branches: 1.1.2; 1.1.14;
* Move some generic ARM OpenFirmware stuff into arch/arm/ofw (still
more can move, but not yet).
* Garbage-collect some cruft from arch/arm32 in preparation for
renaming to arch/shark.

branches: 1.1.2; 1.1.14;
* Move some generic ARM OpenFirmware stuff into arch/arm/ofw (still
more can move, but not yet).
* Garbage-collect some cruft from arch/arm32 in preparation for
renaming to arch/shark.

Adjust egister usage so that r4 and r5 are preserved as cur{cpu,lwp}
respectively as required by the change to make ASTs operate per-LWP
rather than per-CPU. DO_AST_AND_RESTORE_ALIGNMENT_FAULTS expects this.

Remove the call to dosoftints while I'm here as it's dont in DO_AST...

XXX untested

Trailing whitespace

branches: 1.15.42;
Don't use cpsr_all/spsr_all with mrs, it doesn't take a mask.

Move parts of cpu.h that are not needed by MI code in <arm/locore.h>
Don't include <machine/cpu.h> or <machine/frame.h>, use <arm/locore.h>
Use <arm/asm.h> instead of <machine/arm.h>

branches: 1.13.2; 1.13.4;
Avoid using r7 (which is being reserved for a different purpose).

branches: 1.12.8;
Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch
from uvmexp to per-cpu cpu_data and move them to 64bits. Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.

branches: 1.11.22;
Merge kernel changes in matt-armv6 to HEAD.

branches: 1.10.6; 1.10.8; 1.10.10;
Truly kill current_intr_depth once and for all.

branches: 1.9.2; 1.9.8;
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: 1.8.2;
Remove all references to spl_mask. Now it isn't used by any sources.
Discussed on port-arm.

branches: 1.7.2; 1.7.8; 1.7.10; 1.7.14; 1.7.16; 1.7.18; 1.7.20;
Rewrite the ARM mutex implementation to be of the simple-mutex variety.
Because pre-v6 ARM lacks support for an atomic compare-and-swap, we
implement _lock_cas() as a restartable atomic squence that is checked
in the IRQ handler right before AST processing. (This is safe because,
for all practical purposes, there are no SMP pre-v6 ARM systems.)

This can serve as a model for other non-MP platforms that lack the
necessary atomic operations for mutexes (SuperH, for example).

Upshots of this change:
- kmutex_t is now down to 8 bytes on ARM; about as good as we can get.
- ARM2 systems don't have to trap and emulate SWP or SWPB for mutexes.

The acorn26 port is not updated by this commit to do the LOCK_CAS_CHECK.
That is left as an exercise for the port maintainer.

Reviewed and tested by Matt Thomas.

Clean the bitrotting ofw code. Don't export export the underlying irq
dispatch mechanism to the rest of the kernel; they don't need to know.
Nuke IRQSTATS entirely.

XXX ofwgencfg_clock needs to taught about timecounters

branches: 1.5.4;
- Document COMPAT_15 as doing nothing
- Add COMPAT_15 to all the kernel that had COMPAT_14, for the sake of coherency
- Remove the only occurences of #ifdef COMPAT_15 in the tree: for the ARM
ports, COMPAT_15 was always used in conjunction with EXEC_AOUT. Only EXEC_AOUT
matters here.

This address kern/18407

branches: 1.4.20; 1.4.22;
merge ktrace-lwp.

branches: 1.3.16;
Enable/Restore alignment fault state on interrupt handler entry/exit.

branches: 1.2.8;
Continue the " - . - 8" purge. Specifically:

add rd, pc, #foo - . - 8 -> adr rd, foo
ldr rd, [pc, #foo - . - 8] -> ldr rd, foo

Also, when saving the return address for a function pointer call, use
"mov lr, pc" just before the call unless the return address is somewhere
other than just after the call site.

Finally, a few obvious little micro-optimisations like using LDR directly
rather than ADR followed by LDR, and loading directly into PC rather than
bouncing via R0.

branches: 1.1.2; 1.1.14;
* Move some generic ARM OpenFirmware stuff into arch/arm/ofw (still
more can move, but not yet).
* Garbage-collect some cruft from arch/arm32 in preparation for
renaming to arch/shark.

malloc(9) -> kmem(9)

branches: 1.22.8;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

branches: 1.21.20;
fix leak.

branches: 1.20.2;
intrcnt and _intrnames are unused.

branches: 1.19.10;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.18.8; 1.18.18;
Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch
from uvmexp to per-cpu cpu_data and move them to 64bits. Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.

branches: 1.17.4;
Ansify function definitions w/o arguments. Generated with sed.

ANSIfy functions with function-pointer arguments

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

Remove all the __P() from sys (excluding sys/dist)
Diff checked with grep and MK1 eyeball.
i386 and amd64 GENERIC and sys still build.

branches: 1.13.10; 1.13.18; 1.13.24;
Truly kill current_intr_depth once and for all.

branches: 1.12.2; 1.12.8;
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: 1.11.2;
Remove all references to spl_mask. Now it isn't used by any sources.
Discussed on port-arm.

branches: 1.10.2; 1.10.10; 1.10.14; 1.10.16; 1.10.18; 1.10.20;
Clean the bitrotting ofw code. Don't export export the underlying irq
dispatch mechanism to the rest of the kernel; they don't need to know.
Nuke IRQSTATS entirely.

XXX ofwgencfg_clock needs to taught about timecounters

Don't do softinit_init from irq_init.

Don't export spl_smasks or soft_interrupts. They are local to intr.c
Make sure that softintr_init() is called when needed.
Assume __HAVE_GENERIC_SOFT_INTERRUPTS is defined (since newlock2 requires it).

Call softintr_init()

branches: 1.6.14;
remove irqblock[] as no one uses it. reviewed by Ben Harris.

branches: 1.5.4; 1.5.6; 1.5.8; 1.5.10; 1.5.12;
merge ktrace-lwp.

branches: 1.4.12;
Add a local prototype for a called-from-asm function.

__KERNEL_RCSID()

branches: 1.2.8;
remove trailing \n in panic(). approved perry.

branches: 1.1.2; 1.1.14;
* Move some generic ARM OpenFirmware stuff into arch/arm/ofw (still
more can move, but not yet).
* Garbage-collect some cruft from arch/arm32 in preparation for
renaming to arch/shark.

Ansify function definitions w/o arguments. Generated with sed.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.8.10; 1.8.18; 1.8.24;
Convert evbarm to timecounter. Only one of the systems was tested, the
rest of the patch is compile-time tested only.

branches: 1.7.16; 1.7.20; 1.7.22; 1.7.28; 1.7.34;
Clean the bitrotting ofw code. Don't export export the underlying irq
dispatch mechanism to the rest of the kernel; they don't need to know.
Nuke IRQSTATS entirely.

XXX ofwgencfg_clock needs to taught about timecounters

branches: 1.6.26;
merge ktrace-lwp.

branches: 1.5.12;
Make this compile again.

__KERNEL_RCSID()

branches: 1.3.8;
remove trailing \n in panic(). approved perry.

branches: 1.2.6;
Fix off-by-one error in delay().

branches: 1.1.2;
* Move some generic ARM OpenFirmware stuff into arch/arm/ofw (still
more can move, but not yet).
* Garbage-collect some cruft from arch/arm32 in preparation for
renaming to arch/shark.

Consistently use vaddr_t as initarm and friends return type.

Makes no difference to binaries except for aarch64 where it's required

branches: 1.19.38;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.18.2; 1.18.12;
Some more device_t, cfdata_t, CFATTACH_DECL_NEW cleanup.

branches: 1.17.4; 1.17.10;
Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

Remove all the __P() from sys (excluding sys/dist)
Diff checked with grep and MK1 eyeball.
i386 and amd64 GENERIC and sys still build.

branches: 1.15.4;
As discussed on tech-kern: mutex_init is too heavyweight for early bootstrap
phases, so move the initialization of the ksyms mutex back into main via
a function called ksyms_init. Rename the existing (but quite different)
ksyms_init* variations into ksyms_addsyms_elf() and ksyms_addsyms_explicit()
and adapt machdep code accordingly.

Remove LKMs and switch to the module framework, pass 1.

Proposed on tech-kern@.

branches: 1.13.2;
Remove non-__ELF__ snippets.

branches: 1.12.6; 1.12.10; 1.12.12; 1.12.16;
Remove arm support for IPKDB.

It hasn't worked since arm was broken out from arm32 in Jan 2001, and
no-one has noticed or cared to fix it.

branches: 1.11.16; 1.11.20; 1.11.22; 1.11.28; 1.11.34;
Clean the bitrotting ofw code. Don't export export the underlying irq
dispatch mechanism to the rest of the kernel; they don't need to know.
Nuke IRQSTATS entirely.

XXX ofwgencfg_clock needs to taught about timecounters

branches: 1.10.4;
Change the type of initarm() on OFW-based ARM systems to match other non-hpcarm
ports. This seems sensible since all of them call it from the same locore.S.
This makes NetBSD/shark GENERIC compile.

parse_mi_bootargs() is declared in <arm/arm32/machdep.h>, so there's no need
to declare it here too.

branches: 1.8.20; 1.8.22;
merge ktrace-lwp.

branches: 1.7.16;
__KERNEL_RCSID()

branches: 1.6.2;
Call ksyms_init() instead of ddb_init() in case of
NKSYMS || defined(DDB) || defined(LKM)

Use PAGE_SIZE rather than NBPG.

Use CFATTACH_DECL().

Declare all cfattach structures const.

branches: 1.2.6;
Clean up handling of the vector page on 32-bit ARM systems:
* Don't refer to VA 0, instead refer to a new variable: vector_page
* Delete the old zero_page_*() functions, replacing them with a new
one: vector_page_setprot().
* When manipulating vector page mappings in user pmaps, only do so if
the vector page is below KERNEL_BASE (if it's above KERNEL_BASE, the
vector page is mapped by the kernel pmap).
* Add a new function, arm32_vector_init(), which takes the virtual
address of the vector page (which MUST be valid when the function
is called) and a bitmask of vectors the kernel is going to take
over, and performs all vector page initialization, including setting
the V bit in the CPU Control register ("relocate vectors to high
address"), if necessary.

branches: 1.1.2;
* Move some generic ARM OpenFirmware stuff into arch/arm/ofw (still
more can move, but not yet).
* Garbage-collect some cruft from arch/arm32 in preparation for
renaming to arch/shark.

Rename argument "bootspec" to avoid shadowing a global

branches: 1.10.60;
Use a typedef to cleanup OF_set_callback.

branches: 1.9.2; 1.9.6;
Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

Ansify function definitions w/o arguments. Generated with sed.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.6.46; 1.6.54; 1.6.60;
add OF_setprop()

branches: 1.5.26;
merge ktrace-lwp.

branches: 1.4.2;
Appease -Wcast-qual

__KERNEL_RCSID()

branches: 1.2.8;
add missing protos.

branches: 1.1.2; 1.1.14;
* Move some generic ARM OpenFirmware stuff into arch/arm/ofw (still
more can move, but not yet).
* Garbage-collect some cruft from arch/arm32 in preparation for
renaming to arch/shark.