Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

MFC: r256932, r256938, r256953

r256932:
Add a new function (OF_getencprop()) that undoes the transformation applied
by encode-int. Specifically, it takes a set of 32-bit cell values and
changes them to host byte order. Most non-string instances of OF_getprop()
should be using this function, which is a no-op on big-endian platforms.

r256938:
A few other common cases for encode-int decoding: OF_getencprop_alloc()
and OF_searchencprop(). I thought about using the element size parameter
to OF_getprop_alloc() to do endian-switching automatically, but it breaks
use with structs and a *lot* of FDT code (which can hopefully be moved to
these new APIs).

r256953:
Fix build.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Add a kernel interface (OF_xref_phandle()) for systems where phandles
used as cross-references in the device tree and phandles as used by the
Open Firmware client interface are in different namespaces. This include
IBM pSeries hardware as well as FDT systems. FDT certainly abuses
ihandles for this purpose and should be modified to use this API
eventually. This changes no behavior on systems where FreeBSD already
worked.

Reviewed by: marius
Approved by: re (kib)
MFC after: 2 weeks

- Add OF_hasprop() and ofw_bus_has_prop(). These can be used to check
existence of the property.

- Fix ofw_bus_is_compatible{,_strict}() to prevent substring match in the
compatible string.

Reviewed by: raj

Missed a file in r209803: this header contains a definition of
OFW_STD_32BIT.

Pointy hat to: me

Prepare and extend OFW layer for FDT support.

o Let OFW_INIT() and OF_init() return status value.

o Provide helper routines for 'compatible' property handling.

o Only compile OF and OFW code, which is relevant in FDT scenario.

o Other minor cosmetics

Reviewed by: imp
Sponsored by: The FreeBSD Foundation

Pull OF_quiesce() out of the MI Open Firmware layer and entirely into
PPC ofw_machdep.c, in recognition of its state as a machine specific hack.

Requested by: marius

On PowerMac11,2 and (presumably) PowerMac12,1, we need to quiesce the
firmware in order to take over control of the SMU. Without doing this,
the firmware background process doing fan control will run amok as we
take over the system and crash the management chip.

This is limited to these two machines because our kernel is heavily
dependent on firmware accesses, and so quiescing firmware can cause
nasty problems.

Fix style.

Fix the OFW interrupt map parser to use its own idea of the number of interrupt
cells in the map, instead of using a value passed to it and then panicing if it
disagrees. This fixes interrupt map parsing for PCI bridges on some Apple
Uninorth PCI controllers.

Reported by: marcel
Tested on: G4 iBook, Sun Ultra 5

Modularize the Open Firmware client interface to allow run-time switching
of OFW access semantics, in order to allow future support for real-mode
OF access and flattened device frees. OF client interface modules are
implemented using KOBJ, in a similar way to the PPC PMAP modules.

Because we need Open Firmware to be available before mutexes can be used on
sparc64, changes are also included to allow KOBJ to be used very early in
the boot process by only using the mutex once we know it has been initialized.

Reviewed by: marius, grehan

Unbreak ofwdump build by moving the pcell_t definition to after the kernel
types headers, and inside the _KERNEL ifdef.

Pointy hat to: me

Adapt parts of the sparc64 Open Firmware bus enumeration code (in particular,
the code for parsing interrupt maps) to PowerPC and reflect their new MI
status by moving them to the shared dev/ofw directory.

This commit also modifies the OFW PCI enumeration procedure on PowerPC to
allow the bus to find non-firmware-enumerated devices that Apple likes to add,
and adds some useful Open Firmware properties (compat and name) to the pnpinfo
string of children on OFW SBus, EBus, PCI, and MacIO links. Because of the
change to PCI enumeration on PowerPC, X has started working again on PPC
machines with Grackle hostbridges.

Reviewed by: marius
Obtained from: sparc64

- Restore the machine independency of sys/dev/ofw/openfirm.{c,h} by
moving OF_set_mmfsa_traptable() (SUNW,set-trap-table with the two
arguments used here is specific to sun4v) to MD code.
- In sys/dev/ofw/openfirm.h remove prototypes for unimplemented
functions and unused Solaris compatibility macros.

kernel clean up to make the sun4v kernel build

Reviewed by: jmg
Approved by: rwatson (mentor)

Start each of the license/copyright comments with /*-, minor shuffle of lines

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

Ok'ed by: tmm

Implement OF_interpret.

Obtained from: netbsd

Add an #ifdef _KERNEL to make it possible to include this file from
userland (to get the typedefs).

1. Add ofw_pci.h with definitions for the OpenFirmware PCI bindings
2. Add OF_getprop_alloc(), a helper function that will malloc() a sufficient
amount of memory and then retrieve a property value into it.

Approved by: benno
Obtained from: NetBSD (1)

Make the openfirmware functions work on 64 bit architectures by using
a standard cell_t type for the fields of all argument structs. Also
make ihandle_t and phandle_t unsigned to avoid sign extension problems.

Approved by: benno

Bracket this file in the usual #ifndef/#define/#endif stuff to prevent
multiple inclusion.

OpenFirmware kernel support, as used by the PowerPC and hopefully other
ports later on.

This includes the basic MI interface routines as well as a console driver.
The MD code is kept in the MD directories.

Reviewed by: obrien

These were repo copied from their sys/boot/ofw/libofw counter parts.

OpenFirmware/PowerPC loader, part 2.

As of this patchset, the loader builds (under NetBSD/macppc), boots, interacts
and talks to BOOTP/NFS servers.

(main.c was moved from boot/ofw/libofw to boot/ofw/common but has no revision
history)

Reviewed by: obrien

"Ok, my loader's now up to putting up a prompt. It probes disks partially
but can't boot from them yet."

Thanks to Stephane Potvin for the some of the code in this set.

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