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 if PPC32 378 default 0xa80e000000000000 if PPC64 379