Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Backout rev 183181. It appears that I should have been using boot-device
of "cd:,\\:tbxi" with properly configured boot.tbxi, instead of booting
\boot\loader directly. Rev 183168 could probably stay, since it can be
viewed as an anti-foot-shooting measure and has no impact on normal
operation. I can revert it as well, if anybody objects.

On PowerPC send output to both "/chosen/stdout" and "screen" nodes, unless
they point to the very same device. This should make loader usable on
some (all?) PowerMacs, where "/chosen/stdout" is disconneted from the
"screen" by the OF init process by default, except when user actually
has requested interaction with OF by holding ALT-CMD-O-F. Along with
rev 183168 this should provide a way to build bootable FreeBSD/ppc
installation or live CD that works OOB. Also, it should bring PowerMac
experience closer to that on other arches.

MFC after: 1 week
(assiming re@ blessing)

Make the openfirmware getchar entry point non-blocking. This catches up
with jhb's 2005/05/27 loader multiple-console change.

Tested by: marius/sparc64, grehan/ofwppc

- Make better use of the global chosen, memory and mmu handles instead
of obtaining them over and over again and pretending we could do
anything useful without them (for chosen this includes adding a
declaration and initializing it in OF_init()).
- In OF_init() if obtaining the memory or mmu handle fails just call
OF_exit() instead of panic() as the loader hasn't initialized the
console at these early stages yet and trying to print out something
causes a hang. With OF_exit() one at least has a change to get back
to the OFW boot monitor and debug the problem.
- Fix OF_call_method() on 64-bit machines (this is a merge of
sys/dev/ofw/openfirm.c rev 1.6).
- Replace OF_alloc_phys(), OF_claim_virt(), OF_map_phys() and
OF_release_phys() in the MI part of the loader with wrappers around
OF_call_method() in the sparc64. Beside the fact that they duplicate
OF_call_method() the formers should never have been in the MI part
of the loader as contrary to the OFW spec they use two-cell physical
addresses.
- Remove unused functions which are also MD dupes of OF_call_method().
- In sys/boot/sparc64/loader/main.c add __func__ to panic strings as
different functions use otherwise identical panic strings and make
some of the panic strings a tad more user-friendly instead of just
mentioning the name of the function that returned an unexpected
result.

Remove unused variables.

Start each of the license/copyright comments with /*-

Instead of "OpenFirmware", "openfirmware", etc. use the official spelling
"Open Firmware" from IEEE 1275 and OpenFirmware.org (no pun intended).

Ok'ed by: tmm

Convert to __FBSDID.

Fix test for != 0 that should be > 0.

The PowerPC conversion was

Submitted by: Benno Rice <benno@jeamland.net>

Convert from the Alpha compontents to PowerPC ones.

Repo copied from src/sys/boot/alpha/libalpha/prom.c,v

$Id$ -> $FreeBSD$

Bring the 'new-bus' to the i386. This extensively changes the way the
i386 platform boots, it is no longer ISA-centric, and is fully dynamic.
Most old drivers compile and run without modification via 'compatability
shims' to enable a smoother transition. eisa, isapnp and pccard* are
not yet using the new resource manager. Once fully converted, all drivers
will be loadable, including PCI and ISA.

(Some other changes appear to have snuck in, including a port of Soren's
ATA driver to the Alpha. Soren, back this out if you need to.)

This is a checkpoint of work-in-progress, but is quite functional.

The bulk of the work was done over the last few years by Doug Rabson and
Garrett Wollman.

Approved by: core

This is the new unified bootstrap, sometimes known previously as the
'three-stage' bootstrap.
There are a number of caveats with the code in its current state:
- The i386 bootstrap only supports booting from a floppy.
- The kernel and kld do not yet know how to deal with the extended
information and module summary passed in.
- PnP-based autodetection and demand loading of modules is not implemented.
- i386 ELF kernel loading is not ready yet.
- The i386 bootstrap is loaded via an ugly blockmap.

On the alpha, both net- and disk-booting (SRM console machines only) is
supported. No blockmaps are used by this code.

Obtained from: Parts from the NetBSD/i386 standalone bootstrap.