| blob | 1b16d34845c8218dd006a0d334d3a01f78f8e5af |
1 Starting with 1.47, changes marked with SYSLINUX/PXELINUX/ISOLINUX
2 apply to that specific program only; other changes apply to all of
3 them.
5 Changes in 3.70:
6 * PXELINUX: Support enhanced capabilities when running on top
7 of gPXE (http://www.etherboot.org/). In particular, support
8 URL-style syntax for filenames, and any protocol that gPXE
9 supports (except, currently, iSCSI and AoE.) This feature
10 is currently highly experimental.
11 * Substantial infrastructure changes to support files whose
12 length aren't known at open time (typically network
13 connections.) Please note that the semantics of some of the
14 comboot APIs have changed slightly; please see doc/comboot.doc.
15 * PXELINUX: We no longer require a TFTP server which supports
16 the tsize option for all transfers.
17 * PXELINUX: EXTREMELY EXPERIMENTAL: Support running on top of
18 the gPXE "PXEXT" PXE API extensions included with gPXE
19 0.9.4(?) or higher. This allows booting over other
20 protocols than TFTP.
21 * PXELINUX: Integrate with the gPXE source base; unified image
22 now included as "gpxelinux.0".
24 Changes in 3.62:
25 * Clean up garbage after "aborted." message.
26 * Clean up memdump.com filenames.
27 * Support SHA256 and SHA512 encrypted passwords.
28 * The shuffle library now can generate chained descriptors,
29 thus allowing pretty much arbitrarily complex memory maps.
30 * Handle command lines up to 2047 characters, the current
31 Linux kernel limit.
32 * vesamenu: support systems without linear framebuffer support
33 (sigh, what is this, 1993?) and 15-bit RGB modes.
34 * Move the label storage (for the command-line interface) to
35 high memory, removing the size limit and freeing up 64K of
36 low memory.
37 * Get rid of 4096-entry limit in the simple menu system.
38 * New hierarchial submenu support: see MENU BEGIN, MENU END,
39 MENU GOTO in doc/menu.txt.
40 * MENU QUIT allows creating a menu entry for returning to the
41 command line.
42 * ISOLINUX: Work around bug in certain Adaptec BIOSes,
43 patch by Bruce Robson.
44 * pngtopnm dependency removed from samples/ directory.
45 * Text documentation files (in doc/) renamed *.doc -> *.txt.
47 Changes in 3.61:
48 * EXTLINUX: fix crash when accessing an empty file.
49 * elf.c32: If a PHDR segment is present, load it.
50 * Fix SHA-1 and MD5 passwords.
51 * ISOLINUX: fix booting when mastered without
52 mkisofs -boot-info-table (broken since 3.50, sigh...)
53 * Handle BIOSes which emit multiple contiguous valid
54 memory regions in the e820 map.
56 Changes in 3.60:
57 * Support for "auxilliary data vector", a small amount of
58 writable storage. Currently only supported for EXTLINUX,
59 but the infrastructure is there for the other derivatives,
60 assuming a suitable storage location can be found.
61 * EXTLINUX: boot-once support (--once, --clear-once, and
62 --reset-adv).
63 * A command is now required to the EXTLINUX installer, i.e. at
64 least one of --install, --update, --once, --clear-once, or
65 --reset-adv.
67 Changes in 3.55:
68 * PXELINUX: as per RFC 5071, PXELINUX no longer requires the
69 use of the magic cookie option (208) for unencapsulated
70 options. Currently it does not require it for
71 vendor-encapsulated options (vendor-option-space) either,
72 but that MAY be reverted in the future if it causes
73 problems.
74 * Documentation text files moved to a common "doc" directory;
75 man pages from the Debian project added to the "man"
76 directory.
77 * Correct bug with self-overlapping memory areas when using
78 the shuffle interface.
80 Changes in 3.54:
81 * Add "menu separator", "menu indent", "menu disabled"
82 (see README.menu).
83 * vesamenu: fix handing of VESA modes with noncontiguous
84 memory buffers. In particular, Qemu/KVM sets up such a mode
85 when Cirrus Logic emulation is enabled (which is the
86 default.)
87 * Support for calling real mode functions using far calls,
88 with argument on the stack. This was implemented to support
89 the BIOS BBS specification, but subsequent experiments show
90 that the at least one of the most common BIOS cores, Award,
91 passes the presence check but doesn't actually implement the
92 functionality.
94 Changes in 3.53:
95 * Fix bugs related to the $PnP BIOS functionality on some
96 platforms.
97 * PXELINUX: Fix the "naked" version of :: (suppress prefix.)
98 * elf.c32: better error messages.
99 * Faster operation under Intel VT virtualization.
100 * PXELINUX: Fix DHCP bootfile option.
101 * mkdiskimage: Support more than 1024 cylinders.
102 * (Hopefully) fix installer on non-x86 platforms.
103 * Fix shuffle_and_boot_rm, used by linux.c32.
104 * Fix shuffle_and_boot_pm on 386/486.
105 * ISOLINUX (at least): fix bss memory overwrite hang.
106 * MBR: Fix booting from logical partitions.
107 * Code cleanups.
109 Changes in 3.52:
110 * Handle capitalized F-key commands in the menu system.
111 * Fix padding error when loading multiple ramdisks.
112 * Workaround for VMware crashing when trying to print a
113 message during early kernel boot (does not seem to work,
114 consider deleting.)
115 * chain.c32: add the ability to search for a specific MBR
116 signature at runtime.
117 * Fall back to the server identity option if the siaddr field
118 in the DHCP header isn't set. This seems to match the
119 behaviour of most PXE stacks.
120 * mkdiskimage: give the generated disk image an MBR signature.
121 * MEMDISK: Fix failures on some BIOSes.
122 * Simple menu system: new "MENU HIDDEN" option to not display
123 the menu unless the user presses a key.
124 * Simple menu system: support MD5-encrypted passwords (modern
125 Unix standard style, with "$1$" prefixes.)
126 * pcitest.c32: now functions as a full "lspci". Thanks to
127 Erwan Velu for this work.
128 * MEMDISK: Make EDD actually work.
129 * ISOLINUX: Fix for certain broken CD-ROM BIOSes which
130 randomly corrupted register FS.
131 * Simple menu system: fix memory overwrite bug that caused
132 some systems to lock up or behave weirdly.
133 * Fix building on 64-bit systems without a 32-bit libc installed.
135 Changes in 3.51:
136 * EXTLINUX: Fix failure to find the configuration file.
138 Changes in 3.50:
139 * New keywords allow the type of file to be specified in the
140 configuration file.
141 * It is now supported to load a different configuration file
142 with the CONFIG keyword.
143 * Fix API call 0x0019 (Read Disk.)
144 * MENU AUTOBOOT, MENU TABMSG, MENU PASSPROMPT allows
145 internationalization of menu messages.
146 * A new feature, TEXT HELP, allows the administrator to set
147 a multi-line help message for individual selections.
148 * Fix API call 0x0012 (Cleanup, shuffle and boot.)
149 * New API call "Cleanup, shuffle and boot to flat protected mode"
150 * New API call "Cleanup, shuffle and boot to real mode",
151 similar to API call 0x0012 but allows arbitrary register setting.
152 * Introduce a library interface for loading arbitrary binary
153 formats with relatively easily understood code. See
154 the elf.c32 module for an example on how to use it.
155 * New module "elf.c32", to load a protected-mode ELF kernel.
156 * MBR (old and new): Fix bug in CHS mode when LBA >
157 65535*sectors.
158 * vesamenu: fix decoding of palettized PNG images.
159 * Update the Linux kernel boot protocol.
160 * PXELINUX: Press Ctrl-N at the boot prompt to read out the
161 network info.
162 * Instead of the (non-existent) MAC, use the client identifier
163 for networks like Infiniband and Firewire/1394.
164 * Add a new INCLUDE command to the core syslinux parser.
165 * Allow binding help text to F11 and F12.
166 * F-key help now available in the simple menu system.
167 * Disabled the polling for ARP during idle. It is simply too
168 slow on some (broken!) PXE stacks.
169 * PXELINUX: also try to fetch the config file based on UUID.
170 * SYSLINUX/EXTLINUX: New RAID mode (-r) which calls the BIOS
171 to load the next device (typically the next drive) on boot
172 failure.
174 Changes in 3.36:
175 * MEMDISK: Disable EDD by default on floppy disks. EDD can be
176 enabled with the "edd" option and disabled with "noedd".
177 This (hopefully) should make Ghost work again.
178 * SYSLINUX: "unix" installer now uses Linux ioctls instead of
179 using libfat.
180 * New MBR which can boot from logical partitions.
181 * SYSLINUX: Fix bug in detecting special extensions which was
182 introduced in 3.35 :(
183 * PXELINUX: Unbreak chainbooting FreeBSD (and possibly others.)
185 Changes in 3.35:
186 * MEMDISK: New "safeint" mode.
187 * MEMDISK: Be more compliant with the PnP BIOS spec.
188 * MEMDISK: Turn on EDD support by default.
189 * MEMDISK: Try to work on some machines on which it would not
190 work when there was no floppy drive in the system.
191 * Simple menu system: fix serial console support (broken in
192 3.30).
193 * SYSLINUX: Support subdirectories. Like ISOLINUX, the
194 "current directory" is the directory in which syslinux.cfg
195 is found; this is searched for in the sequence
196 /boot/syslinux, /syslinux, /. As a side benefit, label names
197 like "linux-2.6.18" and "linux-2.6.19" are now supported.
199 To install ldlinux.sys in a subdirectory, pass the -d
200 directory option to the SYSLINUX installer.
202 This work was sponsored by slax.org (thanks, Tomas!)
203 * New API call: read disk.
204 * Invoke ONERROR on initrd load failure.
206 Changes in 3.31:
207 * The simple menu system (menu.c32 and vesamenu.c32) now
208 support loading more than one configuration file at a time,
209 using MENU INCLUDE or by specifying multiple filenames.
210 * The MENU COLOR statement can now control the shadowing mode.
212 Changes in 3.30:
213 * libcom32 extended to support graphics mode and graphical console.
214 * vesamenu.c32, new graphical version of the Simple
215 Menu System, see README.menu.
216 * New com32 modules by Erwan Velu do selection based on CPUID
217 or PCI devices present.
218 * RPM spec: add syslinux-tftpboot module; move syslinux by
219 default to the /usr/share/syslinux directory.
220 * RPM spec: extlinux is now a separate package.
222 Changes in 3.20:
223 * EXTLINUX: New options --install (-i) and --update (-U), to
224 make it clear if a boot loader should be installed or
225 updated. For now, defaults to --install for compatibility;
226 a future version will require one of these options.
227 * New library functions to load and place files in memory.
228 * mboot.c32 bug fixes.
229 * Remove 8 MB kernel size restriction.
230 * Add "klibc" target for building unix/syslinux and
231 extlinux/extlinux with klcc (klibc-1.4.27 or later.)
232 * PXELINUX: Fail (and eventually reboot) if no configuration
233 file was found.
234 * COM32 module by Erwan Velu to make decisions based on DMI
235 info.
236 * Fix issue where going back and forth between menus a lot
237 would cause a hang.
238 * ISOLINUX: Fix bug which made "cd boot sectors" not work.
240 Changes in 3.11:
241 * MEMDISK: Fix bug by which accessing the real floppy disk
242 as B: in MS-DOS was broken.
243 * Simple menu system: allow tweaking of the screen layout.
244 * Simple menu system: better command-line editing, correctly
245 handle command lines above 256 characters.
246 * PXELINUX: revert memory allocation change that caused
247 problems on some network cards.
248 * MEMDISK: Try work around a bug on some BIOSes when no
249 physical floppy disk is present in the system.
250 * Enable the 16550A FIFOs, if present, when doing serial
251 console.
252 * New "totaltimeout" command establishes a timeout without
253 regard for any user input.
254 * Simple menu system: timeout behaviour now more in line with
255 user expectations.
256 * Simple menu system: "ontimeout" should now work correctly.
258 Changes in 3.10:
259 * gcc 4.0.1 compilation fixes.
260 * Add support for querying the PCI BIOS in libcom32
261 (used by ethersel et al.)
262 * Fix PCI handing (ethersel etc) on several old chipsets (and
263 VMWare.)
264 * Try to deal with systems with broken EBIOS.
265 * New API call to do "localboot".
266 * New API call to query features.
267 * New API call to run kernel image, a lower-level call than
268 "run command". See comboot.doc.
269 * Fix for bug in EBIOS code discovered by Arwin Vosselman.
270 * NOESCAPE security fix.
271 * Comments are now recognized even without a space following #.
272 * Fix incorrect handling of mixes of entries with and without
273 MENU PASSWD.
274 * The idle API call now harmlessly returns failure if it is a
275 no-op. That way the caller can decide whether or not to
276 bother invoking it again.
277 * Temporarily disable the idle API call on PXELINUX, due to
278 some platforms on which the idle API call seems to hang; this
279 problem has not yet been debugged.
280 * MEMDISK: the handling of DOSEMU-headered images was broken;
281 fix it.
282 * EXTLINUX: symlinks are now supported.
283 * Simple menu system: N and P now work correctly as hotkeys.
284 * MEMDISK: more BIOS bug workarounds.
286 Changes in 3.09:
287 * gcc4 compilation fix.
288 * <BEL> (Ctrl-G) in message files now causes a beep.
289 * Reduce the command line to 511 characters; 1023 caused
290 memory overflows.
292 Changes in 3.08:
293 * SYSLINUX: Fix performance regression (-s mode always
294 enabled.)
295 * Add API function for idle loop.
296 * libutil: Add do_idle() function for idle loop, make
297 get_key() use it.
298 * libutil: Add SHA-1 and base64 functions.
299 * Simple menu system: add password support.
300 * EXTLINUX: Sparse files now handled correctly.
301 * EXTLINUX: Large directories now handled correctly.
302 * ALL: At the prompt, Ctrl-X now forces text mode.
303 * Fix configuration file parsing error, that could cause
304 hangs.
305 * Rewritten advanced menuing system from Murali Ganapathy.
306 * MEMDISK: New "bigraw" mode to work around certain broken
307 BIOS flash programs.
308 * COM32 module to boot Multiboot systems, including Xen. See
309 com32/modules/mboot.doc.
310 * Max command line changed to 1023 characters. Note that the
311 kernel proper still can only handle 255 characters without
312 patching, and COM16 binaries can only handle 125 characters.
314 Changes in 3.07:
315 * Fix chainloading (chain.c32).
316 * Fix zlib build problem.
317 * Use a private copy of <linux/ext2_fs.h>.
319 Changes in 3.06:
320 * Fix typo that caused the ramdisk to load in the wrong place.
322 Changes in 3.05:
323 * New API function "shuffle and boot"; allows COM32 modules to
324 load or construct (almost) arbitrarily complex objects,
325 e.g. a kernel and its initrd/initramfs in pieces, and have
326 the API core reorganize memory for booting. (A library API
327 for this function will be introduced in a later version.)
328 * The initrd= option now supports multiple filenames separated
329 by commas. This is mostly useful for initramfs, which can
330 be composed of multiple separate cpio or cpio.gz archives.
331 (Note: all files except the last one are zero-padded to a 4K
332 page boundary. This should not affect initramfs.)
333 * EXTLINUX: Fix API function 000Ah (get derivative-specific
334 info).
335 * libcom32/ethersel: Support PCI Config Mechanism #2 on
336 machines still infested with that hideous old hack.
337 * SYSLINUX: Fix directory-parsing bug.
339 Changes in 3.02:
340 * SYSLINUX: The "unix" installer now sets the MS-DOS
341 attributes (hidden, system, readonly.)
342 * COM32 library: build the .lnx (test modules for running
343 under Linux) as architecture native modules, in case
344 i386 devel libraries aren't installed.
345 * EXTLINUX: Hack for systems which don't have BLKGETSIZE64
346 defined in the standard header files.
347 * Simple menu system: minor aestetic improvements, and try to
348 work better over a serial console (speed, and readability on
349 monochrome terminal emulators.)
350 * New CONSOLE directive to control output on the video console
351 (useful for dealing with some broken serial-forwarding
352 BIOSes.)
353 * New com32 module "ethersel" for searching for an Ethernet
354 card and selecting the proper version of Etherboot.
355 * EXTLINUX: Allow the user to override the detected geometry.
356 Add help.
358 Changes in 3.01:
359 * EXTLINUX, SYSLINUX: Fix compile errors on some systems.
360 * EXTLINUX: Default to zipdrive geometry (64 heads, 32
361 sectors) if no other geometry can be detected.
363 Changes in 3.00:
364 * SYSLINUX: Support FAT32 and EDD. As an unfortunate
365 consequence, LDLINUX.SYS is no longer an ordinary file; it
366 is block-mapped at install time, which means it can only be
367 written using the syslinux installers.
368 * SYSLINUX: Reorganize the source code for the installers;
369 each one of the installers (dos, win32, unix, mtools) is now
370 built in its own subdirectory. In particular, "mtools" is
371 the unprivileged installer which uses mtools; "unix" is the
372 privileged installer which uses system calls.
373 * SYSLINUX: Completely rewritten DOS installer in C.
374 * ALL: "label" statement information is now stored in a
375 compressed format, which means that a lot more labels are
376 permitted (500-1000 in a typical configuration, but depends
377 on the complexity.)
378 * EXTLINUX: New derivative, which boots from an ext2/ext3
379 filesystem.
380 * SYSLINUX: The DOS and Win32 installers can now optionally
381 write the boot sector to a file instead of the real boot
382 sector. This is not supported in the Linux installers,
383 however.
384 * ALL: New NOESCAPE command, disables the "hold down the Shift
385 key to display the prompt" behaviour.
386 * New simple menu system, as an alternative to the advanced
387 menu system already present. See README.menu for details.
388 * PXELINUX: Filenames can now be prefixed with an IP address
389 or DNS name plus :: (e.g. 192.0.2.1::filename or
390 server.domain.com::filename), which downloads a file from an
391 alternate TFTP server, or just a :: (e.g. ::filename), which
392 suppresses the common pathname prefix. See pxelinux.doc.
393 * SYSLINUX: Add an -m option to the DOS and Win32 installers
394 to write an MBR and -a to mark the partition SYSLINUX is
395 being installed on active.
396 * MEMDISK: Give a way to query the boot loader type while
397 running MEMDISK; see memdisk/memdisk.doc and
398 sample/mdiskchk.c.
399 * mkdiskimage: substantially improved mkdiskimage which, among
400 other things, can now be used to initialize USB keys as
401 zipdrives; see README.usbkey for more information.
403 Changes in 2.13:
404 * MEMDISK: Fix command-line parsing "brown paper bag" class
405 bug.
406 * MEMDISK: Add "raw" mode to support the DOS boot disk from
407 WinME/XP, which seems to deliberately crash the system
408 when someone uses the "INT 15h mover" highmem API.
409 * Make "make install" do something sane for the com32
410 development environment.
411 * In the spec file, create a separate -devel RPM for the com32
412 development environment.
414 Changes in 2.12:
415 * Simple C library, based on klibc, for writing COM32
416 programs.
417 * Fix the handling of file length in loading of COM32
418 programs.
419 * MEMDISK: Work around a linker bug by rearranging the code to
420 not use the linker for the 16-bit code.
421 * SYSLINUX: If we're building on a machine without a Win32
422 (mingw) compiler, just skip building syslinux.exe.
423 * ISOLINUX: Support non-mkisofs mastering programs, at least
424 as long as the image is single-session. For best results,
425 ISOLINUX should be the only boot loader installed.
426 * MEMDISK: Allow the user to specify that the simulated disk
427 should be write-protected.
429 Changes in 2.11:
430 * ALL: Add an API call to get the configuration file name.
431 * SYSLINUX: Fix bug in 2.10 that prevented it from working
432 correctly for a lot of people.
433 * SYSLINUX: In the installer, make mtools a bit less fussy.
434 * Make the menu system compile with newer gcc's.
436 Changes in 2.10:
437 * MEMDISK: Handle images compressed with zip as well as with
438 gzip. Some Windows-based image tools apparently generate
439 these kinds of images by default. Patch by Patrick
440 LoPresti.
441 * Major menu improvement from Murali Ganapathy.
442 * ISOLINUX: Wonderfully sick and brilliant workaround for
443 severe bugs in certain Award BIOSes; from Knut Petersen.
444 * SYSLINUX: Fix for the nomtools installed, from Frederic
445 Pasteleurs.
446 * PXELINUX: Fix handling of IP numbers in the ranges
447 100-109 and 200-209.
448 * ALL: New option "allowoptions" (defaults to 1), which
449 controls if options are allowed on the command line or not.
450 * SYSLINUX: Support building under klibc (see the klibc
451 distribution for details.)
453 Changes in 2.09:
454 * SYSLINUX: Remove residual setuid crap from
455 syslinux-nomtools.
456 * Handle video pages correctly when using the API functions.
457 * Handle compiling on an x86-64 platform correctly.
458 * Menu system from Murali Krishnan Ganapathy; see the menu
459 directory for information.
460 * COMBOOT: Allow COMBOOT programs to change screen text mode.
461 * COMBOOT: Correct the documentation of how to detect
462 SYSLINUX from COMBOOT!!!!
463 * COMBOOT: Fix "get key without echo" API function.
464 * SYSLINUX: Fix bug that affected the API open function.
465 * ALL: Improve the E820 memory parser, to work around some
466 buggy BIOSes.
468 Changes in 2.08:
469 * Add new configuration command "ontimeout" to allow timeout
470 to have a different action than just pressing Enter.
471 * Add new configuration command "onerror" to allow a custom
472 command to be executed in case the kernel image is not found.
473 * Fix bugs in the COMBOOT/COM32 command-line parsing. APPEND
474 now works with COMBOOT/COM32 images.
475 * PXELINUX: Poll for ARP requests while sitting at the
476 prompt. This makes some boot servers a lot less unhappy.
477 * PXELINUX: Actually free sockets when we get a failure
478 (including file not found.) This bug would cause us to run
479 out of sockets and thus "go deaf" after a while.
480 * MEMDISK: Add an API to query for the existence of MEMDISK.
481 * SYSLINUX: Fix loading boot sectors (.bs/.bss) from floppy
482 disk.
483 * .c32 is now one of the extensions searched for
484 automatically.
485 * PXELINUX: RFBG.exe seems to randomly overwrite memory
486 location 0x5700. Thus, don't use it!
487 * PXELINUX: Change pathname length max from 63 to 127; change
488 max vkernels from 128 to 64.
489 * Support Ctrl-U -> kill entire command line input.
490 * The "samples" directory contains a (barely at all tested)
491 chain loading example, chain.c32, which may be used to
492 chainload local floppy disks and hard disks. Use with
493 "chain fdN" or "chain hdN [partition]"; N = 0 for the first
494 drive of each type.
496 Changes in 2.07:
497 * MEMDISK: Workaround for BIOSes which go into a snit when
498 they get a RESET command for the floppy system when there is
499 no floppy in the system.
500 * PXELINUX: Add "ipappend 2", which passes the hardware
501 address of the boot interface to the kernel as a
502 command-line option.
503 * mkdiskimage: fix the generation of the end limit.
504 * PXELINUX: Fix multiple bugs in chainloading of other NBPs.
505 * MEMDISK: Fix bug that would occationally cause "ran out of
506 input data" when using compressed disk images.
507 * SYSLINUX: Updates for the win32 installer (from Lars Munch.)
508 * PXELINUX: PXELINUX-specific options are now recognized both
509 in a vendor-option-space (a.k.a. type 43 encapsulated) as
510 well as in a site-option-space (unencapsulated.)
511 * COM32: Don't crash when DS != 0.
512 * COMBOOT/COM32: Make file reading work correctly. Thanks to
513 Phung Chi Kien for submitting a test program.
515 Changes in 2.06:
516 * ALL: Fix problem that would occationally cause a
517 boot failure, depending on the length of the kernel.
518 * ISOLINUX: Fix problem that would occationally cause a
519 boot failure, depending on the length of directories.
520 * SYSLINUX: Win32 installer now flushes buffers.
521 * ppmtolss16: Be fully compliant with the PNM spec;
522 actually process comments in the header and odd
523 alignments of the various parameters, as well as
524 "plain" (not raw) files and PBM and PGM files.
525 * PXELINUX: Lower the default MTU to 1472 in order to deal
526 with systems with slightly nonstandard MTUs, and PXE
527 stacks which don't defragment correctly. Unfortunately this
528 is very hard to test dynamically.
530 Changes in 2.05:
531 * PXELINUX: Add a default query based on the hardware address
532 of the boot device. This is in lower case hexadecimal form
533 separated by dashes and including the hardware type, for
534 example, the Ethernet (type 1) address 88:99:AA:BB:CC:DD
535 would query the file pxelinux.cfg/01-88-99-aa-bb-cc-dd.
536 * PXELINUX: Fix bug involving non-IP-based config file names.
537 * SYSLINUX: New installer for WinNT-based systems, from Lars
538 Munch.
539 * MEMDISK: Fix handling of memory region overlap when
540 decompressing. Thanks to Mikhail Kupchik for identifying
541 the problem.
543 Changes in 2.04:
544 * ALL: Reclaim even more low memory by observing that
545 comboot_seg == real_mode_seg is perfectly fine, and by the
546 fact that the 1000h segment managed to get unused in all
547 derivatives...
548 * PXELINUX: Attempt to negotiate full Ethernet-sized blocks
549 (1468 bytes) using the blksize option.
550 * SYSLINUX: Resurrect the old no-mtools version of the
551 installer, although as a root-only tool. Some distributors
552 have indicated that they need a small standalone installer.
553 * MEMDISK: Fix a memory offset computation error when
554 installing compressed disks which generally would cause
555 1 MB of memory to be wasted.
556 * MEMDISK: Fix installing the E820 memory map. Calling
557 INT 15h AX=0E820h with MEMDISK 2.03 loaded would give a
558 completely corrupt memory map.
559 * SYSLINUX: Make libsyslinux a dynamic library, so that it can
560 be updated separately from client programs. The whole idea,
561 after all, is to enable alternate programs to become
562 syslinux installers.
563 * Include an rpm spec file in the distribution, so rpmbuild
564 -ta works.
566 Changes in 2.03:
567 * Actually support comment lines in the configuration file.
568 * PXELINUX: Try to resolve some problems with stack switches.
569 * PXELINUX: Handle PXE stacks with broken routing.
570 With these workarounds, the remote install PXE boot floppy
571 (rbfg.exe) from Argon Technologies should work correctly.
572 * Fix problems with Perl scripts in UTF-8 locales.
573 * You probably need NASM 0.98.34 or later to compile this
574 version. 0.98.36 is recommended.
575 * MEMDISK: Now supports gzip compressed images.
577 Changes in 2.02:
578 * SYSLINUX: Security flaws have been found in the SYSLINUX
579 installer when running setuid root. Rewrite the SYSLINUX
580 installer so it uses mtools instead. It therefore now
581 requires mtools (specifically mcopy and mattrib) to exist on
582 your system, but it will not require root privileges and
583 SHOULD NOT be setuid.
585 Changes in 2.01:
586 * MEMDISK: Fix memory sizing bug when the ramdisk crosses the
587 16 MB boundary.
588 * MEMDISK: Add a "pause" option to stop immediately before
589 booting, to read off the messages.
590 * MEMDISK: Support disk images with DOSEMU headers.
591 * Update the mkdiskimage script to handle newer mtools
592 versions, and be able to generate disk images with DOSEMU
593 headers (controlled by the -d option).
594 * Fix the COM32 sample program.
595 * PXELINUX, ISOLINUX: Fix some COMBOOT API calls.
596 * PXELINUX: Doc fix.
597 * Build SYSLINUX into a small library for encapsulation into
598 other programs (however, please keep in mind this is a GPL'd
599 library.)
600 * SYSLINUX: Make installer work with "owner" in /etc/fstab.
601 * SYSLINUX: Fix issue with working on nonpartitioned hard disk
602 devices. THIS CONFIGURATION IS NOT RECOMMENDED.
604 Changes in 2.00:
605 * ALL: Add support for "COM32" (32-bit COMBOOT) images.
606 * ALL: Add an API for COMBOOT/COM32 images. See comboot.doc
607 for details. There is a C development environment for
608 COM32 being created; it should be ready at some point in
609 the future.
610 * Fix mbr.asm so that it actually works.
611 * SYSLINUX: The syslinux installer *SHOULD* now be safe to
612 run setuid root.
613 * PXELINUX: Fix bug where PXELINUX would override random
614 chunks of the UNDI code segment! Thanks to Kevin Tran for
615 finding this bug.
616 * ISOLINUX: Fix a bug related to slashes in pathnames.
617 * ISOLINUX: Fix a bug in handling initrds over 128 MB.
618 * ALL: Make the <Ctrl-V> key print out the version; this is
619 to help debugging.
620 * Add a small script, mkdiskimage, to create a DOS-formatted
621 hard disk image using mtools. This may be useful in
622 conjunction with MEMDISK.
623 * ISOLINUX: Search for a /boot/isolinux directory as well as
624 /isolinux.
625 * ALL: Fix a bug related to very long configuration files.
626 * PXELINUX: Work around a NASM bug which would result in no
627 delay before reset if an error occurs.
629 Changes in 1.76:
630 * ISOLINUX: Remove code no longer used which caused hangs on
631 some Toshiba laptops.
633 Changes in 1.75:
634 * ALL: NASM 0.98.32 or later is now required to build
635 SYSLINUX from sources.
636 * SYSLINUX: put back in the workaround for the BIOS floppy
637 table. This seems to be a requirement for "extended" floppy
638 formats to work correctly.
639 * SYSLINUX: No longer warn if one is trying to boot on a 286
640 or older. The above BIOS workaround no longer fits if the
641 requirement to use only 8086-compatible code in the early
642 boot is maintained. It made sense in 1994, but in 2002 a
643 286 or older is a museum object.
644 * SYSLINUX: Use a downright bizarre, stateful algorithm to try
645 to guess the maximum transfer size. I am *hoping* this will
646 cut down on the number of systems for which -s is required
647 to work at any acceptable speed.
648 * ISOLINUX: Add a few more workarounds for various broken El
649 Torito BIOSes.
650 * Make sure .depend files aren't accidentally packed...
651 * ALL: Fix bugs in the extension-detect code; this caused
652 files like COMBOOT images and CD boot sectors to be
653 mis-identified as Linux kernels and rejected.
654 * ALL: Fix the return from COMBOOT.
655 * ALL: Do some of the early groundwork for supporting DOS
656 system calls in COMBOOT.
657 * Get rid of unnecessary "near" directives, making the code
658 bigger.
659 * PXELINUX: Put the PXE stack back in the init state before
660 invoking a chain-loaded NBP.
661 * PXELINUX: Actually found the combination of calls that
662 allows some (most?) PXE 2+ stacks to be unloaded from memory
663 properly.
664 * PXELINUX: Add "keeppxe" command-line option to disable
665 the standard unloading of the PXE stack.
667 Changes in 1.74:
668 * SYSLINUX: fix bug that would cause valid kernel images to be
669 labelled "invalid".
671 Changes in 1.73:
672 * Work on removing gratuitous differences between modules.
673 * Break up the source in common and module-specific files.
674 * PXELINUX: Allow chaining of other PXE NBPs.
675 * ISOLINUX: Allow loading "CD-ROM boot sectors".
676 * ALL: generalize the definition of a boot sector/NBP.
678 Changes in 1.72:
679 * PXELINUX, ISOLINUX: Fix bugs in the new core code.
681 Changes in 1.71:
682 * Fix a "brown paper bag" class bug in the new core code.
684 Changes in 1.70:
685 * Major code restructuring.
686 * Relax the conventional memory limits somewhat.
687 * MEMDISK: Set up the "version number string" pointer in the
688 header correctly.
689 * SYSLINUX: Fix, again, "the bug that won't die": the use of
690 the offset parameter with the SYSLINUX installer.
691 * SYSLINUX: Fix possible superblock corruption problem in the
692 SYSLINUX installer.
694 Changes in 1.67:
695 * Handle bug in the location of initrd.
697 Changes in 1.66:
698 * MEMDISK: Make compile with newer versions of gcc.
700 Changes in 1.65:
701 * ISOLINUX: Support booting disk image files (to boot DOS or
702 other non-Linux operating systems), *IF* the BIOS works
703 correctly; unfortunately many BIOSes apparently don't.
704 * Support Linux boot protocol version 2.03 (explicitly
705 specify the initrd address limit.)
706 * Handle small "pseudo-kernels"; images that use the Linux
707 kernel boot protocols but are less than 64K in size.
708 * MEMDISK: New subsystem; this is a driver which allows
709 legacy OSes to boot using an in-memory simulated disk.
710 See memdisk/memdisk.doc for more info.
711 * PXELINUX, ISOLINUX: Correctly handle files larger than 65535
712 blocks (32 MB for PXELINUX, 128 MB for ISOLINUX.)
713 * PXELINUX: Make a best-effort attempt at freeing all memory
714 claimed. From the looks of it, it will fail on most PXE
715 stacks.
717 Changes in 1.64:
718 * Limited support for hardware flow control when using a
719 serial port console.
720 * Support specifying the serial port I/O address explicitly.
721 * Make DOS installer hopefully behave more nicely when used on
722 recent Windows versions.
723 * Fix returning to text mode when a font has been specified.
724 * Attempt to detect missing serial port hardware and disable
725 the serial port if there is nothing there.
727 Changes in 1.63:
728 * Make the ppmtolss16 program handle color conversion more
729 correctly.
730 * Clean up "make install" target, honour INSTALLROOT if it
731 exists.
732 * SYSLINUX: Fix stack-smash bug identified by Steffen
733 Winterfeldt.
734 * Hopefully fix return-to-text-mode on some graphics cards.
735 * ISOLINUX: Bug workaround for Award BIOS 4.51, and perhaps
736 other buggy BIOSes as well.
738 Changes in 1.62:
739 * PXELINUX: Allow the DHCP server to override the
740 configuration file name and pathname prefix, using
741 "site-specific" DHCP options.
742 * PXELINUX: Documentation fixes.
743 * PXELINUX: Fix the "ipappend" option; the last two values
744 were reversed vs. what the kernel expected.
745 * Introduce a way to return to text mode once we are already
746 in graphics mode. This may be useful for F-key help
747 screens.
748 * Fix several bugs in the way return to text mode was handled.
750 Changes in 1.61:
751 * ISOLINUX: Support full pathname searches. Max length for a
752 pathname is 255 characters. As a result, only 64 "label"
753 statements are supported in ISOLINUX.
754 * PXELINUX: Max filename length extended to 63 characters.
756 Changes in 1.60:
757 * Add support for graphical splash screens.
758 * Add mode control characters, which allows you to control
759 message display output depending on output mode (text,
760 graphics, or serial port.)
761 * ISOLINUX: New program, which boots Linux from a CD-ROM
762 without using floppy emulation mode. See isolinux.doc for
763 more details.
764 * PXELINUX: Don't search for boot sector file types, since
765 they don't work anyway.
766 * SYSLINUX: Document the LOCK command for Win9x, and the error
767 dialog box for WinNT/2K.
769 Changes in 1.54:
770 * PXELINUX: Fix code for finding !PXE from PXENV+. This was
771 due to a spec bug; match the most recent spec since that
772 seems to be what implementations actually do.
773 * SYSLINUX: Add some smarts to the boot sector, which
774 hopefully should reduce the number of systems which require
775 stupid mode ("syslinux -s").
776 * PXELINUX: Document further some of the pathologies with old
777 PXE stacks.
778 * When specifying a "default" command line, no longer
779 automatically appent "auto". See the "DEFAULT" command in
780 syslinux.doc for more information.
781 * PXELINUX: Clean up the allocation of local socket numbers.
783 Changes in 1.53:
784 * PXELINUX: Rename pxelinux.bin to pxelinux.0, to match what
785 most PXE servers seem to expect.
786 * PXELINUX: Update the DHCP/boot server setup documentation.
787 * PXELINUX: Support new "localboot" option for "label"
788 sections.
789 * PXELINUX: More robust parsing of DHCP/boot server packets.
790 * PXELINUX: Include a small utility program "gethostip" to
791 compute hexadecimal IP addresses.
793 Changes in 1.52:
794 * PXELINUX: Fix bugs introduced by new A20 code. (SYSLINUX
795 has also been changed for code consistency reasons, but I'm
796 pretty sure the changes are don't care on SYSLINUX.)
797 * Documentation updates.
798 * PXELINUX: Add "ipappend" option to generate an ip= option to
799 the kernel.
801 Changes in 1.51:
802 * PXELINUX: Not all PXE stacks fill in the IP address for a
803 type 3 cached info query. Use a type 2 cached info query
804 for this information (only.)
805 * Yet another attempt at A20 coding. Now support BIOS call
806 15:2401 as well, and handle machines which always have A20
807 on separately.
808 * Support memory detection using INT 15h, AX=0E820h. BIOS
809 manufacturers have apparently gotten sloppy about keeping
810 INT 15h, AX=0E801h working properly.
811 * Don't issue <CR><LF> onto the serial port when we're doing
812 screen wraparound.
814 Changes in 1.50:
815 * Yet another A20-code update. It seems some "legacy-free"
816 machines and embedded gear simply don't have a KBC to talk
817 to, and that waiting for one will wait forever. Sigh.
819 Changes in 1.49:
820 * SYSLINUX: Implement a hack for BIOS drivers which hog significant
821 chunks of low memory during boot. (Note: PXELINUX already
822 had this modification. SYSLINUX does still require that the
823 low 512K is available; PXELINUX requires 384K. Machines
824 with a physical memory hole in the low 640K cannot boot
825 Linux no matter what.) Depending what the reason is for the
826 memory hole, a new kernel (2.4.0-test3-pre3 or later) may be
827 required.
828 * SYSLINUX: Default installer binary now compiled against
829 glibc 2.1. If this is inappropriate for your system and you
830 still want to use the offical version of SYSLINUX, please
831 follow the instructions in "distrib.doc" to rebuild the
832 installer.
833 * SYSLINUX: Linux installer program now supports -o <offset>
834 option which does a loopback mount with the
835 -o loop,offset=<> option. Useful to run SYSLINUX on an
836 individual partition of a whole-harddisk image.
837 * Include the source code to a Master Boot Record (MBR)
838 functionally equivalent to the one installed DOS except it
839 includes EBIOS support, and should be resistant to geometry
840 changes. The MBR code is public domain.
841 * PXELINUX: Fix "double p" bug: if the tftp prefix was null,
842 all filenames would get a "p" preprended, e.g.
843 "ppxelinux.cfg" and "pvmlinux".
845 Changes in 1.48:
846 * PXELINUX: Workaround for PXE ROMs based on the Intel PXE PDK
847 3.0 build 071 and earlier: missing !PXE structure pointer.
848 * PXELINUX: Handle larger BOOTP/DHCP packages.
849 * PXELINUX: The command line passing was broken; fix.
850 * PXELINUX: Make COMBOOT images work.
851 * PXELINUX: Documentation on how to make booting work using
852 the PDK 3.0-derived clients, which aren't so generous as to
853 allow booting with only "PXEClient" specified.
855 Changes in 1.47:
856 * PXELINUX: RFC 1123 states that a TFTP implementation MUST
857 use adaptive timeout, "at least an exponential backoff of
858 retransmission timeout is necessary." Implement a very
859 simple exponential backoff for retransmits.
860 * PXELINUX: Updated documentation, including pointer to new
861 TFTP server.
862 * PXELINUX: When sending ERROR due to bad OACK, use the proper
863 destination port number (why are TFTP port numbers so odd?)
864 * PXELINUX: If the boot dies in the middle somewhere,
865 eventually give up and reset the machine (unattended
866 operation.)
868 Changes in 1.46:
869 * New program PXELINUX to do network booting using a
870 PXE-compliant (Pre-Execution Environment) network booting
871 PROM. See pxelinux.doc for details.
873 Changes in 1.45:
874 * Serial console support. See syslinux.doc for details.
876 Changes in 1.44:
877 * Change HIGHMEM_MAX to 38000000h to (hopefully) avoid the
878 kernel stepping on it; 3f000000h was apparently a higher
879 limit than the kernel used!
881 Changes in 1.43:
882 * Add sys2ansi.pl script to display the contents of a
883 colorized SYSLINUX file.
884 * Changed the io_delay once again, after a report that the
885 old delay port causes hangs on some systems.
887 Changes in 1.42:
888 * Frob the "fast A20 gate" port as well as the keyboard
889 controller; will this help systems with problems?
890 * Be even more paranoid about A20, unfortunately even this
891 seems to be not paranoid enough... what I don't understand
892 is that if there is hardware out there *this broken*, how
893 can it run Linux at all? Report an error message rather
894 than hang forever if A20 is stuck.
895 * Include some intermediate files in the distribution, plus
896 provide a "make installer" target for distributors to relink
897 the install programs only. I would prefer the syslinux boot
898 loader proper to be "binary clean" for debuggablity -- use
899 "make clean ; make installer" to rebuild the installers only.
901 Changes in 1.41:
902 * Don't get confused by directories, volume labels, or VFAT
903 long names.
904 * Use INT 15h, AX=0E801h to query memory size before trying
905 INT 15h, AH=88h. This not only provides more headroom
906 between the kernel and the initrd on large-memory machines,
907 but it appears some recent BIOSes actually have started
908 returning garbage for the AH=88h (older) call.
909 * Trust high memory beyond the 15 MB mark if the user has
910 specified it, or if obtained with INT 15h, AH=0E801h (with
911 no memory holes above 1 MB.)
913 Changes in 1.40:
914 * Increase A20M delay and put in a test to avoid problems on
915 certain IBM Thinkpads (thanks to Donnie Barnes of RedHat
916 for vital info on this one.)
917 * Support COMBOOT style boot command images.
918 * Support chain loading (foreign operating systems, e.g. DOS).
919 * Include a new "copybs" DOS utility to copy a boot sector to
920 a file (under Linux, use "dd".)
921 * Fix the DOS installer to work for disks over 32 MB.
922 * SYSLINUX should now handle disks with more than 65536 tracks.
924 Changes in 1.37:
925 * Fix a bug that caused "label" statements in syslinux.cfg to
926 not be handled properly.
927 * Updated the documentation. Among other things, we now allow
928 up to 128 "label" statements.
930 Changes in 1.36:
931 * Fix for booting old (pre-initrd) kernels.
932 * It seems at least some versions of OS/2 doesn't set up all
933 the fields in the superblock correctly. Account for that.
934 * Fix bug that caused boot failure when using the mem= option.
936 Changes in 1.35:
937 * Loading from partitions now should work properly. (Actually
938 tested, this time. You should even be able to dd a floppy
939 to a partition and boot from it.)
940 * Removed large workaround code for an alleged ancient BIOS
941 bug I have never actually seen. The -s option should work
942 on those machines, anyway.
943 * Support for simple keyboard remappings, same as used by
944 LILO (once again to support localization.) The program
945 keytab-lilo.pl from the LILO distribution included to
946 generate such maps.
947 * Added a "safe, slow and stupid" (-s) option to the
948 installers. This option will lobotomize the boot sector to
949 hopefully work on even very buggy BIOSes.
951 Changes in 1.34:
952 * Ability to load a VGA font on bootup (for localized Linux
953 distributions.)
955 Changes in 1.33:
956 * Bug fix in the Linux installer.
957 * Added a workaround for a bug in certain AMI/Intel BIOSes
958 when booting from CD-ROM.
959 * Documentation changes.
961 Changes in 1.32:
962 * FAT16 filesystems are now supported.
964 Changes in 1.31:
965 * Now compiles under Linux, using NASM, rather than using
966 Turbo Assembler under DOS. See http://www.cryogen.com/Nasm
967 for information about NASM.
968 * Linux-hosted SYSLINUX installer, as well as a
969 rewritten DOS installer (now is written in assembler, so we
970 don't need Turbo C.)
972 Changes in 1.30:
973 * Added support for loading bzImage and initrd loading, and made
974 SYSLINUX new-setup-code aware (SYSLINUX 1.30 id=0x31).
975 * Added LILO-style kernel labels; see the LABEL and IMPLICIT
976 keywords in README file.
977 * Added support for colorization of intro and help screens.
978 * The vga= option is now handled correctly.
979 * Massive rewrite of large chunks of the code in order to
980 support the first two new features.
982 Changes in 1.20:
983 * Added simple online help at the "boot:" prompt.
984 * Removed 2880K image as I no longer have access to such a
985 floppy drive. (Donations accepted!!)
986 * Decided to distribute the source in a subdirectory rather
987 than in a nested zipfile.
989 Changes in 1.11:
990 * Removed a sanity check which would cause booting to fail on
991 Phoenix BIOS version 4.03. Apparently this BIOS is buggy.
993 Changes in 1.10:
994 * Added configuration file SYSLINUX.CFG. This file contains all
995 configurable options, and can be edited from any OS which can
996 access an MS-DOS filesystem; there is no longer a need to run
997 SYSLINUX.EXE except to write the boot sector.
998 * Default command line now given by "default" line in config
999 file.
1000 * LINUXMSG.TXT and BOOTMSG.TXT hard-coded file names replaced by
1001 "display" and "prompt" lines in config file.
1002 * LILO-style option appending now supported ("append" line in
1003 config file).
1004 * Prompt timeout is now supported ("timeout" line in config
1005 file). The timeout is cancelled when anything is typed on the
1006 command line.
1007 * Pressing <ESC> or <Ctrl-C> at the Loading... stage now aborts
1008 the kernel loading in progress and returns the user to the
1009 boot: prompt.
1010 * The installer now automatically sets the READONLY flag on
1011 LDLINUX.SYS.
1012 * Added 2880K disk image.
1014 Changes in 1.03:
1015 * Fixed bug that would prevent booting from double-density
1016 floppies and other DOS filesystems with multiple sectors per
1017 cluster.
1018 * Added 720K disk image.
1019 * Changed default kernel name on disk images to LINUX.
1021 Changes in 1.02:
1022 * Fixed bug that would garble the command line on recent kernels
1023 with more than 4 sectors of setup code (this wasn't really a
1024 *bug*; rather, a kernel change broke the code. Unfortunately
1025 the Linux boot interface is still sorely undocumented).
1026 * Added BOOTMSG.TXT file support (message file which does not
1027 force display of the boot prompt).
1029 Changes in 1.01:
1030 * Fixed bug on some (most?) 386 BIOSes would require two boot
1031 attempts.