On Mon, Jul 07, 2025 at 08:57:37AM -0700, Jesse Taube wrote:

On Fri, Jul 4, 2025 at 1:17 AM Andrew Jones andrew.jones@linux.dev wrote:

...

On Thu, Jul 03, 2025 at 06:36:00AM -0700, Jesse Taube wrote:

...

Add --[enable|disable]-sbi-exit-code to configure script. With the default value disabled. Add a check for SBI_PASS_EXIT_CODE in the environment, so that passing of the test status is configurable from both the environment and the configure script

Signed-off-by: Jesse Taube jesse@rivosinc.com

configure | 11 +++++++++++ lib/riscv/io.c | 12 +++++++++++- 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/configure b/configure index 20bf5042..7c949bdc 100755 --- a/configure +++ b/configure @@ -67,6 +67,7 @@ earlycon= console= efi= efi_direct= +sbi_exit_code=0 target_cpu=

# Enable -Werror by default for git repositories only (i.e. developer builds) @@ -141,6 +142,9 @@ usage() { system and run from the UEFI shell. Ignored when efi isn't enabled and defaults to enabled when efi is enabled for riscv64. (arm64 and riscv64 only)

•     --[enable|disable]-sbi-exit-code
  

•                            Enable or disable sending pass/fail exit code to SBI SRST.
  

•                            (disabled by default, riscv only)
  

EOF exit 1 } @@ -236,6 +240,12 @@ while [[ $optno -le $argc ]]; do --disable-efi-direct) efi_direct=n ;;

• --enable-sbi-exit-code)
  

•     sbi_exit_code=1
  

•     ;;
  

• --disable-sbi-exit-code)
  

•     sbi_exit_code=0
  

•     ;;
  --enable-werror)
      werror=-Werror
      ;;
  

@@ -551,6 +561,7 @@ EOF elif [ "$arch" = "riscv32" ] || [ "$arch" = "riscv64" ]; then echo "#define CONFIG_UART_EARLY_BASE ${uart_early_addr}" >> lib/config.h [ "$console" = "sbi" ] && echo "#define CONFIG_SBI_CONSOLE" >> lib/config.h

• echo "#define CONFIG_SBI_EXIT_CODE ${sbi_exit_code}" >> lib/config.h echo >> lib/config.h

fi echo "#endif" >> lib/config.h diff --git a/lib/riscv/io.c b/lib/riscv/io.c index b1163404..0e666009 100644 --- a/lib/riscv/io.c +++ b/lib/riscv/io.c @@ -162,8 +162,18 @@ void halt(int code);

void exit(int code) {

• char *s = getenv("SBI_PASS_EXIT_CODE");
  

• bool pass_exit = CONFIG_SBI_EXIT_CODE;
  

This is the first case of what may become more common - a config variable which also has an env override. I think it may be good convention to name them the same, i.e. the env name would also be CONFIG_SBI_EXIT_CODE, unless you think that would be confusing for some reason?

I changed the name because the configure option seemed very long. I will make them both SBI_EXIT_CODE.

We need the CONFIG_ part on the config name in order keep it consistent with other configs, so I think we just need a long name for both.

Should I add a macro to simplify future uses of a config variable which also has an env override.

Sounds good to me.

...

...

• printf("\nEXIT: STATUS=%d\n", ((code) << 1) | 1);
  

• sbi_shutdown(code == 0);
  

• if (s)
  

•         pass_exit = (*s == '1' || *s == 'y' || *s == 'Y');
  

We now have this logic in four places[1]. I think it's time we factor it, and it's counterpart "!(s && (*s == '0' || *s == 'n' || *s == 'N'))" into a couple helper macros. I'm not sure where the best place for those macros to live is, though. I guess libcflat.h, but we really ought to split that thing apart someday...

Is lib/argv.h an ok place?

That could work.

getenv is defined in lib/string.c which is interesting. I wonder if it could be moved to lib/argv.c?

getenv is libc and in lives in stdlib in libc, so we should move our prototype to lib/stdlib.h from libcflat.h, but we don't have a stdlib.c file so string.c and argv.c are both "wrong", but at least string.c also has all the functions getenv depends on locally...

Thanks, drew