| 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | |
| 3 | config 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 | |
| 14 | config PPC_WERROR |
| 15 | bool |
| 16 | depends on !PPC_DISABLE_WERROR |
| 17 | default y |
| 18 | |
| 19 | config 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 | |
| 28 | config 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 | |
| 42 | config 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 | |
| 55 | config CODE_PATCHING_SELFTEST |
| 56 | bool "Run self-tests of the code-patching code" |
| 57 | depends on DEBUG_KERNEL |
| 58 | |
| 59 | config 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 | |
| 68 | config 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 | |
| 77 | config FTR_FIXUP_SELFTEST |
| 78 | bool "Run self-tests of the feature-fixup code" |
| 79 | depends on DEBUG_KERNEL |
| 80 | |
| 81 | config MSI_BITMAP_SELFTEST |
| 82 | bool "Run self-tests of the MSI bitmap code" |
| 83 | depends on DEBUG_KERNEL |
| 84 | |
| 85 | config 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 | |
| 96 | config PPC_IRQ_SOFT_MASK_DEBUG |
| 97 | bool "Include extra checks for powerpc irq soft masking" |
| 98 | depends on PPC64 |
| 99 | |
| 100 | config PPC_RFI_SRR_DEBUG |
| 101 | bool "Include extra checks for RFI SRR register validity" |
| 102 | depends on PPC_BOOK3S_64 |
| 103 | |
| 104 | config 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 | |
| 121 | config 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 | |
| 128 | config 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 | |
| 137 | config 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 | |
| 145 | config DEBUGGER |
| 146 | bool |
| 147 | depends on KGDB || XMON |
| 148 | default y |
| 149 | |
| 150 | config 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 | |
| 158 | config 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 | |
| 167 | config 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 | |
| 177 | choice |
| 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 | |
| 185 | config 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 | |
| 192 | config 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 | |
| 199 | config 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 | |
| 206 | config 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 | |
| 212 | config 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 | |
| 218 | config 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 | |
| 225 | config 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 | |
| 233 | config 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 | |
| 241 | config 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 | |
| 249 | config 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 | |
| 256 | config 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 | |
| 263 | config 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 | |
| 270 | config 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 | |
| 278 | config 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 |
| 283 | endchoice |
| 284 | |
| 285 | config 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 | |
| 293 | config 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 | |
| 301 | config PPC_EARLY_DEBUG_OPAL |
| 302 | def_bool y |
| 303 | depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI |
| 304 | |
| 305 | config 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 | |
| 313 | config 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 | |
| 324 | config 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 | |
| 332 | config 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 | |
| 337 | config 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 | |
| 349 | config PPC_EARLY_DEBUG_16550_PHYSADDR |
| 350 | hex "Early debug Serial 16550 physical address" |
| 351 | depends on PPC_EARLY_DEBUG_16550 |
| 352 | |
| 353 | config PPC_EARLY_DEBUG_16550_STRIDE |
| 354 | int "Early debug Serial 16550 stride" |
| 355 | depends on PPC_EARLY_DEBUG_16550 |
| 356 | default 1 |
| 357 | |
| 358 | config 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 | |
| 368 | config 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 |