| menu "Kernel hacking" | |
| source "lib/Kconfig.debug" | |
| config PPC_DISABLE_WERROR | |
| bool "Don't build arch/powerpc code with -Werror" | |
| default n | |
| help | |
| This option tells the compiler NOT to build the code under | |
| arch/powerpc with the -Werror flag (which means warnings | |
| are treated as errors). | |
| Only enable this if you are hitting a build failure in the | |
| arch/powerpc code caused by a warning, and you don't feel | |
| inclined to fix it. | |
| config PPC_WERROR | |
| bool | |
| depends on !PPC_DISABLE_WERROR | |
| default y | |
| config PRINT_STACK_DEPTH | |
| int "Stack depth to print" if DEBUG_KERNEL | |
| default 64 | |
| help | |
| This option allows you to set the stack depth that the kernel | |
| prints in stack traces. This can be useful if your display is | |
| too small and stack traces cause important information to | |
| scroll off the screen. | |
| config HCALL_STATS | |
| bool "Hypervisor call instrumentation" | |
| depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS | |
| help | |
| Adds code to keep track of the number of hypervisor calls made and | |
| the amount of time spent in hypervisor calls. Wall time spent in | |
| each call is always calculated, and if available CPU cycles spent | |
| are also calculated. A directory named hcall_inst is added at the | |
| root of the debugfs filesystem. Within the hcall_inst directory | |
| are files that contain CPU specific call statistics. | |
| This option will add a small amount of overhead to all hypervisor | |
| calls. | |
| config PPC_EMULATED_STATS | |
| bool "Emulated instructions tracking" | |
| depends on DEBUG_FS | |
| help | |
| Adds code to keep track of the number of instructions that are | |
| emulated by the in-kernel emulator. Counters for the various classes | |
| of emulated instructions are available under | |
| powerpc/emulated_instructions/ in the root of the debugfs file | |
| system. Optionally (controlled by | |
| powerpc/emulated_instructions/do_warn in debugfs), rate-limited | |
| warnings can be printed to the console when instructions are | |
| emulated. | |
| config CODE_PATCHING_SELFTEST | |
| bool "Run self-tests of the code-patching code" | |
| depends on DEBUG_KERNEL | |
| default n | |
| config JUMP_LABEL_FEATURE_CHECKS | |
| bool "Enable use of jump label for cpu/mmu_has_feature()" | |
| depends on JUMP_LABEL | |
| default y | |
| help | |
| Selecting this options enables use of jump labels for some internal | |
| feature checks. This should generate more optimal code for those | |
| checks. | |
| config JUMP_LABEL_FEATURE_CHECK_DEBUG | |
| bool "Do extra check on feature fixup calls" | |
| depends on DEBUG_KERNEL && JUMP_LABEL_FEATURE_CHECKS | |
| default n | |
| help | |
| This tries to catch incorrect usage of cpu_has_feature() and | |
| mmu_has_feature() in the code. | |
| If you don't know what this means, say N. | |
| config FTR_FIXUP_SELFTEST | |
| bool "Run self-tests of the feature-fixup code" | |
| depends on DEBUG_KERNEL | |
| default n | |
| config MSI_BITMAP_SELFTEST | |
| bool "Run self-tests of the MSI bitmap code" | |
| depends on DEBUG_KERNEL | |
| default n | |
| config XMON | |
| bool "Include xmon kernel debugger" | |
| depends on DEBUG_KERNEL | |
| help | |
| Include in-kernel hooks for the xmon kernel monitor/debugger. | |
| Unless you are intending to debug the kernel, say N here. | |
| Make sure to enable also CONFIG_BOOTX_TEXT on Macs. Otherwise | |
| nothing will appear on the screen (xmon writes directly to the | |
| framebuffer memory). | |
| The cmdline option 'xmon' or 'xmon=early' will drop into xmon | |
| very early during boot. 'xmon=on' will just enable the xmon | |
| debugger hooks. 'xmon=off' will disable the debugger hooks | |
| if CONFIG_XMON_DEFAULT is set. | |
| xmon will print a backtrace on the very first invocation. | |
| 'xmon=nobt' will disable this autobacktrace. | |
| config XMON_DEFAULT | |
| bool "Enable xmon by default" | |
| depends on XMON | |
| help | |
| xmon is normally disabled unless booted with 'xmon=on'. | |
| Use 'xmon=off' to disable xmon init during runtime. | |
| config XMON_DISASSEMBLY | |
| bool "Include disassembly support in xmon" | |
| depends on XMON | |
| default y | |
| help | |
| Include support for disassembling in xmon. You probably want | |
| to say Y here, unless you're building for a memory-constrained | |
| system. | |
| config DEBUGGER | |
| bool | |
| depends on KGDB || XMON | |
| default y | |
| config BDI_SWITCH | |
| bool "Include BDI-2000 user context switcher" | |
| depends on DEBUG_KERNEL && PPC32 | |
| help | |
| Include in-kernel support for the Abatron BDI2000 debugger. | |
| Unless you are intending to debug the kernel with one of these | |
| machines, say N here. | |
| config BOOTX_TEXT | |
| bool "Support for early boot text console (BootX or OpenFirmware only)" | |
| depends on PPC_BOOK3S | |
| help | |
| Say Y here to see progress messages from the boot firmware in text | |
| mode. Requires either BootX or Open Firmware. | |
| config PPC_EARLY_DEBUG | |
| bool "Early debugging (dangerous)" | |
| help | |
| Say Y to enable some early debugging facilities that may be available | |
| for your processor/board combination. Those facilities are hacks | |
| intended to debug problems early during boot, this should not be | |
| enabled in a production kernel. | |
| Note that enabling this will also cause the kernel default log level | |
| to be pushed to max automatically very early during boot | |
| choice | |
| prompt "Early debugging console" | |
| depends on PPC_EARLY_DEBUG | |
| help | |
| Use the selected console for early debugging. Careful, if you | |
| enable debugging for the wrong type of machine your kernel | |
| _will not boot_. | |
| config PPC_EARLY_DEBUG_BOOTX | |
| bool "BootX or OpenFirmware" | |
| depends on BOOTX_TEXT | |
| help | |
| Select this to enable early debugging for a machine using BootX | |
| or OpenFirmware. | |
| config PPC_EARLY_DEBUG_LPAR | |
| bool "LPAR HV Console" | |
| depends on PPC_PSERIES && HVC_CONSOLE | |
| help | |
| Select this to enable early debugging for a machine with a HVC | |
| console on vterm 0. | |
| config PPC_EARLY_DEBUG_LPAR_HVSI | |
| bool "LPAR HVSI Console" | |
| depends on PPC_PSERIES && HVC_CONSOLE | |
| help | |
| Select this to enable early debugging for a machine with a HVSI | |
| console on a specified vterm. | |
| config PPC_EARLY_DEBUG_G5 | |
| bool "Apple G5" | |
| depends on PPC_PMAC64 | |
| help | |
| Select this to enable early debugging for Apple G5 machines. | |
| config PPC_EARLY_DEBUG_RTAS_PANEL | |
| bool "RTAS Panel" | |
| depends on PPC_RTAS | |
| help | |
| Select this to enable early debugging via the RTAS panel. | |
| config PPC_EARLY_DEBUG_RTAS_CONSOLE | |
| bool "RTAS Console" | |
| depends on PPC_RTAS | |
| select UDBG_RTAS_CONSOLE | |
| help | |
| Select this to enable early debugging via the RTAS console. | |
| config PPC_EARLY_DEBUG_MAPLE | |
| bool "Maple real mode" | |
| depends on PPC_MAPLE | |
| help | |
| Select this to enable early debugging for Maple. | |
| config PPC_EARLY_DEBUG_PAS_REALMODE | |
| bool "PA Semi real mode" | |
| depends on PPC_PASEMI | |
| help | |
| Select this to enable early debugging for PA Semi. | |
| Output will be on UART0. | |
| config PPC_EARLY_DEBUG_44x | |
| bool "Early serial debugging for IBM/AMCC 44x CPUs" | |
| depends on 44x | |
| help | |
| Select this to enable early debugging for IBM 44x chips via the | |
| inbuilt serial port. If you enable this, ensure you set | |
| PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board. | |
| config PPC_EARLY_DEBUG_40x | |
| bool "Early serial debugging for IBM/AMCC 40x CPUs" | |
| depends on 40x | |
| help | |
| Select this to enable early debugging for IBM 40x chips via the | |
| inbuilt serial port. This works on chips with a 16550 compatible | |
| UART. Xilinx chips with uartlite cannot use this option. | |
| config PPC_EARLY_DEBUG_CPM | |
| bool "Early serial debugging for Freescale CPM-based serial ports" | |
| depends on SERIAL_CPM | |
| help | |
| Select this to enable early debugging for Freescale chips | |
| using a CPM-based serial port. This assumes that the bootwrapper | |
| has run, and set up the CPM in a particular way. | |
| config PPC_EARLY_DEBUG_USBGECKO | |
| bool "Early debugging through the USB Gecko adapter" | |
| depends on GAMECUBE_COMMON | |
| select USBGECKO_UDBG | |
| help | |
| Select this to enable early debugging for Nintendo GameCube/Wii | |
| consoles via an external USB Gecko adapter. | |
| config PPC_EARLY_DEBUG_PS3GELIC | |
| bool "Early debugging through the PS3 Ethernet port" | |
| depends on PPC_PS3 | |
| select PS3GELIC_UDBG | |
| help | |
| Select this to enable early debugging for the PlayStation3 via | |
| UDP broadcasts sent out through the Ethernet port. | |
| config PPC_EARLY_DEBUG_OPAL_RAW | |
| bool "OPAL raw console" | |
| depends on HVC_OPAL | |
| help | |
| Select this to enable early debugging for the PowerNV platform | |
| using a "raw" console | |
| config PPC_EARLY_DEBUG_OPAL_HVSI | |
| bool "OPAL hvsi console" | |
| depends on HVC_OPAL | |
| help | |
| Select this to enable early debugging for the PowerNV platform | |
| using an "hvsi" console | |
| config PPC_EARLY_DEBUG_MEMCONS | |
| bool "In memory console" | |
| help | |
| Select this to enable early debugging using an in memory console. | |
| This console provides input and output buffers stored within the | |
| kernel BSS and should be safe to select on any system. A debugger | |
| can then be used to read kernel output or send input to the console. | |
| endchoice | |
| config PPC_MEMCONS_OUTPUT_SIZE | |
| int "In memory console output buffer size" | |
| depends on PPC_EARLY_DEBUG_MEMCONS | |
| default 4096 | |
| help | |
| Selects the size of the output buffer (in bytes) of the in memory | |
| console. | |
| config PPC_MEMCONS_INPUT_SIZE | |
| int "In memory console input buffer size" | |
| depends on PPC_EARLY_DEBUG_MEMCONS | |
| default 128 | |
| help | |
| Selects the size of the input buffer (in bytes) of the in memory | |
| console. | |
| config PPC_EARLY_DEBUG_OPAL | |
| def_bool y | |
| depends on PPC_EARLY_DEBUG_OPAL_RAW || PPC_EARLY_DEBUG_OPAL_HVSI | |
| config PPC_EARLY_DEBUG_HVSI_VTERMNO | |
| hex "vterm number to use with early debug HVSI" | |
| depends on PPC_EARLY_DEBUG_LPAR_HVSI | |
| default "0x30000000" | |
| help | |
| You probably want 0x30000000 for your first serial port and | |
| 0x30000001 for your second one | |
| config PPC_EARLY_DEBUG_OPAL_VTERMNO | |
| hex "vterm number to use with OPAL early debug" | |
| depends on PPC_EARLY_DEBUG_OPAL | |
| default "0" | |
| help | |
| This correspond to which /dev/hvcN you want to use for early | |
| debug. | |
| On OPAL v2, this will be 0 for network console and 1 or 2 for | |
| the machine built-in serial ports. | |
| config PPC_EARLY_DEBUG_44x_PHYSLOW | |
| hex "Low 32 bits of early debug UART physical address" | |
| depends on PPC_EARLY_DEBUG_44x | |
| default "0x40000200" | |
| help | |
| You probably want 0x40000200 for ebony boards and | |
| 0x40000300 for taishan | |
| config PPC_EARLY_DEBUG_44x_PHYSHIGH | |
| hex "EPRN of early debug UART physical address" | |
| depends on PPC_EARLY_DEBUG_44x | |
| default "0x1" | |
| config PPC_EARLY_DEBUG_40x_PHYSADDR | |
| hex "Early debug UART physical address" | |
| depends on PPC_EARLY_DEBUG_40x | |
| default "0xef600300" | |
| config PPC_EARLY_DEBUG_CPM_ADDR | |
| hex "CPM UART early debug transmit descriptor address" | |
| depends on PPC_EARLY_DEBUG_CPM | |
| default "0xfa202008" if PPC_EP88XC | |
| default "0xf0001ff8" if CPM2 | |
| default "0xff002008" if CPM1 | |
| help | |
| This specifies the address of the transmit descriptor | |
| used for early debug output. Because it is needed before | |
| platform probing is done, all platforms selected must | |
| share the same address. | |
| config FAIL_IOMMU | |
| bool "Fault-injection capability for IOMMU" | |
| depends on FAULT_INJECTION | |
| help | |
| Provide fault-injection capability for IOMMU. Each device can | |
| be selectively enabled via the fail_iommu property. | |
| If you are unsure, say N. | |
| endmenu |