dosboot(8): remove XMS-specific code. The boot process has been broken for over
a decade, and its relevance has diminished due to the availability of other boot
options.

PR port-i386/58624

branches: 1.38.2;
i386: stand: Adjust for DOS-routine migration

i386: stand: Switch to libsa/getopt, NFCI

x86/dosboot: Drop no-longer-available -DSLOW for libz

It should be lost during merge from upstream.

We may introduce a similar hack again, if it is *really* required;
inflate_fast() may be dropped by using slow path unconditionally.

x86/dosboot: Do not page-align data segment

4K alignment is too heavy burden for COM executable with 64K limit :)

Fix binary size overflow for clang/amd64.

x86/dosboot: Allow NULL dereference to fetch command line arguments

DOS command line arguments are provided as struct psp at 0x0000;
see doscommain.c.

Recent versions of gcc and clang are clever enough to optimize code
block involving NULL dereference into ud2 insn.

Sprinkle -fno-delete-null-pointer-checks to doscommain.c to
prevent this behavior.

Note that dosboot.com for netbsd-9 and later was broken due to
this ``over optimization''. gcc 5.5.0 and clang 4.0.0 in netbsd-8
generate correct codes without this workaround.

XXX
Are there still use cases for dosboot.com? Does anyone want to
boot NetBSD from real-mode DOS in 2023?

branches: 1.33.26;
Consistently use ${RELEASEDIR}/${RELEASEMACHINE} instead of
${RELEASEDIR}/${MACHINE} (Paul Ripke)

Add multiboot 2 support to x86 bootloaders

multiboot 2 is required to boot Xen on an EFI system.
This also require a kernel patch for properly discovering
the ACPI RSDP, which is available after 20190912, in
src/sys/arch/x86/acpi/acpi_machdep.c 1.26-1.28

There are a few missing bit in this multiboot 2 implementation
(which are unused by Xen):
- Header tags Address, Freambuffer, and Relocatable are ignored
- Tags APM and Network are not provided
- Tags ACPI old and ACP new are only provided for ACPI boot
- Tag boot device does not provides the subpart (BSD disklabel partition)

Notes:
- multiboot2 is disabled in dosboot, otherwise the binary
gets too big and build fails.
- in src/sys/arch/i386/stand/efiboot, consinit() is renamed
as efi_consinit() to avoid prototype conflicts in src/sys/sys/systm.h

branches: 1.31.2; 1.31.6;
- Disable MKSANITIZER
- Redo using NOPIE
- Add NORELRO

branches: 1.30.10; 1.30.16;
We'll define the kernel types for standalone code.

Define _KERNTYPES for things that need it.

branches: 1.28.6;
Reduce amount of -no-integrated-as on x86 as .code16 is now supported by
LLVM.

branches: 1.27.6; 1.27.10;
Apply the following patch submitted by Evgeniy Ivanov:
http://mail-index.NetBSD.org/tech-kern/2011/12/15/msg012226.html
http://mail-index.NetBSD.org/tech-kern/2011/12/17/msg012229.html

- add 'ls' op to struct fs_ops to support ls command on each fs,
enabled by -DLIBSA_ENABLE_LS_OP and SAMISCMAKEFLAGS+="SA_ENABLE_LS_OP=yes"
in libsa
- split sys/lib/libsa/ufs_ls.c into UFS specific part and MI part (ls.c)
that opens the target fs and calls fs-depedent XXX_ls() functions
- add a ls op for ext2fs
(all other fs than ufs and ext2fs don't have actual ls ops yet)
- replace existing MD ufs_ls() calls with this new MI ls()

The original patch was written for i386 and ext2fs.
zaurus zboot has been tested by nonaka@.
ews4800mips and x68k loaders have been tested by me (with several fixes).
landisk might be okay since it was almost copied from i386.

XXX1: "ls" op in fs_ops looks a bit inconsistent, but we will be able to
replace it with real fs ops like readdir if it's really worth
XXX2: someone might have to check sys/arch/ia64/stand/efi/libefi/efifs_ls.c

branches: 1.26.4; 1.26.8;
Disable integrated assembler for files that use .code16 or .code32 for
now. Disable Clang completely for bootxx and netboot for now until the
size issue has been sorted out.

branches: 1.25.4; 1.25.6;
Remove extra trailing slash in ${S} path.

branches: 1.24.2; 1.24.8;
disable PIE for boot code.

branches: 1.23.104; 1.23.108; 1.23.114;
Add -DSLOW to reduce the size of libz a bit.

Change all .S files to use .code16 and .code32
Support 32bit addresses >64k as valid on bios calls.
Move stack for dosboot and biosboot to >64 so stack doesn't hit data.
Use disk sector number passed by mbr code to select default partition
(the mbr code doesn't do this yet).
NB only biosboot and dosboot have been tested so far.
(changes approved by christos and fvdl)

Install release files under "${RELEASEDIR}/${MACHINE}/..." instead of
"${RELEASEDIR}/...".

${RELEASEDIR} is never cleaned , and ${RELEASEDIR}/${MACHINE} is only
cleaned if UPDATE is not defined.

branches: 1.20.2;
Cleanup of i386 bootloader building:
* Add separate directories for the individual netboot ROMs and
always build them.
* Each bootloader Makefile explicitly specifies the start file
and link address it wishes to use.
* genprom becomes a proper host program.
* Make sure all generated files get cleaned up.
* Set BINDIR in Makefile.inc
* Add compressed image support to pxeboot.
* Make pxeboot use the default serial console speed (9600).

MKfoo=no -> NOfoo

branches: 1.18.4;
g/c COMPAT_OLDBOOT from bootblocks, sprinkle some const
bump bootblock version to 2.10

branches: 1.17.4;
Get RELEASEDIR setting from /etc/mk.conf. Fixes misc/11104 by Markus Kurek.

Fix to work with objdir.

install dosboot.com in the release(7) hierarchy.

Enable "old partition ID" compatibility by default, just as in biosboot.

branches: 1.13.2; 1.13.14;
add prototypes, use ufs_ls() from mi libsa,
compile with -Wall -Wmissing-prototypes -Wstrict-prototypes -Wno-main

define VERSIONFILE, from John Darrow <John.P.Darrow@wheaton.edu>
per PR port-i386/7336

branches: 1.11.2; 1.11.4;
convert from NOxxx= to MKxxx=no.
include <bsd.own.mk> if testing a MKxxx variable.

Add exec.c here and bump version for elf.
XXX: This code has not been tested!

Use the "proginstall" rule from <bsd.prog.mk> to get the UPDATE
behaviour right.

Make new memory detection default.
Introduce a new option, "CONSERVATIVE_MEMDETECT", which disables the
new BIOS calls.

Prepare definition for EXTENDED_MEMDETECT.
Not yet default.

branches: 1.6.2;
New welcome banner code, modeled after NetBSD/hp300's boot program
welcome banner code. Includes additional build information, and it
generally nicer to look at.

Allow to boot from DOS if a XMS manager is installed.
XMS is recognized and used as temporary buffer for the kernel image.
The processor must still be in real mode at program start, so EMM386
or QEMM are not allowed. W*95 is OK.
Written by Martin Husemann (pr port-i386/3336).
Completely separated from other bootloaders for sanity.

Remove some relicts from the time before libsa/Makefile got
"SAMISCCPPFLAGS".
Enable -Wall.

Override the proginstall target to do our special hackery. (Yuck.)

Make this work with obj* dirs.

branches: 1.1.1;
Initial revision

i386: stand: Adjust for DOS-routine migration

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.10.78; 1.10.86; 1.10.92;
merge ktrace-lwp.

De-__P().

Consistently pass 'int *' arguments to parsebootfile.

Fix build breakage. Oops.

remove license clauses 3 and 4 from my cpoyright notices

Fix signed/unsigned warnings.

branches: 1.5.2; 1.5.24;
g/c COMPAT_OLDBOOT from bootblocks, sprinkle some const
bump bootblock version to 2.10

branches: 1.4.16;
add prototypes, use ufs_ls() from mi libsa,
compile with -Wall -Wmissing-prototypes -Wstrict-prototypes -Wno-main

branches: 1.3.12;
Put name of booted file into a "bootinfo" structure.
(not for DOS files for now, we don't know the absolute path)

branches: 1.2.4;
Purely cosmetic whitespace/indentation changes (mmm, indent(1))

branches: 1.1.1;
Initial revision

i386: stand: Migrate DOS support routines from `lib` to `dosboot`

i386: stand: Migrate DOS support routines from `lib` to `dosboot`

i386: stand: Adjust for DOS-routine migration

i386: stand: Migrate DOS support routines from `lib` to `dosboot`

i386: stand: Adjust for DOS-routine migration

i386: stand: Migrate DOS support routines from `lib` to `dosboot`

dosboot(8): remove XMS-specific code. The boot process has been broken for over
a decade, and its relevance has diminished due to the availability of other boot
options.

PR port-i386/58624

branches: 1.33.34;
Remove dead code.

branches: 1.32.30;
kill sprintf.

branches: 1.31.6; 1.31.10;
Apply the following patch submitted by Evgeniy Ivanov:
http://mail-index.NetBSD.org/tech-kern/2011/12/15/msg012226.html
http://mail-index.NetBSD.org/tech-kern/2011/12/17/msg012229.html

- add 'ls' op to struct fs_ops to support ls command on each fs,
enabled by -DLIBSA_ENABLE_LS_OP and SAMISCMAKEFLAGS+="SA_ENABLE_LS_OP=yes"
in libsa
- split sys/lib/libsa/ufs_ls.c into UFS specific part and MI part (ls.c)
that opens the target fs and calls fs-depedent XXX_ls() functions
- add a ls op for ext2fs
(all other fs than ufs and ext2fs don't have actual ls ops yet)
- replace existing MD ufs_ls() calls with this new MI ls()

The original patch was written for i386 and ext2fs.
zaurus zboot has been tested by nonaka@.
ews4800mips and x68k loaders have been tested by me (with several fixes).
landisk might be okay since it was almost copied from i386.

XXX1: "ls" op in fs_ops looks a bit inconsistent, but we will be able to
replace it with real fs ops like readdir if it's really worth
XXX2: someone might have to check sys/arch/ia64/stand/efi/libefi/efifs_ls.c

branches: 1.30.8; 1.30.12;
MI libsa provides panic() and exit() functions, no need to provide our own.
As MI libsa exit() calls panic() with a "exit" message, don't use it if we
print our own farewell or have already panic()ed.

branches: 1.29.4;
Fix 'boot -z' bogons.

Ansify function definitions w/o arguments. Generated with sed.

ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.25.2;
add a boot.cfg option to clear the screen; default off. From Anon Ymous

branches: 1.24.2;
The structure of our elf kernel is:

elf header/program headers/text/data/note/
section headers/symbol table/string table

We need to read the section headers first to find the offset of the note
and thus we requite backwards seek. The only reason we need to read the
note is to find the version of the kernel, and this seems not to be used
anywhere. We could potentially change the kernel ldscript to add the note
information in the program headers, but dealing with ldscripts is painful
and producing a more complex binary could break some dumb standalone loader.
So the simple solution is to just disable the note loading for floppies
which is what this patch does. If someone wants to fix it in a better way,
be my guest.

Change the x86 boot blocks so they don't include builder login and date.

For now, we include kernel revision as a way of allowing users to
notice that boot blocks have gotten very old, so the first line of the
printout looks like this (depending on the particular block):

>> NetBSD/x86 BIOS Boot, Revision 3.4 (from NetBSD 5.0)

This may be changed a bit pending feedback. (Some people think that
the kernel revision shouldn't be there at all, for example.)

Part of the project to assure that bit-identical sources produce
bit-identical release binaries.

branches: 1.22.74; 1.22.78; 1.22.80; 1.22.82; 1.22.84;
merge ktrace-lwp.

De-__P().

Consistently pass 'int *' arguments to parsebootfile.

Fix build breakage. Oops.

Fix signed/unsigned warnings.

branches: 1.18.4; 1.18.24;
sort boot flag to alphabetical order. add -c.

g/c COMPAT_OLDBOOT from bootblocks, sprinkle some const
bump bootblock version to 2.10

branches: 1.16.4;
update usage message (new flags -v, -q)

g/c RB_DFLTROOT

I've tried hard to find also various usage() messages and remove the
appropriate flag from there as well, hopefully all occurences are covered.

branches: 1.14.6;
Do the same as biosboot does.
This makes it possible to create serial console dosboot.com's via uncommenting
the appropriate Makefile options.
I needed this when testing the SMP test kernels at work.

branches: 1.13.2;
remove bogus prototype for getopt

add prototypes, use ufs_ls() from mi libsa,
compile with -Wall -Wmissing-prototypes -Wstrict-prototypes -Wno-main

branches: 1.11.4;
Don't give exit() a parameter, as libstand version doesn't take one.

../lib/exec_fromdos.c doesn't use the memory size returned by XMS check
anymore if other methods work better. Sync banner output with this.

-Don't try to parse the bootfile path in DOS mode.
-Take "dev" command from "biosboot" for consistency.

branches: 1.8.2;
The additional linefeed appeared again... kill it.

Use common menu / parsing functions.
Adapt to new console / exec_netbsd arguments.

Use traditional memory detect function (int15/88) as indication for
a XMS driver.
From Martin Husemann.

branches: 1.5.2;
If we have xms print the xms memory size, and indicate that this is xms
memory in the banner. It is confusing to show 0 memory...

New welcome banner code, modeled after NetBSD/hp300's boot program
welcome banner code. Includes additional build information, and it
generally nicer to look at.

Remove strerror() prototype, it goes into stand.h.

Purely cosmetic whitespace/indentation changes (mmm, indent(1))

branches: 1.1.1;
Initial revision

dosboot(8): remove XMS-specific code. The boot process has been broken for over
a decade, and its relevance has diminished due to the availability of other boot
options.

PR port-i386/58624

branches: 1.1.2;
i386: stand: Migrate DOS support routines from `lib` to `dosboot`

x86/boot: fill in a bunch of missed changes and bump some versions.

missed features included:
- support for partition labels
- recursive labels inside RAID partitions
- booting a directory with kernel and modules
- multiBoot 2
- "root" command that changes default root
- "vesa" command to control graphical modes
- bi-endian support in disklabel, RAID and UFS
- fixes for buggy ACPI implementations
- fix PXE device path type
- fixes for buggy ACPI implementations
- serial console support with raw I/O accessors
- ASCII art

XXX: perhaps we could pullup some of these as minor version to release
branches but it seems extreme for a largely cosmetic issue. the
version across releases has a different build ID, so you can
already tell the difference between versions that changed.

dosboot(8): remove XMS-specific code. The boot process has been broken for over
a decade, and its relevance has diminished due to the availability of other boot
options.

PR port-i386/58624

branches: 1.11.118;
Update the version numbers following commit, and make them all identical.

branches: 1.10.104; 1.10.108; 1.10.110; 1.10.112; 1.10.114;
Change all .S files to use .code16 and .code32
Support 32bit addresses >64k as valid on bios calls.
Move stack for dosboot and biosboot to >64 so stack doesn't hit data.
Use disk sector number passed by mbr code to select default partition
(the mbr code doesn't do this yet).
NB only biosboot and dosboot have been tested so far.
(changes approved by christos and fvdl)

branches: 1.9.2;
Bump the version numbers of all bootloaders which use loadfile_elfXX() now
that it tries hard to avoid backwards seeks.

branches: 1.8.6;
Bump version numbers of all bootloaders that use loadfile/ELF, to account for
my changes to symbol loading. I should probably have done this at the time,
but it's better late than never.

branches: 1.7.4; 1.7.6;
add new macro BOOT_FLAG() (defined in <sys/boot_flag.h>) - this
maps standard boot flags to corresponding RB_* values
use BOOT_FLAG() in port's MD code as appropriate

as discussed on tech-kern, add new boot flags -v, -q for booting
verbosely or quietly, and corresponding AB_VERBOSE/AB_QUIET
boot flags; also add FreeBSD-compatible bootverbose macro and
NetBSD-specific bootquiet macro

for hpcmips, use new bootverbose instead of it's own hpcmips_verbose

Tested on i386, and to limited extend (compile of affected files) also for
mvme68k, hp300, luna68k, sun3.

switch to MI newvers_stand.sh version info generator

branches: 1.5.8;
Add exec.c here and bump version for elf.
XXX: This code has not been tested!

Update version number and mention int13 extension support
(sorry, forgot this on the recent commit of the above).

bump version number to reflect the partition ID change
(should have been done long ago)

Note use of common menu functions and new framework for argument passing
to the kernel.

branches: 1.1.2;
New welcome banner code, modeled after NetBSD/hp300's boot program
welcome banner code. Includes additional build information, and it
generally nicer to look at.

New welcome banner code, modeled after NetBSD/hp300's boot program
welcome banner code. Includes additional build information, and it
generally nicer to look at.

branches: 1.1.1;
Initial revision