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The ColdFire M54xx SoC family have a traditional PCI bus interface.
Add the core support code to access and use this bus on these parts.
This code provides all the config space access functions and IO access
functions. It also carries out the PCI bus initialization and hooks into
the kernel PCI subsystem.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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Quite a few of Freescale's older ColdFire development boards used an NS8390
based ethernet interface. Add a platform definition for the resources used
by these devices so we can use it on these boards.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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Add support for the Coldfire 5441x (54410/54415/54416/54417/54418). Currently
we only support noMMU mode. It requires the PIT patch posted previously as it
uses the PIT instead of the dma timer as a clock source so we can get all that
GENERIC_CLOCKEVENTS goodness. It also adds some simple clk definitions and
very simple minded power management. The gpio code is tweeked and some
additional devices are added to devices.c. The Makefile uses -mv4e as
apparently, the only difference a v4m (m5441x) and a v4e is the later has a
FPU, which I don't think should matter to us in the kernel.
Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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Basic support for the Coldfire 5251/5253.
Signed-off-by: Steven king <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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mcf_gpio_chips.
If we're not connecting external GPIO extenders via i2c or spi or whatever, we
probably don't need GPIOLIB. If we provide an alternate implementation of
the GPIOLIB functions to use when only on-chip GPIO is needed, we can change
ARCH_REQUIRE_GPIOLIB to ARCH_WANTS_OPTIONAL_GPIOLIB so that GPIOLIB becomes
optional.
The downside is that in the GPIOLIB=n case, we lose all error checking done by
gpiolib, ie multiply allocating the gpio, free'ing gpio etc., so that the
only checking that can be done is if we reference a gpio on an external part.
Targets that need the extra error checking can still select GPIOLIB=y.
For the case where GPIOLIB=y, we can simplify the table of gpio chips to use a
single chip, eliminating the tables of chips in the 5xxx.c files. The
original motivation for the definition of multiple chips was to match the way
many of the Coldfire variants defined their gpio as a spare array in memory.
However, all this really gains us is some error checking when we request a
gpio, gpiolib can check that it doesn't fall in one of the holes. If thats
important, I think we can still come up with a better way of accomplishing
that.
Also in this patch is some general cleanup and reorganizing of the gpio header
files (I'm sure I must have had a reason why I sometimes used a prefix of
mcf_gpio and other times mcfgpio but for the life of me I can't think of it
now).
Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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All these separate directories for each ColdFire CPU SoC varient seems like
overkill. The majority of them only contain a single small config file. Move
these into the common ColdFire code directory.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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Most of the more modern ColdFire cores use the same code to reset the CPU
(but it is different to most of the earlier cores). Currently that is
duplicated in each of the sub-arch files. Pull out this common code and
out a single copy of it with the other common reset code.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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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>
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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>
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There is a lot of common code that could be shared between the m68k
and m68knommu arch branches. It makes sense to merge the two branches
into a single directory structure so that we can more easily share
that common code.
This is a brute force merge, based on a script from Stephen King
<sfking@fdwdc.com>, which was originally written by Arnd Bergmann
<arnd@arndb.de>.
> The script was inspired by the script Sam Ravnborg used to merge the
> includes from m68knommu. For those files common to both arches but
> differing in content, the m68k version of the file is renamed to
> <file>_mm.<ext> and the m68knommu version of the file is moved into the
> corresponding m68k directory and renamed <file>_no.<ext> and a small
> wrapper file <file>.<ext> is used to select between the two version. Files
> that are common to both but don't differ are removed from the m68knommu
> tree and files and directories that are unique to the m68knommu tree are
> moved to the m68k tree. Finally, the arch/m68knommu tree is removed.
>
> To select between the the versions of the files, the wrapper uses
>
> #ifdef CONFIG_MMU
> #include <file>_mm.<ext>
> #else
> #include <file>_no.<ext>
> #endif
On top of this file merge I have done a simplistic merge of m68k and
m68knommu Kconfig, which primarily attempts to keep existing options and
menus in place. Other than a handful of options being moved it produces
identical .config outputs on m68k and m68knommu targets I tested it on.
With this in place there is now quite a bit of scope for merge cleanups
in future patches.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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