Hi,
Miod remarked the overwriting of the bootblocks actually is a
regression I introduced. So teintroduce the lost comment and load
ofwboot at 0x6000.
OK?
-Otto
Index: bootblk.fth
===================================================================
RCS file: /cvs/src/sys/arch/sparc64/stand/bootblk/bootblk.fth,v
retrieving revision 1.9
diff -u -p -r1.9 bootblk.fth
--- bootblk.fth 2 Apr 2020 06:06:22 -0000 1.9
+++ bootblk.fth 5 Jun 2020 08:09:33 -0000
@@ -716,7 +716,15 @@ create cur-blockno -1 l, -1 l, \ Curren
2drop
;
-" load-base " evaluate constant loader-base
+\
+\ According to the 1275 addendum for SPARC processors:
+\ Default load-base is 0x4000. At least 0x8.0000 or
+\ 512KB must be available at that address.
+\
+\ The Fcode bootblock can take up up to 8KB (O.K., 7.5KB)
+\ so load programs at 0x4000 + 0x2000=> 0x6000
+\
+" load-base " evaluate 2000 + constant loader-base
: load-file-signon ( load-file len boot-path len -- load-file len boot-path
len )
." Loading file" space 2over type cr ." from device" space 2dup type cr
@@ -821,7 +829,7 @@ create cur-blockno -1 l, -1 l, \ Curren
;
: do-boot ( bootfile -- )
- ." OpenBSD IEEE 1275 Bootblock 2.0" cr
+ ." OpenBSD IEEE 1275 Bootblock 2.1" cr
\ Open boot device
boot-path ( boot-path len )
