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Enable SYSCALL interface with address environments in the SAMA5D4-EK ELF configuration

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This commit is contained in:
Gregory Nutt 2014-08-30 08:48:18 -06:00
parent bda6c84bab
commit 0effe35910
2 changed files with 17 additions and 2 deletions
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14
configs/sama5d4-ek/README.txt
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@ -3701,9 +3701,19 @@ Configurations
CONFIG_GRAN=n : Disable the granule allocator
CONFIG_MM_PGALLOC=n : Disable the page allocator
4. A system call interface is enabled and the ELF test programs interface with the base RTOS code system calls. This eliminates the need for symbol tables to link with the base RTOS (symbol tables are still used, however, to interface with the common C library instaniation). Relevant configuration settings:
RTOS Features -> System call support
CONFIG_LIB_SYSCALL=y : Enable system call support
CONFIG_SYS_NNEST=2 : Max number of nested system calls
CONFIG_SYS_RESERVED=1 : SYStem call 0 is reserved on this platform
Application Configurations -> Examples -> ELF Loader Example
CONFIG_EXAMPLES_ELF_SYSCALL=y : Link apps with the SYStem call library
STATUS:
2014-8-24: This configuration works with the address environment
option disable.
and system call options disabled.
2014-8-28: Now this option works well well with address environments
enabled. There is a potential issue with the use of
task_create() as it is used in the ELF test, but the code
@ -3711,6 +3721,8 @@ Configurations
http://www.nuttx.org/doku.php?id=wiki:nxinternal:memconfigs#task_create
2014-8-29: System call interface verified.
nsh:
This configuration directory provide the NuttShell (NSH). This is a

5
configs/sama5d4-ek/elf/defconfig
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@ -427,7 +427,9 @@ CONFIG_IDLETHREAD_STACKSIZE=1024
CONFIG_USERMAIN_STACKSIZE=2048
CONFIG_PTHREAD_STACK_MIN=256
CONFIG_PTHREAD_STACK_DEFAULT=2048
# CONFIG_LIB_SYSCALL is not set
CONFIG_LIB_SYSCALL=y
CONFIG_SYS_RESERVED=1
CONFIG_SYS_NNEST=2
#
# Device Drivers
@ -701,6 +703,7 @@ CONFIG_BUILTIN_PROXY_STACKSIZE=1024
# CONFIG_EXAMPLES_CXXTEST is not set
# CONFIG_EXAMPLES_DHCPD is not set
CONFIG_EXAMPLES_ELF=y
CONFIG_EXAMPLES_ELF_SYSCALL=y
# CONFIG_EXAMPLES_ELF_LIBC is not set
CONFIG_EXAMPLES_ELF_DEVMINOR=0
CONFIG_EXAMPLES_ELF_DEVPATH="/dev/ram0"