############################################################################ # configs/qemu-i486/nsh/defconfig # # Copyright (C) 2011 Gregory Nutt. All rights reserved. # Author: Gregory Nutt # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in # the documentation and/or other materials provided with the # distribution. # 3. Neither the name NuttX nor the names of its contributors may be # used to endorse or promote products derived from this software # without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE # COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS # OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. # ############################################################################ # # Architecture selection # # CONFIG_ARCH - identifies the arch subdirectory and, hence, the # processor architecture. # CONFIG_ARCH_architecture - for use in C code. This identifies the # specific architecture within the chip familyl. # CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory # CONFIG_ARCH_CHIP_name - For use in C code # CONFIG_ARCH_BOARD - identifies the configs subdirectory and, hence, # the board that supports the particular chip or SoC. # CONFIG_ARCH_BOARD_name - for use in C code # CONFIG_ENDIAN_BIG - define if big endian (default is little endian) # CONFIG_BOARD_LOOPSPERMSEC - for delay loops # CONFIG_DRAM_SIZE - Describes the installed DRAM. # CONFIG_DRAM_START - The start address of DRAM (physical) # CONFIG_ARCH_NOINTC - define if the architecture does not # support an interrupt controller or otherwise cannot support # APIs like up_enable_irq() and up_disable_irq(). # CONFIG_ARCH_IRQPRIO - Set if the architecture supports interrupt prioritization # CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt # stack. If defined, this symbol is the size of the interrupt # stack in bytes. If not defined, the user task stacks will be # used during interrupt handling. # CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions # CONFIG_ARCH_BOOTLOADER - Set if you are using a bootloader. # CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to board architecture. # CONFIG_ARCH_BUTTONS - Enable support for buttons. Unique to board architecture. # CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that # cause a 100 second delay during boot-up. This 100 second delay # serves no purpose other than it allows you to calibrate # CONFIG_BOARD_LOOPSPERMSEC. You simply use a stop watch to measure # the 100 second delay then adjust CONFIG_BOARD_LOOPSPERMSEC until # the delay actually is 100 seconds. # CONFIG_ARCH_DMA - Support DMA initialization # CONFIG_ARCH="x86" CONFIG_ARCH_X86=y CONFIG_ARCH_I486=y CONFIG_ARCH_CHIP="qemu" CONFIG_ARCH_CHIP_QEMU=y CONFIG_ARCH_BOARD="qemu-i486" CONFIG_ARCH_BOARD_QEMU_I486=y CONFIG_BOARD_LOOPSPERMSEC=999 CONFIG_DRAM_SIZE=0x00100000 CONFIG_DRAM_START=0x00100000 CONFIG_ARCH_NOINTC=n CONFIG_ARCH_STACKDUMP=y CONFIG_ARCH_LEDS=n CONFIG_ARCH_BUTTONS=n CONFIG_ARCH_CALIBRATION=n CONFIG_ARCH_DMA=n # # 16550 UART Settings # # CONFIG_16550_UART - Enable 16550 UART support # CONFIG_16550_REGINCR - Address increment between registers (1, 2, or 4) # CONFIG_16550_REGWIDTH - Width of a register in bits (8, 16, or 32) # CONFIG_16550_ADDRWIDTH - Width of register address in bytes (8, 16, or 32) # CONFIG_16550_UARTn - 'y' to enable UARTn # CONFIG_16550_UARTn_BASE - Base address for UARTn # CONFIG_16550_UARTn_CLOCK - Input clock for UARTn # CONFIG_16550_UARTn_IRQ - IRQ for UARTn # CONFIG_16550_UART=y CONFIG_16550_REGINCR=1 CONFIG_16550_REGWIDTH=8 CONFIG_16550_ADDRWIDTH=16 CONFIG_16550_SUPRESS_CONFIG=y CONFIG_SUPPRESS_SERIAL_INTS=n CONFIG_16550_UART0=y CONFIG_16550_UART0_BASE=0x3f8 CONFIG_16550_UART0_CLOCK=16000000 CONFIG_16550_UART0_IRQ=IRQ4 CONFIG_16550_UART1=n CONFIG_16550_UART1_BASE=0x2f8 CONFIG_16550_UART1_CLOCK=16000000 CONFIG_16550_UART1_IRQ=IRQ3 CONFIG_16550_UART2=n CONFIG_16550_UART2_BASE=0x3e8 CONFIG_16550_UART2_CLOCK=16000000 CONFIG_16550_UART2_IRQ=IRQ4 CONFIG_16550_UART3=n CONFIG_16550_UART3_BASE=0x2e8 CONFIG_16550_UART3_CLOCK=16000000 CONFIG_16550_UART3_IRQ=IRQ3 # # Serial device driver settings # # CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the # console and ttys0 (default is the UART1). # CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received. # This specific the size of the receive buffer # CONFIG_UARTn_TXBUFSIZE - Characters are buffered before # being sent. This specific the size of the transmit buffer # CONFIG_UARTn_BAUD - The configure BAUD of the UART. Must be # CONFIG_UARTn_BITS - The number of bits. Must be either 7 or 8. # CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity # CONFIG_UARTn_2STOP - Two stop bits # CONFIG_UART0_SERIAL_CONSOLE=y CONFIG_UART1_SERIAL_CONSOLE=n CONFIG_UART2_SERIAL_CONSOLE=n CONFIG_UART3_SERIAL_CONSOLE=n CONFIG_UART0_TXBUFSIZE=256 CONFIG_UART1_TXBUFSIZE=256 CONFIG_UART2_TXBUFSIZE=256 CONFIG_UART3_TXBUFSIZE=256 CONFIG_UART0_RXBUFSIZE=256 CONFIG_UART1_RXBUFSIZE=256 CONFIG_UART2_RXBUFSIZE=256 CONFIG_UART3_RXBUFSIZE=256 CONFIG_UART0_BAUD=57600 CONFIG_UART2_BAUD=57600 CONFIG_UART3_BAUD=57600 CONFIG_UART1_BAUD=57600 CONFIG_UART0_BITS=8 CONFIG_UART1_BITS=8 CONFIG_UART2_BITS=8 CONFIG_UART3_BITS=8 CONFIG_UART0_PARITY=0 CONFIG_UART1_PARITY=0 CONFIG_UART2_PARITY=0 CONFIG_UART3_PARITY=0 CONFIG_UART0_2STOP=0 CONFIG_UART1_2STOP=0 CONFIG_UART2_2STOP=0 CONFIG_UART3_2STOP=0 # # General OS setup # # CONFIG_APPS_DIR - Identifies the relative path to the directory that builds # the application to link with NuttX. Default: ../apps # CONFIG_DEBUG - enables built-in debug options # CONFIG_DEBUG_VERBOSE - enables verbose debug output # CONFIG_DEBUG_SYMBOLS - build without optimization and with debug symbols # (needed for use with a debugger). # CONFIG_MM_REGIONS - If the architecture includes multiple regions of memory # to allocate from, this specifies the number of memory regions that the # memory manager must handle and enables the API mm_addregion(start, end); # CONFIG_ARCH_LOWPUTC - architecture supports low-level, boot time console # output. # CONFIG_MSEC_PER_TICK - The default system timer is 100Hz or MSEC_PER_TICK=10. # This setting may be defined to inform NuttX that the processor hardware is # providing system timer interrupts at some interrupt interval other than 10 # msec. # CONFIG_RR_INTERVAL - The round robin timeslice will be set this number of # milliseconds; Round robin scheduling can be disabled by setting this # value to zero. # CONFIG_SCHED_INSTRUMENTATION - enables instrumentation in scheduler to # monitor system performance # CONFIG_TASK_NAME_SIZE - Spcifies that maximum size of a task name to save in # the TCB. Useful if scheduler instrumentation is selected. Set to zero to # disable. # CONFIG_JULIAN_TIME - Enables Julian time conversions # CONFIG_START_YEAR, CONFIG_START_MONTH, CONFIG_START_DAY - Used to initialize # the internal time logic. # CONFIG_DEV_CONSOLE - Set if architecture-specific logic provides /dev/console. # Enables stdout, stderr, stdin. # CONFIG_DEV_LOWCONSOLE - Use the simple, low-level serial console driver # (minimal support) # CONFIG_MUTEX_TYPES: Set to enable support for recursive and errorcheck # mutexes. Enables pthread_mutexattr_settype(). # CONFIG_PRIORITY_INHERITANCE : Set to enable support for priority inheritance # on mutexes and semaphores. # CONFIG_SEM_PREALLOCHOLDERS: This setting is only used if priority inheritance # is enabled. It defines the maximum number of different threads (minus one) # that can take counts on a semaphore with priority inheritance support. # This may be set to zero if priority inheritance is disabled OR if you are # only using semaphores as mutexes (only one holder) OR if no more than two # threads participate using a counting semaphore. # CONFIG_SEM_NNESTPRIO. If priority inheritance is enabled, then this setting # is the maximum number of higher priority threads (minus 1) than can be # waiting for another thread to release a count on a semaphore. This value # may be set to zero if no more than one thread is expected to wait for a # semaphore. # CONFIG_FDCLONE_DISABLE. Disable cloning of all file descriptors by task_create() # when a new task is started. If set, all files/drivers will appear to be # closed in the new task. # CONFIG_FDCLONE_STDIO. Disable cloning of all but the first three file # descriptors (stdin, stdout, stderr) by task_create() when a new task is # started. If set, all files/drivers will appear to be closed in the new # task except for stdin, stdout, and stderr. # CONFIG_SDCLONE_DISABLE. Disable cloning of all socket desciptors by # task_create() when a new task is started. If set, all sockets will appear # to be closed in the new task. # #CONFIG_APPS_DIR= CONFIG_DEBUG=n CONFIG_DEBUG_VERBOSE=n CONFIG_DEBUG_SYMBOLS=n CONFIG_MM_REGIONS=1 CONFIG_ARCH_LOWPUTC=y CONFIG_RR_INTERVAL=0 CONFIG_SCHED_INSTRUMENTATION=n CONFIG_TASK_NAME_SIZE=32 CONFIG_START_YEAR=2011 CONFIG_START_MONTH=3 CONFIG_START_DAY=3 CONFIG_JULIAN_TIME=n CONFIG_DEV_CONSOLE=y CONFIG_DEV_LOWCONSOLE=n CONFIG_MUTEX_TYPES=y CONFIG_PRIORITY_INHERITANCE=n CONFIG_SEM_PREALLOCHOLDERS=0 CONFIG_SEM_NNESTPRIO=0 CONFIG_FDCLONE_DISABLE=n CONFIG_FDCLONE_STDIO=n CONFIG_SDCLONE_DISABLE=y # # The following can be used to disable categories ofAPIs supported by the OS. # If the compiler supports weak functions, then it should not be necessary to # disable functions unless you want to restrict usage of those APIs. # # There are certain dependency relationships in these features. # # o mq_notify logic depends on signals to awaken tasks waiting for queues to # become full or empty. # o pthread_condtimedwait() depends on signals to wake up waiting tasks. # CONFIG_DISABLE_CLOCK=n CONFIG_DISABLE_POSIX_TIMERS=n CONFIG_DISABLE_PTHREAD=n CONFIG_DISABLE_SIGNALS=n CONFIG_DISABLE_MQUEUE=n CONFIG_DISABLE_MOUNTPOINT=n CONFIG_DISABLE_ENVIRON=n CONFIG_DISABLE_POLL=y # # Misc libc settings # # CONFIG_NOPRINTF_FIELDWIDTH - sprintf-related logic is a little smaller if we # do not support fieldwidthes # CONFIG_NOPRINTF_FIELDWIDTH=n # # Allow for architecture optimized implementations # # The architecture can provide optimized versions of the following to improve # system performance # CONFIG_ARCH_MEMCPY=n CONFIG_ARCH_MEMCMP=n CONFIG_ARCH_MEMMOVE=n CONFIG_ARCH_MEMSET=n CONFIG_ARCH_STRCMP=n CONFIG_ARCH_STRCPY=n CONFIG_ARCH_STRNCPY=n CONFIG_ARCH_STRLEN=n CONFIG_ARCH_STRNLEN=n CONFIG_ARCH_BZERO=n # # General build options # # CONFIG_RRLOAD_BINARY - make the rrload binary format used with BSPs from # www.ridgerun.com using the tools/mkimage.sh script # CONFIG_INTELHEX_BINARY - make the Intel HEX binary format used with many # different loaders using the GNU objcopy program Should not be selected if # you are not using the GNU toolchain. # CONFIG_RAW_BINARY - make a raw binary format file used with many different # loaders using the GNU objcopy program. This option should not be selected # if you are not using the GNU toolchain. # CONFIG_HAVE_LIBM - toolchain supports libm.a # CONFIG_RRLOAD_BINARY=n CONFIG_INTELHEX_BINARY=n CONFIG_RAW_BINARY=n CONFIG_HAVE_LIBM=y # # Sizes of configurable things (0 disables) # # CONFIG_MAX_TASKS - The maximum number of simultaneously active tasks. This # value must be a power of two. # CONFIG_MAX_TASK_ARGS - This controls the maximum number of of parameters # that a task may receive (i.e., maxmum value of 'argc') # CONFIG_NPTHREAD_KEYS - The number of items of thread-specific data that can # be retained # CONFIG_NFILE_DESCRIPTORS - The maximum number of file descriptors (one for # each open) # CONFIG_NFILE_STREAMS - The maximum number of streams that can be fopen'ed # CONFIG_NAME_MAX - The maximum size of a file name. # CONFIG_STDIO_BUFFER_SIZE - Size of the buffer to allocate on fopen. (Only if # CONFIG_NFILE_STREAMS > 0) # CONFIG_NUNGET_CHARS - Number of characters that can be buffered by ungetc() # (Only if CONFIG_NFILE_STREAMS > 0) # CONFIG_PREALLOC_MQ_MSGS - The number of pre-allocated message structures. # The system manages a pool of preallocated message structures to minimize # dynamic allocations # CONFIG_MQ_MAXMSGSIZE - Message structures are allocated with a fixed payload # size given by this settin (does not include other message structure overhead. # CONFIG_MAX_WDOGPARMS - Maximum number of parameters that can be passed to a # watchdog handler # CONFIG_PREALLOC_WDOGS - The number of pre-allocated watchdog structures. The # system manages a pool of preallocated watchdog structures to minimize # dynamic allocations # CONFIG_PREALLOC_TIMERS - The number of pre-allocated POSIX timer structures. # The system manages a pool of preallocated timer structures to minimize # dynamic allocations. Set to zero for all dynamic allocations. # CONFIG_MAX_TASKS=64 CONFIG_MAX_TASK_ARGS=4 CONFIG_NPTHREAD_KEYS=4 CONFIG_NFILE_DESCRIPTORS=32 CONFIG_NFILE_STREAMS=16 CONFIG_NAME_MAX=32 CONFIG_STDIO_BUFFER_SIZE=1024 CONFIG_NUNGET_CHARS=2 CONFIG_PREALLOC_MQ_MSGS=32 CONFIG_MQ_MAXMSGSIZE=32 CONFIG_MAX_WDOGPARMS=4 CONFIG_PREALLOC_WDOGS=32 CONFIG_PREALLOC_TIMERS=8 # # FAT filesystem configuration # CONFIG_FS_FAT - Enable FAT filesystem support # CONFIG_FAT_SECTORSIZE - Max supported sector size # CONFIG_FS_ROMFS - Enable ROMFS filesystem support CONFIG_FS_FAT=y CONFIG_FS_ROMFS=y # # TCP/IP and UDP support via uIP # CONFIG_NET - Enable or disable all network features # CONFIG_NET_IPv6 - Build in support for IPv6 # CONFIG_NSOCKET_DESCRIPTORS - Maximum number of socket descriptors per task/thread. # CONFIG_NET_SOCKOPTS - Enable or disable support for socket options # CONFIG_NET_BUFSIZE - uIP buffer size # CONFIG_NET_TCP - TCP support on or off # CONFIG_NET_TCP_CONNS - Maximum number of TCP connections (all tasks) # CONFIG_NET_TCP_READAHEAD_BUFSIZE - Size of TCP read-ahead buffers # CONFIG_NET_NTCP_READAHEAD_BUFFERS - Number of TCP read-ahead buffers (may be zero) # CONFIG_NET_TCPBACKLOG - Incoming connections pend in a backlog until # accept() is called. The size of the backlog is selected when listen() is called. # CONFIG_NET_MAX_LISTENPORTS - Maximum number of listening TCP ports (all tasks) # CONFIG_NET_UDP - UDP support on or off # CONFIG_NET_UDP_CHECKSUMS - UDP checksums on or off # CONFIG_NET_UDP_CONNS - The maximum amount of concurrent UDP connections # CONFIG_NET_ICMP - ICMP ping response support on or off # CONFIG_NET_ICMP_PING - ICMP ping request support on or off # CONFIG_NET_PINGADDRCONF - Use "ping" packet for setting IP address # CONFIG_NET_STATISTICS - uIP statistics on or off # CONFIG_NET_RECEIVE_WINDOW - The size of the advertised receiver's window # CONFIG_NET_ARPTAB_SIZE - The size of the ARP table # CONFIG_NET_BROADCAST - Broadcast support # CONFIG_NET_FWCACHE_SIZE - number of packets to remember when looking for duplicates # CONFIG_NET=n CONFIG_NET_IPv6=n CONFIG_NSOCKET_DESCRIPTORS=0 CONFIG_NET_SOCKOPTS=y CONFIG_NET_BUFSIZE=420 CONFIG_NET_TCP=n CONFIG_NET_TCP_CONNS=40 CONFIG_NET_MAX_LISTENPORTS=40 CONFIG_NET_UDP=n CONFIG_NET_UDP_CHECKSUMS=y #CONFIG_NET_UDP_CONNS=10 CONFIG_NET_ICMP=n CONFIG_NET_ICMP_PING=n #CONFIG_NET_PINGADDRCONF=0 CONFIG_NET_STATISTICS=y #CONFIG_NET_RECEIVE_WINDOW= #CONFIG_NET_ARPTAB_SIZE=8 CONFIG_NET_BROADCAST=n #CONFIG_NET_FWCACHE_SIZE=2 # # UIP Network Utilities # CONFIG_NET_DHCP_LIGHT - Reduces size of DHCP # CONFIG_NET_RESOLV_ENTRIES - Number of resolver entries CONFIG_NET_DHCP_LIGHT=n CONFIG_NET_RESOLV_ENTRIES=4 # # Settings for examples/uip CONFIG_EXAMPLE_UIP_IPADDR=0xc0a80080 CONFIG_EXAMPLE_UIP_DRIPADDR=0xc0a80001 CONFIG_EXAMPLE_UIP_NETMASK=0xffffff00 CONFIG_EXAMPLE_UIP_DHCPC=n # # Settings for examples/nettest CONFIG_EXAMPLE_NETTEST_SERVER=n CONFIG_EXAMPLE_NETTEST_PERFORMANCE=n CONFIG_EXAMPLE_NETTEST_NOMAC=n CONFIG_EXAMPLE_NETTEST_IPADDR=0xc0a80080 CONFIG_EXAMPLE_NETTEST_DRIPADDR=0xc0a80001 CONFIG_EXAMPLE_NETTEST_NETMASK=0xffffff00 CONFIG_EXAMPLE_NETTEST_CLIENTIP=0xc0a8006a # # Settings for examples/ostest CONFIG_EXAMPLES_OSTEST_LOOPS=100 CONFIG_EXAMPLES_OSTEST_STACKSIZE=4096 # # Settings for apps/nshlib # # CONFIG_NSH_FILEIOSIZE - Size of a static I/O buffer # CONFIG_NSH_STRERROR - Use strerror(errno) # CONFIG_NSH_LINELEN - Maximum length of one command line # CONFIG_NSH_NESTDEPTH - Max number of nested if-then[-else]-fi # CONFIG_NSH_DISABLESCRIPT - Disable scripting support # CONFIG_NSH_DISABLEBG - Disable background commands # CONFIG_NSH_ROMFSETC - Use startup script in /etc # CONFIG_NSH_CONSOLE - Use serial console front end # CONFIG_NSH_TELNET - Use telnetd console front end # CONFIG_NSH_ARCHINIT - Platform provides architecture # specific initialization (nsh_archinitialize()). # # If CONFIG_NSH_TELNET is selected: # CONFIG_NSH_IOBUFFER_SIZE -- Telnetd I/O buffer size # CONFIG_NSH_DHCPC - Obtain address using DHCP # CONFIG_NSH_IPADDR - Provides static IP address # CONFIG_NSH_DRIPADDR - Provides static router IP address # CONFIG_NSH_NETMASK - Provides static network mask # CONFIG_NSH_NOMAC - Use a bogus MAC address # # If CONFIG_NSH_ROMFSETC is selected: # CONFIG_NSH_ROMFSMOUNTPT - ROMFS mountpoint # CONFIG_NSH_INITSCRIPT - Relative path to init script # CONFIG_NSH_ROMFSDEVNO - ROMFS RAM device minor # CONFIG_NSH_ROMFSSECTSIZE - ROMF sector size # CONFIG_NSH_FATDEVNO - FAT FS RAM device minor # CONFIG_NSH_FATSECTSIZE - FAT FS sector size # CONFIG_NSH_FATNSECTORS - FAT FS number of sectors # CONFIG_NSH_FATMOUNTPT - FAT FS mountpoint # CONFIG_NSH_FILEIOSIZE=512 CONFIG_NSH_STRERROR=n CONFIG_NSH_LINELEN=64 CONFIG_NSH_NESTDEPTH=3 CONFIG_NSH_DISABLESCRIPT=n CONFIG_NSH_DISABLEBG=n CONFIG_NSH_ROMFSETC=n CONFIG_NSH_CONSOLE=y CONFIG_NSH_TELNET=n CONFIG_NSH_ARCHINIT=n CONFIG_NSH_IOBUFFER_SIZE=512 CONFIG_NSH_DHCPC=n CONFIG_NSH_NOMAC=y CONFIG_NSH_IPADDR=0x0a000002 CONFIG_NSH_DRIPADDR=0x0a000001 CONFIG_NSH_NETMASK=0xffffff00 CONFIG_NSH_ROMFSMOUNTPT="/etc" CONFIG_NSH_INITSCRIPT="init.d/rcS" CONFIG_NSH_ROMFSDEVNO=0 CONFIG_NSH_ROMFSSECTSIZE=64 CONFIG_NSH_FATDEVNO=1 CONFIG_NSH_FATSECTSIZE=512 CONFIG_NSH_FATNSECTORS=1024 CONFIG_NSH_FATMOUNTPT=/tmp # # Stack and heap information # # CONFIG_BOOT_RUNFROMFLASH - Some configurations support XIP # operation from FLASH but must copy initialized .data sections to RAM. # CONFIG_BOOT_COPYTORAM - Some configurations boot in FLASH # but copy themselves entirely into RAM for better performance. # CONFIG_CUSTOM_STACK - The up_ implementation will handle # all stack operations outside of the nuttx model. # CONFIG_STACK_POINTER - The initial stack pointer # CONFIG_IDLETHREAD_STACKSIZE - The size of the initial stack. # This is the thread that (1) performs the inital boot of the system up # to the point where user_start() is spawned, and (2) there after is the # IDLE thread that executes only when there is no other thread ready to # run. # CONFIG_USERMAIN_STACKSIZE - The size of the stack to allocate # for the main user thread that begins at the user_start() entry point. # CONFIG_PTHREAD_STACK_MIN - Minimum pthread stack size # CONFIG_PTHREAD_STACK_DEFAULT - Default pthread stack size # CONFIG_HEAP_BASE - The beginning of the heap # CONFIG_HEAP_SIZE - The size of the heap # CONFIG_BOOT_RUNFROMFLASH=n CONFIG_BOOT_COPYTORAM=n CONFIG_CUSTOM_STACK=n CONFIG_IDLETHREAD_STACKSIZE=2048 CONFIG_USERMAIN_STACKSIZE=2048 CONFIG_PTHREAD_STACK_MIN=256 CONFIG_PTHREAD_STACK_DEFAULT=2048 CONFIG_HEAP_BASE= CONFIG_HEAP_SIZE=