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 KUNIT_ALL_TESTS 87 prompt "Enable Guest State Buffer unit tests" 88 depends on KUNIT 89 depends on KVM_BOOK3S_HV_POSSIBLE 90 help 91 The Guest State Buffer is a data format specified in the PAPR. 92 It is by hcalls to communicate the state of L2 guests between 93 the L1 and L0 hypervisors. Enable unit tests for the library 94 used to create and use guest state buffers. 95 96config PPC_IRQ_SOFT_MASK_DEBUG 97 bool "Include extra checks for powerpc irq soft masking" 98 depends on PPC64 99 100config PPC_RFI_SRR_DEBUG 101 bool "Include extra checks for RFI SRR register validity" 102 depends on PPC_BOOK3S_64 103 104config XMON 105 bool "Include xmon kernel debugger" 106 depends on DEBUG_KERNEL 107 select CONSOLE_POLL if SERIAL_CPM_CONSOLE 108 help 109 Include in-kernel hooks for the xmon kernel monitor/debugger. 110 Unless you are intending to debug the kernel, say N here. 111 Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise 112 nothing will appear on the screen (xmon writes directly to the 113 framebuffer memory). 114 The cmdline option 'xmon' or 'xmon=early' will drop into xmon 115 very early during boot. 'xmon=on' will just enable the xmon 116 debugger hooks. 'xmon=off' will disable the debugger hooks 117 if CONFIG_XMON_DEFAULT is set. 118 xmon will print a backtrace on the very first invocation. 119 'xmon=nobt' will disable this autobacktrace. 120 121config XMON_DEFAULT 122 bool "Enable xmon by default" 123 depends on XMON 124 help 125 xmon is normally disabled unless booted with 'xmon=on'. 126 Use 'xmon=off' to disable xmon init during runtime. 127 128config XMON_DISASSEMBLY 129 bool "Include disassembly support in xmon" 130 depends on XMON 131 default y 132 help 133 Include support for disassembling in xmon. You probably want 134 to say Y here, unless you're building for a memory-constrained 135 system. 136 137config XMON_DEFAULT_RO_MODE 138 bool "Restrict xmon to read-only operations by default" 139 depends on XMON 140 default y 141 help 142 Operate xmon in read-only mode. The cmdline options 'xmon=rw' and 143 'xmon=ro' override this default. 144 145config DEBUGGER 146 bool 147 depends on KGDB || XMON 148 default y 149 150config BDI_SWITCH 151 bool "Include BDI-2000 user context switcher" 152 depends on DEBUG_KERNEL && PPC32 153 help 154 Include in-kernel support for the Abatron BDI2000 debugger. 155 Unless you are intending to debug the kernel with one of these 156 machines, say N here. 157 158config BOOTX_TEXT 159 bool "Support for early boot text console (BootX or OpenFirmware only)" 160 depends on PPC_BOOK3S 161 select FONT_SUN8x16 162 select FONT_SUPPORT 163 help 164 Say Y here to see progress messages from the boot firmware in text 165 mode. Requires either BootX or Open Firmware. 166 167config PPC_EARLY_DEBUG 168 bool "Early debugging (dangerous)" 169 help 170 Say Y to enable some early debugging facilities that may be available 171 for your processor/board combination. Those facilities are hacks 172 intended to debug problems early during boot, this should not be 173 enabled in a production kernel. 174 Note that enabling this will also cause the kernel default log level 175 to be pushed to max automatically very early during boot 176 177choice 178 prompt "Early debugging console" 179 depends on PPC_EARLY_DEBUG 180 help 181 Use the selected console for early debugging. Careful, if you 182 enable debugging for the wrong type of machine your kernel 183 _will not boot_. 184 185config PPC_EARLY_DEBUG_BOOTX 186 bool "BootX or OpenFirmware" 187 depends on BOOTX_TEXT 188 help 189 Select this to enable early debugging for a machine using BootX 190 or OpenFirmware. 191 192config PPC_EARLY_DEBUG_LPAR 193 bool "LPAR HV Console" 194 depends on PPC_PSERIES && HVC_CONSOLE 195 help 196 Select this to enable early debugging for a machine with a HVC 197 console on vterm 0. 198 199config PPC_EARLY_DEBUG_LPAR_HVSI 200 bool "LPAR HVSI Console" 201 depends on PPC_PSERIES && HVC_CONSOLE 202 help 203 Select this to enable early debugging for a machine with a HVSI 204 console on a specified vterm. 205 206config PPC_EARLY_DEBUG_G5 207 bool "Apple G5" 208 depends on PPC_PMAC64 209 help 210 Select this to enable early debugging for Apple G5 machines. 211 212config PPC_EARLY_DEBUG_RTAS_PANEL 213 bool "RTAS Panel" 214 depends on PPC_RTAS 215 help 216 Select this to enable early debugging via the RTAS panel. 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_CPM 234 bool "Early serial debugging for Freescale CPM-based serial ports" 235 depends on SERIAL_CPM=y 236 help 237 Select this to enable early debugging for Freescale chips 238 using a CPM-based serial port. This assumes that the bootwrapper 239 has run, and set up the CPM in a particular way. 240 241config PPC_EARLY_DEBUG_USBGECKO 242 bool "Early debugging through the USB Gecko adapter" 243 depends on GAMECUBE_COMMON 244 select USBGECKO_UDBG 245 help 246 Select this to enable early debugging for Nintendo GameCube/Wii 247 consoles via an external USB Gecko adapter. 248 249config PPC_EARLY_DEBUG_PS3GELIC 250 bool "Early debugging through the PS3 Ethernet port" 251 depends on PPC_PS3 252 help 253 Select this to enable early debugging for the PlayStation3 via 254 UDP broadcasts sent out through the Ethernet port. 255 256config PPC_EARLY_DEBUG_OPAL_RAW 257 bool "OPAL raw console" 258 depends on HVC_OPAL 259 help 260 Select this to enable early debugging for the PowerNV platform 261 using a "raw" console 262 263config PPC_EARLY_DEBUG_OPAL_HVSI 264 bool "OPAL hvsi console" 265 depends on HVC_OPAL 266 help 267 Select this to enable early debugging for the PowerNV platform 268 using an "hvsi" console 269 270config PPC_EARLY_DEBUG_MEMCONS 271 bool "In memory console" 272 help 273 Select this to enable early debugging using an in memory console. 274 This console provides input and output buffers stored within the 275 kernel BSS and should be safe to select on any system. A debugger 276 can then be used to read kernel output or send input to the console. 277 278config PPC_EARLY_DEBUG_16550 279 bool "Serial 16550" 280 depends on PPC_UDBG_16550 281 help 282 Select this to enable early debugging via Serial 16550 console 283endchoice 284 285config PPC_MEMCONS_OUTPUT_SIZE 286 int "In memory console output buffer size" 287 depends on PPC_EARLY_DEBUG_MEMCONS 288 default 4096 289 help 290 Selects the size of the output buffer (in bytes) of the in memory 291 console. 292 293config PPC_MEMCONS_INPUT_SIZE 294 int "In memory console input buffer size" 295 depends on PPC_EARLY_DEBUG_MEMCONS 296 default 128 297 help 298 Selects the size of the input buffer (in bytes) of the in memory 299 console. 300 301config PPC_EARLY_DEBUG_OPAL 302 def_bool y 303 depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI 304 305config PPC_EARLY_DEBUG_HVSI_VTERMNO 306 hex "vterm number to use with early debug HVSI" 307 depends on PPC_EARLY_DEBUG_LPAR_HVSI 308 default "0x30000000" 309 help 310 You probably want 0x30000000 for your first serial port and 311 0x30000001 for your second one 312 313config PPC_EARLY_DEBUG_OPAL_VTERMNO 314 hex "vterm number to use with OPAL early debug" 315 depends on PPC_EARLY_DEBUG_OPAL 316 default "0" 317 help 318 This correspond to which /dev/hvcN you want to use for early 319 debug. 320 321 On OPAL v2, this will be 0 for network console and 1 or 2 for 322 the machine built-in serial ports. 323 324config PPC_EARLY_DEBUG_44x_PHYSLOW 325 hex "Low 32 bits of early debug UART physical address" 326 depends on PPC_EARLY_DEBUG_44x 327 default "0x40000200" 328 help 329 You probably want 0x40000200 for ebony boards and 330 0x40000300 for taishan 331 332config PPC_EARLY_DEBUG_44x_PHYSHIGH 333 hex "EPRN of early debug UART physical address" 334 depends on PPC_EARLY_DEBUG_44x 335 default "0x1" 336 337config PPC_EARLY_DEBUG_CPM_ADDR 338 hex "CPM UART early debug transmit descriptor address" 339 depends on PPC_EARLY_DEBUG_CPM 340 default "0xfa202008" if PPC_EP88XC 341 default "0xf0001ff8" if CPM2 342 default "0xff002008" if CPM1 343 help 344 This specifies the address of the transmit descriptor 345 used for early debug output. Because it is needed before 346 platform probing is done, all platforms selected must 347 share the same address. 348 349config PPC_EARLY_DEBUG_16550_PHYSADDR 350 hex "Early debug Serial 16550 physical address" 351 depends on PPC_EARLY_DEBUG_16550 352 353config PPC_EARLY_DEBUG_16550_STRIDE 354 int "Early debug Serial 16550 stride" 355 depends on PPC_EARLY_DEBUG_16550 356 default 1 357 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 KASAN_SHADOW_OFFSET 369 hex 370 depends on KASAN 371 default 0xe0000000 if PPC32 372 default 0xa80e000000000000 if PPC_BOOK3S_64 373 default 0xa8001c0000000000 if PPC_BOOK3E_64 374