Move the at-shutdown call to resettodr() from cpu_reboot() to kern_reboot().

It's a small step, but it's a step.

Remove unnecessary <sys/malloc.h>.

use kcpuset_isset() and pass second (NULL) argument to mips_fixup_exceptions()
to fix build for GENERIC(64).MP kernel configs.

Cleanup and clarify the ELFSIZE mess:

We now have 2 variables automatically set in elf_machdep.h:

ARCH_ELFSIZE: the size for userland binaries
KERN_ELFSIZE: the size for the kernel binaries

DB_ELFSIZE has been deleted and KERN_ELFSIZE should have always the
same values DB_ELFSIZE used to have.

In sys/exec_elf.h, if ELFSIZE is not set, it is set to KERN_ELFSIZE
for the kernel and ARCH_ELFSIZE for userland. These defaults should
eliminate the need for most manual ELFSIZE setting.

switch all ports to use uvm_init.c:uvm_md_init()

uvm_setpagesize() is now subsumed within this funciton.

branches: 1.53.6; 1.53.10;
- fix unused
- use cpu_{g,s}etmodel

branches: 1.52.2; 1.52.4;
Fix -fno-common fallout.

Remove declartions of physmem

branches: 1.50.2;
cleanup machine includes

Merge from matt-nb5-mips64.
Add pci support.
new interrupt code.
Adapt to new world order for MIPS

Cast to intptr_t before changing size of type.

branches: 1.47.2; 1.47.4; 1.47.6;
Remove separate mb_map. The nmbclusters is computed at boot time based
on the amount of physical memory and limited by NMBCLUSTERS if present.
Architectures without direct mapping also limit it based on the kmem_map
size, which is used as backing store. On i386 and ARM, the maximum KVA
used for mbuf clusters is limited to 64MB by default.

The old default limits and limits based on GATEWAY have been removed.
key_registered_sb_max is hard-wired to a value derived from 2048
clusters.

branches: 1.46.2;
Remove unneeded variables.

- Use uvm_lwp_setuarea() instead of directly setting address to lwp_t::l_addr.
- Replace most remaining uses of l_addr with uvm_lwp_getuarea() or lwp_getpcb().
- Amend assembly in ports where it accesses PCB via struct user.
- Rename L_ADDR to L_PCB in few places. Reduce sys/user.h inclusions.

Kill proc0paddr. Use lwp0.l_addr instead.

bzero -> memset

Use "defopt MODULAR" in sys/conf/files, and #include "opt_modular.h"
in all kernel sources that use the MODULAR option.
Proposed in tech-kern on 18 Jan 2009.

branches: 1.41.4;
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@.

It is not appropriate to call pmf_system_shutdown(9) from
doshutdownhooks(9): shutdown hooks registered by shutdownhook_establish(9)
expect to be called with interrupts disabled, but shutdown hooks
registered with pmf_device_register1(9) expect to be called with
interrupts enabled. So I have made two changes:

1 Do not call pmf_system_shutdown() from doshutdownhooks(). Instead,
change every call to doshutdownhooks() to a call to doshutdownhooks()
followed by a call to pmf_system_shutdown(). No functional change
is intended by this change.

2 Make i386 re-enable interrupts briefly while it calls
pmf_system_shutdown(). I leave it to others either to fix the
other ports, or to factor out some MI shutdown code, as joerg@
suggests, and fix that. Note that a functional change *is* intended
by this change.

I hope that this patch will stop us from flip-flopping between
calling doshutdownhooks() and pmf_system_shutdown() sometimes with
and sometimes without interrupts enabled.

branches: 1.38.2; 1.38.4; 1.38.10;
Replce exec_map with a pool. Proposed on tech-kern@, reviewed by chs@.

branches: 1.37.16; 1.37.20; 1.37.22; 1.37.24;
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: 1.36.10;
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: 1.35.2; 1.35.4; 1.35.10;
Fix some caddr_t rototill fallout.

semimechanically convert 'void foo' -> 'void *foo', as part of the continuing
caddr_t fallout.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

TRUE -> true, FALSE -> false

branches: 1.31.2;
Merge newlock2 to head.

branches: 1.30.2;
Use PRIx64 instead of llx

Remove declarations for cpu_model[] since it's in <sys/systm.h>.

branches: 1.28.4; 1.28.6; 1.28.8; 1.28.10; 1.28.12;
merge ktrace-lwp.

branches: 1.27.2;
Move the MI printing of `copyright' to the MD cpu_startup() code
where the printing of `version' is already performed.
This has the benefit of allowing the copyright to be available
via dmesg(8) on platforms which need the `msgbuf' to be setup
in cpu_startup() before printed output is remembered.

Use LL suffix on >32bit constants.

branches: 1.25.4;
Copy Izumi Tsutsui's total/avail memory message tidy up.
sgimips is a little different, that is left as is.

Uppercase CPU, plural is CPUs.

Replace the traditional buffer memory management -- based on fixed per buffer
virtual memory reservation and a private pool of memory pages -- by a scheme
based on memory pools.

This allows better utilization of memory because buffers can now be allocated
with a granularity finer than the system's native page size (useful for
filesystems with e.g. 1k or 2k fragment sizes). It also avoids fragmentation
of virtual to physical memory mappings (due to the former fixed virtual
address reservation) resulting in better utilization of MMU resources on some
platforms. Finally, the scheme is more flexible by allowing run-time decisions
on the amount of memory to be used for buffers.

On the other hand, the effectiveness of the LRU queue for buffer recycling
may be somewhat reduced compared to the traditional method since, due to the
nature of the pool based memory allocation, the actual least recently used
buffer may release its memory to a pool different from the one needed by a
newly allocated buffer. However, this effect will kick in only if the
system is under memory pressure.

Cast through (void *) to appease gcc3.
XXX1 - why does this "type-punned pointer" warning only affect little-
endian MIPS and not big-endian MIPS?!
XXX2 - too much duplicated code.

__KERNEL_RCSID()

Hardwire physmem to 32MB if not called from CFE.
This should be a kernel config option, but for now is enough to get
a sbmips GENERIC kernel running under a simulator.

branches: 1.19.2;
Call ksyms_init() instead of ddb_init() in case of
NKSYMS || defined(DDB) || defined(LKM)

Use PAGE_SIZE rather than NBPG.

Update to consistently use Broadcom GPL-compatible license on all SiByte code.

Merge the nathanw_sa branch.

s/bcopy/memcpy/

Fix the end-of-kernel calculation when we don't have a valid bootinfo
structure. From Chris Demetriou.

support passing in kernel symbols from a boot loader. GC some bogus
boot option handling.

GC IKOS kernel option (never complete in these sources anyway)

update to latest CFE API code

Don't include <sys/map.h>.

Make nbuf, nswbuf, and bufpages unsigned. Make all operations on these
variables unsigned, and update places where their values are printed.

branches: 1.8.2;
Merge cpu_sysctl() for all mips ports, based on powerpc and m68k precedent.

For now, only pmax implements CPU_BOOTED_KERNEL. Need to revisit.

branches: 1.7.2;
For some reason I'm not sure of yet, cfe_exit(warmstart, ...) isn't
working any more. Just do a cold restart so at least we get back to
CFE for now...

Remove some unused debug cruft.
Only print out the registers passed to us from CFE #ifdef DEBUG.

Remove the unneeded early memsize/physmem calculations.
KNF, ANSIfy.

branches: 1.4.4;
Include <machine/swarm.h>.

Don't use a magic number.

Fix up some white-space bogons.

A basic port to the Broadcom/SiByte SB1250 evaluation board (the
"swarm"). Other SB-cpu boards will be supported by this port in
the future.

Includes support for on-chip ethernet and serial. Many features
still missing - notably SMP, PCI/LDT and IDE.

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

Remove unnecessary <sys/malloc.h>.

use kcpuset_isset() and pass second (NULL) argument to mips_fixup_exceptions()
to fix build for GENERIC(64).MP kernel configs.

Cleanup and clarify the ELFSIZE mess:

We now have 2 variables automatically set in elf_machdep.h:

ARCH_ELFSIZE: the size for userland binaries
KERN_ELFSIZE: the size for the kernel binaries

DB_ELFSIZE has been deleted and KERN_ELFSIZE should have always the
same values DB_ELFSIZE used to have.

In sys/exec_elf.h, if ELFSIZE is not set, it is set to KERN_ELFSIZE
for the kernel and ARCH_ELFSIZE for userland. These defaults should
eliminate the need for most manual ELFSIZE setting.

switch all ports to use uvm_init.c:uvm_md_init()

uvm_setpagesize() is now subsumed within this funciton.

branches: 1.53.6; 1.53.10;
- fix unused
- use cpu_{g,s}etmodel

branches: 1.52.2; 1.52.4;
Fix -fno-common fallout.

Remove declartions of physmem

branches: 1.50.2;
cleanup machine includes

Merge from matt-nb5-mips64.
Add pci support.
new interrupt code.
Adapt to new world order for MIPS

Cast to intptr_t before changing size of type.

branches: 1.47.2; 1.47.4; 1.47.6;
Remove separate mb_map. The nmbclusters is computed at boot time based
on the amount of physical memory and limited by NMBCLUSTERS if present.
Architectures without direct mapping also limit it based on the kmem_map
size, which is used as backing store. On i386 and ARM, the maximum KVA
used for mbuf clusters is limited to 64MB by default.

The old default limits and limits based on GATEWAY have been removed.
key_registered_sb_max is hard-wired to a value derived from 2048
clusters.

branches: 1.46.2;
Remove unneeded variables.

- Use uvm_lwp_setuarea() instead of directly setting address to lwp_t::l_addr.
- Replace most remaining uses of l_addr with uvm_lwp_getuarea() or lwp_getpcb().
- Amend assembly in ports where it accesses PCB via struct user.
- Rename L_ADDR to L_PCB in few places. Reduce sys/user.h inclusions.

Kill proc0paddr. Use lwp0.l_addr instead.

bzero -> memset

Use "defopt MODULAR" in sys/conf/files, and #include "opt_modular.h"
in all kernel sources that use the MODULAR option.
Proposed in tech-kern on 18 Jan 2009.

branches: 1.41.4;
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@.

It is not appropriate to call pmf_system_shutdown(9) from
doshutdownhooks(9): shutdown hooks registered by shutdownhook_establish(9)
expect to be called with interrupts disabled, but shutdown hooks
registered with pmf_device_register1(9) expect to be called with
interrupts enabled. So I have made two changes:

1 Do not call pmf_system_shutdown() from doshutdownhooks(). Instead,
change every call to doshutdownhooks() to a call to doshutdownhooks()
followed by a call to pmf_system_shutdown(). No functional change
is intended by this change.

2 Make i386 re-enable interrupts briefly while it calls
pmf_system_shutdown(). I leave it to others either to fix the
other ports, or to factor out some MI shutdown code, as joerg@
suggests, and fix that. Note that a functional change *is* intended
by this change.

I hope that this patch will stop us from flip-flopping between
calling doshutdownhooks() and pmf_system_shutdown() sometimes with
and sometimes without interrupts enabled.

branches: 1.38.2; 1.38.4; 1.38.10;
Replce exec_map with a pool. Proposed on tech-kern@, reviewed by chs@.

branches: 1.37.16; 1.37.20; 1.37.22; 1.37.24;
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: 1.36.10;
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: 1.35.2; 1.35.4; 1.35.10;
Fix some caddr_t rototill fallout.

semimechanically convert 'void foo' -> 'void *foo', as part of the continuing
caddr_t fallout.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

TRUE -> true, FALSE -> false

branches: 1.31.2;
Merge newlock2 to head.

branches: 1.30.2;
Use PRIx64 instead of llx

Remove declarations for cpu_model[] since it's in <sys/systm.h>.

branches: 1.28.4; 1.28.6; 1.28.8; 1.28.10; 1.28.12;
merge ktrace-lwp.

branches: 1.27.2;
Move the MI printing of `copyright' to the MD cpu_startup() code
where the printing of `version' is already performed.
This has the benefit of allowing the copyright to be available
via dmesg(8) on platforms which need the `msgbuf' to be setup
in cpu_startup() before printed output is remembered.

Use LL suffix on >32bit constants.

branches: 1.25.4;
Copy Izumi Tsutsui's total/avail memory message tidy up.
sgimips is a little different, that is left as is.

Uppercase CPU, plural is CPUs.

Replace the traditional buffer memory management -- based on fixed per buffer
virtual memory reservation and a private pool of memory pages -- by a scheme
based on memory pools.

This allows better utilization of memory because buffers can now be allocated
with a granularity finer than the system's native page size (useful for
filesystems with e.g. 1k or 2k fragment sizes). It also avoids fragmentation
of virtual to physical memory mappings (due to the former fixed virtual
address reservation) resulting in better utilization of MMU resources on some
platforms. Finally, the scheme is more flexible by allowing run-time decisions
on the amount of memory to be used for buffers.

On the other hand, the effectiveness of the LRU queue for buffer recycling
may be somewhat reduced compared to the traditional method since, due to the
nature of the pool based memory allocation, the actual least recently used
buffer may release its memory to a pool different from the one needed by a
newly allocated buffer. However, this effect will kick in only if the
system is under memory pressure.

Cast through (void *) to appease gcc3.
XXX1 - why does this "type-punned pointer" warning only affect little-
endian MIPS and not big-endian MIPS?!
XXX2 - too much duplicated code.

__KERNEL_RCSID()

Hardwire physmem to 32MB if not called from CFE.
This should be a kernel config option, but for now is enough to get
a sbmips GENERIC kernel running under a simulator.

branches: 1.19.2;
Call ksyms_init() instead of ddb_init() in case of
NKSYMS || defined(DDB) || defined(LKM)

Use PAGE_SIZE rather than NBPG.

Update to consistently use Broadcom GPL-compatible license on all SiByte code.

Merge the nathanw_sa branch.

s/bcopy/memcpy/

Fix the end-of-kernel calculation when we don't have a valid bootinfo
structure. From Chris Demetriou.

support passing in kernel symbols from a boot loader. GC some bogus
boot option handling.

GC IKOS kernel option (never complete in these sources anyway)

update to latest CFE API code

Don't include <sys/map.h>.

Make nbuf, nswbuf, and bufpages unsigned. Make all operations on these
variables unsigned, and update places where their values are printed.

branches: 1.8.2;
Merge cpu_sysctl() for all mips ports, based on powerpc and m68k precedent.

For now, only pmax implements CPU_BOOTED_KERNEL. Need to revisit.

branches: 1.7.2;
For some reason I'm not sure of yet, cfe_exit(warmstart, ...) isn't
working any more. Just do a cold restart so at least we get back to
CFE for now...

Remove some unused debug cruft.
Only print out the registers passed to us from CFE #ifdef DEBUG.

Remove the unneeded early memsize/physmem calculations.
KNF, ANSIfy.

branches: 1.4.4;
Include <machine/swarm.h>.

Don't use a magic number.

Fix up some white-space bogons.

A basic port to the Broadcom/SiByte SB1250 evaluation board (the
"swarm"). Other SB-cpu boards will be supported by this port in
the future.

Includes support for on-chip ethernet and serial. Many features
still missing - notably SMP, PCI/LDT and IDE.

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

use kcpuset_isset() and pass second (NULL) argument to mips_fixup_exceptions()
to fix build for GENERIC(64).MP kernel configs.

Cleanup and clarify the ELFSIZE mess:

We now have 2 variables automatically set in elf_machdep.h:

ARCH_ELFSIZE: the size for userland binaries
KERN_ELFSIZE: the size for the kernel binaries

DB_ELFSIZE has been deleted and KERN_ELFSIZE should have always the
same values DB_ELFSIZE used to have.

In sys/exec_elf.h, if ELFSIZE is not set, it is set to KERN_ELFSIZE
for the kernel and ARCH_ELFSIZE for userland. These defaults should
eliminate the need for most manual ELFSIZE setting.

switch all ports to use uvm_init.c:uvm_md_init()

uvm_setpagesize() is now subsumed within this funciton.

branches: 1.53.6; 1.53.10;
- fix unused
- use cpu_{g,s}etmodel

branches: 1.52.2; 1.52.4;
Fix -fno-common fallout.

Remove declartions of physmem

branches: 1.50.2;
cleanup machine includes

Merge from matt-nb5-mips64.
Add pci support.
new interrupt code.
Adapt to new world order for MIPS

Cast to intptr_t before changing size of type.

branches: 1.47.2; 1.47.4; 1.47.6;
Remove separate mb_map. The nmbclusters is computed at boot time based
on the amount of physical memory and limited by NMBCLUSTERS if present.
Architectures without direct mapping also limit it based on the kmem_map
size, which is used as backing store. On i386 and ARM, the maximum KVA
used for mbuf clusters is limited to 64MB by default.

The old default limits and limits based on GATEWAY have been removed.
key_registered_sb_max is hard-wired to a value derived from 2048
clusters.

branches: 1.46.2;
Remove unneeded variables.

- Use uvm_lwp_setuarea() instead of directly setting address to lwp_t::l_addr.
- Replace most remaining uses of l_addr with uvm_lwp_getuarea() or lwp_getpcb().
- Amend assembly in ports where it accesses PCB via struct user.
- Rename L_ADDR to L_PCB in few places. Reduce sys/user.h inclusions.

Kill proc0paddr. Use lwp0.l_addr instead.

bzero -> memset

Use "defopt MODULAR" in sys/conf/files, and #include "opt_modular.h"
in all kernel sources that use the MODULAR option.
Proposed in tech-kern on 18 Jan 2009.

branches: 1.41.4;
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@.

It is not appropriate to call pmf_system_shutdown(9) from
doshutdownhooks(9): shutdown hooks registered by shutdownhook_establish(9)
expect to be called with interrupts disabled, but shutdown hooks
registered with pmf_device_register1(9) expect to be called with
interrupts enabled. So I have made two changes:

1 Do not call pmf_system_shutdown() from doshutdownhooks(). Instead,
change every call to doshutdownhooks() to a call to doshutdownhooks()
followed by a call to pmf_system_shutdown(). No functional change
is intended by this change.

2 Make i386 re-enable interrupts briefly while it calls
pmf_system_shutdown(). I leave it to others either to fix the
other ports, or to factor out some MI shutdown code, as joerg@
suggests, and fix that. Note that a functional change *is* intended
by this change.

I hope that this patch will stop us from flip-flopping between
calling doshutdownhooks() and pmf_system_shutdown() sometimes with
and sometimes without interrupts enabled.

branches: 1.38.2; 1.38.4; 1.38.10;
Replce exec_map with a pool. Proposed on tech-kern@, reviewed by chs@.

branches: 1.37.16; 1.37.20; 1.37.22; 1.37.24;
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: 1.36.10;
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: 1.35.2; 1.35.4; 1.35.10;
Fix some caddr_t rototill fallout.

semimechanically convert 'void foo' -> 'void *foo', as part of the continuing
caddr_t fallout.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

TRUE -> true, FALSE -> false

branches: 1.31.2;
Merge newlock2 to head.

branches: 1.30.2;
Use PRIx64 instead of llx

Remove declarations for cpu_model[] since it's in <sys/systm.h>.

branches: 1.28.4; 1.28.6; 1.28.8; 1.28.10; 1.28.12;
merge ktrace-lwp.

branches: 1.27.2;
Move the MI printing of `copyright' to the MD cpu_startup() code
where the printing of `version' is already performed.
This has the benefit of allowing the copyright to be available
via dmesg(8) on platforms which need the `msgbuf' to be setup
in cpu_startup() before printed output is remembered.

Use LL suffix on >32bit constants.

branches: 1.25.4;
Copy Izumi Tsutsui's total/avail memory message tidy up.
sgimips is a little different, that is left as is.

Uppercase CPU, plural is CPUs.

Replace the traditional buffer memory management -- based on fixed per buffer
virtual memory reservation and a private pool of memory pages -- by a scheme
based on memory pools.

This allows better utilization of memory because buffers can now be allocated
with a granularity finer than the system's native page size (useful for
filesystems with e.g. 1k or 2k fragment sizes). It also avoids fragmentation
of virtual to physical memory mappings (due to the former fixed virtual
address reservation) resulting in better utilization of MMU resources on some
platforms. Finally, the scheme is more flexible by allowing run-time decisions
on the amount of memory to be used for buffers.

On the other hand, the effectiveness of the LRU queue for buffer recycling
may be somewhat reduced compared to the traditional method since, due to the
nature of the pool based memory allocation, the actual least recently used
buffer may release its memory to a pool different from the one needed by a
newly allocated buffer. However, this effect will kick in only if the
system is under memory pressure.

Cast through (void *) to appease gcc3.
XXX1 - why does this "type-punned pointer" warning only affect little-
endian MIPS and not big-endian MIPS?!
XXX2 - too much duplicated code.

__KERNEL_RCSID()

Hardwire physmem to 32MB if not called from CFE.
This should be a kernel config option, but for now is enough to get
a sbmips GENERIC kernel running under a simulator.

branches: 1.19.2;
Call ksyms_init() instead of ddb_init() in case of
NKSYMS || defined(DDB) || defined(LKM)

Use PAGE_SIZE rather than NBPG.

Update to consistently use Broadcom GPL-compatible license on all SiByte code.

Merge the nathanw_sa branch.

s/bcopy/memcpy/

Fix the end-of-kernel calculation when we don't have a valid bootinfo
structure. From Chris Demetriou.

support passing in kernel symbols from a boot loader. GC some bogus
boot option handling.

GC IKOS kernel option (never complete in these sources anyway)

update to latest CFE API code

Don't include <sys/map.h>.

Make nbuf, nswbuf, and bufpages unsigned. Make all operations on these
variables unsigned, and update places where their values are printed.

branches: 1.8.2;
Merge cpu_sysctl() for all mips ports, based on powerpc and m68k precedent.

For now, only pmax implements CPU_BOOTED_KERNEL. Need to revisit.

branches: 1.7.2;
For some reason I'm not sure of yet, cfe_exit(warmstart, ...) isn't
working any more. Just do a cold restart so at least we get back to
CFE for now...

Remove some unused debug cruft.
Only print out the registers passed to us from CFE #ifdef DEBUG.

Remove the unneeded early memsize/physmem calculations.
KNF, ANSIfy.

branches: 1.4.4;
Include <machine/swarm.h>.

Don't use a magic number.

Fix up some white-space bogons.

A basic port to the Broadcom/SiByte SB1250 evaluation board (the
"swarm"). Other SB-cpu boards will be supported by this port in
the future.

Includes support for on-chip ethernet and serial. Many features
still missing - notably SMP, PCI/LDT and IDE.

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

Cleanup and clarify the ELFSIZE mess:

We now have 2 variables automatically set in elf_machdep.h:

ARCH_ELFSIZE: the size for userland binaries
KERN_ELFSIZE: the size for the kernel binaries

DB_ELFSIZE has been deleted and KERN_ELFSIZE should have always the
same values DB_ELFSIZE used to have.

In sys/exec_elf.h, if ELFSIZE is not set, it is set to KERN_ELFSIZE
for the kernel and ARCH_ELFSIZE for userland. These defaults should
eliminate the need for most manual ELFSIZE setting.

switch all ports to use uvm_init.c:uvm_md_init()

uvm_setpagesize() is now subsumed within this funciton.

branches: 1.53.6; 1.53.10;
- fix unused
- use cpu_{g,s}etmodel

branches: 1.52.2; 1.52.4;
Fix -fno-common fallout.

Remove declartions of physmem

branches: 1.50.2;
cleanup machine includes

Merge from matt-nb5-mips64.
Add pci support.
new interrupt code.
Adapt to new world order for MIPS

Cast to intptr_t before changing size of type.

branches: 1.47.2; 1.47.4; 1.47.6;
Remove separate mb_map. The nmbclusters is computed at boot time based
on the amount of physical memory and limited by NMBCLUSTERS if present.
Architectures without direct mapping also limit it based on the kmem_map
size, which is used as backing store. On i386 and ARM, the maximum KVA
used for mbuf clusters is limited to 64MB by default.

The old default limits and limits based on GATEWAY have been removed.
key_registered_sb_max is hard-wired to a value derived from 2048
clusters.

branches: 1.46.2;
Remove unneeded variables.

- Use uvm_lwp_setuarea() instead of directly setting address to lwp_t::l_addr.
- Replace most remaining uses of l_addr with uvm_lwp_getuarea() or lwp_getpcb().
- Amend assembly in ports where it accesses PCB via struct user.
- Rename L_ADDR to L_PCB in few places. Reduce sys/user.h inclusions.

Kill proc0paddr. Use lwp0.l_addr instead.

bzero -> memset

Use "defopt MODULAR" in sys/conf/files, and #include "opt_modular.h"
in all kernel sources that use the MODULAR option.
Proposed in tech-kern on 18 Jan 2009.

branches: 1.41.4;
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@.

It is not appropriate to call pmf_system_shutdown(9) from
doshutdownhooks(9): shutdown hooks registered by shutdownhook_establish(9)
expect to be called with interrupts disabled, but shutdown hooks
registered with pmf_device_register1(9) expect to be called with
interrupts enabled. So I have made two changes:

1 Do not call pmf_system_shutdown() from doshutdownhooks(). Instead,
change every call to doshutdownhooks() to a call to doshutdownhooks()
followed by a call to pmf_system_shutdown(). No functional change
is intended by this change.

2 Make i386 re-enable interrupts briefly while it calls
pmf_system_shutdown(). I leave it to others either to fix the
other ports, or to factor out some MI shutdown code, as joerg@
suggests, and fix that. Note that a functional change *is* intended
by this change.

I hope that this patch will stop us from flip-flopping between
calling doshutdownhooks() and pmf_system_shutdown() sometimes with
and sometimes without interrupts enabled.

branches: 1.38.2; 1.38.4; 1.38.10;
Replce exec_map with a pool. Proposed on tech-kern@, reviewed by chs@.

branches: 1.37.16; 1.37.20; 1.37.22; 1.37.24;
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: 1.36.10;
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: 1.35.2; 1.35.4; 1.35.10;
Fix some caddr_t rototill fallout.

semimechanically convert 'void foo' -> 'void *foo', as part of the continuing
caddr_t fallout.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

TRUE -> true, FALSE -> false

branches: 1.31.2;
Merge newlock2 to head.

branches: 1.30.2;
Use PRIx64 instead of llx

Remove declarations for cpu_model[] since it's in <sys/systm.h>.

branches: 1.28.4; 1.28.6; 1.28.8; 1.28.10; 1.28.12;
merge ktrace-lwp.

branches: 1.27.2;
Move the MI printing of `copyright' to the MD cpu_startup() code
where the printing of `version' is already performed.
This has the benefit of allowing the copyright to be available
via dmesg(8) on platforms which need the `msgbuf' to be setup
in cpu_startup() before printed output is remembered.

Use LL suffix on >32bit constants.

branches: 1.25.4;
Copy Izumi Tsutsui's total/avail memory message tidy up.
sgimips is a little different, that is left as is.

Uppercase CPU, plural is CPUs.

Replace the traditional buffer memory management -- based on fixed per buffer
virtual memory reservation and a private pool of memory pages -- by a scheme
based on memory pools.

This allows better utilization of memory because buffers can now be allocated
with a granularity finer than the system's native page size (useful for
filesystems with e.g. 1k or 2k fragment sizes). It also avoids fragmentation
of virtual to physical memory mappings (due to the former fixed virtual
address reservation) resulting in better utilization of MMU resources on some
platforms. Finally, the scheme is more flexible by allowing run-time decisions
on the amount of memory to be used for buffers.

On the other hand, the effectiveness of the LRU queue for buffer recycling
may be somewhat reduced compared to the traditional method since, due to the
nature of the pool based memory allocation, the actual least recently used
buffer may release its memory to a pool different from the one needed by a
newly allocated buffer. However, this effect will kick in only if the
system is under memory pressure.

Cast through (void *) to appease gcc3.
XXX1 - why does this "type-punned pointer" warning only affect little-
endian MIPS and not big-endian MIPS?!
XXX2 - too much duplicated code.

__KERNEL_RCSID()

Hardwire physmem to 32MB if not called from CFE.
This should be a kernel config option, but for now is enough to get
a sbmips GENERIC kernel running under a simulator.

branches: 1.19.2;
Call ksyms_init() instead of ddb_init() in case of
NKSYMS || defined(DDB) || defined(LKM)

Use PAGE_SIZE rather than NBPG.

Update to consistently use Broadcom GPL-compatible license on all SiByte code.

Merge the nathanw_sa branch.

s/bcopy/memcpy/

Fix the end-of-kernel calculation when we don't have a valid bootinfo
structure. From Chris Demetriou.

support passing in kernel symbols from a boot loader. GC some bogus
boot option handling.

GC IKOS kernel option (never complete in these sources anyway)

update to latest CFE API code

Don't include <sys/map.h>.

Make nbuf, nswbuf, and bufpages unsigned. Make all operations on these
variables unsigned, and update places where their values are printed.

branches: 1.8.2;
Merge cpu_sysctl() for all mips ports, based on powerpc and m68k precedent.

For now, only pmax implements CPU_BOOTED_KERNEL. Need to revisit.

branches: 1.7.2;
For some reason I'm not sure of yet, cfe_exit(warmstart, ...) isn't
working any more. Just do a cold restart so at least we get back to
CFE for now...

Remove some unused debug cruft.
Only print out the registers passed to us from CFE #ifdef DEBUG.

Remove the unneeded early memsize/physmem calculations.
KNF, ANSIfy.

branches: 1.4.4;
Include <machine/swarm.h>.

Don't use a magic number.

Fix up some white-space bogons.

A basic port to the Broadcom/SiByte SB1250 evaluation board (the
"swarm"). Other SB-cpu boards will be supported by this port in
the future.

Includes support for on-chip ethernet and serial. Many features
still missing - notably SMP, PCI/LDT and IDE.

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

switch all ports to use uvm_init.c:uvm_md_init()

uvm_setpagesize() is now subsumed within this funciton.

- fix unused
- use cpu_{g,s}etmodel

branches: 1.52.2; 1.52.4;
Fix -fno-common fallout.

Remove declartions of physmem

branches: 1.50.2;
cleanup machine includes

Merge from matt-nb5-mips64.
Add pci support.
new interrupt code.
Adapt to new world order for MIPS

Cast to intptr_t before changing size of type.

branches: 1.47.2; 1.47.4; 1.47.6;
Remove separate mb_map. The nmbclusters is computed at boot time based
on the amount of physical memory and limited by NMBCLUSTERS if present.
Architectures without direct mapping also limit it based on the kmem_map
size, which is used as backing store. On i386 and ARM, the maximum KVA
used for mbuf clusters is limited to 64MB by default.

The old default limits and limits based on GATEWAY have been removed.
key_registered_sb_max is hard-wired to a value derived from 2048
clusters.

branches: 1.46.2;
Remove unneeded variables.

- Use uvm_lwp_setuarea() instead of directly setting address to lwp_t::l_addr.
- Replace most remaining uses of l_addr with uvm_lwp_getuarea() or lwp_getpcb().
- Amend assembly in ports where it accesses PCB via struct user.
- Rename L_ADDR to L_PCB in few places. Reduce sys/user.h inclusions.

Kill proc0paddr. Use lwp0.l_addr instead.

bzero -> memset

Use "defopt MODULAR" in sys/conf/files, and #include "opt_modular.h"
in all kernel sources that use the MODULAR option.
Proposed in tech-kern on 18 Jan 2009.

branches: 1.41.4;
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@.

It is not appropriate to call pmf_system_shutdown(9) from
doshutdownhooks(9): shutdown hooks registered by shutdownhook_establish(9)
expect to be called with interrupts disabled, but shutdown hooks
registered with pmf_device_register1(9) expect to be called with
interrupts enabled. So I have made two changes:

1 Do not call pmf_system_shutdown() from doshutdownhooks(). Instead,
change every call to doshutdownhooks() to a call to doshutdownhooks()
followed by a call to pmf_system_shutdown(). No functional change
is intended by this change.

2 Make i386 re-enable interrupts briefly while it calls
pmf_system_shutdown(). I leave it to others either to fix the
other ports, or to factor out some MI shutdown code, as joerg@
suggests, and fix that. Note that a functional change *is* intended
by this change.

I hope that this patch will stop us from flip-flopping between
calling doshutdownhooks() and pmf_system_shutdown() sometimes with
and sometimes without interrupts enabled.

branches: 1.38.2; 1.38.4; 1.38.10;
Replce exec_map with a pool. Proposed on tech-kern@, reviewed by chs@.

branches: 1.37.16; 1.37.20; 1.37.22; 1.37.24;
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: 1.36.10;
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: 1.35.2; 1.35.4; 1.35.10;
Fix some caddr_t rototill fallout.

semimechanically convert 'void foo' -> 'void *foo', as part of the continuing
caddr_t fallout.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

TRUE -> true, FALSE -> false

branches: 1.31.2;
Merge newlock2 to head.

branches: 1.30.2;
Use PRIx64 instead of llx

Remove declarations for cpu_model[] since it's in <sys/systm.h>.

branches: 1.28.4; 1.28.6; 1.28.8; 1.28.10; 1.28.12;
merge ktrace-lwp.

branches: 1.27.2;
Move the MI printing of `copyright' to the MD cpu_startup() code
where the printing of `version' is already performed.
This has the benefit of allowing the copyright to be available
via dmesg(8) on platforms which need the `msgbuf' to be setup
in cpu_startup() before printed output is remembered.

Use LL suffix on >32bit constants.

branches: 1.25.4;
Copy Izumi Tsutsui's total/avail memory message tidy up.
sgimips is a little different, that is left as is.

Uppercase CPU, plural is CPUs.

Replace the traditional buffer memory management -- based on fixed per buffer
virtual memory reservation and a private pool of memory pages -- by a scheme
based on memory pools.

This allows better utilization of memory because buffers can now be allocated
with a granularity finer than the system's native page size (useful for
filesystems with e.g. 1k or 2k fragment sizes). It also avoids fragmentation
of virtual to physical memory mappings (due to the former fixed virtual
address reservation) resulting in better utilization of MMU resources on some
platforms. Finally, the scheme is more flexible by allowing run-time decisions
on the amount of memory to be used for buffers.

On the other hand, the effectiveness of the LRU queue for buffer recycling
may be somewhat reduced compared to the traditional method since, due to the
nature of the pool based memory allocation, the actual least recently used
buffer may release its memory to a pool different from the one needed by a
newly allocated buffer. However, this effect will kick in only if the
system is under memory pressure.

Cast through (void *) to appease gcc3.
XXX1 - why does this "type-punned pointer" warning only affect little-
endian MIPS and not big-endian MIPS?!
XXX2 - too much duplicated code.

__KERNEL_RCSID()

Hardwire physmem to 32MB if not called from CFE.
This should be a kernel config option, but for now is enough to get
a sbmips GENERIC kernel running under a simulator.

branches: 1.19.2;
Call ksyms_init() instead of ddb_init() in case of
NKSYMS || defined(DDB) || defined(LKM)

Use PAGE_SIZE rather than NBPG.

Update to consistently use Broadcom GPL-compatible license on all SiByte code.

Merge the nathanw_sa branch.

s/bcopy/memcpy/

Fix the end-of-kernel calculation when we don't have a valid bootinfo
structure. From Chris Demetriou.

support passing in kernel symbols from a boot loader. GC some bogus
boot option handling.

GC IKOS kernel option (never complete in these sources anyway)

update to latest CFE API code

Don't include <sys/map.h>.

Make nbuf, nswbuf, and bufpages unsigned. Make all operations on these
variables unsigned, and update places where their values are printed.

branches: 1.8.2;
Merge cpu_sysctl() for all mips ports, based on powerpc and m68k precedent.

For now, only pmax implements CPU_BOOTED_KERNEL. Need to revisit.

branches: 1.7.2;
For some reason I'm not sure of yet, cfe_exit(warmstart, ...) isn't
working any more. Just do a cold restart so at least we get back to
CFE for now...

Remove some unused debug cruft.
Only print out the registers passed to us from CFE #ifdef DEBUG.

Remove the unneeded early memsize/physmem calculations.
KNF, ANSIfy.

branches: 1.4.4;
Include <machine/swarm.h>.

Don't use a magic number.

Fix up some white-space bogons.

A basic port to the Broadcom/SiByte SB1250 evaluation board (the
"swarm"). Other SB-cpu boards will be supported by this port in
the future.

Includes support for on-chip ethernet and serial. Many features
still missing - notably SMP, PCI/LDT and IDE.

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