Replace boot_ustar with xxboot_ustarfs.
The old boot_ustar had many hard coding and was small(<1KB).
The new xxboot_ustarfs is a part of integrated larger(<8KB) xxboot.
We had to maintain three similar but not the same bootloaders, but
now we have two!

Style fixes. One entry per line for some parts.

branches: 1.15.4;
Initial support for xxboot (cdboot_cd9660, specifically).

branches: 1.14.100;
Remove obsolete xxboot.

New toolchain.
XXX: New toolchain generates 100byte bigger object than the 8KB limit.
XXX: Therefore, compilation always fails!

MKfoo=no -> NOfoo

.include <bsd.own.mk> for OBJECT_FMT.

branches: 1.10.4;
Make this compile with the new toolchain.

objcopy -> ${OBJCOPY}; remove redundant definitions of OBJCOPY?= (it is
now in bsd.own.mk).

branches: 1.8.2; 1.8.4;
Another steps for ELF.
- register prefix
- machine/asm.h
- deprecated -T option for ld(1)

branches: 1.7.6;
Revert STRIPPROG -> STRIP

STRIP -> STRIPPROG

branches: 1.5.8;
Fixed the bug described in the previous commit log.
Re-enabled the title image.

Work around for broken unzip routine.
Transition to egcs seems to have broken the trickily hacked inflate routine.
Disable the hack and size-consuming title image for a while.

Merged minoura_x68k_bus_h branch.

convert from NOxxx= to MKxxx=no.
include <bsd.own.mk> if testing a MKxxx variable.

branches: 1.1.6;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

TAB/space/indent cleanup.

libsa now needs ioctl to support media with large sectors. Provide
missing functions.

libsa defines files[] array itself, just reference it.
This also adds another global variable that tracks the root
filesystem module.

Add missing -m68020-60 option. This makes xxboot_ustarfs work even on 68060.
Problem reported by Makoto Kamada. Confirmed on XEiJ (68060 mode).

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Reduce binary size as possible. These reduce filesize about 20 words.
- Use word alignment (rather than longword alignment) for text/data section.
- Use short reference. In the bootloader, all symbols can be expressed in
short.

Use fixed 'xx' instead of DEV and DEVDRV for simplicity.
There is no choice other than xx for now.

Style fixes. One entry per line for some parts.

- Restore display of first_kbyte. This is helpful for development.
- Check the filesize of resulting file instead of section sizes.
If there is a gap between sections, the filesize may be exceeded even
though the section total is not exceeded. Of course that doesn't
usually happen but I've experienced this during development.

Make x68k/stand compile with GCC8. Tested with XEiJ.

Set heap area explicitly.
Until the load address was moved, the heap was placed at _end (it's default)
and it was large space. After moving, this default space was too small.

Check whether the text+data+bss doesn't reach 0x6000 where secondary
bootloader should be.

Use ASSERT() in ldscript to check first_kbyte (etc) restrictions,
rather than complicated shell expressions in Makefile.

Change primary bootloader's load address from 0x0f0000 to 0x003000.
- Moving addresses closer eliminates bunch of this linker errors:
in function `entry0':
relocation truncated to fit: R_68K_16 against `edata'+ffffffffffff8000
:
- By this change, harmful -noinhibit-exec option can also be removed.
Finally, we can break the builds when assemble error occurs!
- Load address of secondary is 0x6000, so that this change limits
text+data+bss 12KB or less. Current actual size is 5~7KB.
I think it should be fine.
- cd9660 can have up to 30KB text+data in its bootarea. Even in this
case, this change limits text+data+bss 12KB or less (currently, it's
about 6KB). However, I take breaking the builds on errors rather than
future size limitation.
There is no user visible changes or interface changes.

Add 0x prefix when defining variables, not when using it.
This was necessary for bc(1) but it's no longer necessary.

Pass address constants from Makefile to ldscript.

Rewrite limit check using cross-build tools.
This eliminates use of hosts tr(1) and bc(1).
(But I'm going to remove this again soon due to other reason)

Remove .else part of .if OBJECT_FMT == ELF.
All similar parts in other Makefiles are removed in 2010.

branches: 1.4.14; 1.4.20;
centralize vers.c building for standalone programs.

branches: 1.3.4; 1.3.8; 1.3.12;
Remove OBJCOPY?=objcopy.
Falling back to the hosttool is not a good way now.

branches: 1.2.2;
Build boot loaders without unwind tables.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8;
Initial support for xxboot (cdboot_cd9660, specifically).

Remove obsolete xxboot.

branches: 1.1.28; 1.1.32;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

Remove obsolete xxboot.

branches: 1.1.28; 1.1.32;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

Remove obsolete xxboot.

branches: 1.1.28; 1.1.32;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

Minor improvement.
add/addx is faster and the size remains the same.

typo in comment.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Set heap area explicitly.
Until the load address was moved, the heap was placed at _end (it's default)
and it was large space. After moving, this default space was too small.

Revert placing .bss right after .data, and make .bss fixed at 0x5000.
.bss placed right after .data was overwritten when first 1KB loads full
.text+.data.

Use __bss_start rather than edata to point the beginning of .bss.
Currently the .bss is placed right after .data. In that case, edata
points to the beginning of .bss so that there is no visible changes at
least currently.

Change primary bootloader's load address from 0x0f0000 to 0x003000.
- Moving addresses closer eliminates bunch of this linker errors:
in function `entry0':
relocation truncated to fit: R_68K_16 against `edata'+ffffffffffff8000
:
- By this change, harmful -noinhibit-exec option can also be removed.
Finally, we can break the builds when assemble error occurs!
- Load address of secondary is 0x6000, so that this change limits
text+data+bss 12KB or less. Current actual size is 5~7KB.
I think it should be fine.
- cd9660 can have up to 30KB text+data in its bootarea. Even in this
case, this change limits text+data+bss 12KB or less (currently, it's
about 6KB). However, I take breaking the builds on errors rather than
future size limitation.
There is no user visible changes or interface changes.

Typo in comment. s/availble/available/

Add comment and figure of address map.

Initialize the screen in all primary bootloaders.
- Some IPL (or boot selector) don't do it, but current secondary bootloader
expects the screen to be initialized to display logo.
To keep messages (like version signature) displayed by primary bootloader,
this initialization should be done early in all primary bootloaders.
- For boot_ustar.S, relocates some registers to save bootinfo (%d0).
- Bumps version.

Confirmed on X68030+060turbo and my X68030. This problem was found on
X68030+060turbo at NetBSD booth in OSC 2011 Hiroshima (8+ years ago).

Use .org directive to fix disklabel location instead of hand calculation.
If the code size before disklabel is less, zero is filled automatically.
If the code size before disklabel is exceeded, assembler stops with error.
Note that this changes a padding word in the current output binary from
a NOP instruction to zero but there are no functional changes.

Typo in comment. s/LABELLOFFSET/LABELOFFSET/

branches: 1.3.2; 1.3.40; 1.3.46;
Use a correct function name in .globl decl.

Pull fixes in comments from x68k/stand/boot_ufs/boot.S rev 1.9 and 1.10.

branches: 1.1.2; 1.1.4;
Initial support for xxboot (cdboot_cd9660, specifically).

TAB/space/indent cleanup.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Use DEV_OPEN() macro.

Add xxboot.h common header to share prototype definitions.

Make compilable even with XXBOOT_DEBUG.

branches: 1.4.2;
Make xxboot for ufs variants actually functional:
- set bootdev properly even on SCSI HD and floppy boot
per SDBOOT/FDBOOT/CDBOOT defines in each Makefile
- always print xxboot name and version
- use IOCS PRINT calls instead of printf to avoid size overflow in DEBUG case
- wrap debug stuff with #ifdef XXBOOT_DEBUG
- bump version to denote changes
Mostly taken from old boot_ufs.

XXX: xxboot_lfs[12] are untested.

Set *file for FS_OPS() pathname properly in devopen().
Now bootxx_ffsv1 (and other bootxx ufs variants) work properly.

XXX: cd9660_open() in sys/lib/libsa/cd9660.c seems to open a file in
the first entry of root directory if specified path is empty.
Not sure if it's intentional behavoir.

- fix comments
- use proper uintNN_t types
- use ANSI function decls
- remove unnecessary function decl
- remove __P()
- misc KNF and cosmetics

branches: 1.1.2; 1.1.4;
Initial support for xxboot (cdboot_cd9660, specifically).

Remove obsolete xxboot.

Copy alloca() and memcpy() definitions from libkern.h.

branches: 1.2.2; 1.2.8;
Another steps for ELF.
- register prefix
- machine/asm.h
- deprecated -T option for ld(1)

branches: 1.1.26;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

Remove obsolete xxboot.

branches: 1.2.2; 1.2.8;
Another steps for ELF.
- register prefix
- machine/asm.h
- deprecated -T option for ld(1)

branches: 1.1.26;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

branches: 1.1.2; 1.1.6;
Initial support for xxboot (cdboot_cd9660, specifically).

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

branches: 1.1.2; 1.1.6;
Initial support for xxboot (cdboot_cd9660, specifically).

Remove obsolete xxboot.

branches: 1.1.28; 1.1.32;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

Remove obsolete xxboot.

branches: 1.1.28; 1.1.32;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

Remove obsolete xxboot.

branches: 1.2.2; 1.2.8;
Another steps for ELF.
- register prefix
- machine/asm.h
- deprecated -T option for ld(1)

branches: 1.1.26;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

TAB/space/indent cleanup.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Initialize the screen in all primary bootloaders.
- Some IPL (or boot selector) don't do it, but current secondary bootloader
expects the screen to be initialized to display logo.
To keep messages (like version signature) displayed by primary bootloader,
this initialization should be done early in all primary bootloaders.
- For boot_ustar.S, relocates some registers to save bootinfo (%d0).
- Bumps version.

Confirmed on X68030+060turbo and my X68030. This problem was found on
X68030+060turbo at NetBSD booth in OSC 2011 Hiroshima (8+ years ago).

branches: 1.2.2; 1.2.40; 1.2.46;
Make xxboot for ufs variants actually functional:
- set bootdev properly even on SCSI HD and floppy boot
per SDBOOT/FDBOOT/CDBOOT defines in each Makefile
- always print xxboot name and version
- use IOCS PRINT calls instead of printf to avoid size overflow in DEBUG case
- wrap debug stuff with #ifdef XXBOOT_DEBUG
- bump version to denote changes
Mostly taken from old boot_ufs.

XXX: xxboot_lfs[12] are untested.

branches: 1.1.2; 1.1.4;
Initial support for xxboot (cdboot_cd9660, specifically).

libsa now needs ioctl to support media with large sectors. Provide
missing functions.

libsa defines files[] array itself, just reference it.
This also adds another global variable that tracks the root
filesystem module.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Add xxboot.h common header to share prototype definitions.

branches: 1.2.2;
- use declarations in <lib/libsa/stand.h>
- remove __P() and some KNF
- remove extern variable decl
- use uintNN_t type

branches: 1.1.2; 1.1.4;
Initial support for xxboot (cdboot_cd9660, specifically).

Remove obsolete xxboot.

branches: 1.2.2; 1.2.8;
Another steps for ELF.
- register prefix
- machine/asm.h
- deprecated -T option for ld(1)

branches: 1.1.26;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Add xxboot.h common header to share prototype definitions.

Remove obsolete xxboot.

branches: 1.1.28; 1.1.32;
NetBSD/x68k boot loader. The xxboot now can boot NetBSD from
1. >1GB SCSI disks,
2. any of the top 7 partitions on disks, and
3. any SCSI interface.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Reduce binary size as possible. These reduce filesize about 20 words.
- Use word alignment (rather than longword alignment) for text/data section.
- Use short reference. In the bootloader, all symbols can be expressed in
short.

- Restore display of first_kbyte. This is helpful for development.
- Check the filesize of resulting file instead of section sizes.
If there is a gap between sections, the filesize may be exceeded even
though the section total is not exceeded. Of course that doesn't
usually happen but I've experienced this during development.

Revert placing .bss right after .data, and make .bss fixed at 0x5000.
.bss placed right after .data was overwritten when first 1KB loads full
.text+.data.

Check whether the text+data+bss doesn't reach 0x6000 where secondary
bootloader should be.

Make .bss follows .data to detect size restriction easier.
Previously, if text+data exceeds the restricted size, it will conflict
with manually fixed .bss area and ldscript makes it an error.
By this change, ASSERT() can detect it.

Use ASSERT() in ldscript to check first_kbyte (etc) restrictions,
rather than complicated shell expressions in Makefile.

Remove commented out ALIGN() operation.
It looks unnecessary and has never been used.

Pass address constants from Makefile to ldscript.

branches: 1.1.2; 1.1.6; 1.1.44; 1.1.50;
Initial support for xxboot (cdboot_cd9660, specifically).

Use fixed 'xx' instead of DEV and DEVDRV for simplicity.
There is no choice other than xx for now.

branches: 1.2.2;
Make xxboot for ufs variants actually functional:
- set bootdev properly even on SCSI HD and floppy boot
per SDBOOT/FDBOOT/CDBOOT defines in each Makefile
- always print xxboot name and version
- use IOCS PRINT calls instead of printf to avoid size overflow in DEBUG case
- wrap debug stuff with #ifdef XXBOOT_DEBUG
- bump version to denote changes
Mostly taken from old boot_ufs.

XXX: xxboot_lfs[12] are untested.

branches: 1.1.2; 1.1.4;
Initial support for xxboot (cdboot_cd9660, specifically).

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Use fixed 'xx' instead of DEV and DEVDRV for simplicity.
There is no choice other than xx for now.

branches: 1.4.2;
Make xxboot for ufs variants actually functional:
- set bootdev properly even on SCSI HD and floppy boot
per SDBOOT/FDBOOT/CDBOOT defines in each Makefile
- always print xxboot name and version
- use IOCS PRINT calls instead of printf to avoid size overflow in DEBUG case
- wrap debug stuff with #ifdef XXBOOT_DEBUG
- bump version to denote changes
Mostly taken from old boot_ufs.

XXX: xxboot_lfs[12] are untested.

Fix previous; no need to echo dummy command.

Appease warning "nbmake: ${TOUCHPROG} expands to empty string".

branches: 1.1.2; 1.1.4;
Initial support for xxboot (cdboot_cd9660, specifically).

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Use fixed 'xx' instead of DEV and DEVDRV for simplicity.
There is no choice other than xx for now.

branches: 1.4.2;
Make xxboot for ufs variants actually functional:
- set bootdev properly even on SCSI HD and floppy boot
per SDBOOT/FDBOOT/CDBOOT defines in each Makefile
- always print xxboot name and version
- use IOCS PRINT calls instead of printf to avoid size overflow in DEBUG case
- wrap debug stuff with #ifdef XXBOOT_DEBUG
- bump version to denote changes
Mostly taken from old boot_ufs.

XXX: xxboot_lfs[12] are untested.

Fix previous; no need to echo dummy command.

Appease warning "nbmake: ${TOUCHPROG} expands to empty string".

branches: 1.1.2; 1.1.4;
Initial support for xxboot (cdboot_cd9660, specifically).

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Use fixed 'xx' instead of DEV and DEVDRV for simplicity.
There is no choice other than xx for now.

branches: 1.4.2;
Make xxboot for ufs variants actually functional:
- set bootdev properly even on SCSI HD and floppy boot
per SDBOOT/FDBOOT/CDBOOT defines in each Makefile
- always print xxboot name and version
- use IOCS PRINT calls instead of printf to avoid size overflow in DEBUG case
- wrap debug stuff with #ifdef XXBOOT_DEBUG
- bump version to denote changes
Mostly taken from old boot_ufs.

XXX: xxboot_lfs[12] are untested.

Fix previous; no need to echo dummy command.

Appease warning "nbmake: ${TOUCHPROG} expands to empty string".

branches: 1.1.2; 1.1.4;
Initial support for xxboot (cdboot_cd9660, specifically).

Overhaul xxboot. And merge floppy boot, taken from boot_ustar.
- Rewrite boot.S completely.
boot.S now supports boot from SCSI HD/CD and floppy.
- Use IOCS call to identify the floppy format, instead of chkfmt.s which
accesses hardware directly.
- Import print_hex() debug function from boot_ufs.
- Import a feature that displays initial registers (for debug) from boot_ufs,
and restore it (this in boot_ufs has been broken).
- Add size optimized alternatives for some libkern routines.
- Stop linking libsa to prevent to link unexpected objects.
- Bump version to 2.0.

Use fixed 'xx' instead of DEV and DEVDRV for simplicity.
There is no choice other than xx for now.

branches: 1.4.2;
Make xxboot for ufs variants actually functional:
- set bootdev properly even on SCSI HD and floppy boot
per SDBOOT/FDBOOT/CDBOOT defines in each Makefile
- always print xxboot name and version
- use IOCS PRINT calls instead of printf to avoid size overflow in DEBUG case
- wrap debug stuff with #ifdef XXBOOT_DEBUG
- bump version to denote changes
Mostly taken from old boot_ufs.

XXX: xxboot_lfs[12] are untested.

Fix previous; no need to echo dummy command.

Appease warning "nbmake: ${TOUCHPROG} expands to empty string".

branches: 1.1.2; 1.1.4;
Initial support for xxboot (cdboot_cd9660, specifically).