Make sure we zero bss before calling rombios32 code.

This fixes reboots.

2 files changed, 5 insertions, 1 deletions

diff --git a/src/post.c b/src/post.c
index 5254997e..c5dbaf3b 100644
--- a/src/post.c
+++ b/src/post.c
@@ -381,6 +381,10 @@ post()
 
     printf("BIOS - begin\n\n");
 
+    // clear bss section -- XXX - shouldn't use globals
+    extern char __bss_start[], __bss_end[];
+    memset(__bss_start, 0, __bss_end - __bss_start);
+
     rombios32_init();
 
     init_boot_vectors();
diff --git a/src/rombios32.lds.S b/src/rombios32.lds.S
index bb17cf09..94b860e2 100644
--- a/src/rombios32.lds.S
+++ b/src/rombios32.lds.S
@@ -23,7 +23,7 @@ SECTIONS
         . = 0x00040000;
         __bss_start = . ;
         .bss      : { *(.bss) *(COMMON) }
-        _end = . ;
+        __bss_end = . ;
         __call16_from32 = (0xf0000 | OFFSET___call16_from32) ;
         /DISCARD/ : { *(.stab)
                      *(.stabstr)