1# SPDX-License-Identifier: GPL-2.0
  2
  3config PPC_DISABLE_WERROR
  4	bool "Don't build arch/powerpc code with -Werror"
  5	help
  6	  This option tells the compiler NOT to build the code under
  7	  arch/powerpc with the -Werror flag (which means warnings
  8	  are treated as errors).
  9
 10	  Only enable this if you are hitting a build failure in the
 11	  arch/powerpc code caused by a warning, and you don't feel
 12	  inclined to fix it.
 13
 14config PPC_WERROR
 15	bool
 16	depends on !PPC_DISABLE_WERROR
 17	default y
 18
 19config PRINT_STACK_DEPTH
 20	int "Stack depth to print" if DEBUG_KERNEL
 21	default 64
 22	help
 23	  This option allows you to set the stack depth that the kernel
 24	  prints in stack traces. This can be useful if your display is
 25	  too small and stack traces cause important information to
 26	  scroll off the screen.
 27
 28config HCALL_STATS
 29	bool "Hypervisor call instrumentation"
 30	depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
 31	help
 32	  Adds code to keep track of the number of hypervisor calls made and
 33	  the amount of time spent in hypervisor calls.  Wall time spent in
 34	  each call is always calculated, and if available CPU cycles spent
 35	  are also calculated.  A directory named hcall_inst is added at the
 36	  root of the debugfs filesystem.  Within the hcall_inst directory
 37	  are files that contain CPU specific call statistics.
 38
 39	  This option will add a small amount of overhead to all hypervisor
 40	  calls.
 41
 42config PPC_EMULATED_STATS
 43	bool "Emulated instructions tracking"
 44	depends on DEBUG_FS
 45	help
 46	  Adds code to keep track of the number of instructions that are
 47	  emulated by the in-kernel emulator. Counters for the various classes
 48	  of emulated instructions are available under
 49	  powerpc/emulated_instructions/ in the root of the debugfs file
 50	  system. Optionally (controlled by
 51	  powerpc/emulated_instructions/do_warn in debugfs), rate-limited
 52	  warnings can be printed to the console when instructions are
 53	  emulated.
 54
 55config CODE_PATCHING_SELFTEST
 56	bool "Run self-tests of the code-patching code"
 57	depends on DEBUG_KERNEL
 58
 59config JUMP_LABEL_FEATURE_CHECKS
 60	bool "Enable use of jump label for cpu/mmu_has_feature()"
 61	depends on JUMP_LABEL
 62	default y
 63	help
 64	  Selecting this options enables use of jump labels for some internal
 65	  feature checks. This should generate more optimal code for those
 66	  checks.
 67
 68config JUMP_LABEL_FEATURE_CHECK_DEBUG
 69	bool "Do extra check on feature fixup calls"
 70	depends on DEBUG_KERNEL && JUMP_LABEL_FEATURE_CHECKS
 71	help
 72	  This tries to catch incorrect usage of cpu_has_feature() and
 73	  mmu_has_feature() in the code.
 74
 75	  If you don't know what this means, say N.
 76
 77config FTR_FIXUP_SELFTEST
 78	bool "Run self-tests of the feature-fixup code"
 79	depends on DEBUG_KERNEL
 80
 81config MSI_BITMAP_SELFTEST
 82	bool "Run self-tests of the MSI bitmap code"
 83	depends on DEBUG_KERNEL
 84
 85config GUEST_STATE_BUFFER_TEST
 86	def_tristate n
 87	prompt "Enable Guest State Buffer unit tests"
 88	depends on KUNIT
 89	depends on KVM_BOOK3S_HV_POSSIBLE
 90	default KUNIT_ALL_TESTS
 91	help
 92	  The Guest State Buffer is a data format specified in the PAPR.
 93	  It is by hcalls to communicate the state of L2 guests between
 94	  the L1 and L0 hypervisors. Enable unit tests for the library
 95	  used to create and use guest state buffers.
 96
 97config PPC_IRQ_SOFT_MASK_DEBUG
 98	bool "Include extra checks for powerpc irq soft masking"
 99	depends on PPC64
100
101config PPC_RFI_SRR_DEBUG
102	bool "Include extra checks for RFI SRR register validity"
103	depends on PPC_BOOK3S_64
104
105config XMON
106	bool "Include xmon kernel debugger"
107	depends on DEBUG_KERNEL
108	select CONSOLE_POLL if SERIAL_CPM_CONSOLE
109	help
110	  Include in-kernel hooks for the xmon kernel monitor/debugger.
111	  Unless you are intending to debug the kernel, say N here.
112	  Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
113	  nothing will appear on the screen (xmon writes directly to the
114	  framebuffer memory).
115	  The cmdline option 'xmon' or 'xmon=early' will drop into xmon
116	  very early during boot. 'xmon=on' will just enable the xmon
117	  debugger hooks.  'xmon=off' will disable the debugger hooks
118	  if CONFIG_XMON_DEFAULT is set.
119	  xmon will print a backtrace on the very first invocation.
120	  'xmon=nobt' will disable this autobacktrace.
121
122config XMON_DEFAULT
123	bool "Enable xmon by default"
124	depends on XMON
125	help
126	  xmon is normally disabled unless booted with 'xmon=on'.
127	  Use 'xmon=off' to disable xmon init during runtime.
128
129config XMON_DISASSEMBLY
130	bool "Include disassembly support in xmon"
131	depends on XMON
132	default y
133	help
134	  Include support for disassembling in xmon. You probably want
135	  to say Y here, unless you're building for a memory-constrained
136	  system.
137
138config XMON_DEFAULT_RO_MODE
139	bool "Restrict xmon to read-only operations by default"
140	depends on XMON
141	default y
142	help
143	  Operate xmon in read-only mode. The cmdline options 'xmon=rw' and
144	  'xmon=ro' override this default.
145
146config DEBUGGER
147	bool
148	depends on KGDB || XMON
149	default y
150
151config BDI_SWITCH
152	bool "Include BDI-2000 user context switcher"
153	depends on DEBUG_KERNEL && PPC32
154	help
155	  Include in-kernel support for the Abatron BDI2000 debugger.
156	  Unless you are intending to debug the kernel with one of these
157	  machines, say N here.
158
159config BOOTX_TEXT
160	bool "Support for early boot text console (BootX or OpenFirmware only)"
161	depends on PPC_BOOK3S
162	select FONT_SUN8x16
163	select FONT_SUPPORT
164	help
165	  Say Y here to see progress messages from the boot firmware in text
166	  mode. Requires either BootX or Open Firmware.
167
168config PPC_EARLY_DEBUG
169	bool "Early debugging (dangerous)"
170	help
171	  Say Y to enable some early debugging facilities that may be available
172	  for your processor/board combination. Those facilities are hacks
173	  intended to debug problems early during boot, this should not be
174	  enabled in a production kernel.
175	  Note that enabling this will also cause the kernel default log level
176	  to be pushed to max automatically very early during boot
177
178choice
179	prompt "Early debugging console"
180	depends on PPC_EARLY_DEBUG
181	help
182	  Use the selected console for early debugging. Careful, if you
183	  enable debugging for the wrong type of machine your kernel
184	  _will not boot_.
185
186config PPC_EARLY_DEBUG_BOOTX
187	bool "BootX or OpenFirmware"
188	depends on BOOTX_TEXT
189	help
190	  Select this to enable early debugging for a machine using BootX
191	  or OpenFirmware.
192
193config PPC_EARLY_DEBUG_LPAR
194	bool "LPAR HV Console"
195	depends on PPC_PSERIES && HVC_CONSOLE
196	help
197	  Select this to enable early debugging for a machine with a HVC
198	  console on vterm 0.
199
200config PPC_EARLY_DEBUG_LPAR_HVSI
201	bool "LPAR HVSI Console"
202	depends on PPC_PSERIES && HVC_CONSOLE
203	help
204	  Select this to enable early debugging for a machine with a HVSI
205	  console on a specified vterm.
206
207config PPC_EARLY_DEBUG_G5
208	bool "Apple G5"
209	depends on PPC_PMAC64
210	help
211	  Select this to enable early debugging for Apple G5 machines.
212
213config PPC_EARLY_DEBUG_RTAS_PANEL
214	bool "RTAS Panel"
215	depends on PPC_RTAS
216	help
217	  Select this to enable early debugging via the RTAS panel.
218
219config PPC_EARLY_DEBUG_RTAS_CONSOLE
220	bool "RTAS Console"
221	depends on PPC_RTAS
222	select UDBG_RTAS_CONSOLE
223	help
224	  Select this to enable early debugging via the RTAS console.
225
226config PPC_EARLY_DEBUG_MAPLE
227	bool "Maple real mode"
228	depends on PPC_MAPLE
229	help
230	  Select this to enable early debugging for Maple.
231
232config PPC_EARLY_DEBUG_PAS_REALMODE
233	bool "PA Semi real mode"
234	depends on PPC_PASEMI
235	help
236	  Select this to enable early debugging for PA Semi.
237	  Output will be on UART0.
238
239config PPC_EARLY_DEBUG_44x
240	bool "Early serial debugging for IBM/AMCC 44x CPUs"
241	depends on 44x
242	help
243	  Select this to enable early debugging for IBM 44x chips via the
244	  inbuilt serial port.  If you enable this, ensure you set
245	  PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
246
247config PPC_EARLY_DEBUG_40x
248	bool "Early serial debugging for IBM/AMCC 40x CPUs"
249	depends on 40x
250	help
251	  Select this to enable early debugging for IBM 40x chips via the
252	  inbuilt serial port. This works on chips with a 16550 compatible
253	  UART.
254
255config PPC_EARLY_DEBUG_CPM
256	bool "Early serial debugging for Freescale CPM-based serial ports"
257	depends on SERIAL_CPM=y
258	help
259	  Select this to enable early debugging for Freescale chips
260	  using a CPM-based serial port.  This assumes that the bootwrapper
261	  has run, and set up the CPM in a particular way.
262
263config PPC_EARLY_DEBUG_USBGECKO
264	bool "Early debugging through the USB Gecko adapter"
265	depends on GAMECUBE_COMMON
266	select USBGECKO_UDBG
267	help
268	  Select this to enable early debugging for Nintendo GameCube/Wii
269	  consoles via an external USB Gecko adapter.
270
271config PPC_EARLY_DEBUG_PS3GELIC
272	bool "Early debugging through the PS3 Ethernet port"
273	depends on PPC_PS3
 
274	help
275	  Select this to enable early debugging for the PlayStation3 via
276	  UDP broadcasts sent out through the Ethernet port.
277
278config PPC_EARLY_DEBUG_OPAL_RAW
279	bool "OPAL raw console"
280	depends on HVC_OPAL
281	help
282	  Select this to enable early debugging for the PowerNV platform
283	  using a "raw" console
284
285config PPC_EARLY_DEBUG_OPAL_HVSI
286	bool "OPAL hvsi console"
287	depends on HVC_OPAL
288	help
289	  Select this to enable early debugging for the PowerNV platform
290	  using an "hvsi" console
291
292config PPC_EARLY_DEBUG_MEMCONS
293	bool "In memory console"
294	help
295	  Select this to enable early debugging using an in memory console.
296	  This console provides input and output buffers stored within the
297	  kernel BSS and should be safe to select on any system. A debugger
298	  can then be used to read kernel output or send input to the console.
299
300config PPC_EARLY_DEBUG_16550
301	bool "Serial 16550"
302	depends on PPC_UDBG_16550
303	help
304	  Select this to enable early debugging via Serial 16550 console
305endchoice
306
307config PPC_MEMCONS_OUTPUT_SIZE
308	int "In memory console output buffer size"
309	depends on PPC_EARLY_DEBUG_MEMCONS
310	default 4096
311	help
312	  Selects the size of the output buffer (in bytes) of the in memory
313	  console.
314
315config PPC_MEMCONS_INPUT_SIZE
316	int "In memory console input buffer size"
317	depends on PPC_EARLY_DEBUG_MEMCONS
318	default 128
319	help
320	  Selects the size of the input buffer (in bytes) of the in memory
321	  console.
322
323config PPC_EARLY_DEBUG_OPAL
324	def_bool y
325	depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
326
 
327config PPC_EARLY_DEBUG_HVSI_VTERMNO
328	hex "vterm number to use with early debug HVSI"
329	depends on PPC_EARLY_DEBUG_LPAR_HVSI
330	default "0x30000000"
331	help
332	  You probably want 0x30000000 for your first serial port and
333	  0x30000001 for your second one
334
335config PPC_EARLY_DEBUG_OPAL_VTERMNO
336	hex "vterm number to use with OPAL early debug"
337	depends on PPC_EARLY_DEBUG_OPAL
338	default "0"
339	help
340	  This correspond to which /dev/hvcN you want to use for early
341	  debug.
342
343	  On OPAL v2, this will be 0 for network console and 1 or 2 for
344	  the machine built-in serial ports.
345
346config PPC_EARLY_DEBUG_44x_PHYSLOW
347	hex "Low 32 bits of early debug UART physical address"
348	depends on PPC_EARLY_DEBUG_44x
349	default "0x40000200"
350	help
351	  You probably want 0x40000200 for ebony boards and
352	  0x40000300 for taishan
353
354config PPC_EARLY_DEBUG_44x_PHYSHIGH
355	hex "EPRN of early debug UART physical address"
356	depends on PPC_EARLY_DEBUG_44x
357	default "0x1"
358
359config PPC_EARLY_DEBUG_40x_PHYSADDR
360	hex "Early debug UART physical address"
361	depends on PPC_EARLY_DEBUG_40x
362	default "0xef600300"
363
364config PPC_EARLY_DEBUG_CPM_ADDR
365	hex "CPM UART early debug transmit descriptor address"
366	depends on PPC_EARLY_DEBUG_CPM
367	default "0xfa202008" if PPC_EP88XC
368	default "0xf0001ff8" if CPM2
369	default "0xff002008" if CPM1
370	help
371	  This specifies the address of the transmit descriptor
372	  used for early debug output.  Because it is needed before
373	  platform probing is done, all platforms selected must
374	  share the same address.
375
376config PPC_EARLY_DEBUG_16550_PHYSADDR
377	hex "Early debug Serial 16550 physical address"
378	depends on PPC_EARLY_DEBUG_16550
379
380config PPC_EARLY_DEBUG_16550_STRIDE
381	int "Early debug Serial 16550 stride"
382	depends on PPC_EARLY_DEBUG_16550
383	default 1
384
385config FAIL_IOMMU
386	bool "Fault-injection capability for IOMMU"
387	depends on FAULT_INJECTION
388	depends on PCI || IBMVIO
389	help
390	  Provide fault-injection capability for IOMMU. Each device can
391	  be selectively enabled via the fail_iommu property.
392
393	  If you are unsure, say N.
394
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
395config PPC_FAST_ENDIAN_SWITCH
396	bool "Deprecated fast endian-switch syscall"
397	depends on DEBUG_KERNEL && PPC_BOOK3S_64
398	help
399	  If you're unsure what this is, say N.
400
401config KASAN_SHADOW_OFFSET
402	hex
403	depends on KASAN
404	default 0xe0000000 if PPC32
405	default 0xa80e000000000000 if PPC_BOOK3S_64
406	default 0xa8001c0000000000 if PPC_BOOK3E_64

  1# SPDX-License-Identifier: GPL-2.0
  2
  3config PPC_DISABLE_WERROR
  4	bool "Don't build arch/powerpc code with -Werror"
  5	help
  6	  This option tells the compiler NOT to build the code under
  7	  arch/powerpc with the -Werror flag (which means warnings
  8	  are treated as errors).
  9
 10	  Only enable this if you are hitting a build failure in the
 11	  arch/powerpc code caused by a warning, and you don't feel
 12	  inclined to fix it.
 13
 14config PPC_WERROR
 15	bool
 16	depends on !PPC_DISABLE_WERROR
 17	default y
 18
 19config PRINT_STACK_DEPTH
 20	int "Stack depth to print" if DEBUG_KERNEL
 21	default 64
 22	help
 23	  This option allows you to set the stack depth that the kernel
 24	  prints in stack traces. This can be useful if your display is
 25	  too small and stack traces cause important information to
 26	  scroll off the screen.
 27
 28config HCALL_STATS
 29	bool "Hypervisor call instrumentation"
 30	depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
 31	help
 32	  Adds code to keep track of the number of hypervisor calls made and
 33	  the amount of time spent in hypervisor calls.  Wall time spent in
 34	  each call is always calculated, and if available CPU cycles spent
 35	  are also calculated.  A directory named hcall_inst is added at the
 36	  root of the debugfs filesystem.  Within the hcall_inst directory
 37	  are files that contain CPU specific call statistics.
 38
 39	  This option will add a small amount of overhead to all hypervisor
 40	  calls.
 41
 42config PPC_EMULATED_STATS
 43	bool "Emulated instructions tracking"
 44	depends on DEBUG_FS
 45	help
 46	  Adds code to keep track of the number of instructions that are
 47	  emulated by the in-kernel emulator. Counters for the various classes
 48	  of emulated instructions are available under
 49	  powerpc/emulated_instructions/ in the root of the debugfs file
 50	  system. Optionally (controlled by
 51	  powerpc/emulated_instructions/do_warn in debugfs), rate-limited
 52	  warnings can be printed to the console when instructions are
 53	  emulated.
 54
 55config CODE_PATCHING_SELFTEST
 56	bool "Run self-tests of the code-patching code"
 57	depends on DEBUG_KERNEL
 58
 59config JUMP_LABEL_FEATURE_CHECKS
 60	bool "Enable use of jump label for cpu/mmu_has_feature()"
 61	depends on JUMP_LABEL
 62	default y
 63	help
 64	  Selecting this options enables use of jump labels for some internal
 65	  feature checks. This should generate more optimal code for those
 66	  checks.
 67
 68config JUMP_LABEL_FEATURE_CHECK_DEBUG
 69	bool "Do extra check on feature fixup calls"
 70	depends on DEBUG_KERNEL && JUMP_LABEL_FEATURE_CHECKS
 71	help
 72	  This tries to catch incorrect usage of cpu_has_feature() and
 73	  mmu_has_feature() in the code.
 74
 75	  If you don't know what this means, say N.
 76
 77config FTR_FIXUP_SELFTEST
 78	bool "Run self-tests of the feature-fixup code"
 79	depends on DEBUG_KERNEL
 80
 81config MSI_BITMAP_SELFTEST
 82	bool "Run self-tests of the MSI bitmap code"
 83	depends on DEBUG_KERNEL
 84
 
 
 
 
 
 
 
 
 
 
 
 
 85config PPC_IRQ_SOFT_MASK_DEBUG
 86	bool "Include extra checks for powerpc irq soft masking"
 
 
 
 
 
 87
 88config XMON
 89	bool "Include xmon kernel debugger"
 90	depends on DEBUG_KERNEL
 
 91	help
 92	  Include in-kernel hooks for the xmon kernel monitor/debugger.
 93	  Unless you are intending to debug the kernel, say N here.
 94	  Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
 95	  nothing will appear on the screen (xmon writes directly to the
 96	  framebuffer memory).
 97	  The cmdline option 'xmon' or 'xmon=early' will drop into xmon
 98	  very early during boot. 'xmon=on' will just enable the xmon
 99	  debugger hooks.  'xmon=off' will disable the debugger hooks
100	  if CONFIG_XMON_DEFAULT is set.
101	  xmon will print a backtrace on the very first invocation.
102	  'xmon=nobt' will disable this autobacktrace.
103
104config XMON_DEFAULT
105	bool "Enable xmon by default"
106	depends on XMON
107	help
108	  xmon is normally disabled unless booted with 'xmon=on'.
109	  Use 'xmon=off' to disable xmon init during runtime.
110
111config XMON_DISASSEMBLY
112	bool "Include disassembly support in xmon"
113	depends on XMON
114	default y
115	help
116	  Include support for disassembling in xmon. You probably want
117	  to say Y here, unless you're building for a memory-constrained
118	  system.
119
120config XMON_DEFAULT_RO_MODE
121	bool "Restrict xmon to read-only operations by default"
122	depends on XMON
123	default y
124	help
125          Operate xmon in read-only mode. The cmdline options 'xmon=rw' and
126          'xmon=ro' override this default.
127
128config DEBUGGER
129	bool
130	depends on KGDB || XMON
131	default y
132
133config BDI_SWITCH
134	bool "Include BDI-2000 user context switcher"
135	depends on DEBUG_KERNEL && PPC32
136	help
137	  Include in-kernel support for the Abatron BDI2000 debugger.
138	  Unless you are intending to debug the kernel with one of these
139	  machines, say N here.
140
141config BOOTX_TEXT
142	bool "Support for early boot text console (BootX or OpenFirmware only)"
143	depends on PPC_BOOK3S
 
 
144	help
145	  Say Y here to see progress messages from the boot firmware in text
146	  mode. Requires either BootX or Open Firmware.
147
148config PPC_EARLY_DEBUG
149	bool "Early debugging (dangerous)"
150	help
151	  Say Y to enable some early debugging facilities that may be available
152	  for your processor/board combination. Those facilities are hacks
153	  intended to debug problems early during boot, this should not be
154	  enabled in a production kernel.
155	  Note that enabling this will also cause the kernel default log level
156	  to be pushed to max automatically very early during boot
157
158choice
159	prompt "Early debugging console"
160	depends on PPC_EARLY_DEBUG
161	help
162	  Use the selected console for early debugging. Careful, if you
163	  enable debugging for the wrong type of machine your kernel
164	  _will not boot_.
165
166config PPC_EARLY_DEBUG_BOOTX
167	bool "BootX or OpenFirmware"
168	depends on BOOTX_TEXT
169	help
170	  Select this to enable early debugging for a machine using BootX
171	  or OpenFirmware.
172
173config PPC_EARLY_DEBUG_LPAR
174	bool "LPAR HV Console"
175	depends on PPC_PSERIES && HVC_CONSOLE
176	help
177	  Select this to enable early debugging for a machine with a HVC
178	  console on vterm 0.
179
180config PPC_EARLY_DEBUG_LPAR_HVSI
181	bool "LPAR HVSI Console"
182	depends on PPC_PSERIES && HVC_CONSOLE
183	help
184	  Select this to enable early debugging for a machine with a HVSI
185	  console on a specified vterm.
186
187config PPC_EARLY_DEBUG_G5
188	bool "Apple G5"
189	depends on PPC_PMAC64
190	help
191	  Select this to enable early debugging for Apple G5 machines.
192
193config PPC_EARLY_DEBUG_RTAS_PANEL
194	bool "RTAS Panel"
195	depends on PPC_RTAS
196	help
197	  Select this to enable early debugging via the RTAS panel.
198
199config PPC_EARLY_DEBUG_RTAS_CONSOLE
200	bool "RTAS Console"
201	depends on PPC_RTAS
202	select UDBG_RTAS_CONSOLE
203	help
204	  Select this to enable early debugging via the RTAS console.
205
206config PPC_EARLY_DEBUG_MAPLE
207	bool "Maple real mode"
208	depends on PPC_MAPLE
209	help
210	  Select this to enable early debugging for Maple.
211
212config PPC_EARLY_DEBUG_PAS_REALMODE
213	bool "PA Semi real mode"
214	depends on PPC_PASEMI
215	help
216	  Select this to enable early debugging for PA Semi.
217	  Output will be on UART0.
218
219config PPC_EARLY_DEBUG_44x
220	bool "Early serial debugging for IBM/AMCC 44x CPUs"
221	depends on 44x
222	help
223	  Select this to enable early debugging for IBM 44x chips via the
224	  inbuilt serial port.  If you enable this, ensure you set
225          PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
226
227config PPC_EARLY_DEBUG_40x
228	bool "Early serial debugging for IBM/AMCC 40x CPUs"
229	depends on 40x
230	help
231	  Select this to enable early debugging for IBM 40x chips via the
232	  inbuilt serial port. This works on chips with a 16550 compatible
233	  UART. Xilinx chips with uartlite cannot use this option.
234
235config PPC_EARLY_DEBUG_CPM
236	bool "Early serial debugging for Freescale CPM-based serial ports"
237	depends on SERIAL_CPM
238	help
239	  Select this to enable early debugging for Freescale chips
240	  using a CPM-based serial port.  This assumes that the bootwrapper
241	  has run, and set up the CPM in a particular way.
242
243config PPC_EARLY_DEBUG_USBGECKO
244	bool "Early debugging through the USB Gecko adapter"
245	depends on GAMECUBE_COMMON
246	select USBGECKO_UDBG
247	help
248	  Select this to enable early debugging for Nintendo GameCube/Wii
249	  consoles via an external USB Gecko adapter.
250
251config PPC_EARLY_DEBUG_PS3GELIC
252	bool "Early debugging through the PS3 Ethernet port"
253	depends on PPC_PS3
254	select PS3GELIC_UDBG
255	help
256	  Select this to enable early debugging for the PlayStation3 via
257	  UDP broadcasts sent out through the Ethernet port.
258
259config PPC_EARLY_DEBUG_OPAL_RAW
260	bool "OPAL raw console"
261	depends on HVC_OPAL
262	help
263	  Select this to enable early debugging for the PowerNV platform
264	  using a "raw" console
265
266config PPC_EARLY_DEBUG_OPAL_HVSI
267	bool "OPAL hvsi console"
268	depends on HVC_OPAL
269	help
270	  Select this to enable early debugging for the PowerNV platform
271	  using an "hvsi" console
272
273config PPC_EARLY_DEBUG_MEMCONS
274	bool "In memory console"
275	help
276	  Select this to enable early debugging using an in memory console.
277	  This console provides input and output buffers stored within the
278	  kernel BSS and should be safe to select on any system. A debugger
279	  can then be used to read kernel output or send input to the console.
 
 
 
 
 
 
280endchoice
281
282config PPC_MEMCONS_OUTPUT_SIZE
283	int "In memory console output buffer size"
284	depends on PPC_EARLY_DEBUG_MEMCONS
285	default 4096
286	help
287	  Selects the size of the output buffer (in bytes) of the in memory
288	  console.
289
290config PPC_MEMCONS_INPUT_SIZE
291	int "In memory console input buffer size"
292	depends on PPC_EARLY_DEBUG_MEMCONS
293	default 128
294	help
295	  Selects the size of the input buffer (in bytes) of the in memory
296	  console.
297
298config PPC_EARLY_DEBUG_OPAL
299	def_bool y
300	depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
301
302
303config PPC_EARLY_DEBUG_HVSI_VTERMNO
304	hex "vterm number to use with early debug HVSI"
305	depends on PPC_EARLY_DEBUG_LPAR_HVSI
306	default "0x30000000"
307	help
308	  You probably want 0x30000000 for your first serial port and
309	  0x30000001 for your second one
310
311config PPC_EARLY_DEBUG_OPAL_VTERMNO
312	hex "vterm number to use with OPAL early debug"
313	depends on PPC_EARLY_DEBUG_OPAL
314	default "0"
315	help
316	  This correspond to which /dev/hvcN you want to use for early
317	  debug.
318
319	  On OPAL v2, this will be 0 for network console and 1 or 2 for
320	  the machine built-in serial ports.
321
322config PPC_EARLY_DEBUG_44x_PHYSLOW
323	hex "Low 32 bits of early debug UART physical address"
324	depends on PPC_EARLY_DEBUG_44x
325	default "0x40000200"
326	help
327	  You probably want 0x40000200 for ebony boards and
328          0x40000300 for taishan
329
330config PPC_EARLY_DEBUG_44x_PHYSHIGH
331	hex "EPRN of early debug UART physical address"
332	depends on PPC_EARLY_DEBUG_44x
333	default "0x1"
334
335config PPC_EARLY_DEBUG_40x_PHYSADDR
336	hex "Early debug UART physical address"
337	depends on PPC_EARLY_DEBUG_40x
338	default "0xef600300"
339
340config PPC_EARLY_DEBUG_CPM_ADDR
341	hex "CPM UART early debug transmit descriptor address"
342	depends on PPC_EARLY_DEBUG_CPM
343	default "0xfa202008" if PPC_EP88XC
344	default "0xf0001ff8" if CPM2
345	default "0xff002008" if CPM1
346	help
347	  This specifies the address of the transmit descriptor
348	  used for early debug output.  Because it is needed before
349	  platform probing is done, all platforms selected must
350	  share the same address.
351
 
 
 
 
 
 
 
 
 
352config FAIL_IOMMU
353	bool "Fault-injection capability for IOMMU"
354	depends on FAULT_INJECTION
 
355	help
356	  Provide fault-injection capability for IOMMU. Each device can
357	  be selectively enabled via the fail_iommu property.
358
359	  If you are unsure, say N.
360
361config PPC_PTDUMP
362        bool "Export kernel pagetable layout to userspace via debugfs"
363        depends on DEBUG_KERNEL && DEBUG_FS
364        help
365	  This option exports the state of the kernel pagetables to a
366	  debugfs file. This is only useful for kernel developers who are
367	  working in architecture specific areas of the kernel - probably
368	  not a good idea to enable this feature in a production kernel.
369
370	  If you are unsure, say N.
371
372config PPC_DEBUG_WX
373	bool "Warn on W+X mappings at boot"
374	depends on PPC_PTDUMP
375	help
376	  Generate a warning if any W+X mappings are found at boot.
377
378	  This is useful for discovering cases where the kernel is leaving
379	  W+X mappings after applying NX, as such mappings are a security risk.
380
381	  Note that even if the check fails, your kernel is possibly
382	  still fine, as W+X mappings are not a security hole in
383	  themselves, what they do is that they make the exploitation
384	  of other unfixed kernel bugs easier.
385
386	  There is no runtime or memory usage effect of this option
387	  once the kernel has booted up - it's a one time check.
388
389	  If in doubt, say "Y".
390
391config PPC_FAST_ENDIAN_SWITCH
392	bool "Deprecated fast endian-switch syscall"
393        depends on DEBUG_KERNEL && PPC_BOOK3S_64
394        help
395	  If you're unsure what this is, say N.
396
397config KASAN_SHADOW_OFFSET
398	hex
399	depends on KASAN
400	default 0xe0000000