diff options
| -rw-r--r-- | sys/amd64/amd64/bios.c | 4 | ||||
| -rw-r--r-- | sys/i386/i386/bios.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/sys/amd64/amd64/bios.c b/sys/amd64/amd64/bios.c index 56fdf1d..b28deb3 100644 --- a/sys/amd64/amd64/bios.c +++ b/sys/amd64/amd64/bios.c @@ -23,7 +23,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: bios.c,v 1.7 1997/10/21 07:40:22 msmith Exp $ + * $Id: bios.c,v 1.8 1997/11/07 08:52:26 phk Exp $ */ /* @@ -83,7 +83,7 @@ bios32_init(void *junk) ck += cv[i]; } /* If checksum is OK, enable use of the entrypoint */ - if (ck == 0) { + if ((ck == 0) && (sdh->entry < (BIOS_START + BIOS_SIZE))) { bios32_SDCI = (caddr_t)BIOS_PADDRTOVADDR(sdh->entry); if (bootverbose) { printf("Found BIOS32 Service Directory header at %p\n", sdh); diff --git a/sys/i386/i386/bios.c b/sys/i386/i386/bios.c index 56fdf1d..b28deb3 100644 --- a/sys/i386/i386/bios.c +++ b/sys/i386/i386/bios.c @@ -23,7 +23,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: bios.c,v 1.7 1997/10/21 07:40:22 msmith Exp $ + * $Id: bios.c,v 1.8 1997/11/07 08:52:26 phk Exp $ */ /* @@ -83,7 +83,7 @@ bios32_init(void *junk) ck += cv[i]; } /* If checksum is OK, enable use of the entrypoint */ - if (ck == 0) { + if ((ck == 0) && (sdh->entry < (BIOS_START + BIOS_SIZE))) { bios32_SDCI = (caddr_t)BIOS_PADDRTOVADDR(sdh->entry); if (bootverbose) { printf("Found BIOS32 Service Directory header at %p\n", sdh); |
