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	depends on PPC64
88
89config PPC_RFI_SRR_DEBUG
90	bool "Include extra checks for RFI SRR register validity"
91	depends on PPC_BOOK3S_64
92
93config XMON
94	bool "Include xmon kernel debugger"
95	depends on DEBUG_KERNEL
96	select CONSOLE_POLL if SERIAL_CPM_CONSOLE
97	help
98	  Include in-kernel hooks for the xmon kernel monitor/debugger.
99	  Unless you are intending to debug the kernel, say N here.
100	  Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
101	  nothing will appear on the screen (xmon writes directly to the
102	  framebuffer memory).
103	  The cmdline option 'xmon' or 'xmon=early' will drop into xmon
104	  very early during boot. 'xmon=on' will just enable the xmon
105	  debugger hooks.  'xmon=off' will disable the debugger hooks
106	  if CONFIG_XMON_DEFAULT is set.
107	  xmon will print a backtrace on the very first invocation.
108	  'xmon=nobt' will disable this autobacktrace.
109
110config XMON_DEFAULT
111	bool "Enable xmon by default"
112	depends on XMON
113	help
114	  xmon is normally disabled unless booted with 'xmon=on'.
115	  Use 'xmon=off' to disable xmon init during runtime.
116
117config XMON_DISASSEMBLY
118	bool "Include disassembly support in xmon"
119	depends on XMON
120	default y
121	help
122	  Include support for disassembling in xmon. You probably want
123	  to say Y here, unless you're building for a memory-constrained
124	  system.
125
126config XMON_DEFAULT_RO_MODE
127	bool "Restrict xmon to read-only operations by default"
128	depends on XMON
129	default y
130	help
131	  Operate xmon in read-only mode. The cmdline options 'xmon=rw' and
132	  'xmon=ro' override this default.
133
134config DEBUGGER
135	bool
136	depends on KGDB || XMON
137	default y
138
139config BDI_SWITCH
140	bool "Include BDI-2000 user context switcher"
141	depends on DEBUG_KERNEL && PPC32
142	help
143	  Include in-kernel support for the Abatron BDI2000 debugger.
144	  Unless you are intending to debug the kernel with one of these
145	  machines, say N here.
146
147config BOOTX_TEXT
148	bool "Support for early boot text console (BootX or OpenFirmware only)"
149	depends on PPC_BOOK3S
150	help
151	  Say Y here to see progress messages from the boot firmware in text
152	  mode. Requires either BootX or Open Firmware.
153
154config PPC_EARLY_DEBUG
155	bool "Early debugging (dangerous)"
156	help
157	  Say Y to enable some early debugging facilities that may be available
158	  for your processor/board combination. Those facilities are hacks
159	  intended to debug problems early during boot, this should not be
160	  enabled in a production kernel.
161	  Note that enabling this will also cause the kernel default log level
162	  to be pushed to max automatically very early during boot
163
164choice
165	prompt "Early debugging console"
166	depends on PPC_EARLY_DEBUG
167	help
168	  Use the selected console for early debugging. Careful, if you
169	  enable debugging for the wrong type of machine your kernel
170	  _will not boot_.
171
172config PPC_EARLY_DEBUG_BOOTX
173	bool "BootX or OpenFirmware"
174	depends on BOOTX_TEXT
175	help
176	  Select this to enable early debugging for a machine using BootX
177	  or OpenFirmware.
178
179config PPC_EARLY_DEBUG_LPAR
180	bool "LPAR HV Console"
181	depends on PPC_PSERIES && HVC_CONSOLE
182	help
183	  Select this to enable early debugging for a machine with a HVC
184	  console on vterm 0.
185
186config PPC_EARLY_DEBUG_LPAR_HVSI
187	bool "LPAR HVSI Console"
188	depends on PPC_PSERIES && HVC_CONSOLE
189	help
190	  Select this to enable early debugging for a machine with a HVSI
191	  console on a specified vterm.
192
193config PPC_EARLY_DEBUG_G5
194	bool "Apple G5"
195	depends on PPC_PMAC64
196	help
197	  Select this to enable early debugging for Apple G5 machines.
198
199config PPC_EARLY_DEBUG_RTAS_PANEL
200	bool "RTAS Panel"
201	depends on PPC_RTAS
202	help
203	  Select this to enable early debugging via the RTAS panel.
204
205config PPC_EARLY_DEBUG_RTAS_CONSOLE
206	bool "RTAS Console"
207	depends on PPC_RTAS
208	select UDBG_RTAS_CONSOLE
209	help
210	  Select this to enable early debugging via the RTAS console.
211
212config PPC_EARLY_DEBUG_MAPLE
213	bool "Maple real mode"
214	depends on PPC_MAPLE
215	help
216	  Select this to enable early debugging for Maple.
217
218config PPC_EARLY_DEBUG_PAS_REALMODE
219	bool "PA Semi real mode"
220	depends on PPC_PASEMI
221	help
222	  Select this to enable early debugging for PA Semi.
223	  Output will be on UART0.
224
225config PPC_EARLY_DEBUG_44x
226	bool "Early serial debugging for IBM/AMCC 44x CPUs"
227	depends on 44x
228	help
229	  Select this to enable early debugging for IBM 44x chips via the
230	  inbuilt serial port.  If you enable this, ensure you set
231	  PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
232
233config PPC_EARLY_DEBUG_40x
234	bool "Early serial debugging for IBM/AMCC 40x CPUs"
235	depends on 40x
236	help
237	  Select this to enable early debugging for IBM 40x chips via the
238	  inbuilt serial port. This works on chips with a 16550 compatible
239	  UART.
240
241config PPC_EARLY_DEBUG_CPM
242	bool "Early serial debugging for Freescale CPM-based serial ports"
243	depends on SERIAL_CPM
244	help
245	  Select this to enable early debugging for Freescale chips
246	  using a CPM-based serial port.  This assumes that the bootwrapper
247	  has run, and set up the CPM in a particular way.
248
249config PPC_EARLY_DEBUG_USBGECKO
250	bool "Early debugging through the USB Gecko adapter"
251	depends on GAMECUBE_COMMON
252	select USBGECKO_UDBG
253	help
254	  Select this to enable early debugging for Nintendo GameCube/Wii
255	  consoles via an external USB Gecko adapter.
256
257config PPC_EARLY_DEBUG_PS3GELIC
258	bool "Early debugging through the PS3 Ethernet port"
259	depends on PPC_PS3
260	select PS3GELIC_UDBG
261	help
262	  Select this to enable early debugging for the PlayStation3 via
263	  UDP broadcasts sent out through the Ethernet port.
264
265config PPC_EARLY_DEBUG_OPAL_RAW
266	bool "OPAL raw console"
267	depends on HVC_OPAL
268	help
269	  Select this to enable early debugging for the PowerNV platform
270	  using a "raw" console
271
272config PPC_EARLY_DEBUG_OPAL_HVSI
273	bool "OPAL hvsi console"
274	depends on HVC_OPAL
275	help
276	  Select this to enable early debugging for the PowerNV platform
277	  using an "hvsi" console
278
279config PPC_EARLY_DEBUG_MEMCONS
280	bool "In memory console"
281	help
282	  Select this to enable early debugging using an in memory console.
283	  This console provides input and output buffers stored within the
284	  kernel BSS and should be safe to select on any system. A debugger
285	  can then be used to read kernel output or send input to the console.
286endchoice
287
288config PPC_MEMCONS_OUTPUT_SIZE
289	int "In memory console output buffer size"
290	depends on PPC_EARLY_DEBUG_MEMCONS
291	default 4096
292	help
293	  Selects the size of the output buffer (in bytes) of the in memory
294	  console.
295
296config PPC_MEMCONS_INPUT_SIZE
297	int "In memory console input buffer size"
298	depends on PPC_EARLY_DEBUG_MEMCONS
299	default 128
300	help
301	  Selects the size of the input buffer (in bytes) of the in memory
302	  console.
303
304config PPC_EARLY_DEBUG_OPAL
305	def_bool y
306	depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
307
308
309config PPC_EARLY_DEBUG_HVSI_VTERMNO
310	hex "vterm number to use with early debug HVSI"
311	depends on PPC_EARLY_DEBUG_LPAR_HVSI
312	default "0x30000000"
313	help
314	  You probably want 0x30000000 for your first serial port and
315	  0x30000001 for your second one
316
317config PPC_EARLY_DEBUG_OPAL_VTERMNO
318	hex "vterm number to use with OPAL early debug"
319	depends on PPC_EARLY_DEBUG_OPAL
320	default "0"
321	help
322	  This correspond to which /dev/hvcN you want to use for early
323	  debug.
324
325	  On OPAL v2, this will be 0 for network console and 1 or 2 for
326	  the machine built-in serial ports.
327
328config PPC_EARLY_DEBUG_44x_PHYSLOW
329	hex "Low 32 bits of early debug UART physical address"
330	depends on PPC_EARLY_DEBUG_44x
331	default "0x40000200"
332	help
333	  You probably want 0x40000200 for ebony boards and
334	  0x40000300 for taishan
335
336config PPC_EARLY_DEBUG_44x_PHYSHIGH
337	hex "EPRN of early debug UART physical address"
338	depends on PPC_EARLY_DEBUG_44x
339	default "0x1"
340
341config PPC_EARLY_DEBUG_40x_PHYSADDR
342	hex "Early debug UART physical address"
343	depends on PPC_EARLY_DEBUG_40x
344	default "0xef600300"
345
346config PPC_EARLY_DEBUG_CPM_ADDR
347	hex "CPM UART early debug transmit descriptor address"
348	depends on PPC_EARLY_DEBUG_CPM
349	default "0xfa202008" if PPC_EP88XC
350	default "0xf0001ff8" if CPM2
351	default "0xff002008" if CPM1
352	help
353	  This specifies the address of the transmit descriptor
354	  used for early debug output.  Because it is needed before
355	  platform probing is done, all platforms selected must
356	  share the same address.
357
358config FAIL_IOMMU
359	bool "Fault-injection capability for IOMMU"
360	depends on FAULT_INJECTION
361	depends on PCI || IBMVIO
362	help
363	  Provide fault-injection capability for IOMMU. Each device can
364	  be selectively enabled via the fail_iommu property.
365
366	  If you are unsure, say N.
367
368config PPC_FAST_ENDIAN_SWITCH
369	bool "Deprecated fast endian-switch syscall"
370	depends on DEBUG_KERNEL && PPC_BOOK3S_64
371	help
372	  If you're unsure what this is, say N.
373
374config KASAN_SHADOW_OFFSET
375	hex
376	depends on KASAN
377	default 0xe0000000
378