Commit Graph

121 Commits

Author SHA1 Message Date
Ruslan Bukin
a8c5ea04b4 Provide the number of interrupt resources added to the list
by using extra argument, so caller will know that.
2015-05-15 13:55:18 +00:00
Justin Hibbits
6f489d43c8 Missed ofw_machdep.c in r282264. 2015-04-30 03:15:07 +00:00
Nathan Whitehorn
5c845fde2e Make 32-bit PowerPC kernels, like 64-bit PowerPC kernels, position-independent
executables. The goal here, not yet accomplished, is to let the e500 kernel
run under QEMU by setting KERNBASE to something that fits in low memory and
then having the kernel relocate itself at runtime.
2015-03-07 20:14:46 +00:00
Rui Paulo
29d0137a8d Remove FreeBSD/wii.
This port failed to gain traction and probably only a couple Wii consoles
ran FreeBSD all the way to single user mode with an md(4). IPC
support was never implemented, so it was impossible to use any peripheral

Any further development, if any, will happen at https://github.com/rpaulo/wii.

Discussed with:	nathanw (a long time ago), jhibbits
2015-02-10 06:35:16 +00:00
Nathan Whitehorn
922a3152f6 Correctness improvements for removing FDT excluded memory areas. 2015-01-31 18:39:32 +00:00
Nathan Whitehorn
f70dd52fe6 Allow use of a pre-instantiated RTAS as well as a self-instantiated one. This
lets the kernel boot on RTAS-based systems by being kexec'ed from Linux.
2015-01-22 22:04:43 +00:00
Nathan Whitehorn
b9d056f3d6 Remove space in the FDT reservation map from the available memory regions
in ofw_mem_regions(). This function is actually MI and should move to
dev/ofw at some point in the near future so that ARM and MIPS can use the
same code.
2015-01-20 05:44:21 +00:00
Nathan Whitehorn
9cecb88ce3 Use TOC to look up all kernel globals on powerpc64 instead of doing the
non-relocatable lis @ha, ori @l dance and hoping they are below 4 GB.

MFC after:	2 months
2015-01-18 20:00:33 +00:00
Nathan Whitehorn
bb80825435 Refactor PowerPC (especially AIM) init sequence to be less baroque.
MFC after:	2 months
2015-01-18 18:32:43 +00:00
Nathan Whitehorn
6e127b87c4 Remove last vestige of Apple-specific memory parsing removed in r258807. 2015-01-02 22:34:03 +00:00
Nathan Whitehorn
44d29d4762 Allow booting with both a real Open Firmware tree and a flattened version of
the Open Firmware, as provided by petitboot, for example. Note that this is
not quite complete, since RTAS instantiation still depends on callable
firmware.

MFC after:	2 weeks
2015-01-01 22:26:12 +00:00
Rui Paulo
5cead939e9 Move ofw_cpu.c to sys/dev/ofw so that it can be used by other
architectures.

Differential Revision:	https://reviews.freebsd.org/D1307
Reviewed by:	jhibbits
2014-12-14 22:41:08 +00:00
Ian Lepore
d7771b5006 Fix a paste-o commited in r272109: we need to get the interrupts for the
child node, not the parent node.

Pointed out by:	jhibbits@
2014-09-26 15:16:53 +00:00
Ian Lepore
c47d4cde39 Replace multiple nearly-identical copies of code to walk through an FDT
node's interrupts=<...> property creating resource list entries with a
single common implementation.  This change makes ofw_bus_intr_to_rl() the
one true copy of that code and removes the copies of it from other places.

This also adds handling of the interrupts-extended property, which allows
specifying multiple interrupts for a node where each interrupt can have a
separate interrupt-parent.  The bindings for this state that the property
cells contain an xref phandle to the interrupt parent followed by whatever
interrupt info that parent normally expects.  This leads to having a
variable number of icells per interrupt in the property.  For example you
could have <&intc1 1 &intc2 26 9 0 &intc3 9 4>.

Differential Revision: https://reviews.freebsd.org/D803
2014-09-25 15:02:33 +00:00
Ian Lepore
752ba93078 Rename OF_xref_phandle() to OF_node_from_xref() and add a new function
that provides the inverse translation, OF_xref_from_node().

Discussed with:	nwhitehorn
2014-09-01 18:51:01 +00:00
Christian Brueffer
d01195e3a9 Correct the order of arguments to mtx_init().
PR:		186701
Submitted by:	Takanori Sawada <tak.swd at gmail.com>
MFC after:	2 weeks
2014-02-14 11:18:15 +00:00
Nathan Whitehorn
65d08437ef Move Open Firmware device root on PowerPC, ARM, and MIPS systems to
a sub-node of nexus (ofwbus) rather than direct attach under nexus. This
fixes FDT on x86 and will make coexistence with ACPI on ARM systems easier.
SPARC is unchanged.

Reviewed by:	imp, ian
2014-02-05 14:44:22 +00:00
Nathan Whitehorn
bbc6da03ef Open Firmware interrupt specifiers can consist of arbitrary-length byte
strings and include arbitrary information (IRQ line/domain/sense). When the
ofw_bus_map_intr() API was introduced, it assumed that, as on most systems,
these were either 1 cell, containing an interrupt line, or 2, containing
a line number plus a sense code. It turns out a non-negligible number of
ARM systems use 3 (or even 4!) cells for interrupts, so make this more
general.
2014-02-01 17:17:35 +00:00
Justin Hibbits
9a2edf0198 Add suspend/resume state saving for OpenPIC on PowerMac. It's likely this
can be used on the others (cpcht and psim), but that has not been tested.
2013-12-21 04:31:54 +00:00
Nathan Whitehorn
95e3bfe889 Simplify the ofw_bus_lookup_imap() API slightly: make it allocate maskbuf
internally instead of requiring the caller to allocate it.
2013-12-17 15:11:24 +00:00
Nathan Whitehorn
cb6d9d6cb1 Configure interrupt sense based on device tree information. This extends
the OF interrupt map API to return sense information to the caller and
the PowerPC Open Firmware PCI base driver to use it to program the PIC.
2013-12-17 14:50:35 +00:00
Nathan Whitehorn
4aa3cee65a Revert last few revisions; apologies for the noise. There are very rare,
broken systems that require SPRG state to be preserved.
2013-12-01 19:59:36 +00:00
Nathan Whitehorn
c7291bdcd0 Deleted one line too many. 2013-12-01 19:56:30 +00:00
Nathan Whitehorn
ff4ae2ead1 No actual hardware supported by FreeBSD requires this SPRG save/restore
paranoia, so kill it. In particular, changes to SPRG0 are dangerous, since
that is where the PCPU pointer is kept.
2013-12-01 19:45:04 +00:00
Nathan Whitehorn
c1cb22d755 Rearchitect platform memory map parsing to make it less
Open Firmware-centric:
- Keep the static list of regions in platform.c instead of ofw_machdep.c
- Move various merging and sorting operations to platform.c as well
- Move apple_hacks code out of ofw_machdep.c and into platform_powermac.c,
  where it belongs
- Move CHRP-specific dynamic-reconfiguration memory parsing into
  platform_chrp.c instead of pretending it is shared code
2013-12-01 19:43:15 +00:00
Andreas Tobler
86b2b302f9 Add a printf to inform about the logical memory block size which is in use
by the system. This might give a hint why a pSeries system is not booting.
2013-11-30 21:54:55 +00:00
Nathan Whitehorn
1679c30254 Make RTAS calls, which call setfault() to recover from machine checks,
preserve any existing fault buffer. RTAS calls are meant to be safe from
interrupt context (and are indeed used there to implement the xics PIC
drvier). Without this, calling into RTAS in interrupt context would have
the effect of clearing any existing onfault state of the interrupted
thread, potentially leading to a panic.
2013-11-27 21:51:34 +00:00
Andreas Tobler
f367ffdecc Save and restore the trap vectors when doing OF calls on pSeries machines.
It turned out that on pSeries machines the call into OF modified the trap
vectors and this made further behaviour unpredictable.

With this commit I'm now able to boot multi user on a network booted
environment on my IntelliStation 285. This is a POWER5+ machine.

Discussed with:		nwhitehorn
MFC after:	1 week
2013-11-23 18:58:17 +00:00
Justin Hibbits
776fd11e30 Add a sysctl to allow disabling resetting the OF syscons.
On some machines (G5 with lots of RAM), entering OF sometimes causes the
machine to hang.  Once the machine is booted, currently the only entry point
into OF is through resetting the framebuffer on mode switch on these machines.
Disabling this allows the machine to stay up at the expense of less usable
consoles after X is started.

MFC after:	Never, this is only a hack
2013-11-17 20:29:33 +00:00
Nathan Whitehorn
817ba5c0b8 Following the approach with ACPI DMAR on x86, split IOMMU handling into
a variant PCI bus instead of trying to shoehorn it into the PCI host bridge
adapter. Besides matching better the architecture on other platforms, this
also allows systems with multiple partitionable endpoints per PCI host
bridge to work correctly.
2013-11-12 16:15:09 +00:00
Nathan Whitehorn
629aa519d6 Make tsec work with the device tree present on the RB800. The previous code
assumed that the MDIO bus was a direct child of the Ethernet interface. It
may not be and indeed on many device trees is not. While here, add proper
locking for MII transactions, which may be on a bus shared by several MACs.

Hardware donated by:	Benjamin Perrault
2013-11-11 15:43:21 +00:00
Nathan Whitehorn
43a581e116 Allow OF_decode_addr() to also be able to map resources on big-endian
devices. To this end, make PCI device detection rely on the device_type
field rather than name, as per the standard.
2013-11-11 15:23:35 +00:00
Nathan Whitehorn
bcb6fb8b55 Consolidate Apple firmware hacks and improve them by switching on the
presence of mac-io devices in the tree, which uniquely identifies Apple
hardware.

MFC after:	6 weeks
2013-11-11 15:00:33 +00:00
Nathan Whitehorn
544234026d Allow PIC drivers to translate firmware sense codes for themselves. This
is designed to replace the tables in dev/fdt/fdt_ARCH.c, but will not
happen quite yet.
2013-10-24 15:37:32 +00:00
Nathan Whitehorn
f214848258 Add two new interfaces to ofw_bus:
- ofw_bus_map_intr()
  Maps an (iparent, IRQ) tuple to a system-global interrupt number in some
  platform dependent way. This is meant to be implemented as a replacement
  for [FDT_]MAP_IRQ() that is an MI interface that knows about the bus
  hierarchy.
- ofw_bus_config_intr()
  Configures an interrupt (previously mapped) based on firmware sense flags.
  This replaces manual interpretation of the sense field in bus drivers and
  will, in a follow-up, allow that interpretation to be redirected to the PIC
  drivers where it belongs. This will eventually replace the tables in
  /sys/dev/fdt/fdt_ARCH.c

The PowerPC/AIM code has been converted to use these globally, with an
implementation in terms of MAP_IRQ() and powerpc_config_intr(), assuming
OpenPIC, at the bus root in nexus(4). The ofw_bus_config_intr() will shortly
be integrated into pic_if.m and bounced through nexus into the PIC tree.

FDT integration will happen significantly later due to larger testing
requirements. This patch in general also lays the groundwork for the removal
of /sys/dev/fdt/fdt_ARCH.c and machine/fdt.h.
2013-10-23 17:24:21 +00:00
Nathan Whitehorn
17593f8612 Standards-conformance and code deduplication:
- Use bus reference phandles in place of FDT offsets as IRQ domain keys
- Unify the identical macio/fdt/mambo OpenPIC drivers into one
- Be more forgiving (following ePAPR) about what we need from the device
  tree to identify an OpenPIC
- Correctly map all IRQs into an interrupt domain
- Set IRQ_*_CONFORM for interrupts on an unknown PIC type instead of
  failing attachment for that device.
2013-10-22 14:07:57 +00:00
Nathan Whitehorn
d8bb357d2c Provide an interface for PCI bus drivers that need some of ofw_pci's
metadata during attach.
2013-10-21 13:57:34 +00:00
Nathan Whitehorn
6064b6ac48 Allow the OFW interrupt mapping code to work with PCI devices not enumerated
by Open Firmware, as in the case of FDT.
2013-10-21 00:04:26 +00:00
Nathan Whitehorn
9f70672718 Rework handling of ofw_quiesce(), making it the responsibility of the
platform modules. Whether to call this function or not is highly machine
dependent: on some systems, it is required, while on others it breaks
everything. Platform modules are in a better position to figure this
out. This is required for POWER hypervisor SCSI to work correctly. There
are no functional changes on Powermac systems.

Approved by:	re (kib)
2013-09-27 13:12:47 +00:00
Nathan Whitehorn
023864f69c Allow Open Firmware syscons to attach to devices without an "address"
property such as those found on some real and emulated IBM systems. The
approach, which is taken from Linux, is to scan through the PCI bars
until we find one large enough to contain the linear framebuffer and
which is ideally prefetchable if no "address" property can be found.
This makes the graphical console work with the pSeries target in QEMU.

Approved by:	re (delphij)
2013-09-26 22:47:02 +00:00
Nathan Whitehorn
982b134610 Only attach if properties we need (address, in particular) are present.
This is the correct version of r255420.

Approved by:	re (kib)
2013-09-17 17:31:53 +00:00
Nathan Whitehorn
1c5fc51cdf Add a loader tunable to use only device tree-provided PCI devices. This is
needed on some more fragile systems to avoid machine checks when blindly
probing the PCI bus. Also reduce ofw_pcibus's priority slightly so that it
can be overridden.

Approved by:	re (gjb)
2013-09-16 15:10:11 +00:00
Nathan Whitehorn
c088841850 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
2013-09-15 14:19:17 +00:00
Nathan Whitehorn
32fa1ceff1 Revert r255420. This seems to break some Powermac systems and will be
revisited much later.

Pointy hat to:		me
Approved by:		re (kib, implicit due to breakage 10 minutes ago)
2013-09-09 13:40:53 +00:00
Nathan Whitehorn
5d46492ddc Attach only on hardware that is actually supported as opposed to hardware
that seems like it has some of the problems we might want.

Approved by:	re (kib)
2013-09-09 12:54:08 +00:00
Nathan Whitehorn
e52f055d23 Use a spin lock instead of a mutex to gate RTAS. This is required if RTAS
calls are involved in interrupt handling.

Approved by:	re (kib)
2013-09-09 12:45:41 +00:00
Nathan Whitehorn
4eb54166aa Fix error in r252115: space for the softc needs to be allocated. This
seemed to be working by chance on most systems.
2013-09-07 20:52:31 +00:00
Justin Hibbits
98a737cf8f Micro-optimize OFW syscons 8-bit blank.
MFC after:	1 week
2013-08-06 03:09:44 +00:00
Justin Hibbits
15b5b0aca5 Increase the size of the OFW bounce buffer to 4 pages. With this I can now run
'ofwdump -ap' on my quad G5.

MFC after:	9.2 branch
2013-07-24 02:01:01 +00:00
Justin Hibbits
53c13dd1ab Cache the Open Firmware CPU properties at attach time, so we don't always
enter it at runtime to get static data.
2013-06-23 14:20:54 +00:00