m68k: reorganize Kconfig options to improve mmu/non-mmu selections

The current mmu and non-mmu Kconfig files can be merged to form
a more general selection of options. The current break up of options
is due to the simple brute force merge from the m68k and m68knommu
arch directories.

Many of the options are not at all specific to having the MMU enabled
or not. They are actually associated with a particular CPU type or
platform type.

Ultimately as we support all processors with the MMU disabled we need
many of these options to be selectable without the MMU option enabled.
And likewise some of the ColdFire processors, which currently are only
supported with the MMU disabled, do have MMU hardware, and will need
to have options selected on CPU type, not MMU disabled.

This patch removes the old mmu and non-mmu Kconfigs and instead breaks
up the configuration into four areas: cpu, machine, bus, devices.

The Kconfig.cpu lists all the options associated with selecting a CPU,
and includes options specific to each CPU type as well.

Kconfig.machine lists all options associated with selecting a machine
type. Almost always the machines selectable is restricted by the chosen
CPU.

Kconfig.bus contains options associated with selecting bus types on the
various machine types. That includes PCI bus, PCMCIA bus, etc.

Kconfig.devices contains options for drivers and driver associated
options.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

arch/m68k/Kconfig

@@ -21,6 +21,15 @@ config ARCH_HAS_ILOG2_U32
 config ARCH_HAS_ILOG2_U64
 	bool
 
+config GENERIC_CLOCKEVENTS
+	bool
+
+config GENERIC_CMOS_UPDATE
+	def_bool !MMU
+
+config GENERIC_GPIO
+	bool
+
 config GENERIC_HWEIGHT
 	bool
 	default y
@@ -29,10 +38,16 @@ config GENERIC_CALIBRATE_DELAY
 	bool
 	default y
 
+config GENERIC_IOMAP
+	def_bool MMU
+
 config TIME_LOW_RES
 	bool
 	default y
 
+config ARCH_USES_GETTIMEOFFSET
+	def_bool MMU
+
 config NO_IOPORT
 	def_bool y
 
@@ -62,13 +77,31 @@ config MMU
 	  Select if you want MMU-based virtualised addressing space
 	  support by paged memory management. If unsure, say 'Y'.
 
-menu "Platform dependent setup"
+config MMU_MOTOROLA
+	bool
 
-if MMU
-source arch/m68k/Kconfig.mmu
+config MMU_SUN3
+	bool
+	depends on MMU && !MMU_MOTOROLA
+
+menu "Platform setup"
+
+source arch/m68k/Kconfig.cpu
+
+source arch/m68k/Kconfig.machine
+
+source arch/m68k/Kconfig.bus
+
+endmenu
+
+menu "Kernel Features"
+
+if COLDFIRE
+source "kernel/Kconfig.preempt"
 endif
-if !MMU
-source arch/m68k/Kconfig.nommu
+
+if !MMU || COLDFIRE
+source "kernel/time/Kconfig"
 endif
 
 source "mm/Kconfig"
@@ -96,151 +129,7 @@ source "net/Kconfig"
 
 source "drivers/Kconfig"
 
-if MMU
-
-menu "Character devices"
-
-config ATARI_MFPSER
-	tristate "Atari MFP serial support"
-	depends on ATARI
-	---help---
-	  If you like to use the MFP serial ports ("Modem1", "Serial1") under
-	  Linux, say Y. The driver equally supports all kinds of MFP serial
-	  ports and automatically detects whether Serial1 is available.
-
-	  To compile this driver as a module, choose M here.
-
-	  Note for Falcon users: You also have an MFP port, it's just not
-	  wired to the outside... But you could use the port under Linux.
-
-config ATARI_MIDI
-	tristate "Atari MIDI serial support"
-	depends on ATARI
-	help
-	  If you want to use your Atari's MIDI port in Linux, say Y.
-
-	  To compile this driver as a module, choose M here.
-
-config ATARI_DSP56K
-	tristate "Atari DSP56k support (EXPERIMENTAL)"
-	depends on ATARI && EXPERIMENTAL
-	help
-	  If you want to be able to use the DSP56001 in Falcons, say Y. This
-	  driver is still experimental, and if you don't know what it is, or
-	  if you don't have this processor, just say N.
-
-	  To compile this driver as a module, choose M here.
-
-config AMIGA_BUILTIN_SERIAL
-	tristate "Amiga builtin serial support"
-	depends on AMIGA
-	help
-	  If you want to use your Amiga's built-in serial port in Linux,
-	  answer Y.
-
-	  To compile this driver as a module, choose M here.
-
-config MULTIFACE_III_TTY
-	tristate "Multiface Card III serial support"
-	depends on AMIGA
-	help
-	  If you want to use a Multiface III card's serial port in Linux,
-	  answer Y.
-
-	  To compile this driver as a module, choose M here.
-
-config GVPIOEXT
-	tristate "GVP IO-Extender support"
-	depends on PARPORT=n && ZORRO
-	help
-	  If you want to use a GVP IO-Extender serial card in Linux, say Y.
-	  Otherwise, say N.
-
-config GVPIOEXT_LP
-	tristate "GVP IO-Extender parallel printer support"
-	depends on GVPIOEXT
-	help
-	  Say Y to enable driving a printer from the parallel port on your
-	  GVP IO-Extender card, N otherwise.
-
-config GVPIOEXT_PLIP
-	tristate "GVP IO-Extender PLIP support"
-	depends on GVPIOEXT
-	help
-	  Say Y to enable doing IP over the parallel port on your GVP
-	  IO-Extender card, N otherwise.
-
-config MAC_HID
-	bool
-	depends on INPUT_ADBHID
-	default y
-
-config HPDCA
-	tristate "HP DCA serial support"
-	depends on DIO && SERIAL_8250
-	help
-	  If you want to use the internal "DCA" serial ports on an HP300
-	  machine, say Y here.
-
-config HPAPCI
-	tristate "HP APCI serial support"
-	depends on HP300 && SERIAL_8250 && EXPERIMENTAL
-	help
-	  If you want to use the internal "APCI" serial ports on an HP400
-	  machine, say Y here.
-
-config MVME147_SCC
-	bool "SCC support for MVME147 serial ports"
-	depends on MVME147 && BROKEN
-	help
-	  This is the driver for the serial ports on the Motorola MVME147
-	  boards.  Everyone using one of these boards should say Y here.
-
-config MVME162_SCC
-	bool "SCC support for MVME162 serial ports"
-	depends on MVME16x && BROKEN
-	help
-	  This is the driver for the serial ports on the Motorola MVME162 and
-	  172 boards.  Everyone using one of these boards should say Y here.
-
-config BVME6000_SCC
-	bool "SCC support for BVME6000 serial ports"
-	depends on BVME6000 && BROKEN
-	help
-	  This is the driver for the serial ports on the BVME4000 and BVME6000
-	  boards from BVM Ltd.  Everyone using one of these boards should say
-	  Y here.
-
-config DN_SERIAL
-	bool "Support for DN serial port (dummy)"
-	depends on APOLLO
-
-config SERIAL_CONSOLE
-	bool "Support for serial port console"
-	depends on (AMIGA || ATARI || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_MIDI=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL)
-	---help---
-	  If you say Y here, it will be possible to use a serial port as the
-	  system console (the system console is the device which receives all
-	  kernel messages and warnings and which allows logins in single user
-	  mode). This could be useful if some terminal or printer is connected
-	  to that serial port.
-
-	  Even if you say Y here, the currently visible virtual console
-	  (/dev/tty0) will still be used as the system console by default, but
-	  you can alter that using a kernel command line option such as
-	  "console=ttyS1". (Try "man bootparam" or see the documentation of
-	  your boot loader (lilo or loadlin) about how to pass options to the
-	  kernel at boot time.)
-
-	  If you don't have a VGA card installed and you say Y here, the
-	  kernel will automatically use the first serial line, /dev/ttyS0, as
-	  system console.
-
-	  If unsure, say N.
-
-endmenu
-
-endif
+source "arch/m68k/Kconfig.devices"
 
 source "fs/Kconfig"
 

arch/m68k/Kconfig.bus

+if MMU
+
+comment "Bus Support"
+
+config NUBUS
+	bool
+	depends on MAC
+	default y
+
+config ZORRO
+	bool "Amiga Zorro (AutoConfig) bus support"
+	depends on AMIGA
+	help
+	  This enables support for the Zorro bus in the Amiga. If you have
+	  expansion cards in your Amiga that conform to the Amiga
+	  AutoConfig(tm) specification, say Y, otherwise N. Note that even
+	  expansion cards that do not fit in the Zorro slots but fit in e.g.
+	  the CPU slot may fall in this category, so you have to say Y to let
+	  Linux use these.
+
+config AMIGA_PCMCIA
+	bool "Amiga 1200/600 PCMCIA support (EXPERIMENTAL)"
+	depends on AMIGA && EXPERIMENTAL
+	help
+	  Include support in the kernel for pcmcia on Amiga 1200 and Amiga
+	  600. If you intend to use pcmcia cards say Y; otherwise say N.
+
+config ISA
+	bool
+	depends on Q40 || AMIGA_PCMCIA
+	default y
+	help
+	  Find out whether you have ISA slots on your motherboard.  ISA is the
+	  name of a bus system, i.e. the way the CPU talks to the other stuff
+	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
+	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
+	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
+
+config GENERIC_ISA_DMA
+	def_bool ISA
+
+source "drivers/pci/Kconfig"
+
+source "drivers/zorro/Kconfig"
+
+endif
+
+if !MMU
+
+config ISA_DMA_API
+        def_bool !M5272
+
+source "drivers/pcmcia/Kconfig"
+
+endif

arch/m68k/Kconfig.devices

+if MMU
+
+config ARCH_MAY_HAVE_PC_FDC
+	bool
+	depends on BROKEN && (Q40 || SUN3X)
+	default y
+
+menu "Platform devices"
+
+config HEARTBEAT
+	bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40
+	default y if !AMIGA && !APOLLO && !ATARI && !MAC && !Q40 && HP300
+	help
+	  Use the power-on LED on your machine as a load meter.  The exact
+	  behavior is platform-dependent, but normally the flash frequency is
+	  a hyperbolic function of the 5-minute load average.
+
+# We have a dedicated heartbeat LED. :-)
+config PROC_HARDWARE
+	bool "/proc/hardware support"
+	help
+	  Say Y here to support the /proc/hardware file, which gives you
+	  access to information about the machine you're running on,
+	  including the model, CPU, MMU, clock speed, BogoMIPS rating,
+	  and memory size.
+
+endmenu
+
+menu "Character devices"
+
+config ATARI_MFPSER
+	tristate "Atari MFP serial support"
+	depends on ATARI
+	---help---
+	  If you like to use the MFP serial ports ("Modem1", "Serial1") under
+	  Linux, say Y. The driver equally supports all kinds of MFP serial
+	  ports and automatically detects whether Serial1 is available.
+
+	  To compile this driver as a module, choose M here.
+
+	  Note for Falcon users: You also have an MFP port, it's just not
+	  wired to the outside... But you could use the port under Linux.
+
+config ATARI_MIDI
+	tristate "Atari MIDI serial support"
+	depends on ATARI
+	help
+	  If you want to use your Atari's MIDI port in Linux, say Y.
+
+	  To compile this driver as a module, choose M here.
+
+config ATARI_DSP56K
+	tristate "Atari DSP56k support (EXPERIMENTAL)"
+	depends on ATARI && EXPERIMENTAL
+	help
+	  If you want to be able to use the DSP56001 in Falcons, say Y. This
+	  driver is still experimental, and if you don't know what it is, or
+	  if you don't have this processor, just say N.
+
+	  To compile this driver as a module, choose M here.
+
+config AMIGA_BUILTIN_SERIAL
+	tristate "Amiga builtin serial support"
+	depends on AMIGA
+	help
+	  If you want to use your Amiga's built-in serial port in Linux,
+	  answer Y.
+
+	  To compile this driver as a module, choose M here.
+
+config MULTIFACE_III_TTY
+	tristate "Multiface Card III serial support"
+	depends on AMIGA
+	help
+	  If you want to use a Multiface III card's serial port in Linux,
+	  answer Y.
+
+	  To compile this driver as a module, choose M here.
+
+config GVPIOEXT
+	tristate "GVP IO-Extender support"
+	depends on PARPORT=n && ZORRO
+	help
+	  If you want to use a GVP IO-Extender serial card in Linux, say Y.
+	  Otherwise, say N.
+
+config GVPIOEXT_LP
+	tristate "GVP IO-Extender parallel printer support"
+	depends on GVPIOEXT
+	help
+	  Say Y to enable driving a printer from the parallel port on your
+	  GVP IO-Extender card, N otherwise.
+
+config GVPIOEXT_PLIP
+	tristate "GVP IO-Extender PLIP support"
+	depends on GVPIOEXT
+	help
+	  Say Y to enable doing IP over the parallel port on your GVP
+	  IO-Extender card, N otherwise.
+
+config MAC_HID
+	bool
+	depends on INPUT_ADBHID
+	default y
+
+config HPDCA
+	tristate "HP DCA serial support"
+	depends on DIO && SERIAL_8250
+	help
+	  If you want to use the internal "DCA" serial ports on an HP300
+	  machine, say Y here.
+
+config HPAPCI
+	tristate "HP APCI serial support"
+	depends on HP300 && SERIAL_8250 && EXPERIMENTAL
+	help
+	  If you want to use the internal "APCI" serial ports on an HP400
+	  machine, say Y here.
+
+config MVME147_SCC
+	bool "SCC support for MVME147 serial ports"
+	depends on MVME147 && BROKEN
+	help
+	  This is the driver for the serial ports on the Motorola MVME147
+	  boards.  Everyone using one of these boards should say Y here.
+
+config MVME162_SCC
+	bool "SCC support for MVME162 serial ports"
+	depends on MVME16x && BROKEN
+	help
+	  This is the driver for the serial ports on the Motorola MVME162 and
+	  172 boards.  Everyone using one of these boards should say Y here.
+
+config BVME6000_SCC
+	bool "SCC support for BVME6000 serial ports"
+	depends on BVME6000 && BROKEN
+	help
+	  This is the driver for the serial ports on the BVME4000 and BVME6000
+	  boards from BVM Ltd.  Everyone using one of these boards should say
+	  Y here.
+
+config DN_SERIAL
+	bool "Support for DN serial port (dummy)"
+	depends on APOLLO
+
+config SERIAL_CONSOLE
+	bool "Support for serial port console"
+	depends on (AMIGA || ATARI || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_MIDI=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL)
+	---help---
+	  If you say Y here, it will be possible to use a serial port as the
+	  system console (the system console is the device which receives all
+	  kernel messages and warnings and which allows logins in single user
+	  mode). This could be useful if some terminal or printer is connected
+	  to that serial port.
+
+	  Even if you say Y here, the currently visible virtual console
+	  (/dev/tty0) will still be used as the system console by default, but
+	  you can alter that using a kernel command line option such as
+	  "console=ttyS1". (Try "man bootparam" or see the documentation of
+	  your boot loader (lilo or loadlin) about how to pass options to the
+	  kernel at boot time.)
+
+	  If you don't have a VGA card installed and you say Y here, the
+	  kernel will automatically use the first serial line, /dev/ttyS0, as
+	  system console.
+
+	  If unsure, say N.
+
+endmenu
+
+endif