# SPDX-License-Identifier: GPL-2.0

  config PPC_DISABLE_WERROR
  	bool "Don't build arch/powerpc code with -Werror"

  	help
  	  This option tells the compiler NOT to build the code under
  	  arch/powerpc with the -Werror flag (which means warnings
  	  are treated as errors).
  
  	  Only enable this if you are hitting a build failure in the
  	  arch/powerpc code caused by a warning, and you don't feel
  	  inclined to fix it.
  
  config PPC_WERROR
  	bool
  	depends on !PPC_DISABLE_WERROR
  	default y

  config PRINT_STACK_DEPTH
  	int "Stack depth to print" if DEBUG_KERNEL
  	default 64
  	help
  	  This option allows you to set the stack depth that the kernel
  	  prints in stack traces. This can be useful if your display is
  	  too small and stack traces cause important information to
  	  scroll off the screen.

  config HCALL_STATS
  	bool "Hypervisor call instrumentation"

  	depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS

  	help
  	  Adds code to keep track of the number of hypervisor calls made and

  	  the amount of time spent in hypervisor calls.  Wall time spent in

  	  each call is always calculated, and if available CPU cycles spent
  	  are also calculated.  A directory named hcall_inst is added at the
  	  root of the debugfs filesystem.  Within the hcall_inst directory
  	  are files that contain CPU specific call statistics.
  
  	  This option will add a small amount of overhead to all hypervisor
  	  calls.

  config PPC_EMULATED_STATS
  	bool "Emulated instructions tracking"
  	depends on DEBUG_FS
  	help
  	  Adds code to keep track of the number of instructions that are
  	  emulated by the in-kernel emulator. Counters for the various classes
  	  of emulated instructions are available under
  	  powerpc/emulated_instructions/ in the root of the debugfs file
  	  system. Optionally (controlled by
  	  powerpc/emulated_instructions/do_warn in debugfs), rate-limited
  	  warnings can be printed to the console when instructions are
  	  emulated.

  config CODE_PATCHING_SELFTEST

  	bool "Run self-tests of the code-patching code"

  	depends on DEBUG_KERNEL

  config JUMP_LABEL_FEATURE_CHECKS
  	bool "Enable use of jump label for cpu/mmu_has_feature()"
  	depends on JUMP_LABEL
  	default y
  	help
  	  Selecting this options enables use of jump labels for some internal
  	  feature checks. This should generate more optimal code for those
  	  checks.

  config JUMP_LABEL_FEATURE_CHECK_DEBUG
  	bool "Do extra check on feature fixup calls"
  	depends on DEBUG_KERNEL && JUMP_LABEL_FEATURE_CHECKS

  	help
  	  This tries to catch incorrect usage of cpu_has_feature() and
  	  mmu_has_feature() in the code.
  
  	  If you don't know what this means, say N.

  config FTR_FIXUP_SELFTEST

  	bool "Run self-tests of the feature-fixup code"

  	depends on DEBUG_KERNEL

  config MSI_BITMAP_SELFTEST

  	bool "Run self-tests of the MSI bitmap code"

  	depends on DEBUG_KERNEL

  config PPC_IRQ_SOFT_MASK_DEBUG
  	bool "Include extra checks for powerpc irq soft masking"

  config XMON
  	bool "Include xmon kernel debugger"

  	depends on DEBUG_KERNEL

  	help
  	  Include in-kernel hooks for the xmon kernel monitor/debugger.
  	  Unless you are intending to debug the kernel, say N here.

  	  Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
  	  nothing will appear on the screen (xmon writes directly to the
  	  framebuffer memory).
  	  The cmdline option 'xmon' or 'xmon=early' will drop into xmon
  	  very early during boot. 'xmon=on' will just enable the xmon
  	  debugger hooks.  'xmon=off' will disable the debugger hooks
  	  if CONFIG_XMON_DEFAULT is set.

  	  xmon will print a backtrace on the very first invocation.
  	  'xmon=nobt' will disable this autobacktrace.

  
  config XMON_DEFAULT
  	bool "Enable xmon by default"
  	depends on XMON
  	help
  	  xmon is normally disabled unless booted with 'xmon=on'.
  	  Use 'xmon=off' to disable xmon init during runtime.

  config XMON_DISASSEMBLY
  	bool "Include disassembly support in xmon"
  	depends on XMON
  	default y
  	help
  	  Include support for disassembling in xmon. You probably want
  	  to say Y here, unless you're building for a memory-constrained
  	  system.

  config XMON_DEFAULT_RO_MODE
  	bool "Restrict xmon to read-only operations by default"
  	depends on XMON
  	default y
  	help

  	  Operate xmon in read-only mode. The cmdline options 'xmon=rw' and
  	  'xmon=ro' override this default.

  config DEBUGGER
  	bool
  	depends on KGDB || XMON
  	default y

  config BDI_SWITCH
  	bool "Include BDI-2000 user context switcher"

  	depends on DEBUG_KERNEL && PPC32

  	help
  	  Include in-kernel support for the Abatron BDI2000 debugger.
  	  Unless you are intending to debug the kernel with one of these
  	  machines, say N here.
  
  config BOOTX_TEXT
  	bool "Support for early boot text console (BootX or OpenFirmware only)"

  	depends on PPC_BOOK3S

  	help
  	  Say Y here to see progress messages from the boot firmware in text
  	  mode. Requires either BootX or Open Firmware.

  config PPC_EARLY_DEBUG
  	bool "Early debugging (dangerous)"

  	help
  	  Say Y to enable some early debugging facilities that may be available
  	  for your processor/board combination. Those facilities are hacks
  	  intended to debug problems early during boot, this should not be
  	  enabled in a production kernel.
  	  Note that enabling this will also cause the kernel default log level
  	  to be pushed to max automatically very early during boot

  choice

  	prompt "Early debugging console"
  	depends on PPC_EARLY_DEBUG

  	help

  	  Use the selected console for early debugging. Careful, if you
  	  enable debugging for the wrong type of machine your kernel
  	  _will not boot_.

  config PPC_EARLY_DEBUG_BOOTX
  	bool "BootX or OpenFirmware"
  	depends on BOOTX_TEXT
  	help
  	  Select this to enable early debugging for a machine using BootX
  	  or OpenFirmware.

  config PPC_EARLY_DEBUG_LPAR
  	bool "LPAR HV Console"

  	depends on PPC_PSERIES && HVC_CONSOLE

  	help
  	  Select this to enable early debugging for a machine with a HVC
  	  console on vterm 0.

  config PPC_EARLY_DEBUG_LPAR_HVSI
  	bool "LPAR HVSI Console"

  	depends on PPC_PSERIES && HVC_CONSOLE

  	help
  	  Select this to enable early debugging for a machine with a HVSI
  	  console on a specified vterm.

  config PPC_EARLY_DEBUG_G5
  	bool "Apple G5"
  	depends on PPC_PMAC64
  	help
  	  Select this to enable early debugging for Apple G5 machines.

  config PPC_EARLY_DEBUG_RTAS_PANEL

  	bool "RTAS Panel"
  	depends on PPC_RTAS
  	help
  	  Select this to enable early debugging via the RTAS panel.

  config PPC_EARLY_DEBUG_RTAS_CONSOLE
  	bool "RTAS Console"
  	depends on PPC_RTAS
  	select UDBG_RTAS_CONSOLE
  	help
  	  Select this to enable early debugging via the RTAS console.

  config PPC_EARLY_DEBUG_MAPLE
  	bool "Maple real mode"
  	depends on PPC_MAPLE
  	help
  	  Select this to enable early debugging for Maple.

  config PPC_EARLY_DEBUG_PAS_REALMODE
  	bool "PA Semi real mode"
  	depends on PPC_PASEMI
  	help
  	  Select this to enable early debugging for PA Semi.
  	  Output will be on UART0.

  config PPC_EARLY_DEBUG_44x
  	bool "Early serial debugging for IBM/AMCC 44x CPUs"

  	depends on 44x

  	help
  	  Select this to enable early debugging for IBM 44x chips via the

  	  inbuilt serial port.  If you enable this, ensure you set

  	  PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.

  config PPC_EARLY_DEBUG_40x
  	bool "Early serial debugging for IBM/AMCC 40x CPUs"
  	depends on 40x
  	help
  	  Select this to enable early debugging for IBM 40x chips via the
  	  inbuilt serial port. This works on chips with a 16550 compatible

  	  UART.

  config PPC_EARLY_DEBUG_CPM
  	bool "Early serial debugging for Freescale CPM-based serial ports"
  	depends on SERIAL_CPM

  	help
  	  Select this to enable early debugging for Freescale chips
  	  using a CPM-based serial port.  This assumes that the bootwrapper
  	  has run, and set up the CPM in a particular way.

  config PPC_EARLY_DEBUG_USBGECKO
  	bool "Early debugging through the USB Gecko adapter"
  	depends on GAMECUBE_COMMON
  	select USBGECKO_UDBG
  	help
  	  Select this to enable early debugging for Nintendo GameCube/Wii
  	  consoles via an external USB Gecko adapter.

  config PPC_EARLY_DEBUG_PS3GELIC
  	bool "Early debugging through the PS3 Ethernet port"
  	depends on PPC_PS3
  	select PS3GELIC_UDBG
  	help
  	  Select this to enable early debugging for the PlayStation3 via
  	  UDP broadcasts sent out through the Ethernet port.

  config PPC_EARLY_DEBUG_OPAL_RAW
  	bool "OPAL raw console"
  	depends on HVC_OPAL
  	help
  	  Select this to enable early debugging for the PowerNV platform
  	  using a "raw" console
  
  config PPC_EARLY_DEBUG_OPAL_HVSI
  	bool "OPAL hvsi console"
  	depends on HVC_OPAL
  	help
  	  Select this to enable early debugging for the PowerNV platform
  	  using an "hvsi" console

  config PPC_EARLY_DEBUG_MEMCONS
  	bool "In memory console"
  	help
  	  Select this to enable early debugging using an in memory console.
  	  This console provides input and output buffers stored within the
  	  kernel BSS and should be safe to select on any system. A debugger
  	  can then be used to read kernel output or send input to the console.

  endchoice

  config PPC_MEMCONS_OUTPUT_SIZE
  	int "In memory console output buffer size"
  	depends on PPC_EARLY_DEBUG_MEMCONS
  	default 4096
  	help
  	  Selects the size of the output buffer (in bytes) of the in memory
  	  console.
  
  config PPC_MEMCONS_INPUT_SIZE
  	int "In memory console input buffer size"
  	depends on PPC_EARLY_DEBUG_MEMCONS
  	default 128
  	help
  	  Selects the size of the input buffer (in bytes) of the in memory
  	  console.

  config PPC_EARLY_DEBUG_OPAL
  	def_bool y
  	depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI

  config PPC_EARLY_DEBUG_HVSI_VTERMNO
  	hex "vterm number to use with early debug HVSI"
  	depends on PPC_EARLY_DEBUG_LPAR_HVSI
  	default "0x30000000"
  	help
  	  You probably want 0x30000000 for your first serial port and
  	  0x30000001 for your second one

  config PPC_EARLY_DEBUG_OPAL_VTERMNO
  	hex "vterm number to use with OPAL early debug"
  	depends on PPC_EARLY_DEBUG_OPAL
  	default "0"
  	help
  	  This correspond to which /dev/hvcN you want to use for early
  	  debug.

  	  On OPAL v2, this will be 0 for network console and 1 or 2 for
  	  the machine built-in serial ports.

  config PPC_EARLY_DEBUG_44x_PHYSLOW
  	hex "Low 32 bits of early debug UART physical address"

  	depends on PPC_EARLY_DEBUG_44x

  	default "0x40000200"

  	help
  	  You probably want 0x40000200 for ebony boards and

  	  0x40000300 for taishan

  
  config PPC_EARLY_DEBUG_44x_PHYSHIGH
  	hex "EPRN of early debug UART physical address"

  	depends on PPC_EARLY_DEBUG_44x

  	default "0x1"

  config PPC_EARLY_DEBUG_40x_PHYSADDR
  	hex "Early debug UART physical address"
  	depends on PPC_EARLY_DEBUG_40x
  	default "0xef600300"

  config PPC_EARLY_DEBUG_CPM_ADDR
  	hex "CPM UART early debug transmit descriptor address"
  	depends on PPC_EARLY_DEBUG_CPM

  	default "0xfa202008" if PPC_EP88XC

  	default "0xf0001ff8" if CPM2

  	default "0xff002008" if CPM1

  	help
  	  This specifies the address of the transmit descriptor
  	  used for early debug output.  Because it is needed before
  	  platform probing is done, all platforms selected must
  	  share the same address.

  config FAIL_IOMMU
  	bool "Fault-injection capability for IOMMU"
  	depends on FAULT_INJECTION
  	help
  	  Provide fault-injection capability for IOMMU. Each device can
  	  be selectively enabled via the fail_iommu property.
  
  	  If you are unsure, say N.

  config PPC_PTDUMP

  	bool "Export kernel pagetable layout to userspace via debugfs"
  	depends on DEBUG_KERNEL && DEBUG_FS
  	help

  	  This option exports the state of the kernel pagetables to a
  	  debugfs file. This is only useful for kernel developers who are
  	  working in architecture specific areas of the kernel - probably
  	  not a good idea to enable this feature in a production kernel.
  
  	  If you are unsure, say N.

  config PPC_DEBUG_WX
  	bool "Warn on W+X mappings at boot"

  	depends on PPC_PTDUMP && STRICT_KERNEL_RWX

  	help
  	  Generate a warning if any W+X mappings are found at boot.
  
  	  This is useful for discovering cases where the kernel is leaving
  	  W+X mappings after applying NX, as such mappings are a security risk.
  
  	  Note that even if the check fails, your kernel is possibly
  	  still fine, as W+X mappings are not a security hole in
  	  themselves, what they do is that they make the exploitation
  	  of other unfixed kernel bugs easier.
  
  	  There is no runtime or memory usage effect of this option
  	  once the kernel has booted up - it's a one time check.
  
  	  If in doubt, say "Y".

  config PPC_FAST_ENDIAN_SWITCH
  	bool "Deprecated fast endian-switch syscall"

  	depends on DEBUG_KERNEL && PPC_BOOK3S_64
  	help

  	  If you're unsure what this is, say N.

  
  config KASAN_SHADOW_OFFSET
  	hex
  	depends on KASAN
  	default 0xe0000000