centralize vers.c building for standalone programs.

branches: 1.31.4; 1.31.8; 1.31.12;
Put GCC/GAS specific options under ACTIVE_CC == "gcc".

Don't set -mmultiple or -mno-string for PowerPC, the difference is too
small to really matter and it sometimes even increases the size.

branches: 1.29.2;
Add empty LIBCRTI= as LIBCRT0 to build sa programs without installed DESTDIR.

XXX: probabry we should have bsd.saprog.mk or something.

Use <bsd.klinks.mk>
Add ${_MKTARGET_LINK}

branches: 1.27.4; 1.27.14; 1.27.18;
Ensure that NOMAN is defined earlier.

Drop bootprog_maker (formerly enabled by -M) and bootprog_date (formerly
disabled by -D) from the output of newvers_stand.sh. Change -D to the
inverted logic, so that it adds the date to bootprog_rev in ().

Change all platforms accordingly. -D is added if MKREPRO is not yes and
wasn't present before. Platforms that didn't use -D don't depend on
MKREPRO now either.

branches: 1.25.4; 1.25.6; 1.25.8;
Added support for RDB partitions.
Moved MBR parition code out of ofdev.c into mbr.c.
Tested on Pegasos2 (RDB and MBR) and RS6000.

WARNSfy

branches: 1.23.6; 1.23.10; 1.23.18;
Add support to ofwboot for booting on the 7046-B50. Also likely to work
on the 7043-150. The B50 wants not only a note at the head of the
binary, like the 7044 did, but it also wants a PHDR that points at it.
Because the IBM firmware doesn't like the real note section that ld
generates (it puts it at the end of the file), we instead point PT_NOTE
at the text section. This works, because at the top of the text section,
there is a note hacked in, which was required for the 7044.

Also, change the mode from virtual mode to real mode in the note, because
the B50 hangs if you load it in virtual. Tested to work on a B50, 7044,
and Pegasos2.

Yay IBM.

Add a very quick and simple hack to allow ofwboot to be compiled into a
program that dumps the entire ofw device tree automatically. I needed
this functionality to collect ofw dumps from users, and it doesn't hurt
to just commit it, as it's all protected inside a #ifdef OFWDUMP.

Changes to the ofppc ofwboot to make it boot on an IBM CHRP RS/6000.
Tested on a pegasos II and a 7044-270. Also, switch away from the hacked
up alloc.c we were using, and use the stock libsa one.

branches: 1.20.2; 1.20.8;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.19.10;
Add src/common/include to -I include path so that ofwboot build
without installed headers in DESTDIR.

branches: 1.18.30; 1.18.32; 1.18.38;
merge ktrace-lwp.

branches: 1.17.16;
Use ${HOST_SH} instead of `sh'.

If necessary, pull in <bsd.sys.mk> to get the definition of HOST_SH;
Makefiles that pull in one of (most of) <bsd.*.mk> will get this anyway.

Make this work with R/O source trees.

Use -ffreestanding.
Define LIB{CRT0,C,CRTBEGIN,CRTEND} as nothing, we don't need to link
against them.

branches: 1.14.6;
tidy a bit.

build ofwboot as an ELF binary.

avoid hardcoding MBR_MAGICOFF and MBR_MAGIC.

branches: 1.11.8;
MKfoo=no -> NOfoo

branches: 1.10.4;
Clean up the NetBSD/ofppc boot loader:
- Garbage collect some cruft that doesn't apply to the ofppc port.
- Make our OFW-friendly alloc.c more like the libsa alloc.c
- Generally reduce some differences where we can between this
boot loader and the NetBSD/macppc boot loader.
- Use libsa's loadfile().
- Fix DDB symbol loading -- Add a magic number after the args string
so the kernel knows the symbols are there, provide both ssym and
esym, and make sure all these values are aligned to a 4-byte boundary.
- Add support for MS-DOS file systems.

branches: 1.9.4;
convert to use conf/newvers_stand.sh, minor Makefile adjustments

Clean up the machine symlink stuff ever so slightly. Needs to be
standardized between files.

branches: 1.7.2;
Make symlink for powerpc@.

branches: 1.6.8;
convert from NOxxx= to MKxxx=no.
include <bsd.own.mk> if testing a MKxxx variable.

Use PowerPC-generic stuff and eliminate the powermac portion.

Rename NetBSD/powerpc to NetBSD/ofppc.
New sys/arch/powerpc with PowerPC-generic stuff.

enable compatibility for old partition ID per default

STRIP -> STRIPFLAG

New OpenFirmware boot code for NetBSD/powerpc, based on Wolfgang's original
NetBSD/powerpc boot program. Highligts:
- Rearrange a bit so that we can sanely add boot programs for
non-OpenFirmware systems.
- Add support for loading compressed kernels (for booting from
1.44M floppies).
- Add support for loading Elf kernels (Elf is the new standard format
for NetBSD/powerpc). (XXX Don't load symbols right now - the code
to do it is there, but I don't particularly like how space for the
symbol table is allocated; I will revisit this soon'ish).