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1# SPDX-License-Identifier: GPL-2.0
2menu "Kernel hacking"
3
4source "lib/Kconfig.debug"
5
6config PPC_DISABLE_WERROR
7 bool "Don't build arch/powerpc code with -Werror"
8 default n
9 help
10 This option tells the compiler NOT to build the code under
11 arch/powerpc with the -Werror flag (which means warnings
12 are treated as errors).
13
14 Only enable this if you are hitting a build failure in the
15 arch/powerpc code caused by a warning, and you don't feel
16 inclined to fix it.
17
18config PPC_WERROR
19 bool
20 depends on !PPC_DISABLE_WERROR
21 default y
22
23config PRINT_STACK_DEPTH
24 int "Stack depth to print" if DEBUG_KERNEL
25 default 64
26 help
27 This option allows you to set the stack depth that the kernel
28 prints in stack traces. This can be useful if your display is
29 too small and stack traces cause important information to
30 scroll off the screen.
31
32config HCALL_STATS
33 bool "Hypervisor call instrumentation"
34 depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS
35 help
36 Adds code to keep track of the number of hypervisor calls made and
37 the amount of time spent in hypervisor calls. Wall time spent in
38 each call is always calculated, and if available CPU cycles spent
39 are also calculated. A directory named hcall_inst is added at the
40 root of the debugfs filesystem. Within the hcall_inst directory
41 are files that contain CPU specific call statistics.
42
43 This option will add a small amount of overhead to all hypervisor
44 calls.
45
46config PPC_EMULATED_STATS
47 bool "Emulated instructions tracking"
48 depends on DEBUG_FS
49 help
50 Adds code to keep track of the number of instructions that are
51 emulated by the in-kernel emulator. Counters for the various classes
52 of emulated instructions are available under
53 powerpc/emulated_instructions/ in the root of the debugfs file
54 system. Optionally (controlled by
55 powerpc/emulated_instructions/do_warn in debugfs), rate-limited
56 warnings can be printed to the console when instructions are
57 emulated.
58
59config CODE_PATCHING_SELFTEST
60 bool "Run self-tests of the code-patching code"
61 depends on DEBUG_KERNEL
62 default n
63
64config JUMP_LABEL_FEATURE_CHECKS
65 bool "Enable use of jump label for cpu/mmu_has_feature()"
66 depends on JUMP_LABEL
67 default y
68 help
69 Selecting this options enables use of jump labels for some internal
70 feature checks. This should generate more optimal code for those
71 checks.
72
73config JUMP_LABEL_FEATURE_CHECK_DEBUG
74 bool "Do extra check on feature fixup calls"
75 depends on DEBUG_KERNEL && JUMP_LABEL_FEATURE_CHECKS
76 default n
77 help
78 This tries to catch incorrect usage of cpu_has_feature() and
79 mmu_has_feature() in the code.
80
81 If you don't know what this means, say N.
82
83config FTR_FIXUP_SELFTEST
84 bool "Run self-tests of the feature-fixup code"
85 depends on DEBUG_KERNEL
86 default n
87
88config MSI_BITMAP_SELFTEST
89 bool "Run self-tests of the MSI bitmap code"
90 depends on DEBUG_KERNEL
91 default n
92
93config PPC_IRQ_SOFT_MASK_DEBUG
94 bool "Include extra checks for powerpc irq soft masking"
95 default n
96
97config XMON
98 bool "Include xmon kernel debugger"
99 depends on DEBUG_KERNEL
100 help
101 Include in-kernel hooks for the xmon kernel monitor/debugger.
102 Unless you are intending to debug the kernel, say N here.
103 Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise
104 nothing will appear on the screen (xmon writes directly to the
105 framebuffer memory).
106 The cmdline option 'xmon' or 'xmon=early' will drop into xmon
107 very early during boot. 'xmon=on' will just enable the xmon
108 debugger hooks. 'xmon=off' will disable the debugger hooks
109 if CONFIG_XMON_DEFAULT is set.
110 xmon will print a backtrace on the very first invocation.
111 'xmon=nobt' will disable this autobacktrace.
112
113config XMON_DEFAULT
114 bool "Enable xmon by default"
115 depends on XMON
116 help
117 xmon is normally disabled unless booted with 'xmon=on'.
118 Use 'xmon=off' to disable xmon init during runtime.
119
120config XMON_DISASSEMBLY
121 bool "Include disassembly support in xmon"
122 depends on XMON
123 default y
124 help
125 Include support for disassembling in xmon. You probably want
126 to say Y here, unless you're building for a memory-constrained
127 system.
128
129config DEBUGGER
130 bool
131 depends on KGDB || XMON
132 default y
133
134config BDI_SWITCH
135 bool "Include BDI-2000 user context switcher"
136 depends on DEBUG_KERNEL && PPC32
137 help
138 Include in-kernel support for the Abatron BDI2000 debugger.
139 Unless you are intending to debug the kernel with one of these
140 machines, say N here.
141
142config BOOTX_TEXT
143 bool "Support for early boot text console (BootX or OpenFirmware only)"
144 depends on PPC_BOOK3S
145 help
146 Say Y here to see progress messages from the boot firmware in text
147 mode. Requires either BootX or Open Firmware.
148
149config PPC_EARLY_DEBUG
150 bool "Early debugging (dangerous)"
151 help
152 Say Y to enable some early debugging facilities that may be available
153 for your processor/board combination. Those facilities are hacks
154 intended to debug problems early during boot, this should not be
155 enabled in a production kernel.
156 Note that enabling this will also cause the kernel default log level
157 to be pushed to max automatically very early during boot
158
159choice
160 prompt "Early debugging console"
161 depends on PPC_EARLY_DEBUG
162 help
163 Use the selected console for early debugging. Careful, if you
164 enable debugging for the wrong type of machine your kernel
165 _will not boot_.
166
167config PPC_EARLY_DEBUG_BOOTX
168 bool "BootX or OpenFirmware"
169 depends on BOOTX_TEXT
170 help
171 Select this to enable early debugging for a machine using BootX
172 or OpenFirmware.
173
174config PPC_EARLY_DEBUG_LPAR
175 bool "LPAR HV Console"
176 depends on PPC_PSERIES && HVC_CONSOLE
177 help
178 Select this to enable early debugging for a machine with a HVC
179 console on vterm 0.
180
181config PPC_EARLY_DEBUG_LPAR_HVSI
182 bool "LPAR HVSI Console"
183 depends on PPC_PSERIES && HVC_CONSOLE
184 help
185 Select this to enable early debugging for a machine with a HVSI
186 console on a specified vterm.
187
188config PPC_EARLY_DEBUG_G5
189 bool "Apple G5"
190 depends on PPC_PMAC64
191 help
192 Select this to enable early debugging for Apple G5 machines.
193
194config PPC_EARLY_DEBUG_RTAS_PANEL
195 bool "RTAS Panel"
196 depends on PPC_RTAS
197 help
198 Select this to enable early debugging via the RTAS panel.
199
200config PPC_EARLY_DEBUG_RTAS_CONSOLE
201 bool "RTAS Console"
202 depends on PPC_RTAS
203 select UDBG_RTAS_CONSOLE
204 help
205 Select this to enable early debugging via the RTAS console.
206
207config PPC_EARLY_DEBUG_MAPLE
208 bool "Maple real mode"
209 depends on PPC_MAPLE
210 help
211 Select this to enable early debugging for Maple.
212
213config PPC_EARLY_DEBUG_PAS_REALMODE
214 bool "PA Semi real mode"
215 depends on PPC_PASEMI
216 help
217 Select this to enable early debugging for PA Semi.
218 Output will be on UART0.
219
220config PPC_EARLY_DEBUG_44x
221 bool "Early serial debugging for IBM/AMCC 44x CPUs"
222 depends on 44x
223 help
224 Select this to enable early debugging for IBM 44x chips via the
225 inbuilt serial port. If you enable this, ensure you set
226 PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
227
228config PPC_EARLY_DEBUG_40x
229 bool "Early serial debugging for IBM/AMCC 40x CPUs"
230 depends on 40x
231 help
232 Select this to enable early debugging for IBM 40x chips via the
233 inbuilt serial port. This works on chips with a 16550 compatible
234 UART. Xilinx chips with uartlite cannot use this option.
235
236config PPC_EARLY_DEBUG_CPM
237 bool "Early serial debugging for Freescale CPM-based serial ports"
238 depends on SERIAL_CPM
239 help
240 Select this to enable early debugging for Freescale chips
241 using a CPM-based serial port. This assumes that the bootwrapper
242 has run, and set up the CPM in a particular way.
243
244config PPC_EARLY_DEBUG_USBGECKO
245 bool "Early debugging through the USB Gecko adapter"
246 depends on GAMECUBE_COMMON
247 select USBGECKO_UDBG
248 help
249 Select this to enable early debugging for Nintendo GameCube/Wii
250 consoles via an external USB Gecko adapter.
251
252config PPC_EARLY_DEBUG_PS3GELIC
253 bool "Early debugging through the PS3 Ethernet port"
254 depends on PPC_PS3
255 select PS3GELIC_UDBG
256 help
257 Select this to enable early debugging for the PlayStation3 via
258 UDP broadcasts sent out through the Ethernet port.
259
260config PPC_EARLY_DEBUG_OPAL_RAW
261 bool "OPAL raw console"
262 depends on HVC_OPAL
263 help
264 Select this to enable early debugging for the PowerNV platform
265 using a "raw" console
266
267config PPC_EARLY_DEBUG_OPAL_HVSI
268 bool "OPAL hvsi console"
269 depends on HVC_OPAL
270 help
271 Select this to enable early debugging for the PowerNV platform
272 using an "hvsi" console
273
274config PPC_EARLY_DEBUG_MEMCONS
275 bool "In memory console"
276 help
277 Select this to enable early debugging using an in memory console.
278 This console provides input and output buffers stored within the
279 kernel BSS and should be safe to select on any system. A debugger
280 can then be used to read kernel output or send input to the console.
281endchoice
282
283config PPC_MEMCONS_OUTPUT_SIZE
284 int "In memory console output buffer size"
285 depends on PPC_EARLY_DEBUG_MEMCONS
286 default 4096
287 help
288 Selects the size of the output buffer (in bytes) of the in memory
289 console.
290
291config PPC_MEMCONS_INPUT_SIZE
292 int "In memory console input buffer size"
293 depends on PPC_EARLY_DEBUG_MEMCONS
294 default 128
295 help
296 Selects the size of the input buffer (in bytes) of the in memory
297 console.
298
299config PPC_EARLY_DEBUG_OPAL
300 def_bool y
301 depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
302
303
304config PPC_EARLY_DEBUG_HVSI_VTERMNO
305 hex "vterm number to use with early debug HVSI"
306 depends on PPC_EARLY_DEBUG_LPAR_HVSI
307 default "0x30000000"
308 help
309 You probably want 0x30000000 for your first serial port and
310 0x30000001 for your second one
311
312config PPC_EARLY_DEBUG_OPAL_VTERMNO
313 hex "vterm number to use with OPAL early debug"
314 depends on PPC_EARLY_DEBUG_OPAL
315 default "0"
316 help
317 This correspond to which /dev/hvcN you want to use for early
318 debug.
319
320 On OPAL v2, this will be 0 for network console and 1 or 2 for
321 the machine built-in serial ports.
322
323config PPC_EARLY_DEBUG_44x_PHYSLOW
324 hex "Low 32 bits of early debug UART physical address"
325 depends on PPC_EARLY_DEBUG_44x
326 default "0x40000200"
327 help
328 You probably want 0x40000200 for ebony boards and
329 0x40000300 for taishan
330
331config PPC_EARLY_DEBUG_44x_PHYSHIGH
332 hex "EPRN of early debug UART physical address"
333 depends on PPC_EARLY_DEBUG_44x
334 default "0x1"
335
336config PPC_EARLY_DEBUG_40x_PHYSADDR
337 hex "Early debug UART physical address"
338 depends on PPC_EARLY_DEBUG_40x
339 default "0xef600300"
340
341config PPC_EARLY_DEBUG_CPM_ADDR
342 hex "CPM UART early debug transmit descriptor address"
343 depends on PPC_EARLY_DEBUG_CPM
344 default "0xfa202008" if PPC_EP88XC
345 default "0xf0001ff8" if CPM2
346 default "0xff002008" if CPM1
347 help
348 This specifies the address of the transmit descriptor
349 used for early debug output. Because it is needed before
350 platform probing is done, all platforms selected must
351 share the same address.
352
353config FAIL_IOMMU
354 bool "Fault-injection capability for IOMMU"
355 depends on FAULT_INJECTION
356 help
357 Provide fault-injection capability for IOMMU. Each device can
358 be selectively enabled via the fail_iommu property.
359
360 If you are unsure, say N.
361
362config PPC_PTDUMP
363 bool "Export kernel pagetable layout to userspace via debugfs"
364 depends on DEBUG_KERNEL && DEBUG_FS
365 help
366 This option exports the state of the kernel pagetables to a
367 debugfs file. This is only useful for kernel developers who are
368 working in architecture specific areas of the kernel - probably
369 not a good idea to enable this feature in a production kernel.
370
371 If you are unsure, say N.
372
373config PPC_HTDUMP
374 def_bool y
375 depends on PPC_PTDUMP && PPC_BOOK3S_64
376
377config PPC_FAST_ENDIAN_SWITCH
378 bool "Deprecated fast endian-switch syscall"
379 depends on DEBUG_KERNEL && PPC_BOOK3S_64
380 help
381 If you're unsure what this is, say N.
382
383endmenu
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_PAS_REALMODE
227 bool "PA Semi real mode"
228 depends on PPC_PASEMI
229 help
230 Select this to enable early debugging for PA Semi.
231 Output will be on UART0.
232
233config PPC_EARLY_DEBUG_44x
234 bool "Early serial debugging for IBM/AMCC 44x CPUs"
235 depends on 44x
236 help
237 Select this to enable early debugging for IBM 44x chips via the
238 inbuilt serial port. If you enable this, ensure you set
239 PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
240
241config PPC_EARLY_DEBUG_CPM
242 bool "Early serial debugging for Freescale CPM-based serial ports"
243 depends on SERIAL_CPM=y
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 help
261 Select this to enable early debugging for the PlayStation3 via
262 UDP broadcasts sent out through the Ethernet port.
263
264config PPC_EARLY_DEBUG_OPAL_RAW
265 bool "OPAL raw console"
266 depends on HVC_OPAL
267 help
268 Select this to enable early debugging for the PowerNV platform
269 using a "raw" console
270
271config PPC_EARLY_DEBUG_OPAL_HVSI
272 bool "OPAL hvsi console"
273 depends on HVC_OPAL
274 help
275 Select this to enable early debugging for the PowerNV platform
276 using an "hvsi" console
277
278config PPC_EARLY_DEBUG_MEMCONS
279 bool "In memory console"
280 help
281 Select this to enable early debugging using an in memory console.
282 This console provides input and output buffers stored within the
283 kernel BSS and should be safe to select on any system. A debugger
284 can then be used to read kernel output or send input to the console.
285
286config PPC_EARLY_DEBUG_16550
287 bool "Serial 16550"
288 depends on PPC_UDBG_16550
289 help
290 Select this to enable early debugging via Serial 16550 console
291endchoice
292
293config PPC_MEMCONS_OUTPUT_SIZE
294 int "In memory console output buffer size"
295 depends on PPC_EARLY_DEBUG_MEMCONS
296 default 4096
297 help
298 Selects the size of the output buffer (in bytes) of the in memory
299 console.
300
301config PPC_MEMCONS_INPUT_SIZE
302 int "In memory console input buffer size"
303 depends on PPC_EARLY_DEBUG_MEMCONS
304 default 128
305 help
306 Selects the size of the input buffer (in bytes) of the in memory
307 console.
308
309config PPC_EARLY_DEBUG_OPAL
310 def_bool y
311 depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI
312
313config PPC_EARLY_DEBUG_HVSI_VTERMNO
314 hex "vterm number to use with early debug HVSI"
315 depends on PPC_EARLY_DEBUG_LPAR_HVSI
316 default "0x30000000"
317 help
318 You probably want 0x30000000 for your first serial port and
319 0x30000001 for your second one
320
321config PPC_EARLY_DEBUG_OPAL_VTERMNO
322 hex "vterm number to use with OPAL early debug"
323 depends on PPC_EARLY_DEBUG_OPAL
324 default "0"
325 help
326 This correspond to which /dev/hvcN you want to use for early
327 debug.
328
329 On OPAL v2, this will be 0 for network console and 1 or 2 for
330 the machine built-in serial ports.
331
332config PPC_EARLY_DEBUG_44x_PHYSLOW
333 hex "Low 32 bits of early debug UART physical address"
334 depends on PPC_EARLY_DEBUG_44x
335 default "0x40000200"
336 help
337 You probably want 0x40000200 for ebony boards and
338 0x40000300 for taishan
339
340config PPC_EARLY_DEBUG_44x_PHYSHIGH
341 hex "EPRN of early debug UART physical address"
342 depends on PPC_EARLY_DEBUG_44x
343 default "0x1"
344
345config PPC_EARLY_DEBUG_CPM_ADDR
346 hex "CPM UART early debug transmit descriptor address"
347 depends on PPC_EARLY_DEBUG_CPM
348 default "0xfa202008" if PPC_EP88XC
349 default "0xf0001ff8" if CPM2
350 default "0xff002008" if CPM1
351 help
352 This specifies the address of the transmit descriptor
353 used for early debug output. Because it is needed before
354 platform probing is done, all platforms selected must
355 share the same address.
356
357config PPC_EARLY_DEBUG_16550_PHYSADDR
358 hex "Early debug Serial 16550 physical address"
359 depends on PPC_EARLY_DEBUG_16550
360
361config PPC_EARLY_DEBUG_16550_STRIDE
362 int "Early debug Serial 16550 stride"
363 depends on PPC_EARLY_DEBUG_16550
364 default 1
365
366config FAIL_IOMMU
367 bool "Fault-injection capability for IOMMU"
368 depends on FAULT_INJECTION
369 depends on PCI || IBMVIO
370 help
371 Provide fault-injection capability for IOMMU. Each device can
372 be selectively enabled via the fail_iommu property.
373
374 If you are unsure, say N.
375
376config KASAN_SHADOW_OFFSET
377 hex
378 depends on KASAN
379 default 0xe0000000 if PPC32
380 default 0xa80e000000000000 if PPC_BOOK3S_64
381 default 0xa8001c0000000000 if PPC_BOOK3E_64