No need to install kern.ldscript since /usr/lkm is gone and
modload(8) no longer uses a linker script.

branches: 1.1.2; 1.1.110; 1.1.114; 1.1.120; 1.1.122;
Install the kernel linker script in /usr/lkm/ldscript so that modload(8)
works without needing to resort to -A abuse. LKMs work cleanly on MIPS
now.

Use OBJCOPY_STRIPFLAGS instead of STRIPFLAGS.

branches: 1.72.14;
Produce elf32 images for mipsn64eb too

use ${MACHINE_MIPS64}

branches: 1.70.16;
ELF2ECOFF -> MIPS_ELF2ECOFF

- Determine KERN_AS automatically depending on whether OPT_MODULAR is
set or not, in the same way as libcompat.

- Specify OPT_MODULAR in the port Makefile instead of KERN_AS.

Now, KERN_AS=library is used for kernels without module(7) for all ports.

OK christos

branches: 1.68.2;
use the compiler way of passing arguments to the linker.

branches: 1.67.12;
leave the part for GCC >= 5.3 in.

Was a little over-eager and accidentally removed the else case.

GC workaround for GCC 4.8 fixed in GCC 5+

branches: 1.65.2; 1.65.4;
make sure we compile mips_fpu.c and fp.S with -mhard-float

Restrict float format hacks to gcc 4.8

gcc does not pass floating point options to the assembler
by default, because it is afraid that the stricter tests
will break userland code. The new binutils is pickier about
this. Gcc 5.x fixes the issue so for now, set explicitly
the assembler soft-float flags when we build the kernel.
see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64569

Define ${LINKSCRIPT} in one place.

branches: 1.61.2;
LINKSCRIPT is set only once, so use = not +=.

Use LINKSCRIPT.

Explicitly set KERN_AS (this could be done in /usr/src/sys/conf/Makefile.*)
so that modules work, on config files that did not set it explicitly. All
the files now use the standard logic, except the ones that set KERN_AS=obj
and Makefile.usermode which sets KERN_AS=library.

branches: 1.58.4; 1.58.14;
Major merge forward from matt-nb5-mips64.
New fixup code.
New common SPL code.
New common interrupt code.
Move related variables into structures.
Cleanup locore (move MD variable into it).
Kill StudlyCaps
Use PCU for FPU

Use elf32-ntrad{little,big}mips

Switch remaining platforms to modern CPP for assembler.

branches: 1.55.4; 1.55.6; 1.55.8;
Merge from matt-nb5-mips64
Merge mips-specific arch files.

Convert the recently introduced awk command to retrieve the value of the
option MODULAR to using %MODULAR%. While it is now possible to only
request the new version in the affected Makefiles, it is made mandatory for
everybody because I just fixed a bug in config(1) that would not make it
fail in the case of a syntax error in the Makefile template.

Now that "options MODULAR" is handled via defflag, the Makefile
generated by config(1) in the kernel compile directory no longer
contains IDENT=-DMODULAR. Instead, there's an opt_modular.h file that
might or might not contain "#define MODULAR 1".

Adapt to this by adding an OPT_MODULAR variable to relevant Makefiles,
set via an awk script that parses opt_modular.h.

branches: 1.52.2;
Clean-up makefile stub used to include in the build the binary HAL object

LKM -> MODULAR

branches: 1.50.6; 1.50.10; 1.50.16; 1.50.18; 1.50.20; 1.50.24;
Backout previous. vr_idle.S no longer depends on assym.h.

Another assym.h dependency for hpcmips

Missing assym.h dependency.

branches: 1.47.2; 1.47.8;
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: 1.46.10;
Preserve local symbols on linking a kernel so that
we can get more useful trace on ddb(4).

merge yamt-idlelwp branch. asked by core@. some ports still needs work.

from doc/BRANCHES:

idle lwp, and some changes depending on it.

1. separate context switching and thread scheduling.
(cf. gmcgarry_ctxsw)
2. implement idle lwp.
3. clean up related MD/MI interfaces.
4. make scheduler(s) modular.

branches: 1.44.6; 1.44.8; 1.44.12; 1.44.14; 1.44.20; 1.44.22;
Add -msym32 to CFLAGS when MACHINE_ARCH is mips64e[bl].

Since kernels are always run out of KSEG0 (0xffffffff.8xxxxxxx), we can
take advantage of that if we load a 32 bit address (0x8xxxxxxx) that it
will be sign-extended to 64 bits (0xffffffff.8xxxxxxx).

So instead of 6 instructions (2 lui, 2 daddiu, dsll32, daddu) to load an
address, the normal number of 2 instructions (lui, daddiu) will be used.

Thus telling gcc/gas that symbols will always be 32 bits significantly
shrinks (by 10%) and speeds up a MIPS64 kernel.

Sign extend DEFTEXTADDR on MIPS64.

Nuke unneeded LP64 conditional section

Add support for using the MIPS Atheros HAL.
Atheros WLAN added to default evbmips DBAU1500, DBAU1550, and MTX-1 configs.
Note that AR5312 config will require unique HAL that we don't have yet.

branches: 1.40.6; 1.40.8; 1.40.10; 1.40.12; 1.40.14;
Build libkern as a .o if LKMs are enabled so that all libkern functions
are available to LKMs, not just those needed by the kernel at link time.

From PR port-mips/31857 from Takehiko NOZAKI.

branches: 1.39.2;
s/GENASSYM/GENASSYM_CONF/ so we can use "GENASSYM" as the program name.

Set LP64 default to "no".

Rework previous slightly, so that ld is passed the right flags for 64-bit mode.

Allow arguments to as/ld to be specified in the kernel config file. Provide
a mechanism to override ranlib.

Add the %MAKEOPTIONSAPPEND token at the end of the file, after the
common Makefile.kern.inc has been included.

branches: 1.34.4;
Define ELF2ECOFF here for native build.

(BTW, objcopy with OMAGIC kernel won't work on old pmax and sgimips machines?)

Add some dependancies on assym.h; helps "make -j N" kernel builds.

branches: 1.32.6;
Remove the explicit `makeoptions MACHINE_ARCH="mipse{b,l}"' for kernel
builds and use the endianness of the toolchain being used to determine
the endianness of the kernel.

Build with kernel with -msoft-float.

* Add -mno-abicalls to AFLAGS.
* GCC 3.3's traditional preprocessor functions properly now, so we
no longer need to special-case it.

Nuke the CROSSDIR stuff.

No need to pass -mno-half-pic; NetBSD's compiler does not generate
half-pic references.

Don't use -traditional-cpp if HAVE_GCC3.

branches: 1.26.6; 1.26.8;
Don't explicitly depend locore_*.S and fp.S on assym.h - this is done
for all .S files in /sys/conf/Makefile.kern.inc.

Roll the rest of the ports over to the new MI kernel build machinery.
Any problems reported by testers have been fixed, and massive
cross-compiling of kernels has shown that any problems that remain
with actually building kernels are not related to this.

branches: 1.24.2;
remove " in assignment of ENDIAN.
fixes mipseb link breakage.

Change defaults for kernel compiles. Default all to USETOOLS?=no and have
the etc Makefile override that by putting USETOOLS into $.MAKEOVERRIDES
This way the default for kernel compiles is still to use the installed
toolchain instead of depending on $TOOLDIR. $TOOLDIR can be used by
simply adding USETOOLS=yes to the command line as usual.

Adjust each ports template to set the default no setting and also pull in
bsd.own.mk if they weren't already to ensure they'll build correctly
with the new toolchain setup.

branches: 1.22.2;
For MIPS kernel Makefiles, don't set ENDIAN in std.${MACHINE}. Instead,
explicitly set MACHINE_ARCH to the appropriate thing. Makefile.mips will
then set all of the internal variables it needs to accordingly.

Use MACHINE, not TARGET_MACHINE.

R5900 support.
COP0_SYNC
In R5900 mtc0, tlbr, tlbp, tlbwi, tlbwr must be followed by sync.p.
if defined MIPS3_5900, COP0_SYNC is defined as sync.p. else nothing.
IPL_ICU_MASK
mask interrupt directly ICU instead of SR.IM.
I've added this feature to support software interrupt for R5900.
and this option may be useful for platform which has cascaded ICU.

Use a separate variable (${KERNLDSCRIPT}) for the name of the kernel
ld script, so it can be used in other places.

Use ".-include" instead of the ".if exists(...) ..." dance.

Use a single ldscript instead of separate scripts for either endianness;
use command line parameters to ld(1) instead to set the endian format.
Clean up some endian decisions in mips/conf/Makefile.mips.
Wrap some long lines.

branches: 1.16.2;
By adding a well-placed space or two, 'make depend' no longer loses
due to a directory name like 'arc.current' messing up a sed substitution.

Suppress warning message:
warning: duplicate script for target "fp.o" ignored
And delete verbose ifs.

branches: 1.14.2;
define _KERNEL_OPT as well as _KERNEL. we will use this in the future to
get kernel "opt_foo.h" headers, rather than _KERNEL && !_LKM.

Allow overriding the 'install' target.

(I have a nice 'install' target for cobalts here, but that only works there.
I guess I'll put that into htdocs now that the cobalt port uses Makefile.mips)

Define ${OBJCOPY}.

XXX: Should we use ${CROSSDIR} here or not?

branches: 1.11.2;
- don't ignore DEFCOPTS (Makefile.mips).
- DEFCOPTS of hpcmips is "-Os -mmemcpy" (std.hpcmips).

delete obsolete comment

cpp/lorder/mkdep don't have cross specific versions.

branches: 1.8.2;
Add DEFGP/CROSSDIR for hpcmips.

Remove redundant depend of fp.S

Include FP support if NOFPU is *NOT* defined.

Revert back to a machinearch (really cputype) of mips. Put ENDIAN back.

Deal with lack of floating point on hpcmips, etc.

Change arch from mips to mipsel/mipseb as appropriate. Nuke the ENDIAN
makeoption. Key off MACHINE_ARCH for adding -EB/-EL to CFLAGS/AFLAGS/LD/
LINKFLAGS.

Add a POST_STRIP_SYSTEM_LD_FLAGS for mipsco and pmax.

Start using a Makefile.mips. Use a combination of makeoptions and
Makefile.sgimips.inc which has sgimips specific stuff.

Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix

branches: 1.3.14; 1.3.30; 1.3.32; 1.3.36;
Make usb_dma a dependency of ahci(4), since it needs usb_allocmem(9).

branches: 1.2.2; 1.2.4; 1.2.10; 1.2.22; 1.2.68; 1.2.74;
Comment out admflash, I have not supplied a source file for that,
yet.

Add a port to the Infineon ADM5120.

Basics: the ADM5120 is a 175 MHz MIPS32 4Kc processor featuring a
6-port ethernet 10/100 switch with Auto MDI/X, a PCI controller,
USB 1.1 controller, UART, watchdog timer, eight GPIO pins, and a
multiport memory controller with both NOR and NAND flash support.
This code supports most of the devices on the ADM5120, including
the 6-port switch (each port attaches as an ethernet, admsw0 through
admsw5), the PCI controller, USB controller, GPIO, watchdog, and
UART.

Remaining work: the port includes no NOR/NAND flash drivers. No
bootloader is included. I have only tested the PCI bus driver with
the use of one PCI slot on the RouterBOARD 153. It is not possible
to exploit the capabilities of the ethernet switch using bridge(4).
I have only netbooted the ADM5120 on the RB153. Booting other
boards, and booting from flash memory, remains to be done.

Hardware availability: many low-cost routers, including the
RouterBOARD 100 series at RouterBOARD.com, use the Infineon ADM5120
processor.

Credits: Ruslan Ermilov and Vsevolod Lobko ported to the ADM5120,
and they wrote device drivers for the UART, USB controller, and
10/100 switch. Matt Isaacs brought the port up-to-date with
NetBSD-current, made it compile, and ran it first on the RB153.
I added drivers for the PCI controller, GPIO, and watchdog timer.
I produced the bus attachment for the CompactFlash slot with advice
from Mikrotik technical support and from Matt Thomas.

Merge isaki-audio2 branch, the overhaul of audio subsystem.
- Interrupt-oriented system rather than thread-oriented.
- Improve stability, quality and performance.
- Split playback and record cleanly. Improve halfduplex support.
- Many bugs are fixed including deadlocks, resource leaks, abuses, etc.
- Simplify audio filter mechanism. The encoding/channels/frequency
conversions are completely handled in the upper layer. So the hard-
ware driver only converts its hardware encoding (if necessary).
- audio_hw_if changes:
- Obsoletes query_encoding and add query_format instead.
- Obsoletes set_params and add set_format instead.
- Remove drain, setfd, mappage.
- The call sequences are changed.
- ioctl AUDIO_GETFD/SETFD, AUDIO_GETCHAN/SETCHAN are obsoleted.
- ioctl AUDIO_{QUERY,GET,SET}FORMAT are introduced.
- cleanup config attributes: au*conv and mulaw.
- All hardware drivers should follow it (I've done as much as possible).

Some file paths are changed:
- dev/audio.c -> dev/audio/audio.c (rewritten)
- dev/audiovar.h -> dev/audio/audiovar.h
- dev/audio_dai.h -> dev/audio/audio_dai.h
- dev/audio_if.h -> dev/audio/audio_if.h
- dev/audiobell.c -> dev/audio/audiobell.c
- dev/audiobellvar.h -> dev/audio/audiobellvar.h
- dev/mulaw.[ch] -> dev/audio/mulaw.[ch] + dev/audio/alaw.c

branches: 1.13.144; 1.13.146;
Add Alchemy PSC SPI bus protocol driver. Not activated on any boards yet,
that requires an evbmips commit.

branches: 1.12.4; 1.12.6;
Add an option COM_REGMAP to allow com(4) to use an array of register indices.
This allows us to convert aucom to just another com attachment, and cleanup
some code in the com_arbus.c.

Additionally, we use a common com_cleanup routine rather than having a
zillion copies of it in the attachment points.

This has been tested on a number architectures, and it has been shown to get
close to comparable performance when COM_REGMAP is defined, and comparable
when it is not defined.

Approved by core@. Fixes PR port-evbmips/32362.

branches: 1.11.8;
Add support for On-chip PSC SMBus protocol.

branches: 1.10.2;
Add Au1XXX PSC(Programable Serial Controller) bus-type driver.
PSC supports four protocols (AC97, I2S, SPI, SMBus).
These protocol drivers will be configured on the bus.

Initial commit of aupcmcia chip driver. It requires board specific logic
(coming in a the follow up commit for dbau1550 only), and is not yet complete.
It has serious problems, enough that it isn't yet usable, although the
functionality is all basically fleshed out. It is not enabled in any
default kernels at this point, so it should be benign. Hopefully the
bugs will soon be worked out and these caveats can be removed.

Reenable PCI on DBAU1500. May still be useful for PIO devices. Comments
in the config are left intact, though.
Add a PMAP-driven bus_space for access to upper memory, instead of using
wired entries.
Convert aupci to use said bus_space -- no measured performance impact.

Add GPIO driver, and GPIO access functions for other subsystems.

Add Au1550 PCI support (Au1500 not yet, coming shortly).
Closes PR port-evbmips/32087.
Reviewed by simonb@ (Also, earlier, matt@, and tsutsui@.)

Fix up incorrect ICU reporting, add processor specific switch tables for
IRQ routing and such.

Closes PR port-evbmips/31992.
Reviewed by simonb@, matt@, and izumi@

branches: 1.4.2; 1.4.4; 1.4.6;
merge ktrace-lwp.

branches: 1.3.16;
Add a "COM_AU1x00" option, similar to COM_PXA2X0, for enabling Au1x00
features in the "com" driver.

branches: 1.2.2;
s/ohci.c/ohci_aubus.c/

branches: 1.1.2; 1.1.4; 1.1.6;
Add support for the the Alchemy Semiconductor Au1x00 series on-chip
devices. Currently the serial ports and ethernet MAC have working
drivers, and this has only been physically tested on the Au1000 CPU,
but these devices should work on the Au1100 and Au1500 CPUs too.

Fix machine/ includes

Revamp / rework the Atheros MIPS SoC support. Add initial support for the
AR71xx (MIPS 24K core) SoC and the AR9344 (MIPS 74K core) SoC. Force use
of -mips32 for all Atheros kernels. Make code much more common.

Add Atheros SPI controller. This is a "pseudo-controller", as it has some
artificial limitations which really only make it good for use with serial
flash devices. One of the more annoying limitations is a restriction that
it can only transfer 8 bytes at a time. (4 command/address, plus 4 data.)

The driver includes design to work around those limitations, but these
changes are only appropriate for serial flash devices.

This driver is designed to run in interrupt driven mode, but due to lack
of adequate documentation, we run it in polled mode.

A subsequent commit will introduce the MI M25P flash driver, which has been
tested and is known to function somewhat reasonably..

Initial import of AR2315 support, specifically the Meraki Mini (see
the Meraki web site at http://www.meraki.net/ ) This includes changes
to the AR5312 to make it more conducive to sharing code with the AR5315,
and also includes improved early console support.

All devices including ethernet and wlan interfaces on the Meraki Mini are
functional with this port, _except_ SPI flash, which will be introduced
later.

This port was funded by the Champaign-Urbana Communit Wireless Network
Project (CUWiN).

branches: 1.6.2; 1.6.4; 1.6.6;
This is a boat-load of changes designed to finish parameterizing the
stuff necessary to separate out AR5312 from AR5315. This includes:

1) rework of arbus IRQs, so that IRQs are now seperately specified
as either MISC or CPU irqs
2) move board/chip-specific addresses into chip-dependent file
3) unencumber argpio from ar5312 specifics, using properties to pass
details such as reset-pin and sysled-pin.
4) an option to select which WiSoC is to be configured is provided.

AR5315 support should be forthcoming shortly now.

First pass at cleanup AR5312 WiSoC support to enable better & cleaner
sharing of code with the AR5315, which has many similarities, but many
differences from the AR5312.

No functional change at this time, other than the cpu_model string
(and also sysctl.hw.model node) is changed to reflect the WiSoC cpu
name rather than the identification string in ROM (which tends to not
be very informative.)

Add AR531X GPIO support. This also registers the reset button with sysmon,
so that when it is pressed the default reset button action (currently board
reset, no change to data in flash) is taken.

While here, remove the AR531X generic config, because it just doesn't make
sense.

branches: 1.3.2; 1.3.4;
Rename flash to athflash to reflect MD nature. Approved by simon@ and dyoung@

branches: 1.2.2;
integrate kauth.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8;
Initial import of Atheros AR531X SoC support. Currently the onboard ethernet
and serial ports are supported, and the system appears stable with an NFS
mounted root. An earlier version of the code was reviewed by simon@, but it
has since had numerous improvements and cleanups.


At the moment, only AR5312 is known to work, but I suspect AR2313 will work
as well. Later 2315/2316 parts are substantially different, and are not yet
supported. Wifi and Marvell switch support found on some designs are not yet
supported.

Platforms known to include AR5312 include Senao Aries 2 (AP5054) and Netgear
WGU624.

branches: 1.1.2;
Extract bonito support from sys/arch/algor/conf/files.algor so it can be
used by multiple ports.

branches: 1.10.8;
Provide and use some CP0 accessor functions instead of M[TF]C0 macros
for readability.

While here convert some other M[TF]C0 uses to already exising accessor
functions, e.g. mipsNN_cp0_ebase_read

Move arch/mips/mips/bus_dma.c to correct location

add a driver for the chip's EFUSE interface, use it to find the MAC address
for the onboard ethernet controller

add driver for jz4780 random number generator
From Michael McConville

- get rid of private bus space in ingenic_com.c
- move com to apbus
- attach the other UARTs

preliminary driver for JZ4780's on-chip SMBus controllers
needs more work but it's good enough for talking to an RTC

config goop for dme

drivers for on-chip ohci and ehci
ohci works fine, ehci doesn't like high speed devices

config goop for apbus and dwc2/usb

branches: 1.1.2;
initial support for CI20 / Ingenic JZ4780
not much there yet, it loads, attaches a serial port and you can drop into
ddb

Alignment nit.

branches: 1.83.2; 1.83.4;
Work in progress for MIPS modules. Only tested on mipseb64, not yet
enabled anywhere.

Remove duplicate out-of-place comment.

branches: 1.81.2; 1.81.4;
make process_machdep.c included always since it provides register i/o used by
sys_process_getlwpstatus.c which is always included.

harmonize process_machdep.c inclusion.

move stacktrace_subr() from trap.c into new mips_stacktrace.c so
it can be shared between ddb, other mips kernel components (see
locore), and an upcoming crash(8) port.

remove second copy of kdbpeek() (hidden by old DDB_TRACE
option, but they're functionally equivalent.)

tested on octeon.

ok simonb@

More whitespace

defflag foo on each line to make searching easier.

sort some lines and fix some indentation while I'm here.

Merge the [pgoyette-compat] branch

branches: 1.75.16; 1.75.18;
Use sdcache routines.
Remove old cache support.
Switch to new cache routines.

Change MIPS to use the common pmap code.
Switch to 8KB pages on CPUs with a R4K MMU.
Simplify cache code.
Merge in most of changes from matt-mips64 branch

Initial import of Cavium Octeon and Octeon Plus SoC and
specifically Ubiquiti Networks EdgeRouter LITE support.
Currently the ethernet and uart are worked.
This support was contributed by Internet Initiative Japan Inc.

branches: 1.72.12; 1.72.30;
Add support for the MIPS DSP ASE (as a second PCU).

Add support for a loongson2_subr.S. This is needed since that chip needs
special handling to manually flush the ITLB on TLB updates.

Welcome to 5.99.53! Merge rmind-uvmplock branch:

- Reorganize locking in UVM and provide extra serialisation for pmap(9).
New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
kernel-lock on some ports). Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.

branches: 1.69.2;
Remove IRIX emulation

- option MIPS_DDB_WATCH is deprecated, removed

slight reordering. no functional change.

Add separate support for MIPS32R2 and MIPS64R2.
Use EHB/SSNOP and jr.hb ra as appropriate (COP0_SYNC now uses them).
Add support for COP_0_HWRENA and COP_0_USERLOCAL (use by rdhwr $3,$29
instruction for TLS support).
Add mips3+ reserved instruction handler to emulate rdhwr is many fewer
instructions.

Major merge forward from matt-nb5-mips64.
New fixup code.
New common SPL code.
New common interrupt code.
Move related variables into structures.
Cleanup locore (move MD variable into it).
Kill StudlyCaps
Use PCU for FPU

branches: 1.64.2; 1.64.4; 1.64.6; 1.64.8;
Merge from matt-nb5-mips64
Merge mips-specific arch files.

Add latent ENABLE_MIPS_16KB_PAGE option.

Add loongson2 specific cache ops

Change MIPS64_LOONGSON2 to MIP3_LOONGSON2 since it's a MIPS3 and not MIPS64.

Add MIPS64_LOONGSON2F since it needs some special help in various places.

Make the emulations, exec formats, coredump, NFS, and the NFS server
into modules. By and large this commit:

- shuffles header files and ifdefs
- splits code out where necessary to be modular
- adds module glue for each of the components
- adds/replaces hooks for things that can be installed at runtime

branches: 1.58.6; 1.58.10; 1.58.16; 1.58.18; 1.58.24;
Refactor in_cksum/in4_cksum/in6_cksum implementations:
- All three functions are included in the kernel by default.
They call a backend function cpu_in_cksum after possibly
computing the checksum of the pseudo header.
- cpu_in_cksum is the core to implement the one-complement sum.
The default implementation is moderate fast on most platforms
and provides a 32bit accumulator with 16bit addends for L32 platforms
and a 64bit accumulator with 32bit addends for L64 platforms.
It handles edge cases like very large mbuf chains (could happen with
native IPv6 in the future) and provides a good base for new native
implementations.
- Modify i386 and amd64 assembly to use the new interface.

This disables the MD implementations on !x86 until the conversion is
done. For Alpha, the portable version is faster.

branches: 1.57.2;
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: 1.56.2; 1.56.10;
Remove leftover netns stuff.

branches: 1.55.6; 1.55.8; 1.55.14;
Merge newlock2 to head.

branches: 1.54.8;
Update FPE trapsignal functions for new siginfo,
based on a patch provided by Matthias Drochner.

Ok'ed by christos, and fixes PR port-mips/26410.

branches: 1.53.4; 1.53.6; 1.53.8; 1.53.10; 1.53.12;
merge ktrace-lwp.

Add MI mips3 wired map functions based on patch in port-mips/31915
from Garrett D'Amore of Tadpole Computer Inc.
Please refer discussion filed in the PR for details.

branches: 1.51.6; 1.51.8; 1.51.14;
-remove definition of "struct sigframe" -- haven't found a use of it
(should fix build problems w/o COMPAT_16 reported by Markus W Kilbinger
per PR port-mips/29041 and by Havard Eidnes)
-further shuffle COMPAT_* conditionals to allow COMPAT_ULTRIX
w/o COMPAT_16

branches: 1.50.8;
fix some problems with FPU exception signaling:
-The MachFPTrap did generate pre-siginfo arguments to trapsignal(),
leading to an immediate crash.
Put the siginfo generation into a separate .c file for simplicity.
-The exception bits in MIPS_FPU_CSR didn't get cleared, leading to
trouble later ("kernel used FPU" on pmax).
XXX This should probably be done for the "unimplemented fpu instruction"
case as well, but I don't know how to test this. Or, even better -
centralize the CSR clearing before the branch in MachFPTrap.

Remove preprocessor conditional MIPS3_L2CACHE_ABSENT, which was rendered
superfluous by Tsutsui-san's previous changes.

(this change differs slightly from that posted to port-mips@, as
mips_flushcache_allpvh should be compiled iff MIPS3_PLUS is defined and
MIPS3_L2CACHE_ABSENT should be removed from files.mips as well)

add compat_16_machdep.c

Add R10000 cache ops, written by KIYOHARA Takashi and posted on port-sgimips.
Enabled by options ENABLE_MIPS4_CACHE_R10K for now.

branches: 1.46.2;
Add support for R5k secondary caches, from code Chris Sekiya sent me a long
time ago, with small tweaks by me. Since the R5k doesn't do VCE, the pmap
still needs to be whacked for R5kSC CPUs to work correctly, but this is a
start.

Put the MIPS64_SB1 option in opt_cputype.h.

- Make monolistic files into smaller manageable pieces, resulting
three new files;
sig_machdep.c (from mips_machdep.c)
copy.S and sigcode.S (from locore.S)
- Nuke the local use of struct sigframe, which is now identical to
struct sigcontext, from sendsig() as the consequence of new signal
trampoline.

Note a new MIPS64_SB1 option that should be included in opt_cputype.h
one day.

Overhaul the emulation facility. We do this by:

- accumulating all emulation code (including floating-point) in one place
- steal MachFPInterrupt() back from SOFTFLOAT for use only with interrupts
and traps from *real* FPUs
- introducing MachEmulateInst() as a common dispatch point for all
emulated instructions
- cleaning up emulation dispatch in trap()

Also, while we're here, implement MIPS2 LL/SC/SYNC emulation for MIPS1.

Tested on r3k with and without SOFTFLOAT enabled.

Use the current MIPS in_cksum for in4_cksum too.

branches: 1.40.2;
Don't make arch/mips/mips/mips_mcclock.c mandatory for all mips ports
with an mcclock - pmax is the only one currently using this.

All the mips ports had an identical procfs_machdep.c, so use a common
file under arch/mips/mips.

Add support for MIPS32 and MIPS64 architectures:
- Build mips3/5900/32/64 support subroutines.
- Move arch/mips/mips/fp.S to central location.
- Move NOFPU to opt_cputype.h.

Options MIPS3_5200 and MIPS3_L2CACHE_PRESENT are gone.

TX39, R5900 cache configuration.

- convert usage of "defopt" to "defflag" where the relevant option does
not support a value (e.g., it's to be used as "options FOO" instead of
"options FOO=xxx"). options that take a value were converted to
defparam recently.
- minor whitespace & formatting cleanups

Added COMPAT_IRIX (being developped, not functionnal at that time)

cleanup:
options SPACE TAB
makeoptions TAB
psuedo-device TAB
remove trailing whitespace
replace multiple spaces -> tabs
options "FOO" -> options FOO
options "FOO=bar" -> options FOO=bar
options "FOO=\"bar\"" -> options FOO="\"bar\""

branches: 1.32.2;
Merge the thorpej-mips-cache branch onto the trunk. This is an
overhaul of how caches are handled for NetBSD's MIPS ports.

branches: 1.31.2;
Moved COMPAT_LINUX config stuff from arch/sgimips to arch/mips, so that it's
available on all Mips ports.

branches: 1.30.2; 1.30.4;
New syscall entry implementation based on the Alpha version
as hacked by mycroft.
- Use syscall_intern() to give a process a plain or fancy
syscall based on ktrace flags.
- Avoid copying from the trapframe into a local array as much
as possible.

Yields roughly 5% improvement on a 25MHz R3000 (DECstation 5000/200)
on a simple syscall benchmark.

There's still some work that can be done using __HAVE_MINIMAL_EMUL.

Add MIPS3_NO_PV_UNCACHED option to handle virtual coherency issues by
only allowing one mapping at a time instead of mapping uncached. Done
by removing conflicting mappings from the pmap when entering a new
mapping. UVM will remember and re-fault the requested page when needed
for the original mapping. Originally done to support our internal machine
that does not support uncached memory completely. Not enabled by default
currently. It may make sense to try on the cobalt or sgi ports.

provide indicators of a few more things that might go in opt_cputype.h

Pull in geocast mips ddb improvements and start bringing in kgdb support.
Add ddb support for QED opcodes, fill in enough routines so "next" usually
works, kdbpoke support for any size. Add callback that ports can hook when
entering and leaving ddb. This can be used for things like turning
off watchdogs while in ddb.

MachForceCacheUpdate and cacheflush_bug have never been used in NetBSD,
so remove references them, and do a little other cleanup.

Populate the cputype defopt (not enabled yet).

Allow non-pmax to use COMPAT_ULTRIX.

Allow arch-specific code to specify in4_cksum() like it can specify
in_cksum().

FIX:
port-mips/9016 [serious/medium]:
MIPS FPU emulator points wrong epc on exception case

Responsible: port-mips-maintainer (NetBSD/mips Portmasters)
State: open
Class: sw-bug
Originator: Shuichiro URATA
Release: current 12/11/1999
Arrival-Date: Fri Dec 17 10:18:00 1999
commit patch
http://www.a-r.org/~ur/softfloat1211.diff.gz
by Shuichiro URATA (ur@a-r.org)

on port-mips@netbsd.org:
Shuichiro URATA <ur@a-r.org> makes kernel softfloat emulation code.

http://www.a-r.org/~ur/softfloat1116.diff.gz

is Patch for
sys/arch/mips/conf/files.mips
sys/arch/mips/mips/fp.S
sys/arch/mips/mips/fpemu.c
sys/arch/mips/mips/genassym.cf
sys/arch/mips/mips/locore.S
sys/arch/mips/mips/mips_machdep.c
sys/arch/mips/mips/process_machdep.c
sys/arch/mips/mips/trap.c
sys/arch/mips/mips/vm_machdep.c
After apply this patch,pmax package binary works on hpcmips!

branches: 1.20.2; 1.20.8;
Nuke register and remove trailling white space.

branches: 1.19.4;
Add defopt opt_mips_cache.h and allow 'clock' device to not require the mc6xx files

compat_13_sigreturn is needed for compat_ultrix too

Make signal delivery work again.

Add empty opt_cputype.h to satisfy changes committed during
defopt'ing of network options.

Configure mips_mclock if "clock|mccclock".

All(?) ARC boxes use mcclock, but QBus decstations use the same
time-of-year clock architecturally mandated for VAXes.

RCSID Police.

Fix for mbufs that start on odd-byte-aligned boundaries, and use.

MIPS cpu-speed detection using mc146818 clock.

Compute CPU speed(MHz) and loop multiplier for DELAY() based on
counting empty loop between mcclock ticks. New global: cpu_mhz.
Change pmax/pmax/machdep.c to build baseboard model names from cpu_mhz.
Set 'cpuspeed' for more realistic DELAY() on mips3 models.

Mips CPU constants, testing, and calibration from D. Sean Davidson
<davidson@zk3.dec.com> and Simon Burge <simonb@telstra.com.au>.

branches: 1.11.2;
revert to MI in_cksum code.

mips-tuned bcopy from Jon Kay (UCSD) released under BSD copyright,
with standard BSD in_cksum() interface by Jonathan Stone.

Add ddb to mips/conf/files.mips. Garbage-collect mdb.

Fix typo.
Include minidebug.c with options MDB.

Use generic MIPS pmap vm_machdep.c

Move the mips sys_machdep.c from pmax/pmax to mips/mips, to enforce a
common sysarch on all mips ports.

Eliminate old mips/mips/elf.c ELF exec code.
Don't call into from the a.out exec hook; don't configure it into kernels.

Change pmax port over to using ``mips MI'' trap handler.

Add arch/mips/mips/mips_machdep.c, it's now compiled as a separate file.

Add mips/mips/mem.c and mips/mips/process_machdep.c

Kernel config file for source code shared by mips-based NetBSD ports.

Step towards modularizing the Flattened Device Tree code.

Define attributes for each of the specific device bindings: clock,
dai, dma, gpio, i2c, iommu, mbox, mmc_pwrseq, phy, power, power domain,
pwm, regulator, reset controller, spi, system controller, pin
controller. Include these support files only if either a provider
or consumer with one of these attributes is present in the kernel
config.

Add the necessary attributes to the device / attach declarations for
each provider and consumer.

There are some bindings that are consumed by generic code (iommu, pinctrl,
power, power domain). Provide weak stubs for these routines to handle
situations where there is no provider.

No actual code changed; NFCI.

mips/conf/files.octeon: octrnm does not depend on rnd

Whether or not we have /dev/random and /dev/urandom baked into the
kernel, configuring `octrnm* at ...' in the kernel config requires
octeon_rnm.c.

Related to PR kern/46728.

Add USB3 support.

Add driver for Cavium Interrupt Bus.

FDT support for Cavium OCTEON MIPS SoCs. WIP.

Redo cnmac attachments - cnmacM @ gmxN @ pip0 @ iobus

Missed one file - thanks martin@.

Remove unmaintained CNMAC_DEBUG debug code.

Finish CPU core support for Octeon Cavium CN70XX:
- decode actual CPU name
- per CPU core reset logic (partially adapted from OpenBSD)
- handle Octeon 3 ioclock rate differences to other cores (from OpenBSD)

Rename all Cavium Octeon device driver functions, structs etc from
"octeon_foo" to "octfoo", except "octeon_eth" becomes "cnmac".

Clean up Cavium Octeon device names. Rename devices from "octeon_foo"
to "octfoo" - this follows the naming conventions used by many other
MIPS CPUs.

branches: 1.4.2; 1.4.18;
Add a wdog for octeon

Rework cavium support in preparation for MULTIPROCESSOR support

Use dwc2 instead of octeon_usbc, and unify octeon_usbn to new octeon_dwctwo.
Internal USB memory stick of EdgeRouter Lite works now.

Initial import of Cavium Octeon and Octeon Plus SoC and
specifically Ubiquiti Networks EdgeRouter LITE support.
Currently the ethernet and uart are worked.
This support was contributed by Internet Initiative Japan Inc.

Add pci attachment

branches: 1.3.2; 1.3.12; 1.3.16; 1.3.26;
CFI NOR support for mips/ralink

Bring forward from matt-nb5-mips64. Support for Ralink RT3883 MIPS 74K SoC
from CradlePoint Technology.

branches: 1.1.2;
file files.ralink was initially added on branch matt-nb5-mips64.

s/periperal/peripheral/ in comments.

branches: 1.4.92;
- add config for gpio
- add config for iobus, nand, flash

Major merge forward from matt-nb5-mips64.
New fixup code.
New common SPL code.
New common interrupt code.
Move related variables into structures.
Cleanup locore (move MD variable into it).
Kill StudlyCaps
Use PCU for FPU

branches: 1.2.4; 1.2.6; 1.2.8; 1.2.10;
Merge from matt-nb5-mips64
Merge mips-specific arch files.

branches: 1.1.2;
file files.rmixl was initially added on branch matt-nb5-mips64.

Fix various typos, mainly in comments.

mostly converted sbmips -> evbmips. the SBMIPS kernel builds fully
sans disksubr.c. intr.h does not need any additional fixes now,
only disklabel.h.

also test-built some other mips kernels.

branches: 1.7.14; 1.7.32; 1.7.48;
Major merge forward from matt-nb5-mips64.
New fixup code.
New common SPL code.
New common interrupt code.
Move related variables into structures.
Cleanup locore (move MD variable into it).
Kill StudlyCaps
Use PCU for FPU

branches: 1.6.4; 1.6.6; 1.6.8;
Remove many magic numbers for addresses and interrupt numbers, and use
constants defined in SiByte/Broadcom standard header files. Switch from
using offsets for locators to actual addresses.

Tested on a swarm (my rhone is dead, but should be OK there too).

branches: 1.5.106; 1.5.124;
Rename the "strtc" device to "m41t81rtc" so that it doesn't conflict with
the MI i2c "strtc" device.
XXX: This should use the MI "strtc" device - the M41T81 should be
compatible enough with the M41ST84 currently supported by that
driver.

branches: 1.4.6;
Add support for the ST M41T81 RTC found on pass 2 swarm boards.
XXX: Much of this should live in arch/sbmips instead of arch/mips/sibyte.
XXX: These should be replaced with MI SMBus drivers one day.

Add support for the watchdog timers on the BCM1xxx parts.

Add an extremely rough SMBus handler and RTC driver. This will be
cleaned up significantly when we have an MI SMBus framework, but at
least we can see the RTC on the swarm now.

branches: 1.1.4; 1.1.8; 1.1.10;
Add support for the on-chip peripherals on the Broadcom SiByte SB1250 CPU
and support routines for the Broadcom CFE (Common Firmware Environment).

This code is provided by the Broadband Processor Business Unit at
Broadcom Corp with minor updates by me.

Merge the .text.* sections into the .text section on MIPS, SPARC and
SPARC64 as is done on all other ports. Mostly costmetic, but does mean
that main() now appears before the _etext symbol instead of after it.

Replace a constant in ldscript.

Don't mention stab and DWARF sections, because these (poorly mtaintained)
lists only help to make them harder to read.

If those sections are found in inputs, they simply appear in outputs as
orphaned sections, sorted by section types and attributes.

I bet setting search-directory for ld.so is useless in any kernel.

Indent with 2 spaces.

branches: 1.7.14; 1.7.32;
Add missing .debug lines from usr/libdata/ldscripts
Add missing .mdebug lines from usr/libdata/ldscripts
Fixes PR/40522

Major merge forward from matt-nb5-mips64.
New fixup code.
New common SPL code.
New common interrupt code.
Move related variables into structures.
Cleanup locore (move MD variable into it).
Kill StudlyCaps
Use PCU for FPU

branches: 1.5.78; 1.5.82; 1.5.88; 1.5.90;
Put .rodata.str1.4 and .rodata.cst4 sections by gcc4 into .rodata section.
Fixes malloc(9) failure at early boot on newsmips.

branches: 1.4.4; 1.4.36; 1.4.50; 1.4.54;
Use a single ldscript instead of separate scripts for either endianness;
use command line parameters to ld(1) instead to set the endian format.
Clean up some endian decisions in mips/conf/Makefile.mips.
Wrap some long lines.

branches: 1.3.2; 1.3.4;
Also share BE ldscripts.

branches: 1.2.24;
Set kernel text start address in port-specific Makefile, not ldscript.

GNU ld script for linking mips kernels, contributed by Arne Juul.

Use a single ldscript instead of separate scripts for either endianness;
use command line parameters to ld(1) instead to set the endian format.
Clean up some endian decisions in mips/conf/Makefile.mips.
Wrap some long lines.

branches: 1.3.2; 1.3.4;
Remove 4096-byte gap between .reginfo and .data, suggested by
Ian Taylor <ian@zembu.com>.

branches: 1.2.6; 1.2.8;
Fix RCS ID line.

Also share BE ldscripts.

Use a single ldscript instead of separate scripts for either endianness;
use command line parameters to ld(1) instead to set the endian format.
Clean up some endian decisions in mips/conf/Makefile.mips.
Wrap some long lines.

branches: 1.2.2; 1.2.4;
Remove 4096-byte gap between .reginfo and .data, suggested by
Ian Taylor <ian@zembu.com>.

branches: 1.1.6; 1.1.8;
Also share BE ldscripts.

Merge the .text.* sections into the .text section on MIPS, SPARC and
SPARC64 as is done on all other ports. Mostly costmetic, but does mean
that main() now appears before the _etext symbol instead of after it.

.rel/.rela should not be generated in kernels.

Indent with 2 spaces.

branches: 1.5.6;
discard eh sections

branches: 1.4.8; 1.4.18; 1.4.22;
Merge .rodata.* sections (like .rodata.str1.4) into .rodata section.
Newer binutils creates such sections and old firmware might be confused.

branches: 1.3.4; 1.3.126; 1.3.146; 1.3.148;
Use a single ldscript instead of separate scripts for either endianness;
use command line parameters to ld(1) instead to set the endian format.
Clean up some endian decisions in mips/conf/Makefile.mips.
Wrap some long lines.

branches: 1.2.2; 1.2.4;
Also share BE ldscripts.

branches: 1.1.2; 1.1.20;
GNU ld script for linking standalone MIPS code (e.g., bootblocks).

Use a single ldscript instead of separate scripts for either endianness;
use command line parameters to ld(1) instead to set the endian format.
Clean up some endian decisions in mips/conf/Makefile.mips.
Wrap some long lines.

branches: 1.2.2; 1.2.4; 1.2.6;
Oops.

branches: 1.1.4;
Also share BE ldscripts.

Use a single ldscript instead of separate scripts for either endianness;
use command line parameters to ld(1) instead to set the endian format.
Clean up some endian decisions in mips/conf/Makefile.mips.
Wrap some long lines.

branches: 1.1.6; 1.1.8; 1.1.10;
Also share BE ldscripts.

Revert rev 1.5 - put the NOFPU option back. Older cnMIPS cores don't
have an FPU.

branches: 1.5.2; 1.5.4;
Delete the NOFPU option. These CPUs do have an FPU. Allows o32
binaries to work now.

branches: 1.4.2; 1.4.18;
Rework cavium support in preparation for MULTIPROCESSOR support

Switch to MIPS64R2

Let the compiler/assembler know we compiling for octeon.

Initial import of Cavium Octeon and Octeon Plus SoC and
specifically Ubiquiti Networks EdgeRouter LITE support.
Currently the ethernet and uart are worked.
This support was contributed by Internet Initiative Japan Inc.