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#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#
config E2K
bool
default y
select ARCH_CACHES
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_DMA_WRITE_COMBINE
select ARCH_INLINE_READ_LOCK if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_READ_LOCK_IRQSAVE if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_READ_UNLOCK if !PREEMPTION && !CPU_ES2
select ARCH_INLINE_READ_UNLOCK_BH if !PREEMPTION && !CPU_ES2
select ARCH_INLINE_READ_UNLOCK_IRQ if !PREEMPTION && !CPU_ES2
select ARCH_INLINE_READ_UNLOCK_IRQRESTORE if !PREEMPTION && !CPU_ES2
select ARCH_INLINE_WRITE_LOCK if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_WRITE_LOCK_BH if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_WRITE_LOCK_IRQ if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_WRITE_LOCK_IRQSAVE if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_WRITE_UNLOCK if !PREEMPTION
select ARCH_INLINE_WRITE_UNLOCK_BH if !PREEMPTION
select ARCH_INLINE_WRITE_UNLOCK_IRQ if !PREEMPTION
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE if !PREEMPTION
select ARCH_INLINE_SPIN_TRYLOCK if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_SPIN_TRYLOCK_BH if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_SPIN_LOCK if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_SPIN_LOCK_BH if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_SPIN_LOCK_IRQ if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_SPIN_LOCK_IRQSAVE if !PREEMPTION && !CPU_ES2 && !CPU_E8C
select ARCH_INLINE_SPIN_UNLOCK if !PREEMPTION
select ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPTION
select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION
select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_USE_QUEUED_SPINLOCKS
select ARCH_PROC_KCORE_TEXT
select ARCH_THREAD_STACK_ALLOCATOR
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_MSI
select ARCH_SUPPORTS_NUMA_BALANCING
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
select ARCH_WANT_IPC_PARSE_VERSION
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARCH_WEAK_RELEASE_ACQUIRE
#Unaligned loads are broken on es2
select DCACHE_WORD_ACCESS if !CPU_ES2
select GENERIC_IDLE_POLL_SETUP
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select GENERIC_PENDING_IRQ if SMP
select GENERIC_SMP_IDLE_THREAD
select HAVE_ALIGNED_STRUCT_PAGE
select HAVE_ARCH_BITREVERSE
select HAVE_ARCH_COMPILER_H
select HAVE_ARCH_HUGE_VMAP if !PARAVIRT_GUEST && !KVM_GUEST_KERNEL
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select HAVE_ARCH_VMAP_STACK
# Note that atomic stores and loads are only supported since v6
# (see do_recovery_store()/do_recovery_load() for details).
select HAVE_CMPXCHG_DOUBLE if CPU_ISET >= 6
select HAVE_CONTEXT_TRACKING
select HAVE_COPY_THREAD_TLS
select HAVE_DEBUG_BUGVERBOSE
select HAVE_DEBUG_KMEMLEAK
select HAVE_DYNAMIC_FTRACE
#Unaligned loads are broken on es2
select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_ES2
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_TRACER
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_HW_BREAKPOINT # Always on as it is used to implement ptrace
select HAVE_IDE
#select HAVE_KERNEL_BZIP2 -- worse than XZ on e2k
select HAVE_KERNEL_GZIP # Stands between LZ4 and XZ
select HAVE_KERNEL_LZ4 # Fastest compression/decompression
#select HAVE_KERNEL_LZMA -- worse than XZ on e2k
#select HAVE_KERNEL_LZO -- worse than GZIP on e2k
select HAVE_KERNEL_XZ # Smallest kernel
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_PERF_EVENTS
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_RSEQ
select HAVE_TRACE_CLOCK
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_ARCH_AUDITSYSCALL
select HAVE_KPROBES
select HAVE_KRETPROBES
select HAVE_EXIT_THREAD
select IRQ_FORCED_THREADING
select MODULES_USE_ELF_RELA
select PANIC_ON_OOPS
select PERF_EVENTS
select RTC_CLASS
select SPARSE_IRQ
select SPARSEMEM_VMEMMAP_ENABLE
select SYSCTL_EXCEPTION_TRACE
select TTY
select USER_STACKTRACE_SUPPORT
select IRQ_DOMAIN
select SWIOTLB
select HAVE_MEMBLOCK_NODE_MAP
select INTERVAL_TREE if PROTECTED_MODE
select GENERIC_ALLOCATOR
select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
select IOMMU_DMA
select IOMMU_API
select DMA_REMAP
select THREAD_INFO_IN_TASK
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
select ARCH_HAS_ELF_RANDOMIZE
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select ARCH_HAS_PHYS_TO_DMA
select ARCH_KEEP_MEMBLOCK
select ARCH_SUPPORTS_RT
select HAVE_FAST_GUP
select HAVE_PCI
select HAVE_ARCH_SECCOMP_FILTER
select EDAC_SUPPORT
select HAVE_PREEMPT_LAZY
help
This is a port of Linux on Elbrus microprocessor architecture.
config SWIOTLB
def_bool y
config ARCH_SPARSEMEM_ENABLE
def_bool y
config ARCH_HIBERNATION_POSSIBLE
def_bool y
config 64BIT
def_bool y
config MMU
bool
default y
config NEED_DMA_MAP_STATE
def_bool y
config ZONE_DMA
def_bool y
config ARCH_PROC_KCORE_TEXT
def_bool y
depends on PROC_KCORE
config GENERIC_FIND_FIRST_BIT
def_bool y
config GENERIC_FIND_NEXT_BIT
def_bool y
config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_BUG
def_bool y if BUG
config GENERIC_BUG_RELATIVE_POINTERS
def_bool y
config EARLY_PRINTK
bool
default y
depends on EARLY_DUMP_CONSOLE
config ARCH_MAY_HAVE_PC_FDC
bool
default y
config GREGS_CONTEXT
def_bool y
config GENERIC_IOMAP
bool
default y
config PGTABLE_LEVELS
default 4
config HAVE_GENERIC_GUP
def_bool y
config HAVE_SETUP_PER_CPU_AREA
def_bool y
config NEED_PER_CPU_EMBED_FIRST_CHUNK
def_bool y
config NEED_PER_CPU_PAGE_FIRST_CHUNK
def_bool y
config NEED_SG_DMA_LENGTH
def_bool y
config SYS_SUPPORTS_HUGETLBFS
def_bool y
config ARCH_SUSPEND_POSSIBLE
def_bool y
config ARCH_BOOT_TRACE_POSSIBLE
def_bool y
config HOTPLUG_CPU
def_bool y
depends on SMP
select GENERIC_IRQ_MIGRATION
---help---
Say Y here to allow turning CPUs off and on. CPUs can be
controlled through /sys/devices/system/cpu.
( Note: power management support will enable this option
automatically on SMP systems. )
Say N if you want to disable CPU hotplug.
config GENERIC_GPIO
def_bool y
config ARCH_DMA_ADDR_T_64BIT
def_bool y
config OF_IRQ
bool
default n
config OF_NET
bool
default n
config ARCH_ENABLE_MEMORY_HOTPLUG
def_bool y
config ARCH_ENABLE_MEMORY_HOTREMOVE
def_bool y
config DEFERRED_STRUCT_PAGE_INIT
def_bool y
config HOLES_IN_ZONE
def_bool y
config ARCH_MMAP_RND_BITS_MIN
default 28
config ARCH_MMAP_RND_BITS_MAX
default 32
config ARCH_MMAP_RND_COMPAT_BITS_MIN
default 8
config ARCH_MMAP_RND_COMPAT_BITS_MAX
default 16
menu "Processor type and features"
config E2K_MACHINE_SIC
def_bool y
config E2K_MACHINE_IOHUB
def_bool y
config LOCKDEP_SUPPORT
def_bool y
config STACKTRACE_SUPPORT
def_bool y
config HAVE_LATENCYTOP_SUPPORT
def_bool y
config E2K_MACHINE
bool "E2K machines support"
default n
help
Support only specified E2K machine type
If you say Y only one specified machine type will be supported
by this kernel.
The better way here say N to support all range of machines
config E2K_SIMULATOR
bool "E2K simulator"
depends on E2K_MACHINE
default n
help
You can choose this when you are working on a machine simulator.
config CPU_ES2
def_bool !E2K_MACHINE
depends on !E2K_MINVER_V3
depends on !E2K_MINVER_V4
depends on !E2K_MINVER_V5
depends on !E2K_MINVER_V6
config CPU_E2S
def_bool !E2K_MACHINE
depends on !E2K_MINVER_V4
depends on !E2K_MINVER_V5
depends on !E2K_MINVER_V6
config CPU_E8C
def_bool !E2K_MACHINE
depends on !E2K_MINVER_V5
depends on !E2K_MINVER_V6
config CPU_E1CP
def_bool !E2K_MACHINE
depends on !E2K_MINVER_V5
depends on !E2K_MINVER_V6
config CPU_E8C2
def_bool !E2K_MACHINE
depends on !E2K_MINVER_V6
config CPU_E12C
def_bool !E2K_MACHINE
config CPU_E16C
def_bool !E2K_MACHINE
config CPU_E2C3
def_bool !E2K_MACHINE
config CPU_ISET
int
range 0 6
default 0 if !E2K_MACHINE
default 2 if E2K_ES2_DSP || E2K_ES2_RU
default 3 if E2K_E2S
default 4 if E2K_E8C || E2K_E1CP
default 5 if E2K_E8C2
default 6 if E2K_E16C || E2K_E12C || E2K_E2C3
# Since iset v5 hardware clears RF automatically.
# For fully paravirtualized guest hypervisor does
# all the clearing instead of hardware.
config CPU_HW_CLEAR_RF
def_bool CPU_ISET >= 5 || KVM_GUEST_KERNEL
# 134709 - ibranch does not work in some cases
# Workaround - insert NOPs after ibranch in some places
config CPU_HWBUG_IBRANCH
def_bool CPU_ISET <= 5
config CPU_HAS_FILL_INSTRUCTION
def_bool CPU_ISET >= 6
choice
prompt "Subarchitecture Type"
depends on E2K_MACHINE
config E2K_ES2_DSP
bool "Elbrus e2c+ (Cubic, NUMA, 2 core, DSP, IOHUB, SIC)"
select CPU_ES2
help
Support for Elbrus e2c+ (Cubic) systems.
Say 'Y' here if this kernel is supposed to run on
an Elbrus S2 (Cubic) system.
Only choose this option if you have such a system and cannot run
the kernel on other machines types,
otherwise you should say N here.
config E2K_ES2_RU
bool "Elbrus e2c (Micron, NUMA, 2 core, IOHUB, SIC)"
select CPU_ES2
help
Support for Elbrus e2c (Micron) systems.
Say 'Y' here if this kernel is supposed to run on
an Elbrus e2c (Micron) system.
Only choose this option if you have such a system and cannot run
the kernel on other machines types,
otherwise you should say N here.
config E2K_E2S
bool "Elbrus 2S (NUMA, 4 core, IOHUB, SIC)"
select CPU_E2S
help
Support for Elbrus 2S systems. Say 'Y' here if this kernel is
supposed to run on an Elbrus 2S system.
Only choose this option if you have such a system and cannot run
the kernel on other machines types,
otherwise you should say N here.
config E2K_E8C
bool "Elbrus 8C (NUMA, 8 core, IOHUB-2, SIC)"
select CPU_E8C
help
Support for Elbrus 8C systems. Say 'Y' here if this kernel is
supposed to run on an Elbrus 8C system.
Only choose this option if you have such a system and cannot run
the kernel on other machines types,
otherwise you should say N here.
config E2K_E1CP
bool "Elbrus 1C+ (1 core + GC, IOHUB-2, Legacy SIC)"
select CPU_E1CP
help
Support for Elbrus 1C+ systems. Say 'Y' here if this kernel is
supposed to run on an Elbrus 1C+ system.
Only choose this option if you have such a system and cannot run
the kernel on other machines types,
otherwise you should say N here.
config E2K_E8C2
bool "Elbrus 8C2 (NUMA, 8 core, IOHUB-2, SIC)"
select CPU_E8C2
help
Support for Elbrus 8C systems. Say 'Y' here if this kernel is
supposed to run on an Elbrus 8C2 system.
Only choose this option if you have such a system and cannot run
the kernel on other machines types,
otherwise you should say N here.
config E2K_E12C
bool "Elbrus 12C (NUMA, 12 core, IOHUB-2 , SOC)"
select CPU_E12C
help
Support for Elbrus 12C systems. Say 'Y' here if this kernel is
supposed to run on an Elbrus 12C System On Chip
Only choose this option if you have such a system and cannot run
the kernel on other machines types,
otherwise you should say N here.
config E2K_E16C
bool "Elbrus 16C (NUMA, 16 core, IOHUB-2 , SOC)"
select CPU_E16C
help
Support for Elbrus 16C systems. Say 'Y' here if this kernel is
supposed to run on an Elbrus 16C System On Chip
Only choose this option if you have such a system and cannot run
the kernel on other machines types,
otherwise you should say N here.
config E2K_E2C3
bool "Elbrus 2C3 (NUMA, 2 core + GPU, IOHUB-2 , SOC)"
select CPU_E2C3
help
Support for Elbrus 2C3 systems. Say 'Y' here if this kernel is
supposed to run on an Elbrus 2C + embeded GPU, System On Chip
Only choose this option if you have such a system and cannot run
the kernel on other machines types,
otherwise you should say N here.
endchoice
choice
prompt "Minimal supported E2K generation"
depends on !E2K_MACHINE
default E2K_MINVER_V3
help
Support all Elbrus systems starting from selected architecture
generation. This allows to have better optimized kernel without
quirks for older systems.
config E2K_MINVER_V2
bool "Elbrus v2 support"
help
This options enables kernel with minimally supported Elbrus v2
CPU architecture (Elbrus 2c, 2c+ and later).
config E2K_MINVER_V3
bool "Elbrus v3"
help
This options enables kernel with minimally supported Elbrus v3
CPU architecture (Elbrus 4c and later).
config E2K_MINVER_V4
bool "Elbrus v4"
help
This options enables kernel with minimally supported Elbrus v4
CPU architecture (Elbrus 8c, 1c+ and later).
config E2K_MINVER_V5
bool "Elbrus v5"
help
This options enables kernel with minimally supported Elbrus v5
CPU architecture (Elbrus 8c2 and later).
config E2K_MINVER_V6
bool "Elbrus v6"
help
This options enables kernel with minimally supported Elbrus v6
CPU architecture (Elbrus 12c, 16c, 2c3 and later).
endchoice
config E2K_MINVER
int
default 3 if E2K_MINVER_V3
default 4 if E2K_MINVER_V4
default 5 if E2K_MINVER_V5
default 6 if E2K_MINVER_V6
default 2
menu "MMU Page Tables features"
config MMU_PT_V6
bool "MMU Page Table V6 basic mode"
depends on !E2K_MACHINE || (!CPU_ES2 && !CPU_E2S && \
!CPU_E8C && !CPU_E1CP && !CPU_E8C2)
default y
help
Support for basic (new) structure of Page Tables entries.
Say 'Y' here if this kernel is supposed to run on
an Elbrus 12C/2C3/16C Systems and should use new structures of
Page Tables. Say 'N' if kernel should be run only on legacy mode of
Page Tables
config MMU_SEP_VIRT_SPACE
bool "MMU Separate Page Tables for kernel and users"
depends on !E2K_MACHINE || (!CPU_ES2 && !CPU_E2S && \
!CPU_E8C && !CPU_E1CP && !CPU_E8C2)
default y
help
Enables MMU Separate Page Tables for kernel and users.
Say 'Y' here if this kernel is supposed to run on
an Elbrus 12C/2C3/16C (iset V6 and higher) Systems.
The feature should be enabled to support hardware virtualization mode
config DYNAMIC_SEP_VIRT_SPACE
bool "Separate Page Tables mode can be set/reset in command line"
depends on MMU_SEP_VIRT_SPACE
default n
help
Separate Page Tables mode can be turned off in command line,
but only one time while kernel boot up. The mode is useful for
debug and to measure the efficiency of separation.
The mode can be set/reset only on systems with hardware supported
MMU feature (iset V6 and higher)
config SECCOMP
def_bool y
prompt "Enable seccomp to safely compute untrusted bytecode"
---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 prctl(PR_SET_SECCOMP), it cannot be disabled
and the task is only allowed to execute a few safe syscalls
defined by each seccomp mode.
If unsure, say Y. Only embedded should say N here.
endmenu
config ENABLE_EXTMEM
def_bool y
---help---
E2K can use more than 4 Gigabytes of physical memory.
However, the address space of e2k processors has two regions with
hole between them:
low region from 0 up to 2 Gigabytes 0 - 8000 0000
high region from 2**32 up to 2**48 n 0000 0000 - 1 0000 0000 0000
config E16_CORE_SUPPORT
bool "New processors based on e16 core support"
depends on !E2K_MACHINE
default y if CPU_E16C
help
To support new family of processors based on e16 core
it need compilator lcc-23, which is not now on the staff
Say N to compule without new processors support, in this case
can use compilator lcc-21 and kernel can be compiled in generic
mode
If you say Y then need compile only by lcc-23
# Unknown bug of hardware or software while compiler lift up some operations
# of load of data before call of spinlock function when data can be acceessed
# only after call completion. In this case compiler use DAM to detect that data
# were updated while spinlock completion and reload them if updated.
# Turn off compiler optimization while bug is not detected and fixed.
config SMP_DAM_BUG
bool
default SMP && CPU_ES2
source "kernel/Kconfig.hz"
config GLOBAL_CONTEXT
bool "Map kernel virtual space to global context"
default y
help
Choose this option to map virtual space of kernel to
global context, so all kernel virtual pages and
page tables will be global for all processes.
It should reduce TLB and caches missing
config SECONDARY_SPACE_SUPPORT
bool "Support Secondary Space feature in OS"
default y
help
Select 'y' if you are going to run native Linux-x86 code under
this OS.
config MLT_STORAGE
def_bool SECONDARY_SPACE_SUPPORT
# Note that iset v6 actually supports 48 bits but that
# requires finding space for the linear mapping and for
# vmalloc area if we use pcpu_embed_first_chunk().
config E2K_PA_BITS
int
range 40 48
default 40 if CPU_ISET < 6 || KVM_GUEST_KERNEL
default 44 if CPU_ISET >= 6 && !KVM_GUEST_KERNEL
config ONLY_HIGH_PHYS_MEM
bool "Use only high region of address space of physical memory"
depends on !E2K_E1CP
default y
help
Physical memory of e2k machines can be mapped into two addresses
regions:
low region (below 2**32)
high region (above 2**32)
Low memory cut out some area from high region
If you say here Y then only high region addresses will be used
to access to physical memory.
It allows to extend the low MMIO and PCI addresses areas
and map physical memory to virtual pages of max order
config ONLY_BSP_MEMORY
bool "Only specified nodes memory can be used by other CPUs"
default n
---help---
CPUs can have own memory and access to memory of other CPUs.
If you see Y then all CPUs can use only memory of nodes from
following config parametr
and ignore own
config MEMORY_PRES_MAP
int "Specify mask of nodes with memory"
default 1
depends on ONLY_BSP_MEMORY
range 1 65536
config FORCE_MAX_ZONEORDER
int "Maximum zone order"
range 11 64
default "16"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
pages. This option selects the largest power of two that the kernel
keeps in the memory allocator. If you need to allocate very large
blocks of physically contiguous memory, then you may need to
increase this value.
This config option is actually maximum order plus one. For example,
a value of 11 means that the largest free memory block is 2^10 pages.
The page size is not necessarily 4KB. Keep
this in mind when choosing a value for this option.
# Max 8 Nodes now limited by BOOT_MAX_MEM_NUMNODES to confirm
# to boot_info structure size
config NODES_SHIFT
int "Maximum memory (NUMA) Nodes (as a power of 2)"
range 0 3
default "3" if SMP
default "0"
depends on NEED_MULTIPLE_NODES
---help---
Specify the maximum number of memory (NUMA) Nodes available on the target
system. Increases memory reserved to accommodate various tables.
# Some NUMA nodes can 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.
# For example while a few nodes have memory in low and high range
config NODES_SPAN_OTHER_NODES
def_bool y
config NUMA
bool "NUMA support"
default n
depends on SMP
config COPY_USER_PGD_TO_KERNEL_ROOT_PT
bool "Copy user process PGD entries to kernel root page table"
default y
depends on NUMA
help
If say Y then each CPU has own kernel PGD copy
User process PGD entries are copied to this kernel
PGD table while the process is activated on this CPU
config KTHREAD_ON_CPU
bool "Create kernel threads on specified CPU"
default n
depends on NUMA
help
Support creation of kernel threads on cpecified CPU
to allocate memory resources on the node of this CPU
config BOOT_PRINTK
def_bool n
config SERIAL_BOOT_PRINTK
bool "boot_printk() support"
default y
select BOOT_PRINTK
help
boot_printk() outputs directly to serial port bypassing all
buffers and locks and can work both before and after the switch
to virtual memory addressing. It is useful for hardware debugging.
Only two devices are supported currently: ns16550 (== 8550)
and l_zilog (== am85c30).
On simulator boot_printk() also outputs to LMS console.
config SERIAL_AM85C30_BOOT_CONSOLE
bool "Boot-time serial console on Am85c30 zilog and compatible devices"
depends on SERIAL_BOOT_PRINTK
default y
help
Sey Y to support boot-time console based on Am85c30 serial
PCI device.
config BOOT_SERIAL_BAUD
int "Boot printk serial rate (4800-115200)"
range 4800 115200
depends on SERIAL_BOOT_PRINTK || SERIAL_PRINTK
default "115200"
help
Speed rate for boot printk console
config EARLY_VIRTIO_CONSOLE
bool "Early VIRTIO console on guest kernel"
depends on VIRTIO_CONSOLE && KVM
default y
select BOOT_PRINTK
select L_EARLY_PRINTK
help
Sey Y to support early console based on VIRTIO
and pseudo HVC interface
config ILLEGAL_POINTER_VALUE
hex
default 0xdead000000000000
config MEMLIMIT
int "Physical memory probing range (main region of RAM)"
range 0 2048
default 64
config EXT_MEMLIMIT
int "Extended physical memory probing range (Megabytes)"
depends on ENABLE_EXTMEM
range 0 61440
default 2048
choice
prompt "Embeded Video RAM size"
default VRAM_SIZE_128
help
Embeded graphical controller video ram size
Option is usfull only for e2k internal boot loader on simulator
config VRAM_SIZE_128
bool "128 Mb"
help
Embeded graphical controller video ram size
is 128 Mb
Option is usfull only for e2k internal boot loader on simulator
config VRAM_SIZE_256
bool "256 Mb"
help
Embeded graphical controller video ram size
is 256 Mb
Option is usfull only for e2k internal boot loader on simulator
config VRAM_SIZE_512
bool "512 Mb"
help
Embeded graphical controller video ram size
is 512 Mb
Option is usfull only for e2k internal boot loader on simulator
config VRAM_SIZE_1024
bool "1 Gb"
help
Embeded graphical controller video ram size
is 1 Gb
Option is usfull only for e2k internal boot loader on simulator
config VRAM_DISABLE
bool "Disable embeded graphic support"
help
Embeded graphical controller video ram can be disabled
Option is usfull only for e2k internal boot loader on simulator
endchoice
config ACCESS_CONTROL
bool
default N
config USR_CONTROL_INTERRUPTS
bool "USER can control interrupts"
default N
help
USER can use UPSR register to control interrupts
(only for hardware debugging)
To control interrupts in user mode it needs to call:
e2k_syswork(USER_CONTROL_INTERRUPT, 1, 0); // start
e2k_syswork(USER_CONTROL_INTERRUPT, 0, 0); // stop
config KERNEL_TIMES_ACCOUNT
bool "Collect kernel traps and system calls clock time info"
default N
config MAX_KERNEL_TIMES_NUM
depends on KERNEL_TIMES_ACCOUNT
int "Max Number of last events to collect (1-1024)"
range 1 1024
default 20
config CLI_CHECK_TIME
bool "CLI check time"
# bool 'Symmetric multi-processing support' CONFIG_SMP
config CMDLINE_PROMPT
bool "Enable prompt for kernel command string"
default n
config MAKE_ALL_PAGES_VALID
bool "Make all virtual pages valid"
default y
config USE_AAU
def_bool y
config DATA_STACK_WINDOW
bool "Enable kernel data stack show while fancy stack listing"
default y
help
Say Y here to enable printing of data stack while stack's
printing.
Do "echo 1 > /proc/sys/debug/datastack" to show the stack.
config BINFMT_ELF32
tristate "Kernel support for 32-bit ELF binaries"
default y
select COMPAT_BINFMT_ELF if BINFMT_ELF
config COMPAT
def_bool y
depends on BINFMT_ELF32
select ARCH_WANT_OLD_COMPAT_IPC
config PROTECTED_MODE
tristate "Security mode"
default y
config DBG_RTL_TRACE
bool "Enable printing rtl messages in security mode"
depends on PROTECTED_MODE
default n
config CLW_ENABLE
bool "Enable clean of user stack window"
depends on PROTECTED_MODE
default y
config IPD_DISABLE
bool "Disable Instruction Cache prefetch for kernel"
help
If you say 'Y' then Instruction Cache prefetch will be
disable for kernel threads
Otherwise two line of ICACHE prefetch will be set
default n
config TC_STORAGE
bool "Store Table Cache default line"
help
Flushing Table Cashe and storing default string of TC
when tasks switch
default y
config IGNORE_MEM_LOCK_AS
bool "Ignore exc_mem_lock_as"
help
Ignore mem_lock_as exception in binary compiler task
default n
config RECOVERY
bool "Enable system recovery"
select PM
help
Enable mode to support Suspend to RAM
default y
config MONITORS
bool "Hardware monitor counters support"
depends on PROC_FS
default y
help
Say Y here to enable the monitors supporting mechanism used
for counting of variuos hardware events
config E2K_KEXEC
bool "kexec for E2K"
default y
help
Say Y here to enable support of kexec implementation for E2K.
config DUMP_ALL_STACKS
bool "Enable dump of all stacks"
default y
config CMDLINE
string "Bilt-in kernel command line"
default "root=/dev/sda3 console=ttyLMS0 console=ttyS0,115200 sclkr=no init=/bin/bash transparent_hugepage=madvise iommu=0"
config CMDLINE_OVERRIDE
bool "Built-in command line overrides boot loader arguments"
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.
#
# Define implied options from the CPU selection here
#
config SMP
bool "Symmetric multi-processing support"
default n
---help---
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If
you have a system with more than one CPU, say Y.
If you say N here, the kernel will run on single and multiprocessor
machines, but will use only one CPU of a multiprocessor machine. If
you say Y here, the kernel will run on many, but not all,
singleprocessor machines. On a singleprocessor machine, the kernel
will run faster if you say N here.
Note that if you say Y here and choose architecture "586" or
"Pentium" under "Processor family", the kernel will not work on 486
architectures. Similarly, multiprocessor kernels for the "PPro"
architecture may not work on all Pentium based boards.
People using multiprocessor machines who say Y here should also say
Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
Management" code will be disabled if you say Y here.
See also the <file:Documentation/smp.txt>,
<file:Documentation/i386/IO-APIC.txt>,
<file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
<http://www.tldp.org/docs.html#howto>.
If you don't know what to do here, say N.
config NR_CPUS
int "Maximum number of CPUs (2-255)"
range 2 255
depends on SMP
default "2"
help
This allows you to specify the maximum number of CPUs which this
kernel will support. The maximum supported value is 255 and the
minimum value which makes sense is 2.
This is purely to save memory - each supported CPU adds
approximately eight kilobytes to the kernel image.
config SCHED_MC
def_bool y
depends on NUMA
---help---
Multi-core scheduler support improves the CPU scheduler's decision
making when dealing with multi-core CPU chips at a cost of slightly
increased overhead in some places.
config MCST
bool "MCST additions"
default y
config ARCH_HAS_CACHE_LINE_SIZE
def_bool y
config GENERIC_TIME
def_bool y
config GENERIC_TIME_VSYSCALL
def_bool y
config GENERIC_CMOS_UPDATE
def_bool y
config GENERIC_CLOCKEVENTS
def_bool y
config SCLKR_CLOCKSOURCE
def_bool y
config BIOS
bool "Enable bios chipset settings"
default y
help
Enable bios chipset settings such as io apic serial ports
keyboard, mouse etc.
config ENABLE_BIOS_MPTABLE
bool "Set mptable"
depends on BIOS && L_IO_APIC
default y
help
Constructing bios MP configuration table.
config CEPIC_TIMER_FREQUENCY
int "CEPIC timer and %scklr register frequency as Mhz"
depends on ENABLE_BIOS_MPTABLE
range 1 1000
default 100
help
The simulator may have a CEPIC timer frequency different from
the actual frequency of the hardware implementation.
Define here the frequency of simulator in such case or if it does
not suit the defaul value.
config ENABLE_ELBRUS_PCIBIOS
bool "Enable pcibios"
depends on BIOS
default y
help
Enable pci initialization in bios.
config ENABLE_IDE
bool "Enable hard drive"
depends on BIOS
default y
help
Enable ide in southbridge chip.
config ENABLE_KEYBOARD
bool "Enable keyboard"
depends on BIOS
default y
help
Enable keyboard in superio chip.
config ENABLE_MOUSE
bool "Enable mouse"
depends on BIOS
default y
help
Enable mouse in superio chip.
config ENABLE_FLOPPY
bool "Enable floppy"
depends on BIOS
default y
help
Enable fdc in superio chip.
config ENABLE_MGA
bool "Enable MGA"
depends on BIOS
default y
config ENABLE_RTC
bool "Enable rtc"
depends on BIOS
default y
help
Enable rtc in southbridge chip.
config ENABLE_SERIAL
bool "Enable serial ports"
depends on BIOS
default y
help
Enable com1 com2 in superio chip.
config ENABLE_PARALLEL_PORT
bool "Enable parallel port"
depends on BIOS
default y
help
Enable lpt in superio chip.
config ENABLE_IOAPIC
bool "Enable IO APIC"
depends on BIOS
default y
help
Set southbridge XBCS register io apic enable.
config ADC_DISABLE
bool "Disable second IO-link on e2c+ connected to ADC"
depends on BIOS
default n
help
In some case second link is not connected to anywhere
or not work properly
config OPTIMIZE_REGISTERS_ACCESS
bool "Optimize registers access"
default y
help
Disabling this option will prohibit lcc from optimizing
registers access instructions (rr/rw).
config E2K_STACKS_TRACER
bool "Trace kernel stacks usage"
default n
depends on !STACK_TRACER
select FUNCTION_TRACER
select STACKTRACE
select KALLSYMS
help
This special tracer records the maximum stack footprint of the
kernel and displays it in /sys/kernel/debug/tracing/stack_trace.
You can use 'stack_trace_filter' file to select which functions
to check the stacks on.
This tracer works by hooking into every function call that the
kernel executes, and keeping a maximum stack depth value and
stack-trace saved. If this is configured with DYNAMIC_FTRACE
then it will not have any overhead while the stack tracer
is disabled.
To enable the stack tracer on bootup, pass in 'stacktrace'
on the kernel command line. You can pass 'stacktrace=kernel'
to trace only kernel part of hardware stacks.
The stack tracer can also be enabled or disabled via the
sysctl kernel.stack_tracer_enabled
There is also sysctl kernel.stack_tracer_kernel_only knob
for controlling which threads to trace.
Pass stacktrace_filter= to the kernel command line to set
specific functions to check the stacks on.
Say N if unsure.
# Needed to initialize "fp" field which is used to correct fp stack
# in longjmp/copy_thread
#
# Also used to work around problems with leaf call optimization
# (for details see comments in _mcount()).
config HAVE_FUNCTION_GRAPH_FP_TEST
def_bool y
depends on FUNCTION_GRAPH_TRACER
config EPROF_KERNEL
bool "Enable libeprof-based kernel profiling"
default n
---help---
This option enables libeprof-based branch profiling in kernel.
If unsure, say N.
endmenu
source "arch/l/Kconfig"
menu "Power management options"
source "kernel/power/Kconfig"
source "drivers/acpi/Kconfig"
source "drivers/cpufreq/Kconfig"
source "drivers/cpuidle/Kconfig"
endmenu
menu "Bus options (PCI, ISA)"
source "arch/l/pci/Kconfig" # should be set allways for e2k #
config PCI_USE_VECTOR
bool "Vector-based interrupt indexing (MSI)"
depends on L_LOCAL_APIC && L_IO_APIC
default n
help
This replaces the current existing IRQ-based index interrupt scheme
with the vector-base index scheme. The advantages of vector base
over IRQ base are listed below:
1) Support MSI implementation.
2) Support future IOxAPIC hotplug
Note that this allows the device drivers to enable MSI, Message
Signaled Interrupt, on all MSI capable device functions detected.
Message Signal Interrupt enables an MSI-capable hardware device to
send an inbound Memory Write on its PCI bus instead of asserting
IRQ signal on device IRQ pin.
If you don't know what to do here, say N.
config ISA
bool "ISA support"
help
Find out whether you have ISA slots on your motherboard. ISA is the
name of a bus system, i.e. the way the CPU talks to the other stuff
inside your box. Other bus systems are PCI, EISA, MicroChannel
(MCA) or VESA. ISA is an older system, now being displaced by PCI;
newer boards don't support it. If you have ISA, say Y, otherwise N.
endmenu
config SYSVIPC_COMPAT
def_bool y
depends on SYSVIPC
source "arch/e2k/Kconfig.virt"
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