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 select FONT_SUN8x16 151 select FONT_SUPPORT 152 help 153 Say Y here to see progress messages from the boot firmware in text 154 mode. Requires either BootX or Open Firmware. 155 156config PPC_EARLY_DEBUG 157 bool "Early debugging (dangerous)" 158 help 159 Say Y to enable some early debugging facilities that may be available 160 for your processor/board combination. Those facilities are hacks 161 intended to debug problems early during boot, this should not be 162 enabled in a production kernel. 163 Note that enabling this will also cause the kernel default log level 164 to be pushed to max automatically very early during boot 165 166choice 167 prompt "Early debugging console" 168 depends on PPC_EARLY_DEBUG 169 help 170 Use the selected console for early debugging. Careful, if you 171 enable debugging for the wrong type of machine your kernel 172 _will not boot_. 173 174config PPC_EARLY_DEBUG_BOOTX 175 bool "BootX or OpenFirmware" 176 depends on BOOTX_TEXT 177 help 178 Select this to enable early debugging for a machine using BootX 179 or OpenFirmware. 180 181config PPC_EARLY_DEBUG_LPAR 182 bool "LPAR HV Console" 183 depends on PPC_PSERIES && HVC_CONSOLE 184 help 185 Select this to enable early debugging for a machine with a HVC 186 console on vterm 0. 187 188config PPC_EARLY_DEBUG_LPAR_HVSI 189 bool "LPAR HVSI Console" 190 depends on PPC_PSERIES && HVC_CONSOLE 191 help 192 Select this to enable early debugging for a machine with a HVSI 193 console on a specified vterm. 194 195config PPC_EARLY_DEBUG_G5 196 bool "Apple G5" 197 depends on PPC_PMAC64 198 help 199 Select this to enable early debugging for Apple G5 machines. 200 201config PPC_EARLY_DEBUG_RTAS_PANEL 202 bool "RTAS Panel" 203 depends on PPC_RTAS 204 help 205 Select this to enable early debugging via the RTAS panel. 206 207config PPC_EARLY_DEBUG_RTAS_CONSOLE 208 bool "RTAS Console" 209 depends on PPC_RTAS 210 select UDBG_RTAS_CONSOLE 211 help 212 Select this to enable early debugging via the RTAS console. 213 214config PPC_EARLY_DEBUG_MAPLE 215 bool "Maple real mode" 216 depends on PPC_MAPLE 217 help 218 Select this to enable early debugging for Maple. 219 220config PPC_EARLY_DEBUG_PAS_REALMODE 221 bool "PA Semi real mode" 222 depends on PPC_PASEMI 223 help 224 Select this to enable early debugging for PA Semi. 225 Output will be on UART0. 226 227config PPC_EARLY_DEBUG_44x 228 bool "Early serial debugging for IBM/AMCC 44x CPUs" 229 depends on 44x 230 help 231 Select this to enable early debugging for IBM 44x chips via the 232 inbuilt serial port. If you enable this, ensure you set 233 PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board. 234 235config PPC_EARLY_DEBUG_40x 236 bool "Early serial debugging for IBM/AMCC 40x CPUs" 237 depends on 40x 238 help 239 Select this to enable early debugging for IBM 40x chips via the 240 inbuilt serial port. This works on chips with a 16550 compatible 241 UART. 242 243config PPC_EARLY_DEBUG_CPM 244 bool "Early serial debugging for Freescale CPM-based serial ports" 245 depends on SERIAL_CPM=y 246 help 247 Select this to enable early debugging for Freescale chips 248 using a CPM-based serial port. This assumes that the bootwrapper 249 has run, and set up the CPM in a particular way. 250 251config PPC_EARLY_DEBUG_USBGECKO 252 bool "Early debugging through the USB Gecko adapter" 253 depends on GAMECUBE_COMMON 254 select USBGECKO_UDBG 255 help 256 Select this to enable early debugging for Nintendo GameCube/Wii 257 consoles via an external USB Gecko adapter. 258 259config PPC_EARLY_DEBUG_PS3GELIC 260 bool "Early debugging through the PS3 Ethernet port" 261 depends on PPC_PS3 262 select PS3GELIC_UDBG 263 help 264 Select this to enable early debugging for the PlayStation3 via 265 UDP broadcasts sent out through the Ethernet port. 266 267config PPC_EARLY_DEBUG_OPAL_RAW 268 bool "OPAL raw console" 269 depends on HVC_OPAL 270 help 271 Select this to enable early debugging for the PowerNV platform 272 using a "raw" console 273 274config PPC_EARLY_DEBUG_OPAL_HVSI 275 bool "OPAL hvsi console" 276 depends on HVC_OPAL 277 help 278 Select this to enable early debugging for the PowerNV platform 279 using an "hvsi" console 280 281config PPC_EARLY_DEBUG_MEMCONS 282 bool "In memory console" 283 help 284 Select this to enable early debugging using an in memory console. 285 This console provides input and output buffers stored within the 286 kernel BSS and should be safe to select on any system. A debugger 287 can then be used to read kernel output or send input to the console. 288 289config PPC_EARLY_DEBUG_16550 290 bool "Serial 16550" 291 depends on PPC_UDBG_16550 292 help 293 Select this to enable early debugging via Serial 16550 console 294endchoice 295 296config PPC_MEMCONS_OUTPUT_SIZE 297 int "In memory console output buffer size" 298 depends on PPC_EARLY_DEBUG_MEMCONS 299 default 4096 300 help 301 Selects the size of the output buffer (in bytes) of the in memory 302 console. 303 304config PPC_MEMCONS_INPUT_SIZE 305 int "In memory console input buffer size" 306 depends on PPC_EARLY_DEBUG_MEMCONS 307 default 128 308 help 309 Selects the size of the input buffer (in bytes) of the in memory 310 console. 311 312config PPC_EARLY_DEBUG_OPAL 313 def_bool y 314 depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI 315 316config PPC_EARLY_DEBUG_HVSI_VTERMNO 317 hex "vterm number to use with early debug HVSI" 318 depends on PPC_EARLY_DEBUG_LPAR_HVSI 319 default "0x30000000" 320 help 321 You probably want 0x30000000 for your first serial port and 322 0x30000001 for your second one 323 324config PPC_EARLY_DEBUG_OPAL_VTERMNO 325 hex "vterm number to use with OPAL early debug" 326 depends on PPC_EARLY_DEBUG_OPAL 327 default "0" 328 help 329 This correspond to which /dev/hvcN you want to use for early 330 debug. 331 332 On OPAL v2, this will be 0 for network console and 1 or 2 for 333 the machine built-in serial ports. 334 335config PPC_EARLY_DEBUG_44x_PHYSLOW 336 hex "Low 32 bits of early debug UART physical address" 337 depends on PPC_EARLY_DEBUG_44x 338 default "0x40000200" 339 help 340 You probably want 0x40000200 for ebony boards and 341 0x40000300 for taishan 342 343config PPC_EARLY_DEBUG_44x_PHYSHIGH 344 hex "EPRN of early debug UART physical address" 345 depends on PPC_EARLY_DEBUG_44x 346 default "0x1" 347 348config PPC_EARLY_DEBUG_40x_PHYSADDR 349 hex "Early debug UART physical address" 350 depends on PPC_EARLY_DEBUG_40x 351 default "0xef600300" 352 353config PPC_EARLY_DEBUG_CPM_ADDR 354 hex "CPM UART early debug transmit descriptor address" 355 depends on PPC_EARLY_DEBUG_CPM 356 default "0xfa202008" if PPC_EP88XC 357 default "0xf0001ff8" if CPM2 358 default "0xff002008" if CPM1 359 help 360 This specifies the address of the transmit descriptor 361 used for early debug output. Because it is needed before 362 platform probing is done, all platforms selected must 363 share the same address. 364 365config PPC_EARLY_DEBUG_16550_PHYSADDR 366 hex "Early debug Serial 16550 physical address" 367 depends on PPC_EARLY_DEBUG_16550 368 369config PPC_EARLY_DEBUG_16550_STRIDE 370 int "Early debug Serial 16550 stride" 371 depends on PPC_EARLY_DEBUG_16550 372 default 1 373 374config FAIL_IOMMU 375 bool "Fault-injection capability for IOMMU" 376 depends on FAULT_INJECTION 377 depends on PCI || IBMVIO 378 help 379 Provide fault-injection capability for IOMMU. Each device can 380 be selectively enabled via the fail_iommu property. 381 382 If you are unsure, say N. 383 384config PPC_FAST_ENDIAN_SWITCH 385 bool "Deprecated fast endian-switch syscall" 386 depends on DEBUG_KERNEL && PPC_BOOK3S_64 387 help 388 If you're unsure what this is, say N. 389 390config KASAN_SHADOW_OFFSET 391 hex 392 depends on KASAN 393 default 0xe0000000 if PPC32 394 default 0xa80e000000000000 if PPC_BOOK3S_64 395 default 0xa8001c0000000000 if PPC_BOOK3E_64 396