# SPDX-License-Identifier: GPL-2.0

  comment "Processor Type"

  choice
  	prompt "CPU family support"
  	default M68KCLASSIC if MMU
  	default COLDFIRE if !MMU
  	help
  	  The Freescale (was Motorola) M68K family of processors implements
  	  the full 68000 processor instruction set.

  	  The Freescale ColdFire family of processors is a modern derivative

  	  of the 68000 processor family. They are mainly targeted at embedded
  	  applications, and are all System-On-Chip (SOC) devices, as opposed
  	  to stand alone CPUs. They implement a subset of the original 68000
  	  processor instruction set.
  	  If you anticipate running this kernel on a computer with a classic
  	  MC68xxx processor, select M68KCLASSIC.
  	  If you anticipate running this kernel on a computer with a ColdFire
  	  processor, select COLDFIRE.
  
  config M68KCLASSIC
  	bool "Classic M68K CPU family support"
  
  config COLDFIRE
  	bool "Coldfire CPU family support"

  	select ARCH_HAVE_CUSTOM_GPIO_H

  	select CPU_HAS_NO_BITFIELDS
  	select CPU_HAS_NO_MULDIV64
  	select GENERIC_CSUM

  	select GPIOLIB

  	select HAVE_LEGACY_CLK

  
  endchoice
  
  if M68KCLASSIC

  config M68000

  	bool "MC68000"

  	depends on !MMU

  	select CPU_HAS_NO_BITFIELDS

  	select CPU_HAS_NO_MULDIV64

  	select CPU_HAS_NO_UNALIGNED

  	select GENERIC_CSUM

  	select CPU_NO_EFFICIENT_FFS

  	select HAVE_ARCH_HASH

  	help
  	  The Freescale (was Motorola) 68000 CPU is the first generation of
  	  the well known M68K family of processors. The CPU core as well as
  	  being available as a stand alone CPU was also used in many
  	  System-On-Chip devices (eg 68328, 68302, etc). It does not contain
  	  a paging MMU.
  
  config MCPU32
  	bool
  	select CPU_HAS_NO_BITFIELDS

  	select CPU_HAS_NO_UNALIGNED

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  The Freescale (was then Motorola) CPU32 is a CPU core that is
  	  based on the 68020 processor. For the most part it is used in
  	  System-On-Chip parts, and does not contain a paging MMU.

  config M68020
  	bool "68020 support"
  	depends on MMU

  	select FPU

  	select CPU_HAS_ADDRESS_SPACES

  	help
  	  If you anticipate running this kernel on a computer with a MC68020
  	  processor, say Y. Otherwise, say N. Note that the 68020 requires a
  	  68851 MMU (Memory Management Unit) to run Linux/m68k, except on the
  	  Sun 3, which provides its own version.
  
  config M68030
  	bool "68030 support"
  	depends on MMU && !MMU_SUN3

  	select FPU

  	select CPU_HAS_ADDRESS_SPACES

  	help
  	  If you anticipate running this kernel on a computer with a MC68030
  	  processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
  	  work, as it does not include an MMU (Memory Management Unit).
  
  config M68040
  	bool "68040 support"
  	depends on MMU && !MMU_SUN3

  	select FPU

  	select CPU_HAS_ADDRESS_SPACES

  	help
  	  If you anticipate running this kernel on a computer with a MC68LC040
  	  or MC68040 processor, say Y. Otherwise, say N. Note that an
  	  MC68EC040 will not work, as it does not include an MMU (Memory
  	  Management Unit).
  
  config M68060
  	bool "68060 support"
  	depends on MMU && !MMU_SUN3

  	select FPU

  	select CPU_HAS_ADDRESS_SPACES

  	help
  	  If you anticipate running this kernel on a computer with a MC68060
  	  processor, say Y. Otherwise, say N.
  
  config M68328
  	bool "MC68328"
  	depends on !MMU
  	select M68000
  	help
  	  Motorola 68328 processor support.
  
  config M68EZ328
  	bool "MC68EZ328"
  	depends on !MMU
  	select M68000
  	help
  	  Motorola 68EX328 processor support.
  
  config M68VZ328
  	bool "MC68VZ328"
  	depends on !MMU
  	select M68000
  	help
  	  Motorola 68VZ328 processor support.

  endif # M68KCLASSIC
  
  if COLDFIRE

  choice
  	prompt "ColdFire SoC type"
  	default M520x
  	help
  	  Select the type of ColdFire System-on-Chip (SoC) that you want
  	  to build for.

  config M5206
  	bool "MCF5206"
  	depends on !MMU

  	select COLDFIRE_SW_A7
  	select HAVE_MBAR

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  Motorola ColdFire 5206 processor support.
  
  config M5206e
  	bool "MCF5206e"
  	depends on !MMU

  	select COLDFIRE_SW_A7
  	select HAVE_MBAR

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  Motorola ColdFire 5206e processor support.
  
  config M520x
  	bool "MCF520x"
  	depends on !MMU

  	select GENERIC_CLOCKEVENTS
  	select HAVE_CACHE_SPLIT
  	help
  	   Freescale Coldfire 5207/5208 processor support.
  
  config M523x
  	bool "MCF523x"
  	depends on !MMU

  	select GENERIC_CLOCKEVENTS
  	select HAVE_CACHE_SPLIT
  	select HAVE_IPSBAR
  	help
  	  Freescale Coldfire 5230/1/2/4/5 processor support
  
  config M5249
  	bool "MCF5249"
  	depends on !MMU

  	select COLDFIRE_SW_A7
  	select HAVE_MBAR

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  Motorola ColdFire 5249 processor support.

  config M525x
  	bool "MCF525x"
  	depends on !MMU
  	select COLDFIRE_SW_A7
  	select HAVE_MBAR

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  Freescale (Motorola) Coldfire 5251/5253 processor support.

  config M5271
  	bool "MCF5271"
  	depends on !MMU

  	select M527x
  	select HAVE_CACHE_SPLIT
  	select HAVE_IPSBAR
  	select GENERIC_CLOCKEVENTS
  	help
  	  Freescale (Motorola) ColdFire 5270/5271 processor support.
  
  config M5272
  	bool "MCF5272"
  	depends on !MMU

  	select COLDFIRE_SW_A7
  	select HAVE_MBAR

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  Motorola ColdFire 5272 processor support.
  
  config M5275
  	bool "MCF5275"
  	depends on !MMU

  	select M527x
  	select HAVE_CACHE_SPLIT
  	select HAVE_IPSBAR
  	select GENERIC_CLOCKEVENTS
  	help
  	  Freescale (Motorola) ColdFire 5274/5275 processor support.
  
  config M528x
  	bool "MCF528x"
  	depends on !MMU

  	select GENERIC_CLOCKEVENTS
  	select HAVE_CACHE_SPLIT
  	select HAVE_IPSBAR
  	help
  	  Motorola ColdFire 5280/5282 processor support.
  
  config M5307
  	bool "MCF5307"
  	depends on !MMU

  	select COLDFIRE_SW_A7
  	select HAVE_CACHE_CB
  	select HAVE_MBAR

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  Motorola ColdFire 5307 processor support.
  
  config M532x
  	bool "MCF532x"
  	depends on !MMU

  	select M53xx

  	select HAVE_CACHE_CB
  	help
  	  Freescale (Motorola) ColdFire 532x processor support.

  config M537x
  	bool "MCF537x"
  	depends on !MMU
  	select M53xx
  	select HAVE_CACHE_CB
  	help
  	  Freescale ColdFire 537x processor support.

  config M5407
  	bool "MCF5407"
  	depends on !MMU

  	select COLDFIRE_SW_A7
  	select HAVE_CACHE_CB
  	select HAVE_MBAR

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  Motorola ColdFire 5407 processor support.

  config M547x
  	bool "MCF547x"

  	select M54xx

  	select MMU_COLDFIRE if MMU

  	select FPU if MMU

  	select HAVE_CACHE_CB
  	select HAVE_MBAR

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support.
  
  config M548x
  	bool "MCF548x"

  	select MMU_COLDFIRE if MMU

  	select FPU if MMU

  	select M54xx
  	select HAVE_CACHE_CB
  	select HAVE_MBAR

  	select CPU_NO_EFFICIENT_FFS

  	help
  	  Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support.

  config M5441x
  	bool "MCF5441x"

  	select MMU_COLDFIRE if MMU

  	select GENERIC_CLOCKEVENTS
  	select HAVE_CACHE_CB
  	help
  	  Freescale Coldfire 54410/54415/54416/54417/54418 processor support.

  endchoice
  
  config M527x
  	bool
  
  config M53xx
  	bool
  
  config M54xx

  	select HAVE_PCI

  	bool

  endif # COLDFIRE

  
  comment "Processor Specific Options"
  
  config M68KFPU_EMU

  	bool "Math emulation support"

  	depends on MMU

  	help
  	  At some point in the future, this will cause floating-point math
  	  instructions to be emulated by the kernel on machines that lack a
  	  floating-point math coprocessor.  Thrill-seekers and chronically
  	  sleep-deprived psychotic hacker types can say Y now, everyone else
  	  should probably wait a while.
  
  config M68KFPU_EMU_EXTRAPREC
  	bool "Math emulation extra precision"
  	depends on M68KFPU_EMU
  	help
  	  The fpu uses normally a few bit more during calculations for
  	  correct rounding, the emulator can (often) do the same but this
  	  extra calculation can cost quite some time, so you can disable
  	  it here. The emulator will then "only" calculate with a 64 bit
  	  mantissa and round slightly incorrect, what is more than enough
  	  for normal usage.
  
  config M68KFPU_EMU_ONLY
  	bool "Math emulation only kernel"
  	depends on M68KFPU_EMU
  	help
  	  This option prevents any floating-point instructions from being
  	  compiled into the kernel, thereby the kernel doesn't save any
  	  floating point context anymore during task switches, so this
  	  kernel will only be usable on machines without a floating-point
  	  math coprocessor. This makes the kernel a bit faster as no tests
  	  needs to be executed whether a floating-point instruction in the
  	  kernel should be executed or not.
  
  config ADVANCED
  	bool "Advanced configuration options"
  	depends on MMU

  	help

  	  This gives you access to some advanced options for the CPU. The
  	  defaults should be fine for most users, but these options may make
  	  it possible for you to improve performance somewhat if you know what
  	  you are doing.
  
  	  Note that the answer to this question won't directly affect the
  	  kernel: saying N will just cause the configurator to skip all
  	  the questions about these options.
  
  	  Most users should say N to this question.
  
  config RMW_INSNS
  	bool "Use read-modify-write instructions"
  	depends on ADVANCED

  	help

  	  This allows to use certain instructions that work with indivisible
  	  read-modify-write bus cycles. While this is faster than the
  	  workaround of disabling interrupts, it can conflict with DMA
  	  ( = direct memory access) on many Amiga systems, and it is also said
  	  to destabilize other machines. It is very likely that this will
  	  cause serious problems on any Amiga or Atari Medusa if set. The only
  	  configuration where it should work are 68030-based Ataris, where it
  	  apparently improves performance. But you've been warned! Unless you
  	  really know what you are doing, say N. Try Y only if you're quite
  	  adventurous.
  
  config SINGLE_MEMORY_CHUNK
  	bool "Use one physical chunk of memory only" if ADVANCED && !SUN3
  	depends on MMU
  	default y if SUN3
  	select NEED_MULTIPLE_NODES
  	help
  	  Ignore all but the first contiguous chunk of physical memory for VM
  	  purposes.  This will save a few bytes kernel size and may speed up
  	  some operations.  Say N if not sure.
  
  config ARCH_DISCONTIGMEM_ENABLE
  	def_bool MMU && !SINGLE_MEMORY_CHUNK
  
  config 060_WRITETHROUGH
  	bool "Use write-through caching for 68060 supervisor accesses"
  	depends on ADVANCED && M68060

  	help

  	  The 68060 generally uses copyback caching of recently accessed data.
  	  Copyback caching means that memory writes will be held in an on-chip
  	  cache and only written back to memory some time later.  Saying Y
  	  here will force supervisor (kernel) accesses to use writethrough
  	  caching.  Writethrough caching means that data is written to memory
  	  straight away, so that cache and memory data always agree.
  	  Writethrough caching is less efficient, but is needed for some
  	  drivers on 68060 based systems where the 68060 bus snooping signal
  	  is hardwired on.  The 53c710 SCSI driver is known to suffer from
  	  this problem.
  
  config M68K_L2_CACHE
  	bool
  	depends on MAC
  	default y
  
  config NODES_SHIFT
  	int
  	default "3"
  	depends on !SINGLE_MEMORY_CHUNK

  config CPU_HAS_NO_BITFIELDS
  	bool
  
  config CPU_HAS_NO_MULDIV64
  	bool

  config CPU_HAS_NO_UNALIGNED
  	bool

  config CPU_HAS_ADDRESS_SPACES
  	bool

  config FPU
  	bool
  
  config COLDFIRE_SW_A7
  	bool
  
  config HAVE_CACHE_SPLIT
  	bool
  
  config HAVE_CACHE_CB
  	bool
  
  config HAVE_MBAR
  	bool
  
  config HAVE_IPSBAR
  	bool

  config CLOCK_FREQ
  	int "Set the core clock frequency"

  	default "25000000" if M5206
  	default "54000000" if M5206e
  	default "166666666" if M520x
  	default "140000000" if M5249
  	default "150000000" if M527x || M523x
  	default "90000000" if M5307
  	default "50000000" if M5407
  	default "266000000" if M54xx

  	default "66666666"

  	depends on COLDFIRE

  	help
  	  Define the CPU clock frequency in use. This is the core clock
  	  frequency, it may or may not be the same as the external clock
  	  crystal fitted to your board. Some processors have an internal
  	  PLL and can have their frequency programmed at run time, others
  	  use internal dividers. In general the kernel won't setup a PLL
  	  if it is fitted (there are some exceptions). This value will be
  	  specific to the exact CPU that you are using.
  
  config OLDMASK
  	bool "Old mask 5307 (1H55J) silicon"
  	depends on M5307
  	help
  	  Build support for the older revision ColdFire 5307 silicon.
  	  Specifically this is the 1H55J mask revision.
  
  if HAVE_CACHE_SPLIT
  choice
  	prompt "Split Cache Configuration"
  	default CACHE_I
  
  config CACHE_I
  	bool "Instruction"
  	help
  	  Use all of the ColdFire CPU cache memory as an instruction cache.
  
  config CACHE_D
  	bool "Data"
  	help
  	  Use all of the ColdFire CPU cache memory as a data cache.
  
  config CACHE_BOTH
  	bool "Both"
  	help
  	  Split the ColdFire CPU cache, and use half as an instruction cache
  	  and half as a data cache.
  endchoice
  endif
  
  if HAVE_CACHE_CB
  choice
  	prompt "Data cache mode"
  	default CACHE_WRITETHRU
  
  config CACHE_WRITETHRU
  	bool "Write-through"
  	help
  	  The ColdFire CPU cache is set into Write-through mode.
  
  config CACHE_COPYBACK
  	bool "Copy-back"
  	help
  	  The ColdFire CPU cache is set into Copy-back mode.
  endchoice
  endif