MFC r283547:

Ensure that all arm kernel configs contain ALT_BREAK_TO_DEBUGGER and not
BREAK_TO_DEBUGGER if they have a serial console (most do). A burst of
serial line noise (such as unplugging a usb serial adapter) can look like
a break and drop a working system into the debugger. The alt break sequence
(<CR>~^B) works fine on both serial and non-serial consoles.

MFC r279837:

Remove MODULES_OVERRIDE="" and WITHOUT_MODULES="ahc" from armv6 configs.

MFC r276003:

Start to clean up the armv6 kernel configs by reducing the diff between
them in the first sections and the later FDT support.

MFC r276642, r276644:

Remove commented-out options SMP and APIC_IO from old arm boards that will
never be able to support smp.

Switch all arm kernels with option SMP to use SCHED_ULE instead of 4BSD.

MFC r266647, r270912, r273089:

Reduce the diff between the PandaBoard and BeableBone kernel configs

Resync comments about scbus and pass for life after AHCI joined CAM.

Uncomment general options from the Pandaboard config. These are in other
configs and there is no reason for them not to be here.

MFC r268633, r271046:

Fixes and enhancements for the if_cgem driver...

- miibus fixes as suggested by Yonghyeon Pyun.
- enable VLAN MTU support.
- fix a few WITNESS complaints in cgem_attach().
- have cgem_attach() properly init the ifnet struct before calling
mii_attach() to fix panic when using e1000phy.
- fix ethernet address changing.
- fix transmit queue overflow handling.
- tweak receive queue handling to reduce receive overflows.
- bring out MAC statistic counters to sysctls.
- add e1000phy to config file.
- implement receive hang work-around described in reference guide.
- change device name from if_cgem to cgem to be consistent with other
interfaces.

Fix the Zedboard/Zynq ethernet driver to handle media speed changes so
that it can connect to switches at speeds other than 1gb.

MFC r263749,267146:

>r267146 | imp | 2014-06-05 22:08:55 -0600 (Thu, 05 Jun 2014) | 4 lines
>Restore comments accidentally removed.

>r263749 | imp | 2014-03-25 16:08:31 -0600 (Tue, 25 Mar 2014) | 18 lines
>Rather than require a makeoptions DEBUG to get debug correct,
>add it in kern.mk, but only if we're using clang. While this
>option is supported by both clang and gcc, in the future there
>may be changes to clang which change the defaults that require
>a tweak to build our kernel such that other tools in our tree
>will work. Set a good example by forcing -gdwarf-2 only for
>clang builds, and only if the user hasn't specified another
>dwarf level already. Update UPDATING to reflect the changed
>state of affairs. This also keeps us from having to update
>all the ARM kernels to add this, and also keeps us from
>in the future having to update all the MIPS kernels and is
>one less place the user will have to know to do something
>special for clang and one less thing developers will need
>to do when moving an architecture to clang.

MFC 265099, 265148, 265690:

Add SMP support for Zedboard.

Use edge-triggered interrupts rather than polling loops to avoid missing
transitions of the INIT_B line. Also, release the mutex during uiomove().

Convert the Zynq SoC support to the new routines for static device mapping.

MFC 263301

In kernel config files, it is supposed to be 'options<space><tab>' not
'options<tab><tab>', per long standing (but recently not so strictly
enforced) convention.

MFC 263245: Make all the comments '# ' and align to same column.

MFC 257774, 256760, 262916, 262905, 262918, 262919, 262920, 262921, 262924,
262925, 262929, 262932, 262935, 262940, 262941, 262942, 262948, 262949,
262950

Strip arm/conf/DEFAULTS down to just items that are mandatory for running
the architecture.

Move all the files named foo/common.c to foo/foo_common.c

Initial cut for DTS on the hl201 board.

Add commented out dts for sam9260ek as well as early printf support.

Make clock optional on uart nodes, then back it out ("I don't know what I
was thinking, but it is lame.")

Set the baud rate if it isn't 0

Make at91_soc_id() public.

Properly round at91 resource on unmapping.

Move AT91 AIC related stuff to own file.

Fix another bug in multicast filtering. i.MX uses 6 bits from MSB in
LE CRC32 for the hash value, not the lowest 6 bits in BE CRC32.

Follow r262916 with one more config file that references a renamed common.c

Remove bogus AT91 define that causes compile errors. Most of the defines
for SAM9X are going away soonish anyway (once FDT works), but until
then...

Remove all dregs of a per-thread undefined-exception-mode stack.

Rework the VFP code that handles demand-based save and restore of state.

Always call vfp_discard() on thread death.

When a thread begins life it doesn't own the VFP hardware state on any cpu.

Make undefined exception entry MP-safe.

MFC r261570, r261572

Revert r260440 (add USB_HOST_ALIGN to all configs, it's only needed for
platforms with a 64-byte cacheline size).

Add option USB_HOST_ALIGN=64 for all SoCs that have 64 byte cache lines.

MFC r260440, r260441, r260447, r260490, r260493

Add option USB_HOST_ALIGN to configs that contain 'device usb'.

Update dts files of Cubieboard1,2 to use 1GB memory.

Add a function to print the contents of the static device mapping table,

MFC r283547:

Ensure that all arm kernel configs contain ALT_BREAK_TO_DEBUGGER and not
BREAK_TO_DEBUGGER if they have a serial console (most do). A burst of
serial line noise (such as unplugging a usb serial adapter) can look like
a break and drop a working system into the debugger. The alt break sequence
(<CR>~^B) works fine on both serial and non-serial consoles.

MFC r279837:

Remove MODULES_OVERRIDE="" and WITHOUT_MODULES="ahc" from armv6 configs.

MFC r276003:

Start to clean up the armv6 kernel configs by reducing the diff between
them in the first sections and the later FDT support.

MFC r276642, r276644:

Remove commented-out options SMP and APIC_IO from old arm boards that will
never be able to support smp.

Switch all arm kernels with option SMP to use SCHED_ULE instead of 4BSD.

MFC r266647, r270912, r273089:

Reduce the diff between the PandaBoard and BeableBone kernel configs

Resync comments about scbus and pass for life after AHCI joined CAM.

Uncomment general options from the Pandaboard config. These are in other
configs and there is no reason for them not to be here.

MFC r268633, r271046:

Fixes and enhancements for the if_cgem driver...

- miibus fixes as suggested by Yonghyeon Pyun.
- enable VLAN MTU support.
- fix a few WITNESS complaints in cgem_attach().
- have cgem_attach() properly init the ifnet struct before calling
mii_attach() to fix panic when using e1000phy.
- fix ethernet address changing.
- fix transmit queue overflow handling.
- tweak receive queue handling to reduce receive overflows.
- bring out MAC statistic counters to sysctls.
- add e1000phy to config file.
- implement receive hang work-around described in reference guide.
- change device name from if_cgem to cgem to be consistent with other
interfaces.

Fix the Zedboard/Zynq ethernet driver to handle media speed changes so
that it can connect to switches at speeds other than 1gb.

MFC r263749,267146:

>r267146 | imp | 2014-06-05 22:08:55 -0600 (Thu, 05 Jun 2014) | 4 lines
>Restore comments accidentally removed.

>r263749 | imp | 2014-03-25 16:08:31 -0600 (Tue, 25 Mar 2014) | 18 lines
>Rather than require a makeoptions DEBUG to get debug correct,
>add it in kern.mk, but only if we're using clang. While this
>option is supported by both clang and gcc, in the future there
>may be changes to clang which change the defaults that require
>a tweak to build our kernel such that other tools in our tree
>will work. Set a good example by forcing -gdwarf-2 only for
>clang builds, and only if the user hasn't specified another
>dwarf level already. Update UPDATING to reflect the changed
>state of affairs. This also keeps us from having to update
>all the ARM kernels to add this, and also keeps us from
>in the future having to update all the MIPS kernels and is
>one less place the user will have to know to do something
>special for clang and one less thing developers will need
>to do when moving an architecture to clang.

MFC 265099, 265148, 265690:

Add SMP support for Zedboard.

Use edge-triggered interrupts rather than polling loops to avoid missing
transitions of the INIT_B line. Also, release the mutex during uiomove().

Convert the Zynq SoC support to the new routines for static device mapping.

MFC 263301

In kernel config files, it is supposed to be 'options<space><tab>' not
'options<tab><tab>', per long standing (but recently not so strictly
enforced) convention.

MFC 263245: Make all the comments '# ' and align to same column.

MFC 257774, 256760, 262916, 262905, 262918, 262919, 262920, 262921, 262924,
262925, 262929, 262932, 262935, 262940, 262941, 262942, 262948, 262949,
262950

Strip arm/conf/DEFAULTS down to just items that are mandatory for running
the architecture.

Move all the files named foo/common.c to foo/foo_common.c

Initial cut for DTS on the hl201 board.

Add commented out dts for sam9260ek as well as early printf support.

Make clock optional on uart nodes, then back it out ("I don't know what I
was thinking, but it is lame.")

Set the baud rate if it isn't 0

Make at91_soc_id() public.

Properly round at91 resource on unmapping.

Move AT91 AIC related stuff to own file.

Fix another bug in multicast filtering. i.MX uses 6 bits from MSB in
LE CRC32 for the hash value, not the lowest 6 bits in BE CRC32.

Follow r262916 with one more config file that references a renamed common.c

Remove bogus AT91 define that causes compile errors. Most of the defines
for SAM9X are going away soonish anyway (once FDT works), but until
then...

Remove all dregs of a per-thread undefined-exception-mode stack.

Rework the VFP code that handles demand-based save and restore of state.

Always call vfp_discard() on thread death.

When a thread begins life it doesn't own the VFP hardware state on any cpu.

Make undefined exception entry MP-safe.

MFC r261570, r261572

Revert r260440 (add USB_HOST_ALIGN to all configs, it's only needed for
platforms with a 64-byte cacheline size).

Add option USB_HOST_ALIGN=64 for all SoCs that have 64 byte cache lines.

MFC r260440, r260441, r260447, r260490, r260493

Add option USB_HOST_ALIGN to configs that contain 'device usb'.

Update dts files of Cubieboard1,2 to use 1GB memory.

Add a function to print the contents of the static device mapping table,