Commit Graph

1091 Commits

Author SHA1 Message Date
Greg Ungerer 0b2a213905 m68knommu: make 527x CPU reset register addressing consistent
If we make all MCF_RCR (CPU reset register) addressing consistent across all
ColdFire CPU family members that use it then we will be able to remove the
duplicated copies of the code that use it.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 10:42:26 +10:00
Greg Ungerer 320de7d01c m68knommu: make 523x CPU reset register addressing consistent
If we make all MCF_RCR (CPU reset register) addressing consistent across all
ColdFire CPU family members that use it then we will be able to remove the
duplicated copies of the code that use it.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 10:42:25 +10:00
Greg Ungerer d894b89bf7 m68knommu: factor some common ColdFire cpu reset code
A number of the early ColdFire cores use the same code to reset the CPU.
Currently that is duplicated in each of the sub-arch files. Pull out this
common code and use a single copy of it for all CPU types that use it.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 10:41:48 +10:00
Greg Ungerer 440f6ffc06 m68knommu: move old ColdFire timers init from CPU init to timers code
The original ColdFire timer interrupt setup is used by most of the users
of the original ColdFire timer code. But the code is currently duplicated
in each of the ColdFire CPU specific init files. Move it to the timers
code that it is really part of. It is strait forward to make it conditional
on also having the original interrupt engine that it needs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:10 +10:00
Greg Ungerer c05793c733 m68knommu: clean up init code in ColdFire 532x startup
We can move all the init calls in the initcall code into the more general
arch setup code (which is config_BSP() here). That makes the 532x consistent
with other ColdFire CPUs setup code. It means we can get rid of the initcall
setup here all together. Also make sure we set the arch mach_reset function
pointer to get the local arch reset code called on reset.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:10 +10:00
Greg Ungerer 9773be5f5f m68knommu: clean up init code in ColdFire 528x startup
We can move all the init calls in the initcall code into the more general
arch setup code (which is config_BSP() here). That makes the 528x consistent
with other ColdFire CPUs setup cod. It means we can get rif of the initcall
setup here all together.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:09 +10:00
Greg Ungerer 2ba168a913 m68knommu: clean up init code in ColdFire 523x startup
We can move the QSPI init call to the more general config_BSP() code on
the 523x platorm setup code. Then we can remove the initcall code all
together.

We can also remove the un-needed include of mcfuart.h while we are
cleaning up here too.

Also I noticed that we are not calling the fec_init() code here, and we
should be doing that. Put that back in too.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:09 +10:00
Greg Ungerer fa1fc24662 m68knommu: merge common ColdFire QSPI platform setup code
The ColdFire QSPI is common to quite a few ColdFire CPUs. No need to duplicate
its platform setup code for every CPU family member that has it. Merge all the
setup code into a single shared file.

This also results in few platforms no longer needing any local platform
setup code. In those cases remove the empty devices array and initcall
code as well.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:09 +10:00
Greg Ungerer ed8a2798f6 m68knommu: make 532x QSPI platform addressing consistent
If we make all QSPI (SPI protocol) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and code and use a single setup for all.

So modify the ColdFire 532x QSPI addressing so that:

. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used
. move chip select definitions (CS) to appropriate header

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:09 +10:00
Greg Ungerer 3b2039b266 m68knommu: make 528x QSPI platform addressing consistent
If we make all QSPI (SPI protocol) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and code and use a single setup for all.

So modify the ColdFire 528x QSPI addressing so that:

. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used
. move chip select definitions (CS) to appropriate header

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:09 +10:00
Greg Ungerer 6c84a60eb9 m68knommu: make 527x QSPI platform addressing consistent
If we make all QSPI (SPI protocol) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and code and use a single setup for all.

So modify the ColdFire 527x QSPI addressing so that:

. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used
. move chip select definitions (CS) to appropriate header

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:09 +10:00
Greg Ungerer 2424f54902 m68knommu: make 5249 QSPI platform addressing consistent
If we make all QSPI (SPI protocol) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and code and use a single setup for all.

So modify the ColdFire 5249 QSPI addressing so that:

. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used
. move chip select definitions (CS) to appropriate header

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:09 +10:00
Greg Ungerer 36d175a4b2 m68knommu: make 523x QSPI platform addressing consistent
If we make all QSPI (SPI protocol) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and code and use a single setup for all.

So modify the ColdFire 523x QSPI addressing so that:

. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used
. move chip select definitions (CS) to appropriate header

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:09 +10:00
Greg Ungerer a4e2e2ac08 m68knommu: make 520x QSPI platform addressing consistent
If we make all QSPI (SPI protocol) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and code and use a single setup for all.

So modify the ColdFire 520x QSPI addressing so that:

. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used
. move chip select definitions (CS) to appropriate header

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:09 +10:00
Greg Ungerer b7ce7f0d0e m68knommu: merge common ColdFire FEC platform setup code
The ColdFire FEC is common to quite a few ColdFire CPUs. No need to duplicate
its platform setup code for every CPU family member that has it. Merge all the
setup code into a single shared file.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:08 +10:00
Greg Ungerer 504695479e m68knommu: make 532x FEC platform addressing consistent
If we make all FEC (ethernet) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and use a single setup for all.

So modify the ColdFire 532x FEC addressing so that:

. FECs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:08 +10:00
Greg Ungerer 4f8f9fb8cb m68knommu: make 528x FEC platform addressing consistent
If we make all FEC (ethernet) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and use a single setup for all.

So modify the ColdFire 528x FEC addressing so that:

. FECs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:08 +10:00
Greg Ungerer 308bfc12dd m68knommu: make 527x FEC platform addressing consistent
If we make all FEC (ethernet) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and use a single setup for all.

So modify the ColdFire 527x FEC addressing so that:

. FECs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:08 +10:00
Greg Ungerer 9a11b493ed m68knommu: make 5272 FEC platform addressing consistent
If we make all FEC (ethernet) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and use a single setup for all.

So modify the ColdFire 5272 FEC addressing so that:

. FECs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:08 +10:00
Greg Ungerer 21634593b4 m68knommu: make 523x FEC platform addressing consistent
If we make all FEC (ethernet) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and use a single setup for all.

So modify the ColdFire 523x FEC addressing so that:

. FECs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:08 +10:00
Greg Ungerer d4e08372e3 m68knommu: make 520x FEC platform addressing consistent
If we make all FEC (ethernet) addressing consistent across all ColdFire
family members then we will be able to remove the duplicated plaform data
and use a single setup for all.

So modify the ColdFire 520x FEC addressing so that:

. FECs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:08 +10:00
Greg Ungerer 55148f6f88 m68knommu: merge common ColdFire UART IRQ setup
Some ColdFire CPU UART hardware modules can configure the IRQ they use.
Currently the same setup code is duplicated in the init code for each of
these ColdFire CPUs. Merge all this code to a single instance.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:08 +10:00
Greg Ungerer 0d2fe94647 m68knommu: merge common ColdFire UART platform setup code
The ColdFire UART is common to all ColdFire CPU's. No need to duplicate
its platform setup code for every CPU family member. Merge all the setup
code into a single shared file.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:08 +10:00
Greg Ungerer b9a0c3f88e m68knommu: simplify the 54xx UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:07 +10:00
Greg Ungerer b77fb7faa9 m68knommu: simplify the 5407 UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:07 +10:00
Greg Ungerer a75bc61952 m68knommu: simplify the 532x UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:07 +10:00
Greg Ungerer 7bdebba492 m68knommu: simplify the 5307 UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:07 +10:00
Greg Ungerer cae82a836d m68knommu: simplify the 528x UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:07 +10:00
Greg Ungerer 1eb1391638 m68knommu: simplify the 527x UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:07 +10:00
Greg Ungerer 6b656e8a74 m68knommu: simplify the 5272 UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:07 +10:00
Greg Ungerer 43d94b7f92 m68knommu: simplify the 5249 UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:06 +10:00
Greg Ungerer b92225c716 m68knommu: simplify the 520x UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:06 +10:00
Greg Ungerer a579748dc1 m68knommu: simplify the 5206 UART setup code
Simplify the UART setup code so that it no longer loops for each UART
present. Just make it do all the work it needs in a single function.
This will make the code easier to share when we move to a single set
of platform data for ColdFire UARTs.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:06 +10:00
Greg Ungerer bbbeeaf2f7 m68knommu: make 54xx UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 54xx UART addressing so that:

. UARTs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:06 +10:00
Greg Ungerer 69d23b610a m68knommu: make 5407 UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 5407 UART addressing so that:

. UARTs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:06 +10:00
Greg Ungerer 35b7cf22c6 m68knommu: make 532x UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 532x UART addressing so that:

. UARTs are numbered from 0 up
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:06 +10:00
Greg Ungerer f8bb5327a8 m68knommu: make 528x UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 528x UART addressing so that:

. UARTs are numbered from 0 up
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:06 +10:00
Greg Ungerer 909159feb3 m68knommu: make 5307 UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 5307 UART addressing so that:

. UARTs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:06 +10:00
Greg Ungerer 20e681fdfa m68knommu: make 527x UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 527x UART addressing so that:

. UARTs are numbered from 0 up
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:06 +10:00
Greg Ungerer 023e0555a9 m68knommu: make 5272 UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 5272 UART addressing so that:

. UARTs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:05 +10:00
Greg Ungerer e8f69e545e m68knommu: make 5249 UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 5249 UART addressing so that:

. UARTs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:05 +10:00
Greg Ungerer 13682af349 m68knommu: make 523x UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 523x UART addressing so that:

. UARTs are numbered from 0 up
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:05 +10:00
Greg Ungerer ffc203bc19 m68knommu: make 520x UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 520x UART addressing so that:

. UARTs are numbered from 0 up
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:05 +10:00
Greg Ungerer 8400ca322e m68knommu: make 5206 UART platform addressing consistent
If we make all UART addressing consistent across all ColdFire family members
then we will be able to remove the duplicated plaform data and use a single
setup for all.

So modify the ColdFire 5206 UART addressing so that:

. UARTs are numbered from 0 up
. base addresses are absolute (not relative to MBAR peripheral register)
. use a common name for IRQs used

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:05 +10:00
Greg Ungerer fde3944141 m68k: merge the MMU and non-MMU versions of process.c
The MMU and non-MMU varients of the m68k arch process.c code are pretty
much the same. Only a few minor details differ between the two. The
majority of the difference is to deal with having or wanting hardware FPU
support. So merge them back into a single process.c file.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2012-03-05 09:43:05 +10:00
Greg Ungerer 9657a87205 m68k: make support for FPU hardware configurable
The classic m68k code has always supported an FPU (although it may have
been a software emulated one). The non-MMU m68k code has never supported FPU
hardware. To help in merging common code create a configation setting that
signifies if we are builing in FPU support or not.

This switch, CONFIG_FPU, is set as per the current use cases. So it is
always enabled if CONFIG_MMU is set, and disabled otherwise. With a little
extra code it will be possible to disable it on the classic m68k platforms
as well, and to enable it on non-MMU platforms that do have hardware FPU.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2012-03-05 09:43:05 +10:00
Greg Ungerer 43dec91f4d m68k: merge the mmu and non-mmu versions of ptrace.c
Most of the code in the non-mmu ptrace_no.c file is the same as the mmu
version ptrace_mm.c. So merge them back into a single file.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2012-03-05 09:43:04 +10:00
Greg Ungerer 397ac99c6c m68k: remove dead timer code
The set_rtc_mmss() function is defined "static inline" but is never used
in this file. Remove it.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2012-03-05 09:43:04 +10:00
Greg Ungerer fa7f9e7fad m68k: merge mmu and non-mmu versions of time.c
There is only trivial differences between the mmu time_mm.c and non-mmu
time_no.c files. Merge them back into a single time.c.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2012-03-05 09:43:04 +10:00
Greg Ungerer b6c58e8af0 m68knommu: remove unused CONFIG_GENERIC_CMOS_UPDATE option
The CONFIG_GENERIC_CMOS_UPDATE switch is always enabled for the non-MMU
m68k case. But the underlying code to support it, update_persistent_clock(),
doesn't end up doing anything on the currently supported non-MMU platforms.
No platforms supply the necessary function support for writing back the RTC.

So lets remove this option and support code. This also brings m68knommu
in line with the m68k, which doesn't enabled this switch either.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:04 +10:00
Greg Ungerer 35aefb2645 m68knommu: modify timer init code to make it consistent with m68k code
With a few small changes we can make the m68knommu timer init code the
same as the m68k code. By using the mach_sched_init function pointer
and reworking the current timer initializers to keep track of the common
m68k timer_interrupt() handler we end up with almost identical code for
m68knommu.

This will allow us to more easily merge the mmu and non-mmu m68k time.c
in future patches.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:04 +10:00
Greg Ungerer 9517746131 m68knommu: make persistent clock code consistent with m68k
The read_persistent_clock() code is different on m68knommu, for really no
reason. With a few changes to support function names and some code
re-organization the code can be made the same.

This will make it easier to merge the arch/m68k/kernel/time.c for m68k and
m68knommu in a future patch.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:03 +10:00
Greg Ungerer d3f033f894 m68knommu: remove reduntant definitions of _ramvec
The base of the real RAM resident hardware vectors, _ramvec, is declared in
our asm/traps.h. No need to have local declarations spread around in other
files that use this. So remove them.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:03 +10:00
Greg Ungerer f84f52a5c1 m68knommu: clean up linker script
There is a lot of years of collected cruft in the m68knommu linker script.
Clean it all up and use the well defined linker script support macros.

Support is maintained for building both ROM/FLASH based and RAM based setups.
No major changes to section layouts, though the rodata section is now lumped
in with the read/write data section.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:03 +10:00
Greg Ungerer 10cb54de2c m68knommu: hard set the ColdFire MBAR register on startup
The ColdFire MBAR register that holds the mapping of the peripheral region
on some ColdFire CPUs is configurable. It can be configured at some address
different to that of the bootloader that loaded the kernel. So hard set
the MBAR register mapping at kernel startup time.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-03-05 09:43:03 +10:00
Thomas Gleixner bd2f55361f sched/rt: Use schedule_preempt_disabled()
Coccinelle based conversion.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-24swm5zut3h9c4a6s46x8rws@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2012-03-01 10:28:03 +01:00
David S. Miller ff4783ce78 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/sfc/rx.c

Overlapping changes in drivers/net/ethernet/sfc/rx.c, one to change
the rx_buf->is_page boolean into a set of u16 flags, and another to
adjust how ->ip_summed is initialized.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-26 21:55:51 -05:00
Ben Greear 3bdc0eba0b net: Add framework to allow sending packets with customized CRC.
This is useful for testing RX handling of frames with bad
CRCs.

Requires driver support to actually put the packet on the
wire properly.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-24 01:37:35 -08:00
Pavel Emelyanov ef64a54f6e sock: Introduce the SO_PEEK_OFF sock option
This one specifies where to start MSG_PEEK-ing queue data from. When
set to negative value means that MSG_PEEK works as ususally -- peeks
from the head of the queue always.

When some bytes are peeked from queue and the peeking offset is non
negative it is moved forward so that the next peek will return next
portion of data.

When non-peeking recvmsg occurs and the peeking offset is non negative
is is moved backward so that the next peek will still peek the proper
data (i.e. the one that would have been picked if there were no non
peeking recv in between).

The offset is set using per-proto opteration to let the protocol handle
the locking issues and to check whether the peeking offset feature is
supported by the protocol the socket belongs to.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-21 15:03:48 -05:00
H. Peter Anvin 08a655ca7f m68k: Use generic posix_types.h
Change the m68k architecture to use <asm-generic/posix_types.h>.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link: http://lkml.kernel.org/r/1328677745-20121-12-git-send-email-hpa@zytor.com
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
2012-02-14 12:01:29 -08:00
Alexander Stein 3372f5a7d0 m68k: Do not set global share for non-kernel shared pages
If the SG bit is set in MMUTR the page is accessible for all
userspace processes (ignoring the ASID). So a process might randomly
access a page from a different process which had a shared page
(from shared memory) in its context.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-02-07 11:25:57 +10:00
Alexander Stein 57e00098cc m68k: Add shared bit to Coldfire kernel page entries
We had problems accessing our NOR flash trough mtd. The system always got
stuck at attaching UBI using ubiattach if booted from NFS or after mounting
squashfs as rootfs directly from NOR flash.
After some testing of the new changes introduced from v3.2-rc1 to v3.2-rc7
we had to apply the following patch to get mtd working again.

[gerg: The problem was ultimately caused by allocated kernel pages not having
the shared (SG) bit set. Without the SG bit set the MMU will look for page
matches incorporating the ASID as well. Things like module regions allocated
using vmalloc would fault when other processes run. ]

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-02-07 11:04:00 +10:00
Greg Ungerer 8b3262c00d m68knommu: fix syscall tracing stuck process
The return path from an exception was checking too many bits in the
thread_info->flags, and getting stuck calling do_signal(). There was
no work to do, we should only be checking the low 8 bits (as per comments
and definitions in arch/m68k/include/asm/thread_info.h).

This fixes the stuck process problem when using strace.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2012-02-07 11:03:53 +10:00
Linus Torvalds 0dbfe8ddaa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Fix assembler constraint to prevent overeager gcc optimisation
  mac_esp: rename irq
  mac_scsi: dont enable mac_scsi irq before requesting it
  macfb: fix black and white modes
  m68k/irq: Remove obsolete IRQ_FLG_* definitions

Fix up trivial conflict in arch/m68k/kernel/process_mm.c as per Geert.
2012-01-26 12:43:57 -08:00
Dmitry Torokhov 409e15442f Input: q40kbd - convert driver to the split model
Convert the driver to standard spilt model arch-specific code registers
platform device to which driver code can bind later.

Also request IRQ immediately upon binding to the device instead of doing
this when serio port is being opened.

Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2012-01-23 00:02:31 -08:00
Andreas Schwab 2a3535069e m68k: Fix assembler constraint to prevent overeager gcc optimisation
Passing the address of a variable as an operand to an asm statement
doesn't mark the value of this variable as used, so gcc may optimize its
initialisation away.  Fix this by using the "m" constraint instead.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org
2012-01-22 14:50:20 +01:00
Geert Uytterhoeven aa557875cc m68k/irq: Remove obsolete IRQ_FLG_* definitions
The m68k core irq code stopped honoring these flags during the irq
restructuring in 2006.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2012-01-22 14:50:02 +01:00
Joe Perches ff2d8b19a3 treewide: convert uses of ATTRIB_NORETURN to __noreturn
Use the more commonly used __noreturn instead of ATTRIB_NORETURN.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-12 20:13:03 -08:00
Joe Perches 9402c95f34 treewide: remove useless NORET_TYPE macro and uses
It's a very old and now unused prototype marking so just delete it.

Neaten panic pointer argument style to keep checkpatch quiet.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-12 20:13:03 -08:00
Ben Hutchings 9f13a1fd45 cpu: Register a generic CPU device on architectures that currently do not
frv, h8300, m68k, microblaze, openrisc, score, um and xtensa currently
do not register a CPU device.  Add the config option GENERIC_CPU_DEVICES
which causes a generic CPU device to be registered for each present CPU,
and make all these architectures select it.

Richard Weinberger <richard@nod.at> covered UML and suggested using
per_cpu.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-11 15:50:11 -08:00
Linus Torvalds e343a895a9 lib: use generic pci_iomap on all architectures
Many architectures don't want to pull in iomap.c,
 so they ended up duplicating pci_iomap from that file.
 That function isn't trivial, and we are going to modify it
 https://lkml.org/lkml/2011/11/14/183
 so the duplication hurts.
 
 This reduces the scope of the problem significantly,
 by moving pci_iomap to a separate file and
 referencing that from all architectures.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

lib: use generic pci_iomap on all architectures

Many architectures don't want to pull in iomap.c,
so they ended up duplicating pci_iomap from that file.
That function isn't trivial, and we are going to modify it
https://lkml.org/lkml/2011/11/14/183
so the duplication hurts.

This reduces the scope of the problem significantly,
by moving pci_iomap to a separate file and
referencing that from all architectures.

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  alpha: drop pci_iomap/pci_iounmap from pci-noop.c
  mn10300: switch to GENERIC_PCI_IOMAP
  mn10300: add missing __iomap markers
  frv: switch to GENERIC_PCI_IOMAP
  tile: switch to GENERIC_PCI_IOMAP
  tile: don't panic on iomap
  sparc: switch to GENERIC_PCI_IOMAP
  sh: switch to GENERIC_PCI_IOMAP
  powerpc: switch to GENERIC_PCI_IOMAP
  parisc: switch to GENERIC_PCI_IOMAP
  mips: switch to GENERIC_PCI_IOMAP
  microblaze: switch to GENERIC_PCI_IOMAP
  arm: switch to GENERIC_PCI_IOMAP
  alpha: switch to GENERIC_PCI_IOMAP
  lib: add GENERIC_PCI_IOMAP
  lib: move GENERIC_IOMAP to lib/Kconfig

Fix up trivial conflicts due to changes nearby in arch/{m68k,score}/Kconfig
2012-01-10 18:04:27 -08:00
Linus Torvalds eb59c505f8 Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
* 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits)
  PM / Hibernate: Implement compat_ioctl for /dev/snapshot
  PM / Freezer: fix return value of freezable_schedule_timeout_killable()
  PM / shmobile: Allow the A4R domain to be turned off at run time
  PM / input / touchscreen: Make st1232 use device PM QoS constraints
  PM / QoS: Introduce dev_pm_qos_add_ancestor_request()
  PM / shmobile: Remove the stay_on flag from SH7372's PM domains
  PM / shmobile: Don't include SH7372's INTCS in syscore suspend/resume
  PM / shmobile: Add support for the sh7372 A4S power domain / sleep mode
  PM: Drop generic_subsys_pm_ops
  PM / Sleep: Remove forward-only callbacks from AMBA bus type
  PM / Sleep: Remove forward-only callbacks from platform bus type
  PM: Run the driver callback directly if the subsystem one is not there
  PM / Sleep: Make pm_op() and pm_noirq_op() return callback pointers
  PM/Devfreq: Add Exynos4-bus device DVFS driver for Exynos4210/4212/4412.
  PM / Sleep: Merge internal functions in generic_ops.c
  PM / Sleep: Simplify generic system suspend callbacks
  PM / Hibernate: Remove deprecated hibernation snapshot ioctls
  PM / Sleep: Fix freezer failures due to racy usermodehelper_is_disabled()
  ARM: S3C64XX: Implement basic power domain support
  PM / shmobile: Use common always on power domain governor
  ...

Fix up trivial conflict in fs/xfs/xfs_buf.c due to removal of unused
XBT_FORCE_SLEEP bit
2012-01-08 13:10:57 -08:00
Linus Torvalds 972b2c7199 Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (165 commits)
  reiserfs: Properly display mount options in /proc/mounts
  vfs: prevent remount read-only if pending removes
  vfs: count unlinked inodes
  vfs: protect remounting superblock read-only
  vfs: keep list of mounts for each superblock
  vfs: switch ->show_options() to struct dentry *
  vfs: switch ->show_path() to struct dentry *
  vfs: switch ->show_devname() to struct dentry *
  vfs: switch ->show_stats to struct dentry *
  switch security_path_chmod() to struct path *
  vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
  vfs: trim includes a bit
  switch mnt_namespace ->root to struct mount
  vfs: take /proc/*/mounts and friends to fs/proc_namespace.c
  vfs: opencode mntget() mnt_set_mountpoint()
  vfs: spread struct mount - remaining argument of next_mnt()
  vfs: move fsnotify junk to struct mount
  vfs: move mnt_devname
  vfs: move mnt_list to struct mount
  vfs: switch pnode.h macros to struct mount *
  ...
2012-01-08 12:19:57 -08:00
Linus Torvalds 7affca3537 Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (73 commits)
  arm: fix up some samsung merge sysdev conversion problems
  firmware: Fix an oops on reading fw_priv->fw in sysfs loading file
  Drivers:hv: Fix a bug in vmbus_driver_unregister()
  driver core: remove __must_check from device_create_file
  debugfs: add missing #ifdef HAS_IOMEM
  arm: time.h: remove device.h #include
  driver-core: remove sysdev.h usage.
  clockevents: remove sysdev.h
  arm: convert sysdev_class to a regular subsystem
  arm: leds: convert sysdev_class to a regular subsystem
  kobject: remove kset_find_obj_hinted()
  m86k: gpio - convert sysdev_class to a regular subsystem
  mips: txx9_sram - convert sysdev_class to a regular subsystem
  mips: 7segled - convert sysdev_class to a regular subsystem
  sh: dma - convert sysdev_class to a regular subsystem
  sh: intc - convert sysdev_class to a regular subsystem
  power: suspend - convert sysdev_class to a regular subsystem
  power: qe_ic - convert sysdev_class to a regular subsystem
  power: cmm - convert sysdev_class to a regular subsystem
  s390: time - convert sysdev_class to a regular subsystem
  ...

Fix up conflicts with 'struct sysdev' removal from various platform
drivers that got changed:
 - arch/arm/mach-exynos/cpu.c
 - arch/arm/mach-exynos/irq-eint.c
 - arch/arm/mach-s3c64xx/common.c
 - arch/arm/mach-s3c64xx/cpu.c
 - arch/arm/mach-s5p64x0/cpu.c
 - arch/arm/mach-s5pv210/common.c
 - arch/arm/plat-samsung/include/plat/cpu.h
 - arch/powerpc/kernel/sysfs.c
and fix up cpu_is_hotpluggable() as per Greg in include/linux/cpu.h
2012-01-07 12:03:30 -08:00
Linus Torvalds 356b95424c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: (21 commits)
  m68k/mac: Make CONFIG_HEARTBEAT unavailable on Mac
  m68k/serial: Remove references to obsolete serial config options
  m68k/net: Remove obsolete IRQ_FLG_* users
  m68k: Don't comment out syscalls used by glibc
  m68k/atari: Move declaration of atari_SCC_reset_done to header file
  m68k/serial: Remove references to obsolete CONFIG_SERIAL167
  m68k/hp300: Export hp300_ledstate
  m68k: Initconst section fixes
  m68k/mac: cleanup macro case
  mac_scsi: fix mac_scsi on some powerbooks
  m68k/mac: fix powerbook 150 adb_type
  m68k/mac: fix baboon irq disable and shutdown
  m68k/mac: oss irq fixes
  m68k/mac: fix nubus slot irq disable and shutdown
  m68k/mac: enable via_alt_mapping on performa 580
  m68k/mac: cleanup forward declarations
  m68k/mac: cleanup mac_irq_pending
  m68k/mac: cleanup mac_clear_irq
  m68k/mac: early console
  m68k/mvme16x: Add support for EARLY_PRINTK
  ...

Fix up trivial conflict in arch/m68k/Kconfig.debug due to new
EARLY_PRINTK config option addition clashing with movement of the
BOOTPARAM options.
2012-01-06 18:28:12 -08:00
Linus Torvalds c77417132c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (56 commits)
  m68k: allow ColdFire 547x and 548x CPUs to be built with MMU enabled
  m68k/Kconfig: Separate classic m68k and coldfire early
  m68k: add ColdFire with MMU enabled support to the m68k mem init code
  m68k: do not use m68k startup or interrupt code for ColdFire CPUs
  m68k: add ColdFire FPU support for the V4e ColdFire CPUs
  m68k: adjustments to stack frame for ColdFire with MMU enabled
  m68k: use non-MMU linker script for ColdFire MMU builds
  m68k: ColdFire with MMU enabled uses same clocking code as non-MMU
  m68k: add code to setup a ColdFire 54xx platform when MMU enabled
  m68k: use non-MMU entry.S code when compiling for ColdFire CPU
  m68k: create ColdFire MMU pgalloc code
  m68k: compile appropriate mm arch files for ColdFire MMU support
  m68k: ColdFire V4e MMU paging init code and miss handler
  m68k: use ColdFire MMU read/write bit flags when ioremapping
  m68k: modify cache push and clear code for ColdFire with MMU enable
  m68k: use tracehook_report_syscall_entry/exit for ColdFire MMU ptrace path
  m68k: ColdFire V4e MMU context support code
  m68k: MMU enabled ColdFire needs 8k ELF alignment
  m68k: set ColdFire MMU page size
  m68k: define PAGE_OFFSET_RAW for ColdFire CPU with MMU enabled
  ...
2012-01-06 17:59:33 -08:00
Linus Torvalds 9753dfe19a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1958 commits)
  net: pack skb_shared_info more efficiently
  net_sched: red: split red_parms into parms and vars
  net_sched: sfq: extend limits
  cnic: Improve error recovery on bnx2x devices
  cnic: Re-init dev->stats_addr after chip reset
  net_sched: Bug in netem reordering
  bna: fix sparse warnings/errors
  bna: make ethtool_ops and strings const
  xgmac: cleanups
  net: make ethtool_ops const
  vmxnet3" make ethtool ops const
  xen-netback: make ops structs const
  virtio_net: Pass gfp flags when allocating rx buffers.
  ixgbe: FCoE: Add support for ndo_get_fcoe_hbainfo() call
  netdev: FCoE: Add new ndo_get_fcoe_hbainfo() call
  igb: reset PHY after recovering from PHY power down
  igb: add basic runtime PM support
  igb: Add support for byte queue limits.
  e1000: cleanup CE4100 MDIO registers access
  e1000: unmap ce4100_gbe_mdio_base_virt in e1000_remove
  ...
2012-01-06 17:22:09 -08:00
Linus Torvalds 376613e81d Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, tsc: Skip TSC synchronization checks for tsc=reliable
  clocksource: Convert tcb_clksrc to use clocksource_register_hz/khz
  clocksource: cris: Convert to clocksource_register_khz
  clocksource: xtensa: Convert to clocksource_register_hz/khz
  clocksource: um: Convert to clocksource_register_hz/khz
  clocksource: parisc: Convert to clocksource_register_hz/khz
  clocksource: m86k: Convert to clocksource_register_hz/khz
  time: x86: Replace LATCH with PIT_LATCH in i8253 clocksource driver
  time: x86: Remove CLOCK_TICK_RATE from acpi_pm clocksource driver
  time: x86: Remove CLOCK_TICK_RATE from mach_timer.h
  time: x86: Remove CLOCK_TICK_RATE from tsc code
  time: Fix spelling mistakes in new comments
  time: fix bogus comment in timekeeping_get_ns_raw
2012-01-06 13:57:44 -08:00
Greg Kroah-Hartman ff4b8a57f0 Merge branch 'driver-core-next' into Linux 3.2
This resolves the conflict in the arch/arm/mach-s3c64xx/s3c6400.c file,
and it fixes the build error in the arch/x86/kernel/microcode_core.c
file, that the merge did not catch.

The microcode_core.c patch was provided by Stephen Rothwell
<sfr@canb.auug.org.au> who was invaluable in the merge issues involved
with the large sysdev removal process in the driver-core tree.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-06 11:42:52 -08:00
Geert Uytterhoeven 3bd9e50b42 m68k/mac: Make CONFIG_HEARTBEAT unavailable on Mac
mac_heartbeat() was never really implemented.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
2012-01-04 22:23:50 +01:00
Al Viro 84dfa9897e consolidate a bunch of ipcbuf.h instances
... some still remain weird :-/

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:55:18 -05:00
Al Viro 0583fcc96b consolidate umode_t declarations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03 22:55:17 -05:00
Greg Ungerer 1f7034b961 m68k: allow ColdFire 547x and 548x CPUs to be built with MMU enabled
The ColdFire 547x and 548x CPUs have internal MMU hardware. All code
to support this is now in, so we can build kernels with it enabled.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:50 +10:00
Geert Uytterhoeven ad8f955daf m68k/Kconfig: Separate classic m68k and coldfire early
While you can build multiplatform kernels for machines with classic
m68k processors, you cannot mix support for classic m68k and coldfire
processors. To avoid such hybrid kernels, introduce CONFIG_M68KCLASSIC
as an antipole for CONFIG_COLDFIRE, and make all specific processor
support depend on one of them.
All classic m68k machine support also needs to depend on this.

The defaults (CONFIG_M68KCLASSIC if MMU, CONFIG_COLDFIRE if !MMU) are
chosen such to make most of the existing configs build and work.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-30 10:20:49 +10:00
Greg Ungerer fbe3364ac4 m68k: add ColdFire with MMU enabled support to the m68k mem init code
The ColdFire has similar setup requirements to the SUN3 code, so we
use that.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:48 +10:00
Greg Ungerer 3f0060b0e8 m68k: do not use m68k startup or interrupt code for ColdFire CPUs
The ColdFire CPUs have their own startup and interrupt code (in the
platform/coldfire directory), and do not use the general m68k startup and
interrupt code. In fact the use of the arch/m68k/kernel/head.o is not about
CONFIG_MMU or not, it is really about the machine type we are compiling for.

Modify the selection and use of head.o to be based on the machine type.
Only select the local ints.o and vectors.o code if we are using the classic
68k CPU types (that use the conventional Morotola MMU or SUN3 MMU).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:48 +10:00
Greg Ungerer 0a2796da11 m68k: add ColdFire FPU support for the V4e ColdFire CPUs
The V4e ColdFire CPU family also has an integrated FPU (as well as the MMU).
So add code to support this hardware along side the existing m68k FPU code.

The ColdFire FPU is of course different to all previous 68k FP units. It is
close in operation to the 68060, but not completely compatible. The biggest
issue to deal with is that the ColdFire FPU multi-move instructions are
different. It does not support multi-moving the FP control registers, and
the multi-move of the FP data registers uses a different instruction
mnemonic.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:47 +10:00
Greg Ungerer e9fcffa493 m68k: adjustments to stack frame for ColdFire with MMU enabled
The exception return stack adjustment required by ColdFire when running
with the MMU enabled is not completely identical to 680x0 processors.
Specifically the format type 4 stack frame doesn't need any stack
adjustment on exception return. And the ColdFire always must return with
a frame type of 4, not 0.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:45 +10:00
Greg Ungerer ed865e31a8 m68k: use non-MMU linker script for ColdFire MMU builds
Use the non-MMU linker script for ColdFire builds when we are building
for MMU enabled. The image layout is correct for loading on existing
ColdFire dev boards. The only addition required to the current non-MMU
linker script is to add support for the fixup section.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:44 +10:00
Greg Ungerer 4a13c6dc64 m68k: ColdFire with MMU enabled uses same clocking code as non-MMU
We want to use the same timer support code for ColdFire CPU's when
running with MMU enabled or not. So use the same time_no.c code even
when the MMU is enabled for ColdFire. This also means we do not want
CONFIG_ARCH_USES_GETTIMEOFFSET set, since that code is only in time_mm.c.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-30 10:20:43 +10:00
Greg Ungerer 3731454033 m68k: add code to setup a ColdFire 54xx platform when MMU enabled
We use the same setup code for ColdFire MMU enabled platforms as
standard m68k. So add support for it to setup our 54xx ColdFire
platforms. They do not support the same bootinfo parsing as other
m68k platforms.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:42 +10:00
Greg Ungerer ef6aa00dc8 m68k: use non-MMU entry.S code when compiling for ColdFire CPU
No matter whether we are configured for non-MMU or MMU enabled if we are
compiling for ColdFire CPU we always use the entry_no.S code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:41 +10:00
Greg Ungerer 74d4799221 m68k: create ColdFire MMU pgalloc code
Add code to support the ColdFire V4e MMU pgalloc functions.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:40 +10:00
Greg Ungerer 0e6782c880 m68k: compile appropriate mm arch files for ColdFire MMU support
Create a config symbol to enable when using a ColdFire MMU. We then
use that to only compile the necessary arch mm files.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:39 +10:00
Greg Ungerer 066bf87b5c m68k: ColdFire V4e MMU paging init code and miss handler
The different ColdFire V4e MMU requires its own dedicated paging init
code, and a TLB miss handler for its software driven TLB.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:38 +10:00
Greg Ungerer d49316e84b m68k: use ColdFire MMU read/write bit flags when ioremapping
The ColdFire MMU has separate read and write bits, unlike the Motorola
m68k MMU which has a single read-only bit.

Define a _PAGE_READWRITE value for the Motorola MMU, which is 0, so we
can unconditionaly include that in the page table entry bits when setting
up ioremapped pages.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-30 10:20:37 +10:00
Greg Ungerer 6061019255 m68k: modify cache push and clear code for ColdFire with MMU enable
The cache push and clear code only need to flush the branch cache on
the write-through cache setup of the ColdFire V4e with MMU enabled.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:36 +10:00
Greg Ungerer 8b38f3c923 m68k: use tracehook_report_syscall_entry/exit for ColdFire MMU ptrace path
The existing ColdFire code (which is all non-mmu) for system call entry
and exit uses the more modern tracehook_report_syscall_entry()/exit()
into the ptrace code. Now that we are supporting ColdFire with MMU we
need the same hooks for these.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:35 +10:00
Greg Ungerer 83b73d6cb8 m68k: ColdFire V4e MMU context support code
Add code to manage the context's of the ColdFire V4e MMU. This code is
mostly taken from the Freescale 2.6.35 kernel BSP for MMU enabled ColdFire.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:34 +10:00
Greg Ungerer 33d4bcca60 m68k: MMU enabled ColdFire needs 8k ELF alignment
Like the SUN3 hardware MMU the ColdFire MMU uses 8k pages. So we want
our ELF page size alingment to also be 8k. Modify the ELF alignment
setting.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:33 +10:00
Greg Ungerer 9e95f7cdf5 m68k: set ColdFire MMU page size
We use the ColdFire V4e MMU page size of 8KiB. Define PAGE_SHIFT
appropriately.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:32 +10:00
Greg Ungerer bfe4375a1a m68k: define PAGE_OFFSET_RAW for ColdFire CPU with MMU enabled
The ColdFire CPU configurations need PAGE_OFFSET_RAW set to the base of
their RAM. It doesn't matter if they are running with the MMU enabled or
disabled, it is always set to the base of RAM.

We can keep the choices simple here and key of CONFIG_RAMBASE. If it is
defined we are on a plaftorm (ColdFire or other non-MMU systems) which
have a configurable RAM base, just use it.

Reported-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-30 10:20:31 +10:00
Greg Ungerer b852de4e7f m68k: add TLB flush support for the ColdFire V4e MMU hardware
The ColdFire V4e MMU is unlike any of the other m68k MMU hardware.
It needs its own TLB flush support code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:30 +10:00
Greg Ungerer 0b0b808b50 m68k: modify ColdFire 54xx cache support for MMU enabled
Modify the cache setup for the ColdFire 54xx parts when running with
the MMU enabled.

We want to map the peripheral register space (MBAR region) as non
cacheable. And create an identity mapping for all of RAM for the
kernel.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:29 +10:00
Greg Ungerer ae2eca724a m68k: add cache support for V4e ColdFire cores running with MMU enabled
Add code to deal with instruction, data and branch caches of the V4e
ColdFire cores when they are running with the MMU enabled.

This code is loosely based on Freescales changes for the caches of the
V4e ColdFire in the 2.6.25 kernel BSP. That code was originally by
Kurt Mahan <kmahan@freescale.com> (now <kmahan@xmission.com>).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:28 +10:00
Greg Ungerer 78d705e3be m68k: add ColdFire paging exception handling code
Add code to traps.c to handle MMU exceptions for the ColdFire.
Most of this code is from the 2.6.25 kernel BSP code released by
Freescale.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:27 +10:00
Greg Ungerer 813db7fc15 m68k: add page table size definitions for ColdFire V4e MMU
Define the page table size and attributes for the ColdFire V4e MMU.
Also setup the vmalloc and kmap regions we will use.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:26 +10:00
Greg Ungerer 91521c2ea6 m68k: page table support definitions and code for ColdFire MMU
The ColdFire V4e MMU is nothing like any of the other m68k MMU's.
So we need to create a set of definitions and support routines
for the kernels paging functions.

This is largely taken from Freescales BSP code for this (though it
was a 2.6.25 kernel). I have cleaned it up alot from the original.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:25 +10:00
Greg Ungerer bbc6f1ba50 m68k: set register a2 to current if MMU enabled on ColdFire
Virtual memory m68k systems build with register a2 dedicated to being the
current proc pointer (non-MMU don't do this). Add code to the ColdFire
interrupt and exception processing to set this on entry, and at context
switch time. We use the same GET_CURRENT() macro that MMU enabled code
uses - modifying it so that the assembler is ColdFire clean.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-30 10:20:24 +10:00
Greg Ungerer 88be351593 m68k: add ColdFire 54xx CPU MMU memory init code
Add code to the 54xx ColdFire CPU init to setup memory ready for the m68k
paged memory start up.

Some of the RAM variables that were specific to the non-mmu code paths
now need to be used during this setup, so when CONFIG_MMU is enabled.
Move these out of page_no.h and into page.h.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-30 10:20:23 +10:00
Greg Ungerer 0079fe7502 m68k: init the MMU hardware for the 54xx ColdFire
The 54xx ColdFire CPU family has an internal MMU. Up to now though we
have only supported running on them with the MMU disabled.

Add code to the 54xx ColdFire init sequence to initialize the bootmem
used by the usual MMU m68k code for paging init.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:23 +10:00
Greg Ungerer feb1ee7595 m68k: use addr_limit checking for m68k CPUs that do no support address spaces
The ColdFire CPU family, and the original 68000, do not support separate
address spaces like the other 680x0 CPU types. Modify the set_fs()/get_fs()
functions and macros to use a thread_info addr_limit for address space
checking. This is pretty much what all other architectures that do not
support separate setable address spaces do.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:22 +10:00
Greg Ungerer e08d703cc2 m68k: modify user space access functions to support ColdFire CPUs
Modify the user space access functions to support the ColdFire V4e cores
running with MMU enabled.

The ColdFire processors do not support the "moves" instruction used by
the traditional 680x0 processors for moving data into and out of another
address space. They only support the notion of a single address space,
and you use the usual "move" instruction to access that.

Create a new config symbol (CONFIG_CPU_HAS_ADDRESS_SPACES) to mark the
CPU types that support separate address spaces, and thus also support
the sfc/dfc registers and the "moves" instruction that go along with that.

The code is almost identical for user space access, so lets just use a
define to choose either the "move" or "moves" in the assembler code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-30 10:20:21 +10:00
Greg Ungerer 2c9b82adb5 m68k: add TASK definitions for ColdFires running with MMU
Add appropriate TASK_SIZE and TASK_UNMAPPED_BASE definitions for running
on ColdFire V4e cores with MMU enabled.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:20 +10:00
Greg Ungerer 78ccdffc93 m68k: make interrupt definitions conditional on correct CPU types
The interrupt handling support defines and code is not so much conditional
on an MMU being present (CONFIG_MMU), as it is on which type of CPU we are
building for. So make the code conditional on the CPU types instead. The
current irq.h is mostly specific to the interrupt code for the 680x0 CPUs,
so it should only be used for them.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:19 +10:00
Greg Ungerer 8cee26f82a m68k: definitions for the ColdFire V4e MMU hardware
Basic register level definitions to support the internal MMU of the
V4e ColdFire cores.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:18 +10:00
Greg Ungerer 060632adc1 m68k: show ColdFire CPU/FPU/MMU type
Update the show_cpuinfo() code to display info about ColdFire cores.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:17 +10:00
Greg Ungerer 59dbb3b168 m68k: add machine and CPU definitions for ColdFire cores
Create machine and CPU definitions to support the ColdFire CPU family
members that have a virtual memory management unit.

The ColdFire V4e core contains an MMU, and it is quite different to
any other 68k family members.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
2011-12-30 10:20:16 +10:00
Greg Ungerer 2c85bd3189 m68knommu: remove no longer used rom_length from Palm/Pilot start up code
Compiling for the m68knommu/68328 Palm/Pilot target you get:

  LD      vmlinux
arch/m68k/platform/68328/head.o: In function `L3':
(.text+0x170): undefined reference to `rom_length'

"rom_length" is not used any longer by any of the m68knommu code.
So remove it from here too.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-30 10:20:15 +10:00
Greg Ungerer c0e0c89c08 m68knommu: fix broken boot logo inclusion
Compiling for the m68knommu/68328 Palm/Pilot target you get:

  AS      arch/m68k/platform/68328/head-pilot.o
arch/m68k/platform/68328/head-pilot.S:37:23: fatal error: bootlogo.rh: No such file or directory

The build for this target used to do a conversion on a C coded boot logo
and include this in the head assembler code. This got broken by changes to
the local Makefile.

Clean all this up by just including the C coded boot logo struct in the
C code. With the appropriate alignment attribute there is no difference
to the way it can be used.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-30 10:17:34 +10:00
Geert Uytterhoeven 176f2934d1 m68k/serial: Remove references to obsolete serial config options
- ATARI_MFPSER, ATARI_MIDI, MULTIFACE_III_TTY, and DN_SERIAL
    have no corresponding drivers (anymore),
  - Clean up SERIAL_CONSOLE dependencies and help text.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-28 20:14:41 +01:00
Greg Ungerer 40c1b9cfee m68k: consolidate the vmlinux.lds linker scripts
The merge of m68knommu left the linker scripts a little disorganized.
Some consistent naming and squashing two of scripts that just include
others can simplify things a lot.

So merge the two simple including scripts, and rename the nommu script
to be consistent with the existing m68k linker scripts.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:58 +10:00
Greg Ungerer 45f9e2cdcd m68knommu: remove unused anchor.h include file
The code that used the anchor.h include file has long been removed from
the kernel. Remove it too.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:58 +10:00
Greg Ungerer 1f2aab01ba m68knommu: fix broken ColdFire slice timer read_clk() code
There is a race on reading the ColdFire slice timer current count and the
total clock count so far. Interrupts are off, and we may have just missed
getting a new timer wrap event interrupt. Check for this and adjust the
cycle count and current read count accordingly.

Also the slice timer counts down from the terminal count. So in read_clk()
we need take the current clock count away from the terminal count.

Reported-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:58 +10:00
Greg Ungerer ec84118795 m68knommu: disable cache early in startup for ColdFire
Disbale the CPU cache really early in the ColdFire startup code. We set
up some variables for RAM sizing and we want to make they stick in RAM.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:58 +10:00
Greg Ungerer 84f3fb7a2a m68k: handle presence of 64bit mul/div instructions cleanly
The traditional 68000 processors and the newer reduced instruction set
ColdFire processors do not support the 32*32->64 multiply or the 64/32->32
divide instructions. This is not a difference based on the presence of
a hardware MMU or not.

Create a new config symbol to mark that a CPU type doesn't support the
longer multiply/divide instructions. Use this then as a basis for using
the fast 64bit based divide (in div64.h) and for linking in the extra
libgcc functions that may be required (mulsi3, divsi3, etc).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-24 21:47:57 +10:00
Greg Ungerer 7f73bafc46 m68k: simpler m68k and ColdFire CPU's can use generic csum code
We have two implementations of the IP checksuming code for the m68k arch.
One uses the more advanced instructions available in 68020 and above
processors, the other uses the simpler instructions available on the
original 68000 processors and the modern ColdFire processors.

This simpler code is pretty much the same as the generic lib implementation
of the IP csum functions. So lets just switch over to using that. That
means we can completely remove the checksum_no.c file, and only have the
local fast code used for the more complex 68k CPU family members.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:57 +10:00
Greg Ungerer 479badc364 m68k: make fp register stores consistent for m68k and ColdFire
There is no reason we can't make the saved fp registers the same for all
m68k types and ColdFire. There is a little wasted space, but the code
consistency and cleanliness is a big win.

sigcontext.h is an exported header, but currently there is no in-mainline
users of the !__uClinux__ and __mcoldfire__ case that this change effects.
Even better this change actually makes this structure consistent with
the out-of-mainline ColdFire/MMU code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-24 21:47:57 +10:00
Greg Ungerer 46729d0eb3 m68knommu: no need to set register marker on traps
Commit 61619b1207 ("m68k: merge mmu and
non-mmu include/asm/entry.h files") made the trap entry code basically
the same for mmu and non-mmu builds. This means we no longer need code
to mark the stack frame as "system-call" type or other in the non-mmu
trap handling entry points. This is done in the SAVE_ALL_INT macro now.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:57 +10:00
Greg Ungerer d1db9120cd m68k: support configure time command line for MMU m68k
The non-MMU builds of m68k allow a fixed kernel boot command line to
be configured at configure time. Allow this MMU builds as well.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:57 +10:00
Greg Ungerer e87c09a899 m68k: print memory layout info in boot log
Output a table of the kernel memory regions at boot time.
This is taken directly from the ARM architecture code that does this.
The table looks like this:

Virtual kernel memory layout:
    vector  : 0x00000000 - 0x00000400   (   0 KiB)
    kmap    : 0xd0000000 - 0xe0000000   ( 256 MiB)
    vmalloc : 0xc0000000 - 0xcfffffff   ( 255 MiB)
    lowmem  : 0x00000000 - 0x02000000   (  32 MiB)
      .init : 0x00128000 - 0x00134000   (  48 KiB)
      .text : 0x00020000 - 0x00118d54   ( 996 KiB)
      .data : 0x00118d60 - 0x00126000   (  53 KiB)
      .bss  : 0x00134000 - 0x001413e0   (  53 KiB)

This has been very useful while debugging the ColdFire virtual memory
support code. But in general I think it is nice to know extacly where
the kernel has layed everything out on boot.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:57 +10:00
Greg Ungerer 361a541dc2 m68knommu: move definition of mach_gettod to where it is used
The mach_gettod function pointer is only called from the time_no.c
code. So move its actual definition to there too. It is currently in
setup_no.c for no particularly good reason.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:57 +10:00
Greg Ungerer 5717a02bec m68k: selection of GENERIC_ATOMIC64 is not MMU specific
The selection of the CONFIG_GENERIC_ATOMIC64 option is not specific to the
MMU being present and enabled. It is a property of certain CPU families.
So select it based on those CPU types being selected.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:57 +10:00
Greg Ungerer d25ba98afc m68k: remove thread_info struct from thread struct
Currently on m68k we have a comeplete thread_info structure stored inside
of the thread_struct, and we also have it in the initial part of the kernel
stack. Mostly the code currently uses the one inside of the thread_struct,
only using the "task" pointer from the stack based one.

This is wasteful and confusing, we should only have the single instance of
thread_info inside the stack page. And this is the norm for all other
architectures.

This change makes m68k handle thread_info consistently on both MMU enabled
and non-MMU setups.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:56 +10:00
Greg Ungerer 8d362b0dea m68k: remove duplicate asm offset for task thread.info
We have a duplicate name and definition for the offset of the thread.info
struct within the task struct in our asm-offsets.c code. Remove one of them,
and consolidate to use a single define, TASK_INFO.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-24 21:47:56 +10:00
Greg Ungerer 409ee2455c m68k: merge the init_task code for mmu and non-mmu targets
The init_task code can be the same for both mmu and non-mmu targets.
None of the alignment carried out in the the current init_task code
is necessary. The linker script takes care of aligning the init_thread
structure to a THREAD SIZE boundary, and that is all we need.

So use the init_task.c code for all target types, that makes m68k
code consistent with what most other architectures do.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-24 21:47:56 +10:00
Greg Ungerer ed3da2c443 m68knommu: remove unused fasthandler declaration
The fasthandler code was removed long ago. Remove the now unused
declaration of it.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:56 +10:00
Mark Brown d85b409486 m68k: Fall back to __gpio_to_irq() for non-arch GPIOs
gpiolib provides __gpio_to_irq() to map gpiolib gpios to interrupts - hook
that up on m68k.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:56 +10:00
john stultz a2a3dfb8ef clocksource: m86k: Convert to clocksource_register_hz/khz
Updated to merge the valid bits of the two m68k patches.

This converts the m86k clocksources to use clocksource_register_hz/khz

This is untested, so any assistance in testing would be appreciated!

CC: Geert Uytterhoeven <geert@linux-m68k.org>
CC: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-12-24 21:47:56 +10:00
David S. Miller abb434cb05 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	net/bluetooth/l2cap_core.c

Just two overlapping changes, one added an initialization of
a local variable, and another change added a new local variable.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-23 17:13:56 -05:00
Kay Sievers a6ec0c03a0 m86k: gpio - convert sysdev_class to a regular subsystem
After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-12-21 15:09:54 -08:00
Rafael J. Wysocki b00f4dc5ff Merge branch 'master' into pm-sleep
* master: (848 commits)
  SELinux: Fix RCU deref check warning in sel_netport_insert()
  binary_sysctl(): fix memory leak
  mm/vmalloc.c: remove static declaration of va from __get_vm_area_node
  ipmi_watchdog: restore settings when BMC reset
  oom: fix integer overflow of points in oom_badness
  memcg: keep root group unchanged if creation fails
  nilfs2: potential integer overflow in nilfs_ioctl_clean_segments()
  nilfs2: unbreak compat ioctl
  cpusets: stall when updating mems_allowed for mempolicy or disjoint nodemask
  evm: prevent racing during tfm allocation
  evm: key must be set once during initialization
  mmc: vub300: fix type of firmware_rom_wait_states module parameter
  Revert "mmc: enable runtime PM by default"
  mmc: sdhci: remove "state" argument from sdhci_suspend_host
  x86, dumpstack: Fix code bytes breakage due to missing KERN_CONT
  IB/qib: Correct sense on freectxts increment and decrement
  RDMA/cma: Verify private data length
  cgroups: fix a css_set not found bug in cgroup_attach_proc
  oprofile: Fix uninitialized memory access when writing to writing to oprofilefs
  Revert "xen/pv-on-hvm kexec: add xs_reset_watches to shutdown watches from old kernel"
  ...

Conflicts:
	kernel/cgroup_freezer.c
2011-12-21 21:59:45 +01:00
Andreas Schwab 0c51a0c6a3 m68k: Don't comment out syscalls used by glibc
Define again the syscalls that are used by glibc so that it is possible to
compile a feature-complete glibc with the newest kernel headers.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-10 19:52:49 +01:00
Geert Uytterhoeven 125298d2da m68k/atari: Move declaration of atari_SCC_reset_done to header file
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-10 19:52:49 +01:00
Geert Uytterhoeven 1d9532b3fa m68k/serial: Remove references to obsolete CONFIG_SERIAL167
commit 51c9d654c2 ("Staging: delete tty
drivers") removed the MVME167 serial driver, but forgot to remove these
references.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-10 19:52:48 +01:00
Geert Uytterhoeven f808b86507 m68k/hp300: Export hp300_ledstate
The accidental loss of CONFIG_DIO in commit
0e152d8050 ("m68k: reorganize Kconfig options
to improve mmu/non-mmu selections") exposed a missing symbol export in
m68k allmodconfig.  If CONFIG_HP300=y but CONFIG_HPLANCE (which is bool,
and depends on CONFIG_DIO) is not set, and CONFIG_MVME147=y and
CONFIG_MVME147_NET=m, 7990.c is compiled as a module, giving:

ERROR: "ledstate" [drivers/net/ethernet/amd/7990.ko] undefined!

Add the missing export, and rename ledstate to hp300_ledstate while we're
at it, as it's a too generic name.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-10 19:52:48 +01:00
Andi Kleen 9d7a51d509 m68k: Initconst section fixes
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-10 19:52:48 +01:00
Finn Thain 608e287b05 m68k/mac: cleanup macro case
Code style convention has macro names in uppercase. Change MAC_VIA_IIci to MAC_VIA_IICI.

Also remove an obsolete comment.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-10 19:52:48 +01:00
Finn Thain aa8a9fbe18 mac_scsi: fix mac_scsi on some powerbooks
Fix the mac_scsi interrupt edge trigger on non-RBV PowerBooks. This doesn't appear to help my PowerBook 520 but the NetBSD source reveals that the PowerBook 500 series is different than the others.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-10 19:52:47 +01:00
Finn Thain 4107c459fe m68k/mac: fix powerbook 150 adb_type
The PowerBook 150 is a actually a Duo underneath. Fix the adb_type.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-12-10 19:52:47 +01:00