0570bc8b7c
- Hugepage support - "Image" header support for RISC-V kernel binaries, compatible with the current ARM64 "Image" header - Initial page table setup now split into two stages - CONFIG_SOC support (starting with SiFive SoCs) - Avoid reserving memory between RAM start and the kernel in setup_bootmem() - Enable high-res timers and dynamic tick in the RV64 defconfig - Remove long-deprecated gate area stubs - MAINTAINERS updates to switch to the newly-created shared RISC-V git tree, and to fix a get_maintainers.pl issue for patches involving SiFive E-mail addresses Also, one integration fix to resolve a build problem introduced during in the v5.3-rc1 merge window: - Fix build break after macro-to-function conversion in asm-generic/cacheflush.h -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEElRDoIDdEz9/svf2Kx4+xDQu9KksFAl0wwmkACgkQx4+xDQu9 KkvM0A//W641P2vQm/GBkPiqecAoYhRdGGXO7En3UiOSMe6qoDvhX9p09OtgGWa9 0XyEdj0RQK4UuE07EnHsaIAynYdbv/er1cskkdGRhs28FdJTP2z3OrfnjcRBPQtP mP1d4fwm+n0DTx+BzxihNu+CRSClqVSl58ruaGiN6ZttEuJsVyjM32OPQfQapxxW TWl1oHugXmWLg0QIB+fjNLY9om143di6pRJeBWAQRSDzjA1x+lkVxPy6pqUK3Hjb F/kio+0ornReAwoY8n9WXPijUQ/bK6uY5gj2XpCpbEVbfaWjlh/a9hN8OveDLzFP F2l9bdKaR9/w0B7tplE7MllVI91S3gJ/UscZJQNmVStjY9iI4gphT5Hji6eR5RH4 j15piAR9fY91iXH9XfJYIs69J1oYsaeDBUji8Sy7IdHwQwjdUjncVSF7IUakA6UJ okE1mq14ErZK+E2nl9OJvE89pep0R9GZDQ1kCFKQSw979CfnINDmfr5TsuiRdTU4 mdeYmSu+l6szknLRL/bzMATAAmx6KXAO409scs8KD/xNxOylWkeZ+P47MYpEsV56 G6d3GVZO5r+YafZYjF4aDHATI1Sh/aFPUHRrdqWSAlLJfAIMImV9Vf2UJhotzcTR XDWLZLqFqXB/Vl1xgkmtDAKdEEfu3iL9M9J6szYZdtI9fSiRWl4= =SVSp -----END PGP SIGNATURE----- Merge tag 'riscv/for-v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Paul Walmsley: - Hugepage support - "Image" header support for RISC-V kernel binaries, compatible with the current ARM64 "Image" header - Initial page table setup now split into two stages - CONFIG_SOC support (starting with SiFive SoCs) - Avoid reserving memory between RAM start and the kernel in setup_bootmem() - Enable high-res timers and dynamic tick in the RV64 defconfig - Remove long-deprecated gate area stubs - MAINTAINERS updates to switch to the newly-created shared RISC-V git tree, and to fix a get_maintainers.pl issue for patches involving SiFive E-mail addresses Also, one integration fix to resolve a build problem introduced during in the v5.3-rc1 merge window: - Fix build break after macro-to-function conversion in asm-generic/cacheflush.h * tag 'riscv/for-v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: fix build break after macro-to-function conversion in generic cacheflush.h RISC-V: Add an Image header that boot loader can parse. RISC-V: Setup initial page tables in two stages riscv: remove free_initrd_mem riscv: ccache: Remove unused variable riscv: Introduce huge page support for 32/64bit kernel x86, arm64: Move ARCH_WANT_HUGE_PMD_SHARE config in arch/Kconfig RISC-V: Fix memory reservation in setup_bootmem() riscv: defconfig: enable SOC_SIFIVE riscv: select SiFive platform drivers with SOC_SIFIVE arch: riscv: add config option for building SiFive's SoC resource riscv: Remove gate area stubs MAINTAINERS: change the arch/riscv git tree to the new shared tree MAINTAINERS: don't automatically patches involving SiFive to the linux-riscv list RISC-V: defconfig: Enable NO_HZ_IDLE and HIGH_RES_TIMERS
292 lines
6.6 KiB
Plaintext
292 lines
6.6 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
#
|
|
# For a description of the syntax of this configuration file,
|
|
# see Documentation/kbuild/kconfig-language.rst.
|
|
#
|
|
|
|
config 64BIT
|
|
bool
|
|
|
|
config 32BIT
|
|
bool
|
|
|
|
config RISCV
|
|
def_bool y
|
|
# even on 32-bit, physical (and DMA) addresses are > 32-bits
|
|
select PHYS_ADDR_T_64BIT
|
|
select OF
|
|
select OF_EARLY_FLATTREE
|
|
select OF_IRQ
|
|
select ARCH_HAS_BINFMT_FLAT
|
|
select ARCH_WANT_FRAME_POINTERS
|
|
select CLONE_BACKWARDS
|
|
select COMMON_CLK
|
|
select GENERIC_CLOCKEVENTS
|
|
select GENERIC_CPU_DEVICES
|
|
select GENERIC_IRQ_SHOW
|
|
select GENERIC_PCI_IOMAP
|
|
select GENERIC_SCHED_CLOCK
|
|
select GENERIC_STRNCPY_FROM_USER
|
|
select GENERIC_STRNLEN_USER
|
|
select GENERIC_SMP_IDLE_THREAD
|
|
select GENERIC_ATOMIC64 if !64BIT
|
|
select HAVE_ARCH_AUDITSYSCALL
|
|
select HAVE_MEMBLOCK_NODE_MAP
|
|
select HAVE_DMA_CONTIGUOUS
|
|
select HAVE_FUTEX_CMPXCHG if FUTEX
|
|
select HAVE_PERF_EVENTS
|
|
select HAVE_SYSCALL_TRACEPOINTS
|
|
select IRQ_DOMAIN
|
|
select SPARSE_IRQ
|
|
select SYSCTL_EXCEPTION_TRACE
|
|
select HAVE_ARCH_TRACEHOOK
|
|
select HAVE_PCI
|
|
select MODULES_USE_ELF_RELA if MODULES
|
|
select MODULE_SECTIONS if MODULES
|
|
select THREAD_INFO_IN_TASK
|
|
select PCI_DOMAINS_GENERIC if PCI
|
|
select PCI_MSI if PCI
|
|
select RISCV_TIMER
|
|
select GENERIC_IRQ_MULTI_HANDLER
|
|
select ARCH_HAS_PTE_SPECIAL
|
|
select ARCH_HAS_MMIOWB
|
|
select HAVE_EBPF_JIT if 64BIT
|
|
select EDAC_SUPPORT
|
|
select ARCH_HAS_GIGANTIC_PAGE
|
|
select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
|
|
|
|
config MMU
|
|
def_bool y
|
|
|
|
config ZONE_DMA32
|
|
bool
|
|
default y if 64BIT
|
|
|
|
config PAGE_OFFSET
|
|
hex
|
|
default 0xC0000000 if 32BIT && MAXPHYSMEM_2GB
|
|
default 0xffffffff80000000 if 64BIT && MAXPHYSMEM_2GB
|
|
default 0xffffffe000000000 if 64BIT && MAXPHYSMEM_128GB
|
|
|
|
config ARCH_WANT_GENERAL_HUGETLB
|
|
def_bool y
|
|
|
|
config SYS_SUPPORTS_HUGETLBFS
|
|
def_bool y
|
|
|
|
config STACKTRACE_SUPPORT
|
|
def_bool y
|
|
|
|
config TRACE_IRQFLAGS_SUPPORT
|
|
def_bool y
|
|
|
|
config GENERIC_BUG
|
|
def_bool y
|
|
depends on BUG
|
|
select GENERIC_BUG_RELATIVE_POINTERS if 64BIT
|
|
|
|
config GENERIC_BUG_RELATIVE_POINTERS
|
|
bool
|
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
def_bool y
|
|
|
|
config GENERIC_CSUM
|
|
def_bool y
|
|
|
|
config GENERIC_HWEIGHT
|
|
def_bool y
|
|
|
|
config FIX_EARLYCON_MEM
|
|
def_bool y
|
|
|
|
config PGTABLE_LEVELS
|
|
int
|
|
default 3 if 64BIT
|
|
default 2
|
|
|
|
source "arch/riscv/Kconfig.socs"
|
|
|
|
menu "Platform type"
|
|
|
|
choice
|
|
prompt "Base ISA"
|
|
default ARCH_RV64I
|
|
help
|
|
This selects the base ISA that this kernel will target and must match
|
|
the target platform.
|
|
|
|
config ARCH_RV32I
|
|
bool "RV32I"
|
|
select 32BIT
|
|
select GENERIC_LIB_ASHLDI3
|
|
select GENERIC_LIB_ASHRDI3
|
|
select GENERIC_LIB_LSHRDI3
|
|
select GENERIC_LIB_UCMPDI2
|
|
|
|
config ARCH_RV64I
|
|
bool "RV64I"
|
|
select 64BIT
|
|
select ARCH_SUPPORTS_INT128 if GCC_VERSION >= 50000
|
|
select HAVE_FUNCTION_TRACER
|
|
select HAVE_FUNCTION_GRAPH_TRACER
|
|
select HAVE_FTRACE_MCOUNT_RECORD
|
|
select HAVE_DYNAMIC_FTRACE
|
|
select HAVE_DYNAMIC_FTRACE_WITH_REGS
|
|
select SWIOTLB
|
|
|
|
endchoice
|
|
|
|
# We must be able to map all physical memory into the kernel, but the compiler
|
|
# is still a bit more efficient when generating code if it's setup in a manner
|
|
# such that it can only map 2GiB of memory.
|
|
choice
|
|
prompt "Kernel Code Model"
|
|
default CMODEL_MEDLOW if 32BIT
|
|
default CMODEL_MEDANY if 64BIT
|
|
|
|
config CMODEL_MEDLOW
|
|
bool "medium low code model"
|
|
config CMODEL_MEDANY
|
|
bool "medium any code model"
|
|
endchoice
|
|
|
|
config MODULE_SECTIONS
|
|
bool
|
|
select HAVE_MOD_ARCH_SPECIFIC
|
|
|
|
choice
|
|
prompt "Maximum Physical Memory"
|
|
default MAXPHYSMEM_2GB if 32BIT
|
|
default MAXPHYSMEM_2GB if 64BIT && CMODEL_MEDLOW
|
|
default MAXPHYSMEM_128GB if 64BIT && CMODEL_MEDANY
|
|
|
|
config MAXPHYSMEM_2GB
|
|
bool "2GiB"
|
|
config MAXPHYSMEM_128GB
|
|
depends on 64BIT && CMODEL_MEDANY
|
|
bool "128GiB"
|
|
endchoice
|
|
|
|
|
|
config SMP
|
|
bool "Symmetric Multi-Processing"
|
|
help
|
|
This enables support for systems with more than one CPU. 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, single processor machines. On a single
|
|
processor machine, the kernel will run faster if you say N
|
|
here.
|
|
|
|
If you don't know what to do here, say N.
|
|
|
|
config NR_CPUS
|
|
int "Maximum number of CPUs (2-32)"
|
|
range 2 32
|
|
depends on SMP
|
|
default "8"
|
|
|
|
choice
|
|
prompt "CPU Tuning"
|
|
default TUNE_GENERIC
|
|
|
|
config TUNE_GENERIC
|
|
bool "generic"
|
|
|
|
endchoice
|
|
|
|
config RISCV_ISA_C
|
|
bool "Emit compressed instructions when building Linux"
|
|
default y
|
|
help
|
|
Adds "C" to the ISA subsets that the toolchain is allowed to emit
|
|
when building Linux, which results in compressed instructions in the
|
|
Linux binary.
|
|
|
|
If you don't know what to do here, say Y.
|
|
|
|
menu "supported PMU type"
|
|
depends on PERF_EVENTS
|
|
|
|
config RISCV_BASE_PMU
|
|
bool "Base Performance Monitoring Unit"
|
|
def_bool y
|
|
help
|
|
A base PMU that serves as a reference implementation and has limited
|
|
feature of perf. It can run on any RISC-V machines so serves as the
|
|
fallback, but this option can also be disable to reduce kernel size.
|
|
|
|
endmenu
|
|
|
|
config FPU
|
|
bool "FPU support"
|
|
default y
|
|
help
|
|
Say N here if you want to disable all floating-point related procedure
|
|
in the kernel.
|
|
|
|
If you don't know what to do here, say Y.
|
|
|
|
endmenu
|
|
|
|
menu "Kernel features"
|
|
|
|
source "kernel/Kconfig.hz"
|
|
|
|
endmenu
|
|
|
|
menu "Boot options"
|
|
|
|
config CMDLINE
|
|
string "Built-in kernel command line"
|
|
help
|
|
For most platforms, the arguments for the kernel's command line
|
|
are provided at run-time, during boot. However, there are cases
|
|
where either no arguments are being provided or the provided
|
|
arguments are insufficient or even invalid.
|
|
|
|
When that occurs, it is possible to define a built-in command
|
|
line here and choose how the kernel should use it later on.
|
|
|
|
choice
|
|
prompt "Built-in command line usage" if CMDLINE != ""
|
|
default CMDLINE_FALLBACK
|
|
help
|
|
Choose how the kernel will handle the provided built-in command
|
|
line.
|
|
|
|
config CMDLINE_FALLBACK
|
|
bool "Use bootloader kernel arguments if available"
|
|
help
|
|
Use the built-in command line as fallback in case we get nothing
|
|
during boot. This is the default behaviour.
|
|
|
|
config CMDLINE_EXTEND
|
|
bool "Extend bootloader kernel arguments"
|
|
help
|
|
The command-line arguments provided during boot will be
|
|
appended to the built-in command line. This is useful in
|
|
cases where the provided arguments are insufficient and
|
|
you don't want to or cannot modify them.
|
|
|
|
|
|
config CMDLINE_FORCE
|
|
bool "Always use the default kernel command string"
|
|
help
|
|
Always use the built-in command line, even if we get one during
|
|
boot. This is useful in case you need to override the provided
|
|
command line on systems where you don't have or want control
|
|
over it.
|
|
|
|
endchoice
|
|
|
|
endmenu
|
|
|
|
menu "Power management options"
|
|
|
|
source "kernel/power/Kconfig"
|
|
|
|
endmenu
|