forked from pool/syslinux
c9ed7a89e1
Copy from system:install:head/syslinux based on submit request 37404 from user snwint OBS-URL: https://build.opensuse.org/request/show/37404 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/syslinux?expand=0&rev=23
181 lines
4.4 KiB
Diff
181 lines
4.4 KiB
Diff
diff --git a/Makefile b/Makefile
|
|
index 2393faa..c7daebb 100644
|
|
--- a/Makefile
|
|
+++ b/Makefile
|
|
@@ -68,7 +68,7 @@ INSTALL_SBIN = extlinux/extlinux
|
|
# Things to install in /usr/lib/syslinux
|
|
INSTALL_AUX = core/pxelinux.0 gpxe/gpxelinux.0 core/isolinux.bin \
|
|
core/isolinux-debug.bin \
|
|
- dos/syslinux.com win32/syslinux.exe \
|
|
+ dos/syslinux.com \
|
|
mbr/*.bin $(MODULES)
|
|
INSTALL_AUX_OPT = win32/syslinux.exe
|
|
|
|
diff --git a/core/Makefile b/core/Makefile
|
|
index 65418c4..fbb38b5 100644
|
|
--- a/core/Makefile
|
|
+++ b/core/Makefile
|
|
@@ -66,6 +66,7 @@ kwdhash.gen: keywords genhash.pl
|
|
iso%.bin: iso%.elf checksumiso.pl
|
|
$(OBJCOPY) -O binary $< $@
|
|
$(PERL) checksumiso.pl $@
|
|
+ -./add_crc $@
|
|
|
|
# Standard rule for {ldlinux,pxelinux,extlinux}.bin
|
|
%.bin: %.elf
|
|
diff --git a/core/add_crc b/core/add_crc
|
|
new file mode 100644
|
|
index 0000000..0da2307
|
|
--- /dev/null
|
|
+++ b/core/add_crc
|
|
@@ -0,0 +1,57 @@
|
|
+#! /usr/bin/perl
|
|
+
|
|
+use integer;
|
|
+
|
|
+# for isolinux
|
|
+#
|
|
+# Ensure checksum over (first sector - 64 bytes) [internally: FirstSecSum]
|
|
+# is 0 by adjusting the variable csum_value.
|
|
+#
|
|
+# Though isolinux checks the integrity with a separate checksum after all
|
|
+# data has been loaded this does not help with BIOSes that don't get even
|
|
+# the first 2k right. Hence this additional check. :-(
|
|
+#
|
|
+
|
|
+$file = shift;
|
|
+$list = "$file";
|
|
+$list =~ s/\.bin$/.lsr/;
|
|
+
|
|
+open F, $list;
|
|
+
|
|
+while(<F>) {
|
|
+ if(/^\s*\d+\s*(\S+)\s*0+\s*(\<\d+\>\s*)?csum_value\s*dd\s*0/) {
|
|
+ $ofs = hex $1;
|
|
+ }
|
|
+}
|
|
+close F;
|
|
+
|
|
+die "oops 1\n" unless $ofs && !($ofs & 3);
|
|
+
|
|
+# print "$ofs\n";
|
|
+
|
|
+open F, $file or die "$file: $!\n";
|
|
+
|
|
+$file_size = -s $file;
|
|
+
|
|
+sysread F, $buf, $file_size;
|
|
+
|
|
+close F;
|
|
+
|
|
+die "oops 1\n" if $file_size != length($buf);
|
|
+
|
|
+@x = unpack "V512", $buf;
|
|
+
|
|
+for ($sum = 0, $i = 16; $i < 512; $i++) {
|
|
+ $sum += $x[$i];
|
|
+}
|
|
+
|
|
+# printf "0x%08x\n", $sum;
|
|
+
|
|
+$ns = pack "V", -$sum;
|
|
+
|
|
+substr($buf, $ofs, 4) = $ns;
|
|
+
|
|
+open F, ">$file" or die "$file: $!\n";
|
|
+
|
|
+syswrite F, $buf;
|
|
+
|
|
diff --git a/core/isolinux.asm b/core/isolinux.asm
|
|
index 54f2e19..72be12a 100644
|
|
--- a/core/isolinux.asm
|
|
+++ b/core/isolinux.asm
|
|
@@ -308,6 +308,22 @@ initial_csum: xor edi,edi
|
|
mov [FirstSecSum],edi
|
|
|
|
mov [DriveNumber],dl
|
|
+
|
|
+ ; check whether the BIOS did load us correctly
|
|
+ cmp dl,80h ; some BIOSes try to do floppy emulation...
|
|
+ jb bios_err
|
|
+ cmp dword [FirstSecSum], byte 0
|
|
+ jmp bios_ok ; ##############
|
|
+ jz bios_ok
|
|
+bios_err:
|
|
+ mov si,broken_bios_msg
|
|
+ call writemsg
|
|
+ jmp short $
|
|
+broken_bios_msg db 13, 10, 'Cannot boot from this CD. Please try a BIOS update.', 13, 10, 0
|
|
+ align 4
|
|
+csum_value dd 0
|
|
+bios_ok:
|
|
+
|
|
%ifdef DEBUG_MESSAGES
|
|
mov si,startup_msg
|
|
call writemsg
|
|
@@ -336,6 +352,9 @@ initial_csum: xor edi,edi
|
|
cmp word [BIOSType],bios_cdrom
|
|
jne found_drive ; If so, no spec packet...
|
|
|
|
+%if 0
|
|
+ ; Some BIOSes don't like that call.
|
|
+
|
|
; Now figure out what we're actually doing
|
|
; Note: use passed-in DL value rather than 7Fh because
|
|
; at least some BIOSes will get the wrong value otherwise
|
|
@@ -356,6 +375,8 @@ initial_csum: xor edi,edi
|
|
call crlf
|
|
%endif
|
|
|
|
+%endif
|
|
+
|
|
found_drive:
|
|
; Alright, we have found the drive. Now, try to find the
|
|
; boot file itself. If we have a boot info table, life is
|
|
@@ -480,6 +501,9 @@ integrity_ok:
|
|
%endif
|
|
jmp all_read ; Jump to main code
|
|
|
|
+%if 0
|
|
+ ; doesn't work anyway, see above
|
|
+
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; Start of BrokenAwardHack --- 10-nov-2002 Knut_Petersen@t-online.de
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
@@ -671,6 +695,7 @@ spec_query_failed:
|
|
mov si,trysbm_msg
|
|
call writemsg
|
|
jmp .found_drive ; Pray that this works...
|
|
+%endif
|
|
|
|
fatal_error:
|
|
mov si,nothing_msg
|
|
@@ -936,8 +961,18 @@ maxtrans:
|
|
getlinsec_cdrom:
|
|
mov si,dapa ; Load up the DAPA
|
|
mov [si+4],bx
|
|
- mov [si+6],es
|
|
mov [si+8],eax
|
|
+
|
|
+ ; seems that some BIOSes have problems if the target
|
|
+ ; segment is 0 (don't ask); to avoid this, we normalize
|
|
+ ; the buffer address here
|
|
+ ; -> seen on Acer TravelMate C102Ti
|
|
+ and word [si+4],0fh
|
|
+ mov ax,es
|
|
+ shr bx,4
|
|
+ add ax,bx
|
|
+ mov [si+6],ax
|
|
+
|
|
.loop:
|
|
push bp ; Sectors left
|
|
cmp bp,[MaxTransferCD]
|
|
@@ -1770,6 +1805,7 @@ default_str db 'default', 0
|
|
default_len equ ($-default_str)
|
|
boot_dir db '/boot' ; /boot/isolinux
|
|
isolinux_dir db '/isolinux', 0
|
|
+zb 64
|
|
config_name db 'isolinux.cfg', 0
|
|
err_disk_image db 'Cannot load disk image (invalid file)?', CR, LF, 0
|
|
|