partition table in biosboot too. Max 28 BLKCNT, too

diff --git a/sys/arch/i386/stand/biosboot/biosboot.S b/sys/arch/i386/stand/biosboot/biosboot.S
index e86eeb7..f6d3ad2 100644 (file)
--- a/sys/arch/i386/stand/biosboot/biosboot.S
+++ b/sys/arch/i386/stand/biosboot/biosboot.S
@@ -1,4 +1,4 @@
-/*     $OpenBSD: biosboot.S,v 1.6 1997/04/14 19:09:10 mickey Exp $     */
+/*     $OpenBSD: biosboot.S,v 1.7 1997/04/15 08:00:44 deraadt Exp $    */
 
        .file   "bootbios.S"
 
@@ -12,12 +12,25 @@
 #define data32  .byte 0x66
 
 /* Better use 32, 48 does not seem to compile */
+#define        BLKCNT  28              /* Max without colliding with the partition table */
+#if 0
+#ifdef DEBUG
 #define        BLKCNT  32
+#else
+#define        BLKCNT  48
+#endif
+#endif
 
 #define BOOTSEG                0x07c0  /* boot loaded here */
 #define BOOTSTACK      0xfffc  /* stack starts here */
 #define ZMAGIC         0x0b01  /* ZMAGIC */
 
+/*
+ * Partition table values
+ */
+BOOTABLE=      0x80    # value of boot_ind, means bootable partition
+OPENBSDPART=   0xA6    # OpenBSD partition type
+
 #ifdef DEBUG
 #define DBGMSG(msg)            \
        movb    $msg, %al;      \
@@ -291,7 +304,20 @@ _block_table:
 _block_count:
        .byte   BLKCNT  /* entries in _block_table */
 
-       . = 0x200 - 4
+       . = 446
+       .globl  _partitions
+       /* throw in a partition in case we are block0 as well */
+       /* flag, head, sec, cyl, typ, ehead, esect, ecyl, start, len */
+_partitions:
+       .byte   BOOTABLE, 0, 1, 0,OPENBSDPART, 255, 255, 255
+       .long   0,50000
+       .byte   0,0,0,0,0,0,0,0
+       .long   0,0
+       .byte   0,0,0,0,0,0,0,0
+       .long   0,0
+       .byte   0,0,0,0,0,0,0,0
+       .long   0,0
+       
+       . = 0x200 - 2
        /* a little signature */
-       .ascii  "boot"
-
+       .word   0xaa55