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 <[email protected]>
---
 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;
+
        printf("\nEXIT: STATUS=%d\n", ((code) << 1) | 1);
-       sbi_shutdown(code == 0);
+
+       if (s)
+               pass_exit = (*s == '1' || *s == 'y' || *s == 'Y');
+
+       if (pass_exit)
+               sbi_shutdown(code == 0);
+       else
+               sbi_shutdown(true);
        halt(code);
        __builtin_unreachable();
 }
-- 
2.43.0


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