nuttx/arch/Kconfig
chao an e11c793b33 toolchain/tasking: add dependencies rules for tasking compiler
Tasking compiler uses customized compilation options for generating dependencies files

Signed-off-by: chao an <anchao@lixiang.com>
2024-02-19 03:36:43 -08:00

1422 lines
39 KiB
Plaintext

#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
choice
prompt "CPU Architecture"
default ARCH_ARM
config ARCH_ARM
bool "ARM"
select ARCH_HAVE_BACKTRACE
select ARCH_HAVE_INTERRUPTSTACK
select ARCH_HAVE_FORK
select ARCH_HAVE_STACKCHECK
select ARCH_HAVE_CUSTOMOPT
select ARCH_HAVE_STDARG_H
select ARCH_HAVE_SETJMP if !ARCH_TOOLCHAIN_IAR
select ARCH_HAVE_SYSCALL_HOOKS
select ARCH_HAVE_RDWR_MEM_CPU_RUN
select ARCH_HAVE_TCBINFO
select ARCH_HAVE_THREAD_LOCAL
---help---
The ARM architectures
config ARCH_ARM64
bool "ARM64"
select ALARM_ARCH
select ARCH_HAVE_BACKTRACE
select ARCH_HAVE_INTERRUPTSTACK
select ARCH_HAVE_STACKCHECK
select ARCH_HAVE_CUSTOMOPT
select ARCH_HAVE_STDARG_H
select ARCH_HAVE_SETJMP
select ARCH_HAVE_SYSCALL_HOOKS
select ARCH_HAVE_RDWR_MEM_CPU_RUN
select ARCH_HAVE_TCBINFO
select ARCH_HAVE_THREAD_LOCAL
select ARCH_HAVE_PERF_EVENTS
select ONESHOT
---help---
The ARM64 architectures
config ARCH_AVR
bool "AVR"
select ARCH_NOINTC
select ARCH_HAVE_INTERRUPTSTACK
select ARCH_HAVE_CUSTOMOPT
---help---
Atmel 8-bit bit AVR and 32-bit AVR32 architectures
config ARCH_HC
bool "Freescale HC"
select ARCH_NOINTC
select ARCH_HAVE_INTERRUPTSTACK
---help---
Freescale HC architectures (M9S12)
config ARCH_MIPS
bool "MIPS"
select ARCH_HAVE_INTERRUPTSTACK
select ARCH_HAVE_CUSTOMOPT
---help---
MIPS architectures (PIC32)
config ARCH_MISOC
bool "MISOC"
select ARCH_HAVE_INTERRUPTSTACK
select ARCH_HAVE_CUSTOMOPT
select ARCH_HAVE_STDARG_H
---help---
MISOC
config ARCH_RENESAS
bool "Renesas"
select ARCH_NOINTC
select ARCH_HAVE_INTERRUPTSTACK
---help---
Renesas architectures (SH and M16C).
config ARCH_RISCV
bool "RISC-V"
select ARCH_HAVE_BACKTRACE
select ARCH_HAVE_CPUINFO
select ARCH_HAVE_INTERRUPTSTACK
select ARCH_HAVE_STACKCHECK
select ARCH_HAVE_FORK
select ARCH_HAVE_CUSTOMOPT
select ARCH_HAVE_SETJMP
select ARCH_HAVE_STDARG_H
select ARCH_HAVE_SYSCALL_HOOKS
select ARCH_HAVE_RDWR_MEM_CPU_RUN
select ARCH_HAVE_TCBINFO
select ARCH_HAVE_THREAD_LOCAL
select ARCH_HAVE_LAZYFPU if ARCH_HAVE_FPU
---help---
RISC-V 32 and 64-bit RV32 / RV64 architectures.
config ARCH_SIM
bool "Simulation"
select ARCH_HAVE_BACKTRACE
select ARCH_HAVE_MULTICPU
select ARCH_HAVE_RTC_SUBSECONDS
select ARCH_HAVE_SERIAL_TERMIOS
select ARCH_HAVE_SYSCALL_HOOKS
select ARCH_HAVE_TICKLESS
select ARCH_HAVE_POWEROFF
select ARCH_HAVE_TESTSET
select ARCH_HAVE_FORK if !HOST_WINDOWS
select ARCH_HAVE_SETJMP
select ARCH_HAVE_CUSTOMOPT
select ARCH_HAVE_TCBINFO
select ARCH_HAVE_TEXT_HEAP
select ARCH_SETJMP_H
select ALARM_ARCH
select ONESHOT
select SERIAL_CONSOLE
select SERIAL_IFLOWCONTROL
select SCHED_HPWORK
select ARCH_HAVE_CPUINFO
---help---
Linux/Cygwin user-mode simulation.
config ARCH_X86
bool "x86"
select ARCH_HAVE_TCBINFO
---help---
Intel x86 architectures.
config ARCH_X86_64
bool "x86_64"
select ARCH_HAVE_TCBINFO
select LIBC_ARCH_ELF_64BIT if LIBC_ARCH_ELF
---help---
x86-64 architectures.
config ARCH_XTENSA
bool "Xtensa"
select ARCH_HAVE_BACKTRACE
select ARCH_HAVE_CPUINFO
select ARCH_HAVE_INTERRUPTSTACK
select ARCH_HAVE_STACKCHECK
select ARCH_HAVE_CUSTOMOPT
select ARCH_HAVE_TCBINFO
select ARCH_HAVE_STDARG_H
select ARCH_HAVE_SETJMP if ARCH_TOOLCHAIN_GNU
select ARCH_HAVE_SYSCALL_HOOKS
select ARCH_HAVE_PERF_EVENTS
---help---
Cadence® Tensilica® Xtensa® actictures.
config ARCH_Z16
bool "ZNEO"
select ARCH_HAVE_HEAP2
---help---
ZiLOG ZNEO 16-bit architectures (z16f).
config ARCH_Z80
bool "z80"
select ARCH_HAVE_HEAP2
---help---
ZiLOG 8-bit architectures (z80, ez80, z8).
config ARCH_OR1K
bool "OpenRISC"
---help---
OpenRISC architectures.
config ARCH_SPARC
bool "SPARC"
select ARCH_HAVE_INTERRUPTSTACK
select ARCH_HAVE_CUSTOMOPT
select ARCH_HAVE_TCBINFO
---help---
SPARC architectures (SPARC V8)
endchoice
config ARCH
string
default "arm" if ARCH_ARM
default "arm64" if ARCH_ARM64
default "avr" if ARCH_AVR
default "hc" if ARCH_HC
default "mips" if ARCH_MIPS
default "misoc" if ARCH_MISOC
default "renesas" if ARCH_RENESAS
default "risc-v" if ARCH_RISCV
default "sim" if ARCH_SIM
default "x86" if ARCH_X86
default "x86_64" if ARCH_X86_64
default "xtensa" if ARCH_XTENSA
default "z16" if ARCH_Z16
default "z80" if ARCH_Z80
default "or1k" if ARCH_OR1K
default "sparc" if ARCH_SPARC
source "arch/arm/Kconfig"
source "arch/arm64/Kconfig"
source "arch/avr/Kconfig"
source "arch/hc/Kconfig"
source "arch/mips/Kconfig"
source "arch/misoc/Kconfig"
source "arch/renesas/Kconfig"
source "arch/risc-v/Kconfig"
source "arch/sim/Kconfig"
source "arch/x86/Kconfig"
source "arch/x86_64/Kconfig"
source "arch/xtensa/Kconfig"
source "arch/z16/Kconfig"
source "arch/z80/Kconfig"
source "arch/or1k/Kconfig"
source "arch/sparc/Kconfig"
config ARCH_CHIP_CUSTOM
bool "Custom Chip Support"
default n
if ARCH_CHIP_CUSTOM
menu "Custom Chip Configuration"
config ARCH_CHIP_CUSTOM_NAME
string "Custom chip name"
default ""
---help---
This is a name for the chip. It is not used except to return the
information via the NSH uname command.
config ARCH_CHIP_CUSTOM_DIR
string "Custom chip directory"
default ""
---help---
If the custom chip configuration is selected, then it is necessary
to also tell the build system where it can find the chip directory
for the custom chip.
In this case, the chip directory is assumed to lie outside the
NuttX directory. The provided path must then be a full, absolute
path to some location outside of the NuttX source tree (like
"~/projects/mychip").
config ARCH_CHIP_CUSTOM_DIR_RELPATH
bool "Relative custom chip directory"
default y
---help---
Specifies that the chip directory is relative to the NuttX directory.
endmenu # Custom Chip Configuration
endif #ARCH_CHIP_CUSTOM
source "$BINDIR/arch/dummy/Kconfig"
config ARCH_TOOLCHAIN_IAR
bool
default n
config ARCH_TOOLCHAIN_GNU
bool
default n
config ARCH_TOOLCHAIN_CLANG
bool
select ARCH_TOOLCHAIN_GNU
default n
config ARCH_TOOLCHAIN_TASKING
bool
default n
choice
prompt "Link Time Optimization (LTO)"
default LTO_NONE
---help---
This option enables Link Time Optimization (LTO), which allows the
compiler to optimize binaries globally.
If unsure, select LTO_NONE. Note that LTO is very resource-intensive
so it's disabled by default.
config LTO_NONE
bool "None"
---help---
Build the kernel normally, without Link Time Optimization (LTO).
config LTO_FULL
bool "GNU Full LTO (EXPERIMENTAL)"
depends on ARCH_TOOLCHAIN_GNU
---help---
Link time optimization is implemented as a GCC front end for a bytecode
bytecode representation of GIMPLE that is emitted in special sections
of .o files. Currently, LTO support is enabled in most ELF-based systems,
as well as darwin, cygwin and mingw systems.
config LTO_THIN
bool "Clang ThinLTO (EXPERIMENTAL)"
depends on ARCH_TOOLCHAIN_CLANG
---help---
This option enables Clang's ThinLTO, which allows for parallel
optimization and faster incremental compiles compared to the
CONFIG_LTO_FULL option. More information can be found
from Clang's documentation:
https://clang.llvm.org/docs/ThinLTO.html
If unsure, say Y.
endchoice
config ARCH_GNU_NO_WEAKFUNCTIONS
bool
depends on ARCH_TOOLCHAIN_GNU
default n
---help---
Disable support for weak functions.
config ARCH_SIZET_LONG
bool "size_t is type long"
default n
---help---
size_t may be type long or type int. This matters for some
C++ library routines because the NuttX size_t might not have
the same underlying type as your toolchain's size_t.
config ARCH_COVERAGE
bool "Enable code coverage analysis"
select HAVE_CXXINITIALIZE
default n
---help---
Generate code coverage
config ARCH_COVERAGE_ALL
bool "Enable code coverage for the entire image"
depends on ARCH_COVERAGE
default n
---help---
This option activates code coverage instrumentation for the
entire image. If you don't enable this option, you have to
explicitly specify "-fprofile-generate -ftest-coverage" for
the files/directories you want to check. Enabling this option
will get image size increased and performance decreased
significantly.
config ARCH_INSTRUMENT_ALL
bool "Instrument All"
default n
---help---
Add instrument to all source files. we can use instrument_register
to register the instrument function.
comment "Architecture Options"
config ARCH_NOINTC
bool
default n
config ARCH_VECNOTIRQ
bool
default n
config ARCH_HAVE_IRQTRIGGER
bool
default n
depends on !ARCH_NOINTC
config ARCH_DMA
bool
default n
config ARCH_DMA_NO_FLASH_TRANSFER
bool
default n
config ARCH_HAVE_IRQPRIO
bool
default n
config ARCH_ICACHE
bool
default n
config ARCH_ICACHE_LOCK
bool
depends on ARCH_ICACHE
default n
config ARCH_DCACHE
bool
default n
config ARCH_DCACHE_LOCK
bool
depends on ARCH_DCACHE
default n
config ARCH_L2CACHE
bool
default n
config ARCH_HAVE_ADDRENV
bool
default n
config ARCH_NEED_ADDRENV_MAPPING
bool
default n
config ARCH_HAVE_EXTRA_HEAPS
bool
default n
---help---
Special memory regions used as separate heaps
config ARCH_HAVE_TEXT_HEAP
bool
default n
---help---
Special memory region for dynamic code loading
config ARCH_HAVE_DATA_HEAP
bool
default n
---help---
Special memory region for dynamic data loading
config ARCH_HAVE_COPY_SECTION
bool
default n
---help---
Section copying for dynamic code loading
config ARCH_HAVE_MULTICPU
bool
default n
config ARCH_HAVE_FORK
bool
default n
config ARCH_HAVE_FPU
bool
default n
config ARCH_HAVE_DPFPU
bool
default n
select ARCH_HAVE_FPU
config ARCH_HAVE_QPFPU
bool
default n
select ARCH_HAVE_DPFPU
config ARCH_HAVE_LAZYFPU
bool
default n
depends on ARCH_HAVE_FPU
config ARCH_HAVE_MMU
bool
default n
config ARCH_HAVE_MPU
bool
default n
config ARCH_NAND_HWECC
bool
default n
config ARCH_HAVE_EXTCLK
bool
default n
config ARCH_HAVE_POWEROFF
bool
default n
config ARCH_HAVE_PROGMEM
bool
default n
config ARCH_HAVE_PROGMEM_READ
bool
default n
depends on ARCH_HAVE_PROGMEM
config ARCH_HAVE_RESET
bool
default n
config ARCH_HAVE_TESTSET
bool
default n
config ARCH_HAVE_THREAD_LOCAL
bool
default n
config ARCH_HAVE_FETCHADD
bool
default n
config ARCH_HAVE_RTC_SUBSECONDS
bool
default n
config ARCH_HAVE_SYSCALL_HOOKS
bool
default n
---help---
Indicates that the architecture supports the system call hooks as
required if CONFIG_SCHED_INSTRUMENTATION_SYSCALL is enabled. Refer
to sched/Kconfig for additional information.
config ARCH_HAVE_BACKTRACE
bool
default n
config ARCH_HAVE_DEBUG
bool "Architecture have debug support"
default n
config ARCH_HAVE_PERF_EVENTS
bool
default n
---help---
The architecture supports hardware performance counting.
config ARCH_PERF_EVENTS
bool "Configure hardware performance counting"
default y if SCHED_CRITMONITOR || SCHED_IRQMONITOR || RPMSG_PING || SEGGER_SYSVIEW
default n
depends on ARCH_HAVE_PERF_EVENTS
---help---
Enable hardware performance counter support for perf events. If
disabled, perf events will use software events only.
config ARCH_HAVE_BOOTLOADER
bool
default n
config ARCH_HAVE_CPUINFO
bool
default n
config ARCH_HAVE_TCBINFO
bool
default n
config ARCH_HAVE_ELF_EXECUTABLE
bool
default n
config ARCH_HAVE_TRUSTZONE
bool
default n
---help---
Automatically selected to indicate that the ARM CPU supports
TrustZone.
choice
prompt "TrustZone Configuration"
default ARCH_TRUSTZONE_NONSECURE
depends on ARCH_HAVE_TRUSTZONE
config ARCH_TRUSTZONE_SECURE
bool "All CPUs operate secure state"
config ARCH_TRUSTZONE_NONSECURE
bool "All CPUs operate non-secure state"
endchoice # TrustZone Configuration
config ARCH_FPU
bool "FPU support"
default y
depends on ARCH_HAVE_FPU
---help---
Build in support for the Floating Point Unit (FPU).
Check your chip specifications first; not all chips support the FPU.
config ARCH_DPFPU
bool "Double precision FPU support"
default y
depends on ARCH_FPU && ARCH_HAVE_DPFPU
---help---
Enable toolchain support for double precision (64-bit) floating
point if both the toolchain and the hardware support it.
config ARCH_QPFPU
bool "Quad-Precision FPU support"
default y
depends on ARCH_FPU && ARCH_HAVE_DPFPU && ARCH_HAVE_QPFPU
---help---
Enable toolchain support for quadruple precision (128 bits or 16 bytes) floating
point if both the toolchain and the hardware support it.
config ARCH_LAZYFPU
bool "Enable lazy FPU state save / restore"
default n
depends on ARCH_FPU && ARCH_HAVE_LAZYFPU
---help---
Enable lazy FPU state save and restore. Normally FPU state is saved
and restored with the integer context registers, if the task is using
FPU. The state is typically saved into the task's user stack upon
exception entry or context switch out, and restored when the
exception returns or context switches back in.
As the kernel does not use FPU, this can be optimized with the help
of the FPU hardware status and a bit of code logic inside the kernel.
The logic keeps track of the FPU state, which can be "unused",
"dirty" or "clean". A clean state means the FPU has not been used
since the last state save, while the dirty state indicates that the
FPU has been used.
The optimization saves / restores FPU registers only if:
- A context change has happened, save and restore does not happen
during exception entry / return to the same task
- FPU is in use (state is not unused) and
- FPU status is dirty, i.e. FPU has been used after the last
- FPU restore happens when status is in dirty or clean
This saves CPU time as the FPU registers do not have to be moved in
and out when handling an exception that does not result in a context
switch.
The tradeoff with the lazy FPU feature is that it requires a static
memory allocation from the task's TCB to store the FPU registers,
while the non-lazy style can use stack memory for storing the FPU
registers, saving memory as the stack frame for the FPU registers can
be skipped if the FPU is not in use.
config ARCH_USE_MMU
bool "Enable MMU"
default n
depends on ARCH_HAVE_MMU
---help---
The architecture supports supports an MMU. Enable this option in
order to enable use of the MMU. For most architectures, this is
not really an option: It is required to use the MMU. In those
cases, this selection will always be forced.
config ARCH_USE_MPU
bool "Enable MPU"
default n
depends on ARCH_HAVE_MPU
---help---
The architecture supports supports an MPU. Enable this option in
order to enable use of the MPU. For most architectures, this option
is enabled by other, platform-specific logic. In those cases, this
selection will always be forced.
config ARCH_USE_TEXT_HEAP
bool "Enable separate text allocation for dynamic code loading"
default n
depends on ARCH_HAVE_TEXT_HEAP
---help---
This option enables architecture-specific memory allocator
for dynamic code loading. For example, ESP32 has separate memory
regions for instruction and data and the memory region used for
usual malloc doesn't work for instruction.
config ARCH_USE_DATA_HEAP
bool "Enable separate data allocation for dynamic data loading"
default n
depends on ARCH_HAVE_DATA_HEAP
---help---
This option enables architecture-specific memory allocator
for dynamic data loading.
menuconfig ARCH_ADDRENV
bool "Address environments"
default n
depends on ARCH_HAVE_ADDRENV && SCHED_LPWORK
---help---
Support per-task address environments using the MMU... i.e., support
"processes"
config ARCH_USE_COPY_SECTION
bool "Enable arch copy section by self for dynamic code loading"
default n
depends on ARCH_HAVE_COPY_SECTION
---help---
This option enables architecture-specific memory copy for
dynamic code loading. For example, Ambiq has MRAM regions
for instruction which can't load by the memcpy directly.
if ARCH_ADDRENV && ARCH_NEED_ADDRENV_MAPPING
config ARCH_TEXT_VBASE
hex "Virtual .text base"
---help---
The virtual address of the beginning the .text region
config ARCH_DATA_VBASE
hex "Virtual .bss/.data base"
---help---
The virtual address of the beginning of the .bss/.data region.
config ARCH_HEAP_VBASE
hex "Virtual heap base"
---help---
The virtual address of the beginning of the heap region.
config ARCH_VMA_MAPPING
bool "Support runtime memory mapping into SHM area"
default n
config ARCH_SHM_VBASE
hex "Shared memory base"
depends on ARCH_VMA_MAPPING
---help---
The virtual address of the beginning of the shared memory region.
config ARCH_KMAP_VBASE
hex "Kernel dynamic virtual mappings base"
depends on MM_KMAP
---help---
The virtual address of the beginning of the kernel dynamic mapping
region.
config ARCH_TEXT_NPAGES
int "Max .text pages"
default 1
---help---
The maximum number of pages that can allocated for the .text region.
This, along with knowledge of the page size, determines the size of
the .text virtual address space. Default is 1.
config ARCH_DATA_NPAGES
int "Max .bss/.data pages"
default 1
---help---
The maximum number of pages that can allocated for the .bss/.data
region. This, along with knowledge of the page size, determines the
size of the .bss/.data virtual address space. Default is 1.
config ARCH_HEAP_NPAGES
int "Max heap pages"
default 1
---help---
The maximum number of pages that can allocated for the heap region.
This, along with knowledge of the page size, determines the size of
the heap virtual address space. Default is 1.
if ARCH_VMA_MAPPING
config ARCH_SHM_MAXREGIONS
int "Max shared memory regions"
default 1
---help---
The maximum number of regions that can allocated for the shared
memory space. This hard-coded value permits static allocation of
the shared memory data structures and serves no other purpose.
Default is 1.
The size of the virtual shared memory address space is then
determined by the product of the maximum number of regions, the
maximum number of pages per region, and the configured size of
each page.
config ARCH_SHM_NPAGES
int "Max shared memory pages"
default 1
---help---
The maximum number of pages that can allocated per region for the shared memory
region. Default is 1.
The size of the virtual shared memory address space is then
determined by the product of the maximum number of regions, the
maximum number of pages per region, and the configured size of
each page.
endif # ARCH_VMA_MAPPING
config ARCH_KMAP_NPAGES
int "Max kernel dynamic mapping pages"
default 1
---help---
The maximum amount of pages that a kernel can use for dynamically
mapping physical pages to itself.
The size of the virtual shared memory address space is then
determined by the product of the maximum number of regions, the
maximum number of pages per region, and the configured size of
each page.
config ARCH_STACK_DYNAMIC
bool "Dynamic user stack"
default n
depends on BUILD_KERNEL && EXPERIMENTAL
---help---
Select this option if the user process stack resides in its own
address space. The naming of this selection implies that dynamic
stack allocation is supported. Certainly this option must be set if
dynamic stack allocation is supported by a platform. But the more
general meaning of this configuration environment is simply that the
stack has its own address space.
NOTE: This option not yet fully implemented in the code base.
Hence, it is marked EXPERIMENTAL: Do not enable it unless you plan
finish the implementation.
if ARCH_STACK_DYNAMIC
config ARCH_STACK_VBASE
hex "Virtual stack base"
---help---
The virtual address of the beginning the stack region
config ARCH_STACK_NPAGES
int "Max. stack pages"
default 1
---help---
The maximum number of pages that can allocated for the stack region.
This, along with knowledge of the page size, determines the size of
the stack virtual address space. Default is 1.
endif # ARCH_STACK_DYNAMIC
config ARCH_KERNEL_STACK
bool "Kernel process stack"
default LIBC_EXECFUNCS
depends on BUILD_KERNEL
---help---
It this option is selected, then every user process will have two
stacks: A large, potentially dynamically sized user stack and small
kernel stack that is used during system call process.
If this option is not selected, then kernel system calls will simply
use the caller's user stack. So, in most cases, this option is not
required. However, this option is *required* if both BUILD_KERNEL
and LIBC_EXECFUNCS are selected. Why? Because when we instantiate
and initialize the address environment of the new user process, we
will temporarily lose the address environment of the old user
process, including its stack contents. The kernel C logic will
crash immediately with no valid stack in place.
When this option is selected, the smaller kernel stack stays in
place during system call processing event though the original user
stack may or may not be accessible.
if ARCH_KERNEL_STACK
config ARCH_KERNEL_STACKSIZE
int "Kernel stack size"
default 1568
---help---
The common size of each process's kernel stack
endif # ARCH_KERNEL_STACK
config ARCH_PGPOOL_MAPPING
bool "Have page pool mapping"
default n
---help---
If there is a MMU mapping in place for the page pool memory, then
this mapping can be utilized to simplify some page table operations.
Otherwise, a temporary mapping will have to be established each time
it is necessary to modify the contents of a page.
if ARCH_PGPOOL_MAPPING
config ARCH_PGPOOL_PBASE
hex "Page pool physical address"
default 0x0
---help---
The physical address of the start of the page pool memory. This
setting is probably equivalent to other platform specific definitions
but is required again in order to modularize the common address
environment logic.
config ARCH_PGPOOL_VBASE
hex "Page pool virtual address"
default 0x0
---help---
The virtual address of the start of the page pool memory. This
setting is probably equivalent to other platform specific definitions
but is required again in order to modularize the common address
environment logic.
config ARCH_PGPOOL_SIZE
int "Page pool size (bytes)"
default 0
---help---
The size of the page pool memory in bytes. This setting is probably
equivalent to other platform specific definitions but is required again
in order to modularize the common address environment logic.
endif # ARCH_PGPOOL_MAPPING
endif # ARCH_ADDRENV && ARCH_NEED_ADDRENV_MAPPING
menuconfig PAGING
bool "On-demand paging"
default n
depends on ARCH_USE_MMU && !ARCH_ROMPGTABLE
---help---
If set =y in your configation file, this setting will enable the on-demand
paging feature as described in
https://nuttx.apache.org/docs/latest/components/paging.html.
if PAGING
config PAGING_PAGESIZE
int "Page size (bytes)"
default 4096
---help---
The size of one managed page. This must be a value supported by the
processor's memory management unit
config PAGING_NLOCKED
int "Number of locked pages"
default 48
---help---
This is the number of locked pages in the memory map.
config PAGING_CUSTOM_BASE
bool "Custom paging base address"
default n
---help---
By default, the page begins at RAM_START/VSTART. That base address
can be changed if this value is selected.
if PAGING_CUSTOM_BASE
config PAGING_LOCKED_PBASE
hex "Physical base address"
config PAGING_LOCKED_VBASE
hex "Virtual base address"
endif # PAGING_CUSTOM_BASE
config PAGING_NPPAGED
int "Number of physical pages"
default 256
---help---
This is the number of physical pages available to support the paged
text region.
config PAGING_NVPAGED
int "Number of virtual pages"
default 1024
---help---
This actual size of the virtual paged text region (in pages). This
is also the number of virtual pages required to span the entire
paged region. The on-demand paging feature is intended to support
only the case where the virtual paged text area is much larger the
available physical pages. Otherwise, why would you enable on-demand paging?
config PAGING_NDATA
int "Number of data pages"
default 256
---help---
This is the number of data pages in the memory map. The data region
will extend to the end of RAM unless overridden by a setting in the
configuration file.
NOTE: In some architectures, it may be necessary to take some memory
from the end of RAM for page tables or other system usage. The
configuration settings and linker directives must be cognizant of
that: PAGING_NDATA should be defined to prevent the data region from
extending all the way to the end of memory.
config PAGING_DEFPRIO
int "Page fill worker thread priority"
default 100
---help---
The default, minimum priority of the page fill worker thread. The
priority of the page fill work thread will be boosted boosted
dynamically so that it matches the priority of the task on behalf
of which it performs the fill. This defines the minimum priority
that will be used. Default: 100.
config PAGING_STACKSIZE
int "Page fill worker thread stack size"
default 1024
---help---
Defines the size of the allocated stack for the page fill worker
thread. Default: 1024.
config PAGING_BLOCKINGFILL
bool "Blocking fill"
default n
---help---
The architecture specific up_fillpage() function may be blocking
or non-blocking. If defined, this setting indicates that the
up_fillpage() implementation will block until the transfer is
completed. Default: Undefined (non-blocking).
config PAGING_WORKPERIOD
int "Work period (usec)"
default 500000
---help---
The page fill worker thread will wake periodically even if there
is no mapping to do. This selection controls that wake-up period
(in microseconds). This wake-up a failsafe that will handle any
cases where a single is lost (that would really be a bug and
shouldn't happen!) and also supports timeouts for case of non-
blocking, asynchronous fills (see CONFIG_PAGING_TIMEOUT_TICKS).
config PAGING_TIMEOUT
bool "Paging timeout"
default n
---help---
If defined, the implementation will monitor the (asynchronous) page
fill logic. If the fill takes longer than than a timeout value,
then a fatal error will be declared. Default: No timeouts monitored
config PAGING_TIMEOUT_TICKS
int "Paging timeout ticks"
default 10
depends on PAGING_TIMEOUT
---help---
If PAGING_TIMEOUT is defined, then implementation will monitor the
(asynchronous) page fill logic. If the fill takes longer than this
number if microseconds, then a fatal error will be declared.
Default: No timeouts monitored
endif # PAGING
config ARCH_IRQPRIO
bool "Prioritized interrupt support"
default n
depends on ARCH_HAVE_IRQPRIO
---help---
Enable support for prioritized interrupts.
NOTE: The use of interrupt priorities implies that you also have
support for nested interrupts. Most architectures do not support
nesting of interrupts or, if they do, they only supported nested
interrupts with certain configuration options. So this selection
should be used with caution.
config ARCH_STACKDUMP
bool "Dump stack on assertions"
default n
select DEBUG_ALERT
---help---
Enable to do stack dumps after assertions
config ARCH_STACKDUMP_MAX_LENGTH
int "The maximum length for dump stack on assertions"
depends on ARCH_STACKDUMP
default 0
config DUMP_ON_EXIT
bool "Dump all tasks state on exit"
default n
depends on DEBUG_SCHED_INFO
---help---
Dump all tasks state on exit()
config ARCH_USBDUMP
bool "Dump USB trace data"
default n
depends on USBDEV_TRACE
---help---
Enable to do USB trace after assertions
config ARCH_DEADLOCKDUMP
bool "Dump dead lock thread"
default "n"
---help---
This option will dump the dead lock thread when assert happen..
config ENDIAN_BIG
bool "Big Endian Architecture"
default n
depends on !ARCH_RISCV
---help---
Select if architecture operates using big-endian byte ordering.
config ARCH_IDLE_CUSTOM
bool "Custom IDLE loop"
default n
---help---
Each architecture provides a "default" IDLE loop that exits when the
MCU has nothing else to do. This default IDLE loop can be replaced
by a custom, board-specific IDLE loop by setting this option. Such
a custom IDLE loop may do things like a continuous built-in test or
perhaps or IDLE low power operations.
NOTE: As of this writing, this capability is only supported by ARM
and MIPS architectures. However, the implementation is trivial: If
CONFIG_ARCH_IDLE_CUSTOM is defined, then the default IDLE loop file
is not included in the MCU-specific Make.defs file.
config ARCH_CUSTOM_PMINIT
bool "Custom PM initialization"
default n
depends on PM
---help---
Each architecture provides default power management (PM)
initialization that is called automatically when the system is
started. This default PM initialization can be replaced by custom,
board-specific PM initialization by setting this option. Such a
custom initialization may do additional PM-related initialization
that is unique to the board power management requirements.
NOTE: As of this writing, this capability is only supported by the
STM32. However, the implementation is trivial: If CONFIG_ARCH_CUSTOM_PMINIT,
then the default PM initialization is not included in the MCU-specific
Make.defs file.
config ARCH_HAVE_RAMFUNCS
bool
default n
config ARCH_RAMFUNCS
bool "Copy functions to RAM on startup"
default y
depends on ARCH_HAVE_RAMFUNCS
---help---
Copy some functions to RAM at boot time. This is done in some
architectures to improve performance. In other cases, it is done
so that FLASH can be reconfigured while the MCU executes out of
SRAM.
config ARCH_HAVE_RAMVECTORS
bool
default n
config ARCH_RAMVECTORS
bool "Support RAM interrupt vectors"
default n
depends on ARCH_HAVE_RAMVECTORS
---help---
If ARCH_RAMVECTORS is defined, then the architecture will support
modifiable vectors in a RAM-based vector table.
config ARCH_MINIMAL_VECTORTABLE
bool "Minimal RAM usage for vector table"
default n
---help---
Use a minimum amount of RAM for the vector table.
Instead of allowing irq_attach() to work for all interrupt vectors,
restrict to only working for a select few (defined in your board
configuration). This can dramatically reduce the amount of RAM used
be your vector table.
To use this setting, you must have a file in your board config that
provides:
#include <nuttx/arch.h>
const irq_mapped_t g_irqmap[NR_IRQS] =
{
... IRQ to index mapping values ...
};
This table is index by the hardware IRQ number and provides a value
in the range of 0 to CONFIG_ARCH_NUSER_INTERRUPTS that is the new,
mapped index into the vector table. Unused, unmapped interrupts
should be set to IRQMAPPED_MAX. So, for example, if g_irqmap[37]
== 24, then the hardware interrupt vector 37 will be mapped to the
interrupt vector table at index 24. if g_irqmap[42] ==
IRQMAPPED_MAX, then hardware interrupt vector 42 is not used and
if it occurs will result in an unexpected interrupt crash.
config ARCH_NUSER_INTERRUPTS
int "Number of interrupts"
default 0
depends on ARCH_MINIMAL_VECTORTABLE
---help---
If CONFIG_ARCH_MINIMAL_VECTORTABLE is defined, then this setting
defines the actual number of valid, mapped interrupts in g_irqmap.
This number will be the new size of the OS vector table
# Bring-up debug configuration options. These are only intended for low level
# bring-up and not part of normal platform configuration. They should never be
# selected in a "normal" configuration and, hence, depend on both EXPERIMENTAL
# and DEBUG_FEATURES.
menu "Bring-Up Options"
depends on DEBUG_FEATURES
config SUPPRESS_CLOCK_CONFIG
bool "Suppress clock configuration"
default n
---help---
Do not configure clocking. Instead relies on the reset clock
configuration (or clock configuration provided by a bootloader).
config SUPPRESS_INTERRUPTS
bool "Suppress all interrupts"
default n
---help---
Do not enable interrupts
config SUPPRESS_TIMER_INTS
bool "No timer"
default n
---help---
Do not initialize or enable the system timer
config SUPPRESS_SERIAL_INTS
bool "Suppress serial interrupts"
default n
---help---
Console will poll
config SUPPRESS_UART_CONFIG
bool "Do no re-configure UART"
default n
---help---
Do not re-configure the serial console UART from its start-up state.
This is useful when a boot loader has already initialized the serial
port.
endmenu # Bring-Up Options
comment "Board Settings"
config BOARD_LOOPSPERMSEC
int "Delay loops per millisecond"
default 5000
---help---
Simple delay loops are used by some logic, especially during boot-up,
driver initialization. These delay loops must be calibrated for each
board in order to assure accurate timing by the delay loops.
comment "Interrupt options"
config ARCH_HAVE_INTERRUPTSTACK
bool
default n
config ARCH_INTERRUPTSTACK
int "Interrupt Stack Size"
depends on ARCH_HAVE_INTERRUPTSTACK
default 0
---help---
This architecture supports an interrupt stack. If defined, this symbol
will be the size of the interrupt stack in bytes. If not defined (or
defined to be zero), the user task stacks will be used during interrupt
handling.
config ARCH_HAVE_HIPRI_INTERRUPT
bool
default n
config ARCH_HIPRI_INTERRUPT
bool "High priority interrupts"
default n
depends on ARCH_HAVE_HIPRI_INTERRUPT && ARCH_HAVE_IRQPRIO
select ARCH_IRQPRIO
---help---
NOTE: This description is currently unique to the Cortex-M family
which is the only family that currently supports this feature. The
general feature is not conceptually unique to the Cortex-M but if it
is extended to any other family, then this discussion will have to
be generalized.
If ARMV7M_USEBASEPRI is selected, then interrupts will be disabled
by setting the BASEPRI register to NVIC_SYSH_DISABLE_PRIORITY so
that most interrupts will not have execution priority. SVCall must
have execution priority in all cases.
In the normal cases, interrupts are not nest-able and all interrupts
run at an execution priority between NVIC_SYSH_PRIORITY_MIN and
NVIC_SYSH_PRIORITY_MAX (with NVIC_SYSH_PRIORITY_MAX reserved for
SVCall).
If, in addition, ARCH_HIPRI_INTERRUPT is defined, then special high
priority interrupts are supported. These are not "nested" in the
normal sense of the word. These high priority interrupts can
interrupt normal processing but execute outside of OS (although they
can "get back into the game" via a PendSV interrupt).
How do you specify a high priority interrupt? You need to do two
things:
1) You need to change the address in the vector table so that
the high priority interrupt vectors to your special C
interrupt handler. There are two ways to do this:
a) If you select CONFIG_ARCH_RAMVECTORS, then vectors will
be kept in RAM and the system will support the interface:
int up_ramvec_attach(int irq, up_vector_t vector)
that can be used to attach your C interrupt handler to the
vector at run time.
b) Alternatively, you could keep your vectors in FLASH but in
order to this, you would have to develop your own custom
vector table.
2) Then set the priority of your interrupt to NVIC to
NVIC_SYSH_HIGH_PRIORITY using the standard interface:
int up_prioritize_irq(int irq, int priority)
NOTE: ARCH_INTERRUPTSTACK must be set in kernel mode (BUILD_KERNEL).
In kernel mode without an interrupt stack, the interrupt handler
will set the MSP to the stack pointer of the interrupted thread. If
the interrupted thread was a privileged thread, that will be the MSP
otherwise it will be the PSP. If the PSP is used, then the value of
the MSP will be invalid when the interrupt handler returns because
it will be a pointer to an old position in the unprivileged stack.
Then when the high priority interrupt occurs and uses this stale MSP,
there will most likely be a system failure.
If the interrupt stack is selected, on the other hand, then the
interrupt handler will always set the MSP to the interrupt
stack. So when the high priority interrupt occurs, it will either
use the MSP of the last privileged thread to run or, in the case of
the nested interrupt, the interrupt stack if no privileged task has
run
comment "Boot options"
choice
prompt "Boot Mode"
default BOOT_RUNFROMFLASH
config BOOT_RUNFROMEXTSRAM
bool "Run from external SRAM"
---help---
Some configuration support booting and running from external SRAM.
config BOOT_RUNFROMFLASH
bool "Boot and run from flash"
---help---
Most configurations support XIP operation from FLASH but must copy
initialized .data sections to RAM. (This is the default).
config BOOT_RUNFROMISRAM
bool "Boot and run from internal SRAM"
---help---
Some configuration support booting and running from internal SRAM.
config BOOT_RUNFROMSDRAM
bool "Boot and run from external SDRAM"
---help---
Some configuration support booting and running from external SDRAM.
config BOOT_COPYTORAM
bool "Boot from FLASH but copy to ram"
---help---
Some configurations boot in FLASH but copy themselves entirely into
RAM for better performance.
endchoice
menu "Boot Memory Configuration"
config RAM_START
hex "Primary RAM start address (physical)"
default 0x0
---help---
The physical start address of primary installed RAM. "Primary" RAM
refers to the RAM that you link program code into. If program code
does not execute out of RAM but from FLASH, then you may designate
any block of RAM as "primary."
config RAM_VSTART
hex "Primary RAM start address (virtual)"
default 0x0
depends on ARCH_USE_MMU
---help---
The virtual start address of installed primary RAM. "Primary" RAM
refers to the RAM that you link program code into. If program code
does not execute out of RAM but from FLASH, then you may designate
any block of RAM as "primary."
config RAM_SIZE
int "Primary RAM size"
default 0
---help---
The size in bytes of the installed primary RAM. "Primary" RAM
refers to the RAM that you link program code into. If program code
does not execute out of RAM but from FLASH, then you may designate
any block of RAM as "primary."
if BOOT_RUNFROMFLASH && ARCH_USE_MMU
config FLASH_START
hex "Boot FLASH start address (physical)"
default 0x0
---help---
The physical start address of installed boot FLASH. "Boot" FLASH
refers to the FLASH that you link program code into.
config FLASH_VSTART
hex "Boot FLASH start address (virtual)"
default 0x0
---help---
The virtual start address of installed boot FLASH. "Boot" FLASH
refers to the FLASH that you link program code into.
config FLASH_SIZE
int "Boot FLASH size"
default 0
---help---
The size in bytes of the installed boot FLASH. "Boot" FLASH
refers to the FLASH that you link program code into.
endif # BOOT_RUNFROMFLASH && ARCH_USE_MMU
config ARCH_HAVE_SDRAM
bool
default n
config BOOT_SDRAM_DATA
bool "Data in SDRAM"
default n
depends on ARCH_HAVE_SDRAM && !BOOT_RUNFROMSDRAM
---help---
This selection should be set if data lies in SDRAM (vs. SRAM) and if
SDRAM was not previously initialized by a loader. Obviously, this
does not apply if we booting from SDRAM because SDRAM must have been
initialized priority to loading NuttX into SDRAM.
In the case where SDRAM must be initialized by NuttX, the
initialization sequence is a little different: Normally, .data and
.bss must be initialized before starting the system. But in this
case SDRAM must be configured by board-specific logic before the
.data and .bss sections can be initialized.
endmenu # Boot Memory Configuration