helpful in debugging + OPAL crashes using GDB. config IRQ_ALL_CPUS bool "Distribute interrupts on all CPUs by default" - depends on SMP && !MV64360 + 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 @@ -406,15 +763,26 @@ config IRQ_ALL_CPUS reported with SMP Power Macintoshes with this option enabled. config NUMA - bool "NUMA support" - depends on PPC64 - default y if SMP && PPC_PSERIES + bool "NUMA Memory Allocation and Scheduler Support" + depends on PPC64 && SMP + default y if PPC_PSERIES || PPC_POWERNV + select USE_PERCPU_NUMA_NODE_ID + help + Enable NUMA (Non-Uniform Memory Access) support. + + The kernel will try to allocate memory used by a CPU on the + local memory controller of the CPU and add some more + NUMA awareness to the kernel. config NODES_SHIFT int default "8" if PPC64 default "4" - depends on NEED_MULTIPLE_NODES + depends on NUMA + +config HAVE_MEMORYLESS_NODES + def_bool y + depends on NUMA config ARCH_SELECT_MEMORY_MODEL def_bool y @@ -431,45 +799,22 @@ config ARCH_SPARSEMEM_ENABLE config ARCH_SPARSEMEM_DEFAULT def_bool y - depends on (SMP && PPC_PSERIES) || PPC_PS3 - -config SYS_SUPPORTS_HUGETLBFS - bool + depends on PPC_BOOK3S_64 -source "mm/Kconfig" +config ILLEGAL_POINTER_VALUE + hex + # This is roughly half way between the top of user space and the bottom + # of kernel space, which seems about as good as we can get. + default 0x5deadbeef0000000 if PPC64 + default 0 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_64K_PAGES if PPC_BOOK3S_64 default PPC_4K_PAGES help Select the kernel logical page size. Increasing the page size @@ -495,95 +840,179 @@ choice config PPC_4K_PAGES bool "4k page size" + select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64 + select HAVE_PAGE_SIZE_4KB config PPC_16K_PAGES - bool "16k page size" if 44x + bool "16k page size" + depends on 44x || PPC_8xx + select HAVE_PAGE_SIZE_16KB config PPC_64K_PAGES - bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64 - select PPC_HAS_HASH_64K if PPC_STD_MMU_64 + bool "64k page size" + depends on 44x || PPC_BOOK3S_64 + select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64 + select HAVE_PAGE_SIZE_64KB config PPC_256K_PAGES - bool "256k page size" if 44x - depends on !STDBINUTILS + bool "256k page size (Requires non-standard binutils settings)" + depends on 44x && !PPC_47x + select HAVE_PAGE_SIZE_256KB 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. + The kernel will only be able to run applications that have been + compiled with '-zmax-page-size' set to 256K (the default is 64K) using + binutils later than 2.17.50.0.3, or by patching the ELF_MAXPAGESIZE + definition from 0x10000 to 0x40000 in older versions. 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. +config THREAD_SHIFT + int "Thread shift" if EXPERT + range 13 15 + default "15" if PPC_256K_PAGES + default "15" if PPC_PSERIES || PPC_POWERNV + default "14" if PPC64 + default "13" + help + Used to define the stack size. The default is almost always what you + want. Only change this if you know what you are doing. + +config DATA_SHIFT_BOOL + bool "Set custom data alignment" + depends on ADVANCED_OPTIONS + depends on STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE + depends on (PPC_8xx && !PIN_TLB_DATA && (!STRICT_KERNEL_RWX || !PIN_TLB_TEXT)) || \ + PPC_BOOK3S_32 || PPC_85xx + help + This option allows you to set the kernel data alignment. When + RAM is mapped by blocks, the alignment needs to fit the size and + number of possible blocks. The default should be OK for most configs. + + Say N here unless you know what you are doing. + +config DATA_SHIFT + int "Data shift" if DATA_SHIFT_BOOL + default 24 if STRICT_KERNEL_RWX && PPC64 + range 17 28 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_BOOK3S_32 + range 14 23 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx + range 20 24 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_85xx + default 22 if STRICT_KERNEL_RWX && PPC_BOOK3S_32 + default 18 if (DEBUG_PAGEALLOC || KFENCE) && PPC_BOOK3S_32 + default 23 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx && \ + (PIN_TLB_DATA || PIN_TLB_TEXT) + default 19 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx + default 24 if STRICT_KERNEL_RWX && PPC_85xx + default PAGE_SHIFT + help + On Book3S 32 (603+), DBATs are used to map kernel text and rodata RO. + Smaller is the alignment, greater is the number of necessary DBATs. + + On 8xx, large pages (16kb or 512kb or 8M) are used to map kernel + linear memory. Aligning to 8M reduces TLB misses as only 8M pages + are used in that case. If PIN_TLB is selected, it must be aligned + to 8M as 8M pages will be pinned. + +config ARCH_FORCE_MAX_ORDER + int "Order of maximal physically contiguous allocations" + range 7 8 if PPC64 && PPC_64K_PAGES + default "8" if PPC64 && PPC_64K_PAGES + range 12 12 if PPC64 && !PPC_64K_PAGES + default "12" if PPC64 && !PPC_64K_PAGES + range 8 10 if PPC32 && PPC_16K_PAGES + default "8" if PPC32 && PPC_16K_PAGES + range 6 10 if PPC32 && PPC_64K_PAGES + default "6" if PPC32 && PPC_64K_PAGES + range 4 10 if PPC32 && PPC_256K_PAGES + default "4" if PPC32 && PPC_256K_PAGES + range 10 12 + default "10" + help + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_PAGE_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. 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. + Don't change if unsure. + config PPC_SUBPAGE_PROT - bool "Support setting protections for 4k subpages" - depends on PPC_STD_MMU_64 && PPC_64K_PAGES + bool "Support setting protections for 4k subpages (subpage_prot syscall)" + default n + depends on PPC_64S_HASH_MMU && PPC_64K_PAGES help - This option adds support for a system call to allow user programs + This option adds support for 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 SCHED_SMT - bool "SMT (Hyperthreading) scheduler support" - depends on PPC64 && SMP + If unsure, say N here. + +config PPC_PROT_SAO_LPAR + bool "Support PROT_SAO mappings in LPARs" + depends on PPC_BOOK3S_64 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. + This option adds support for PROT_SAO mappings from userspace + inside LPARs on supported CPUs. + + This may cause issues when performing guest migration from + a CPU that supports SAO to one that does not. + + If unsure, say N here. + +config PPC_COPRO_BASE + bool config PPC_DENORMALISATION bool "PowerPC denormalisation exception handling" depends on PPC_BOOK3S_64 - default "n" - ---help--- + 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" + default "" 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. +choice + prompt "Kernel command line type" + depends on CMDLINE != "" + default CMDLINE_FROM_BOOTLOADER + +config CMDLINE_FROM_BOOTLOADER + bool "Use bootloader kernel arguments if available" + help + Uses the command-line options passed by the boot loader. If + the boot loader doesn't provide any, the default kernel command + string provided in CMDLINE will be used. + +config CMDLINE_EXTEND + bool "Extend bootloader kernel arguments" + help + The command-line arguments provided by the boot loader will be + appended to the default kernel command string. + +config CMDLINE_FORCE + bool "Always use the default kernel command string" + 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. + +endchoice + config EXTRA_TARGETS string "Additional default image types" help @@ -601,24 +1030,51 @@ config ARCH_WANTS_FREEZER_CONTROL def_bool y depends on ADB_PMU -source kernel/power/Kconfig +source "kernel/power/Kconfig" -config SECCOMP - bool "Enable seccomp to safely compute untrusted bytecode" - depends on PROC_FS - default y +config PPC_MEM_KEYS + prompt "PowerPC Memory Protection Keys" + def_bool y + depends on PPC_BOOK3S_64 + depends on PPC_64S_HASH_MMU + select ARCH_USES_HIGH_VMA_FLAGS + select ARCH_HAS_PKEYS + help + Memory Protection Keys provides a mechanism for enforcing + page-based protections, but without requiring modification of the + page tables when an application changes protection domains. + + For details, see Documentation/core-api/protection-keys.rst + + If unsure, say y. + +config ARCH_PKEY_BITS + int + default 5 + +config PPC_SECURE_BOOT + prompt "Enable secure boot support" + bool + depends on PPC_POWERNV || PPC_PSERIES + depends on IMA_ARCH_POLICY + imply IMA_SECURE_AND_OR_TRUSTED_BOOT + select PSERIES_PLPKS if PPC_PSERIES 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. + Systems with firmware secure boot enabled need to define security + policies to extend secure boot to the OS. This config allows a user + to enable OS secure boot on systems that have firmware support for + it. If in doubt say N. - If unsure, say Y. Only embedded should say N here. +config PPC_SECVAR_SYSFS + bool "Enable sysfs interface for POWER secure variables" + default y + depends on PPC_SECURE_BOOT + depends on SYSFS + help + POWER secure variables are managed and controlled by firmware. + These variables are exposed to userspace via sysfs to enable + read/write operations on these variables. Say Y if you have + secure boot enabled and want to expose variables to userspace. endmenu @@ -639,16 +1095,6 @@ config ISA 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 @@ -657,11 +1103,7 @@ config GENERIC_ISA_DMA config PPC_INDIRECT_PCI bool depends on PCI - default y if 40x || 44x - default n - -config EISA - bool + default y if 44x config SBUS bool @@ -670,7 +1112,8 @@ config FSL_SOC bool config FSL_PCI - bool + bool + select ARCH_HAS_DMA_SET_MASK select PPC_INDIRECT_PCI select PCI_QUIRKS @@ -685,110 +1128,37 @@ config FSL_PMC config PPC4xx_CPM bool default y - depends on SUSPEND && (44x || 40x) + depends on SUSPEND && 44x 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_IFC - bool - depends on FSL_SOC - 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 ARCH_SUPPORTS_MSI - 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 - bool "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 && HAS_RAPIDIO + depends on RAPIDIO = y && HAVE_RAPIDIO default "n" - ---help--- + 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 @@ -824,7 +1194,7 @@ config LOWMEM_SIZE config LOWMEM_CAM_NUM_BOOL bool "Set number of CAMs to use to map low memory" - depends on ADVANCED_OPTIONS && FSL_BOOKE + depends on ADVANCED_OPTIONS && PPC_85xx 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 @@ -835,51 +1205,31 @@ config LOWMEM_CAM_NUM_BOOL Say N here unless you know what you are doing. config LOWMEM_CAM_NUM - depends on FSL_BOOKE + depends on PPC_85xx int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL - default 3 + default 3 if !STRICT_KERNEL_RWX + default 9 if DATA_SHIFT >= 24 + default 12 if DATA_SHIFT >= 22 + default 15 config DYNAMIC_MEMSTART bool "Enable page aligned dynamic load address for kernel" - depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x) + depends on ADVANCED_OPTIONS && FLATMEM && (PPC_85xx || 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 + 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 + 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 - 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 @@ -913,7 +1263,7 @@ config KERNEL_START config PHYSICAL_START_BOOL bool "Set physical address where the kernel is loaded" - depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE + depends on ADVANCED_OPTIONS && FLATMEM && PPC_85xx help This gives the physical address where the kernel is loaded. @@ -921,12 +1271,12 @@ config PHYSICAL_START_BOOL 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 "0x02000000" if PPC_BOOK3S && CRASH_DUMP && !NONSTATIC_KERNEL default "0x00000000" config PHYSICAL_ALIGN hex - default "0x04000000" if FSL_BOOKE + default "0x04000000" if PPC_85xx help This value puts the alignment restrictions on physical address where kernel is loaded and run from. Kernel is compiled for an @@ -945,40 +1295,39 @@ config TASK_SIZE_BOOL config TASK_SIZE hex "Size of user task space" if TASK_SIZE_BOOL default "0x80000000" if PPC_8xx + default "0xb0000000" if PPC_BOOK3S_32 && EXECMEM default "0xc0000000" -config CONSISTENT_SIZE_BOOL - bool "Set custom consistent memory pool size" - depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE +config MODULES_SIZE_BOOL + bool "Set custom size for modules/execmem area" + depends on EXECMEM && ADVANCED_OPTIONS 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. + This option allows you to set the size of kernel virtual address + space dedicated for modules/execmem. + For the time being it is only for 8xx and book3s/32. Other + platform share it with vmalloc space. -config CONSISTENT_SIZE - hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL - default "0x00200000" if NOT_COHERENT_CACHE + Say N here unless you know what you are doing. + +config MODULES_SIZE + int "Size of modules/execmem area (In Mbytes)" if MODULES_SIZE_BOOL + range 1 256 if EXECMEM + default 64 if EXECMEM && PPC_BOOK3S_32 + default 32 if EXECMEM && PPC_8xx + default 0 -config PIN_TLB - bool "Pinned Kernel TLBs (860 ONLY)" - depends on ADVANCED_OPTIONS && 8xx endmenu -if PPC64 -config RELOCATABLE - bool "Build a relocatable kernel" - select NONSTATIC_KERNEL +config PPC64_PROC_SYSTEMCFG + def_bool y + depends on PPC64 && PROC_FS 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 option enables the presence of /proc/ppc64/systemcfg through + which the systemcfg page can be accessed. + This interface only exists for backwards-compatibility. +if PPC64 +# This value must have zeroes in the bottom 60 bits otherwise lots will break config PAGE_OFFSET hex default "0xc000000000000000" @@ -990,33 +1339,9 @@ config PHYSICAL_START default "0x00000000" endif -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_CLOCK - bool - default n - select HAVE_CLK - config PPC_LIB_RHEAP bool source "arch/powerpc/kvm/Kconfig" + +source "kernel/livepatch/Kconfig" |