646 lines
17 KiB
Plaintext
646 lines
17 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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config SW64
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bool
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default y
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select ACPI
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select ACPI_MCFG if (ACPI && PCI)
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select ACPI_REDUCED_HARDWARE_ONLY
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select ARCH_ATOMIC
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select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
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select ARCH_HAS_ELF_RANDOMIZE
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select ARCH_HAS_PHYS_TO_DMA
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select ARCH_HAS_PMEM_API
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select ARCH_HAS_PTE_DEVMAP
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select ARCH_HAS_PTE_SPECIAL
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select ARCH_HAS_SG_CHAIN
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select ARCH_HAS_UACCESS_FLUSHCACHE
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select ARCH_HAS_VM_GET_PAGE_PROT
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select ARCH_HAS_ZONE_DEVICE
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select ARCH_INLINE_READ_LOCK
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select ARCH_INLINE_READ_LOCK_BH
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select ARCH_INLINE_READ_LOCK_IRQ
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select ARCH_INLINE_READ_LOCK_IRQSAVE
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select ARCH_INLINE_READ_UNLOCK
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select ARCH_INLINE_READ_UNLOCK_BH
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select ARCH_INLINE_READ_UNLOCK_IRQ
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select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
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select ARCH_INLINE_SPIN_LOCK
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select ARCH_INLINE_SPIN_LOCK_BH
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select ARCH_INLINE_SPIN_LOCK_IRQ
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select ARCH_INLINE_SPIN_LOCK_IRQSAVE
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select ARCH_INLINE_SPIN_TRYLOCK
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select ARCH_INLINE_SPIN_TRYLOCK_BH
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select ARCH_INLINE_SPIN_UNLOCK
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select ARCH_INLINE_SPIN_UNLOCK_BH
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select ARCH_INLINE_SPIN_UNLOCK_IRQ
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select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
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select ARCH_INLINE_WRITE_LOCK
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select ARCH_INLINE_WRITE_LOCK_BH
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select ARCH_INLINE_WRITE_LOCK_IRQ
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select ARCH_INLINE_WRITE_LOCK_IRQSAVE
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select ARCH_INLINE_WRITE_UNLOCK
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select ARCH_INLINE_WRITE_UNLOCK_BH
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select ARCH_INLINE_WRITE_UNLOCK_IRQ
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select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
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select ARCH_NO_PREEMPT
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select ARCH_SUPPORTS_ACPI
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select ARCH_SUPPORTS_ATOMIC_RMW
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select ARCH_SUPPORTS_NUMA_BALANCING
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select ARCH_SUPPORTS_UPROBES
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select ARCH_USE_CMPXCHG_LOCKREF
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select ARCH_USE_QUEUED_RWLOCKS
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select ARCH_USE_QUEUED_SPINLOCKS
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select ARCH_WANT_DEFAULT_BPF_JIT
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select ARCH_WANT_FRAME_POINTERS
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select ARCH_WANT_IPC_PARSE_VERSION
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select AUDIT_ARCH
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select COMMON_CLK
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select DMA_OPS if PCI
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select GENERIC_CLOCKEVENTS
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select GENERIC_IRQ_LEGACY
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select GENERIC_IRQ_MIGRATION if SMP
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select GENERIC_IRQ_PROBE
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select GENERIC_IRQ_SHOW
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select GENERIC_PCI_IOMAP if PCI
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select GENERIC_SMP_IDLE_THREAD
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select GENERIC_STRNCPY_FROM_USER
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select GENERIC_STRNLEN_USER
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select GENERIC_TIME_VSYSCALL
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select HANDLE_DOMAIN_IRQ
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select HARDIRQS_SW_RESEND
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select HAVE_ARCH_AUDITSYSCALL
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select HAVE_ARCH_JUMP_LABEL
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select HAVE_ARCH_KGDB
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select HAVE_ARCH_SECCOMP_FILTER
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select HAVE_ARCH_TRACEHOOK
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select HAVE_ARCH_TRANSPARENT_HUGEPAGE
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select HAVE_ASM_MODVERSIONS
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select HAVE_C_RECORDMCOUNT
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select HAVE_DEBUG_BUGVERBOSE
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select HAVE_DYNAMIC_FTRACE
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select HAVE_DYNAMIC_FTRACE_WITH_REGS
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select HAVE_EBPF_JIT
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select HAVE_FAST_GUP
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_FUNCTION_TRACER
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select HAVE_IDE
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select HAVE_KPROBES
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select HAVE_KPROBES_ON_FTRACE
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select HAVE_KRETPROBES
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select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
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select HAVE_MEMBLOCK
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select HAVE_MEMBLOCK_NODE_MAP
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select HAVE_MOD_ARCH_SPECIFIC
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select HAVE_PCI
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select HAVE_PCSPKR_PLATFORM
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select HAVE_PERF_EVENTS
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select HAVE_PERF_REGS
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select HAVE_PERF_USER_STACK_DUMP
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select HAVE_REGS_AND_STACK_ACCESS_API
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select HAVE_RELIABLE_STACKTRACE if STACKTRACE
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select HAVE_RSEQ
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select HAVE_SYSCALL_TRACEPOINTS
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select IRQ_FORCED_THREADING
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select LOCK_MM_AND_FIND_VMA
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select MEMORY_HOTPLUG_SPARSE if MEMORY_HOTPLUG
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select MODULES_USE_ELF_RELA
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select NO_BOOTMEM
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select OF_EARLY_FLATTREE if OF
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select OLD_SIGSUSPEND
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select PCI_DOMAINS_GENERIC if PCI
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select PCI_ECAM if (ACPI && PCI)
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select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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select PCI_SW64 if PCI
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select SET_FS
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select SPARSEMEM_EXTREME if SPARSEMEM
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select SW64_IRQ_CPU
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select SW64_IRQ_MSI if PCI_MSI
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select SW64_IRQ_MSI_VT if PCI_MSI
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select SW64_TIMER
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select SWIOTLB
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select THREAD_INFO_IN_TASK
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config LOCKDEP_SUPPORT
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def_bool y
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config 64BIT
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def_bool y
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config MMU
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bool
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default y
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config PGTABLE_LEVELS
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int
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default 4
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config ARCH_SUPPORTS_HUGETLBFS
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def_bool y
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config ARCH_ENABLE_MEMORY_HOTPLUG
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bool
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default y
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config ARCH_ENABLE_MEMORY_HOTREMOVE
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bool
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default y
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config ARCH_HAS_ILOG2_U32
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bool
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default n
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config ARCH_HAS_ILOG2_U64
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bool
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default n
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config GENERIC_GPIO
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bool
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config ZONE_DMA32
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bool
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default y
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config NEED_DMA_MAP_STATE
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def_bool y
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config NEED_SG_DMA_LENGTH
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def_bool y
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config ARCH_WANT_HUGE_PMD_SHARE
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def_bool y
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config GENERIC_ISA_DMA
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bool
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default y
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config NONCACHE_PAGE
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bool
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depends on SW64
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default y
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config AUDIT_ARCH
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bool
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config SYS_HAS_EARLY_PRINTK
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bool
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config HAVE_CSRRW
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bool
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menu "System setup"
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menu "Machine Configuration"
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choice
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prompt "Subarchitecture Configuration"
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config SUBARCH_C3B
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bool "C3B"
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config SUBARCH_C4
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bool "C4"
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select HAVE_CSRRW
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select GENERIC_SCHED_CLOCK
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endchoice
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choice
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prompt "Uncore Configuration"
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config UNCORE_XUELANG
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bool "Uncore for C3B"
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depends on SUBARCH_C3B
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help
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Sunway cpu uncore for C3B
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config UNCORE_JUNZHANG
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bool "Uncore for C4"
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depends on SUBARCH_C4
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help
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Sunway cpu uncore for C4
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endchoice
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choice
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prompt "Platform Type"
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config PLATFORM_XUELANG
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bool "Xuelang"
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depends on UNCORE_XUELANG
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select SPARSE_IRQ
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select SYS_HAS_EARLY_PRINTK
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select SW64_INTC_V2
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select I2C_SUNWAY if I2C
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help
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Sunway board chipset for C3B
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config PLATFORM_JUNZHANG
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bool "JunZhang"
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depends on UNCORE_JUNZHANG
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select SPARSE_IRQ
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select SYS_HAS_EARLY_PRINTK
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help
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Sunway board chipset for C4
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endchoice
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config MIGHT_HAVE_PC_SERIO
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bool "Use PC serio device i8042"
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select ARCH_MIGHT_HAVE_PC_SERIO
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default n
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endmenu
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menu "CPU Power Management"
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source "drivers/cpufreq/Kconfig"
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config SW64_CPUAUTOPLUG
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bool "sw64 CPU Autoplug interface"
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depends on SW64_CPUFREQ
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default y
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help
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Turns on the interface for SW64_CPU CPUAUTOPLUG.
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endmenu
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# clear all implied options (don't want default values for those):
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# Most of these machines have ISA slots; not exactly sure which don't,
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# and this doesn't activate hordes of code, so do it always.
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config ISA
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bool
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default y
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help
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Find out whether you have ISA slots on your motherboard. ISA is the
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name of a bus system, i.e. the way the CPU talks to the other stuff
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inside your box. Other bus systems are PCI, EISA, MicroChannel
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(MCA) or VESA. ISA is an older system, now being displaced by PCI;
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newer boards don't support it. If you have ISA, say Y, otherwise N.
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config ISA_DMA_API
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bool
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default y
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config PCI_DOMAINS
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def_bool PCI
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config PCI_DOMAINS_GENERIC
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def_bool PCI
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config PCI_SYSCALL
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def_bool PCI
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config IOMMU_HELPER
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def_bool PCI
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config PHYSICAL_START
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hex "Physical address where the kernel starts"
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default "0x900000"
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help
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This gives the physical address where the kernel starts, and it
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is 0x10000 before _text. If you plan to use kernel for capturing
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the crash dump change this value to start of the reserved region
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(the "X" value as specified in the "crashkernel=YM@XM" command
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line boot parameter passed to the panic-ed kernel).
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config KEXEC
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bool "Kexec system call (EXPERIMENTAL)"
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select KEXEC_CORE
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help
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kexec is a system call that implements the ability to shutdown your
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current kernel, and to start another kernel. It is like a reboot
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but it is independent of the system firmware. And like a reboot
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you can start any kernel with it, not just Linux.
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The name comes from the similarity to the exec system call.
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It is an ongoing process to be certain the hardware in a machine
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is properly shutdown, so do not be surprised if this code does not
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initially work for you. As of this writing the exact hardware
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interface is strongly in flux, so no good recommendation can be
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made.
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config CRASH_DUMP
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bool "Kernel crash dumps (EXPERIMENTAL)"
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help
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Generate crash dump after being started by kexec.
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This should be normally only set in special crash dump kernels
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which are loaded in the main kernel with kexec-tools into
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a specially reserved region and then later executed after
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a crash by kdump/kexec. The crash dump kernel must be compiled
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to a memory address not used by the main kernel or firmware using
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PHYSICAL_START.
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config SECCOMP
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def_bool y
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prompt "Enable seccomp to safely compute untrusted bytecode"
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help
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This kernel feature is useful for number crunching applications
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that may need to compute untrusted bytecode during their
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execution. By using pipes or other transports made available to
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the process as file descriptors supporting the read/write
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syscalls, it's possible to isolate those applications in
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their own address space using seccomp. Once seccomp is
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enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
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and the task is only allowed to execute a few safe syscalls
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defined by each seccomp mode.
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If unsure, say Y. Only embedded should say N here.
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config GENERIC_HWEIGHT
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bool
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default y
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config SMP
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bool "Symmetric multi-processing support"
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depends on SW64
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select USE_GENERIC_SMP_HELPERS
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help
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, like most personal computers, say N. If
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you have a system with more than one CPU, say Y.
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If you say N here, the kernel will run on single and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on many, but not all,
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singleprocessor machines. On a singleprocessor machine, the kernel
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will run faster if you say N here.
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See also the SMP-HOWTO available at
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<http://www.tldp.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config ARCH_PROC_KCORE_TEXT
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def_bool y
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config HAVE_DEC_LOCK
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bool "Use arch-specified dec_and_lock"
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depends on SMP && !NUMA
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default y
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config TRACE_IRQFLAGS_SUPPORT
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def_bool y
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config ARCH_SUPPORTS_UPROBES
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def_bool y
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config SCHED_SMT
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bool "SMT scheduler support"
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depends on SMP && SUBARCH_C4
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help
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Improves the CPU scheduler's decision making when dealing with
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MultiThreading at a cost of slightly increased overhead in some
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places. If unsure say N here.
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config NR_CPUS
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int "Maximum number of CPUs (2-256)"
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range 2 256
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depends on SMP
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default "64" if UNCORE_XUELANG
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help
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SW6 support can handle a maximum of 256 CPUs.
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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs"
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depends on SMP
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help
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Say Y here to allow turning CPUs off and on. CPUs can be
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controlled through /sys/devices/system/cpu.
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( Note: power management support will enable this option
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automatically on SMP systems. )
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Say N if you want to disable CPU hotplug.
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config ARCH_SPARSEMEM_ENABLE
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bool "Sparse Memory Support"
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depends on SMP
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select SPARSEMEM_VMEMMAP_ENABLE
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source "kernel/livepatch/Kconfig"
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config NUMA
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bool "NUMA Support"
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depends on SMP && !FLATMEM
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select ACPI_NUMA if ACPI
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help
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Say Y to compile the kernel to support NUMA (Non-Uniform Memory
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Access). This option is for configuring high-end multiprocessor
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server machines. If in doubt, say N.
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config USE_PERCPU_NUMA_NODE_ID
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def_bool y
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depends on NUMA
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config NODES_SHIFT
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int
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default "7"
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depends on NUMA
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config RELOCATABLE
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bool "Relocatable kernel"
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help
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This builds a kernel image that retains relocation information
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so it can be loaded someplace besides the default 1MB.
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The relocations make the kernel binary about 15% larger,
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but are discarded at runtime
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config RELOCATION_TABLE_SIZE
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hex "Relocation table size"
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depends on RELOCATABLE
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range 0x0 0x01000000
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default "0x80000"
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help
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A table of relocation data will be appended to the kernel binary
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and parsed at boot to fix up the relocated kernel.
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This option allows the amount of space reserved for the table to be
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adjusted, although the default of 1Mb should be ok in most cases.
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The build will fail and a valid size suggested if this is too small.
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If unsure, leave at the default value.
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config RANDOMIZE_BASE
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bool "Randomize the address of the kernel image"
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depends on RELOCATABLE
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help
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Randomizes the physical and virtual address at which the
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kernel image is loaded, as a security feature that
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deters exploit attempts relying on knowledge of the location
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of kernel internals.
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Entropy is generated using any coprocessor 0 registers available.
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The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
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If unsure, say N.
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config RANDOMIZE_BASE_MAX_OFFSET
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hex "Maximum kASLR offset" if EXPERT
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depends on RANDOMIZE_BASE
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range 0x0 0x20000000
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default "0x10000000"
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help
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When kASLR is active, this provides the maximum offset that will
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be applied to the kernel image. It should be set according to the
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amount of physical RAM available in the target system minus
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PHYSICAL_START and must be a power of 2.
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This is limited by the size of KTEXT space, 512Mb. The default is 256MB.
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config HZ
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int "HZ of the short timer"
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default 500
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source "drivers/eisa/Kconfig"
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source "drivers/pcmcia/Kconfig"
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source "fs/Kconfig.binfmt"
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source "arch/sw_64/lib/Kconfig"
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endmenu
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menu "Boot options"
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config USE_OF
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bool "Flattened Device Tree support"
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select OF
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select IRQ_DOMAIN
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help
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Include support for flattened device tree machine descriptions.
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config BUILTIN_DTB
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bool "Embed DTB in kernel image"
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depends on OF
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default n
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help
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Embeds a device tree binary in the kernel image.
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config BUILTIN_DTB_NAME
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string "Built in DTB"
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depends on BUILTIN_DTB
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help
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Set the name of the DTB to embed, leave blank to pick one
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automatically based on kernel configuration.
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config EFI
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bool "UEFI runtime support"
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select UCS2_STRING
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select EFI_RUNTIME_WRAPPERS
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default y
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help
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This option provides support for runtime services provided
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by UEFI firmware (such as non-volatile variables, realtime
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clock, and platform reset). A UEFI stub is also provided to
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allow the kernel to be booted as an EFI application. This
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is only useful on systems that have UEFI firmware.
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config DMI
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bool "Enable support for SMBIOS (DMI) tables"
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depends on EFI
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default y
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help
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This enables SMBIOS/DMI feature for systems.
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This option is only useful on systems that have UEFI firmware.
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However, even with this option, the resultant kernel should
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continue to boot on existing non-UEFI platforms.
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|
|
NOTE: This does *NOT* enable or encourage the use of DMI quirks,
|
|
i.e., the practice of identifying the platform via DMI to
|
|
decide whether certain workarounds for buggy hardware and/or
|
|
firmware need to be enabled. This would require the DMI subsystem
|
|
to be enabled much earlier than we do on ARM, which is non-trivial.
|
|
|
|
config CMDLINE_BOOL
|
|
bool "Built-in kernel command line"
|
|
help
|
|
Allow for specifying boot arguments to the kernel at
|
|
build time. On some systems (e.g. embedded ones), it is
|
|
necessary or convenient to provide some or all of the
|
|
kernel boot arguments with the kernel itself (that is,
|
|
to not rely on the boot loader to provide them.)
|
|
|
|
To compile command line arguments into the kernel,
|
|
set this option to 'Y', then fill in the
|
|
boot arguments in CONFIG_CMDLINE.
|
|
|
|
Systems with fully functional boot loaders (i.e. non-embedded)
|
|
should leave this option set to 'N'.
|
|
|
|
config CMDLINE
|
|
string "Built-in kernel command string"
|
|
depends on CMDLINE_BOOL
|
|
default ""
|
|
help
|
|
Enter arguments here that should be compiled into the kernel
|
|
image and used at boot time. If the boot loader provides a
|
|
command line at boot time, it is appended to this string to
|
|
form the full kernel command line, when the system boots.
|
|
|
|
However, you can use the CONFIG_CMDLINE_OVERRIDE option to
|
|
change this behavior.
|
|
|
|
In most cases, the command line (whether built-in or provided
|
|
by the boot loader) should specify the device for the root
|
|
file system.
|
|
|
|
config CMDLINE_OVERRIDE
|
|
bool "Built-in command line overrides boot loader arguments"
|
|
depends on CMDLINE_BOOL
|
|
help
|
|
Set this option to 'Y' to have the kernel ignore the boot loader
|
|
command line, and use ONLY the built-in command line.
|
|
|
|
This is used to work around broken boot loaders. This should
|
|
be set to 'N' under normal conditions.
|
|
|
|
config FORCE_MAX_ZONEORDER
|
|
int
|
|
default "16" if (HUGETLB_PAGE)
|
|
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.
|
|
|
|
We make sure that we can allocate up to a HugePage size for each configuration.
|
|
Hence we have :
|
|
MAX_ORDER = (PMD_SHIFT - PAGE_SHIFT) + 1 => PAGE_SHIFT - 2
|
|
|
|
endmenu
|
|
|
|
source "drivers/firmware/Kconfig"
|
|
|
|
menu "Power management options"
|
|
|
|
source "kernel/power/Kconfig"
|
|
|
|
source "drivers/acpi/Kconfig"
|
|
|
|
config ARCH_SUSPEND_POSSIBLE
|
|
depends on SW64
|
|
def_bool y
|
|
|
|
config ARCH_HIBERNATION_POSSIBLE
|
|
depends on SW64
|
|
def_bool y
|
|
|
|
source "drivers/cpuidle/Kconfig"
|
|
|
|
source "drivers/idle/Kconfig"
|
|
|
|
endmenu
|
|
|
|
source "arch/sw_64/kvm/Kconfig"
|