Tanushree, Couple notes to get you going here. First off you really want to avoid editing the .config file directly and instead use menuconfig so that the dependencies are handled correctly. You can use "/" to search for config settings. I tweaked the nsh config like this and was able to make it work. The error you were seeing is unrelated to elf, it has to do with the NSH script support, which is also using romfs. The two images are overwriting each other during the build. I did notice what looks like a bug to me, the elf relocation seems to have an issue with the 64bit build, so this config you will notice I set CONFIG_SIM_M32. I will open a bug on that.
❯ diff boards/sim/sim/sim/configs/elf/defconfig boards/sim/sim/sim/configs/nsh/defconfig 16d15 < CONFIG_BOARDCTL_ROMDISK=y 23,26d21 < CONFIG_ELF=y < CONFIG_EXAMPLES_ELF=y < CONFIG_EXAMPLES_ELF_DEVMINOR=6 < CONFIG_EXAMPLES_ELF_DEVPATH="/dev/ram6" 28,29d22 < CONFIG_EXECFUNCS_HAVE_SYMTAB=y < CONFIG_EXECFUNCS_SYSTEM_SYMTAB=y 33a27 > CONFIG_FS_BINFS=y 37a32 > CONFIG_LIBC_EXECFUNCS=y 41a37 > CONFIG_NSH_ARCHROMFS=y 42a39,40 > CONFIG_NSH_CONSOLE_LOGIN=y > CONFIG_NSH_FATDEVNO=2 46a45,46 > CONFIG_NSH_ROMFSDEVNO=1 > CONFIG_NSH_ROMFSETC=y 54d53 < CONFIG_SIM_M32=y --------------------------------------------------------------------------------------- NuttShell (NSH) NuttX-10.0.1 MOTD: username=admin password=Administrator nsh> ? help usage: help [-v] [<cmd>] . cd echo hexdump mkfatfs poweroff sleep umount [ cp exec kill mkrd ps source unset ? cmp exit losetup mh pwd test usleep basename dirname false ls mount rm time xd break dd free mb mv rmdir true cat df help mkdir mw set uname Builtin Apps: elf hello nsh sh nsh> elf Initial memory usage: 1124560 Registering romdisk at /dev/ram6 Memory Usage after romdisk_register: Before: 1124560 After: 1124640 Change: 80 Mounting ROMFS filesystem at target=/mnt/romfs with source=/dev/ram6 Memory Usage after mount: Before: 1124640 After: 1124784 Change: 144 **************************************************************************** * Executing errno **************************************************************************** Memory Usage after exec: Before: 1124784 After: 1192000 Change: 67216 Wait a bit for test completion Hello, World on stdout Hello, World on stderr We failed to open "aflav-sautga-ay!" errno is 2 Memory Usage after program execution: Before: 1192000 After: 1190560 Change: -1440 <-------snip-------> nsh> /mnt/romfs/hello Getting ready to say "Hello, world" Hello, world! It has been said. argc = 1 argv = 0x0xf3e3bb30 argv[0] = (0x0xf3e3bb38) "/mnt/romfs/hello" argv[1] = 0x0 Goodbye, world! On Sun, Apr 11, 2021 at 9:24 PM Tanushree Baindur <tanushree.bain...@gmail.com> wrote: > > Hi, > > I am trying to run the hello world example in > /apps/examples/elf/tests/hello in the simulator. I cleared the existing > configuration using make distclean and then regenerated the .config file > for sim:nsh configuration. I have added the following lines to the end of > the .config file: > > CONFIG_LIBC_ARCH_ELF=y > CONFIG_ELF=y > CONFIG_EXAMPLES_ELF=y > CONFIG_EXAMPLES_ELF_ROMFS=y > CONFIG_EXAMPLES_ELF_DEVPATH="/dev/ram6" > CONFIG_EXAMPLES_ELF_DEVMINOR=6 > CONFIG_ELF_SYMBOL_CACHECOUNT=256 > CONFIG_ELF_RELOCATION_BUFFERCOUNT=256 > CONFIG_LIBC_ARCH_ELF_64BIT=y > > When I run the simulator after a make I get the following error: > nsh: init: fopen failed: 2 > > Could you please let me know if I am missing more configuration settings? > > Thanks, > Tanushree
