diff options
Diffstat (limited to 'arch/powerpc/Kconfig.debug')
| -rw-r--r-- | arch/powerpc/Kconfig.debug | 348 |
1 files changed, 274 insertions, 74 deletions
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index 9254806f703..35d16bd2760 100644 --- a/arch/powerpc/Kconfig.debug +++ b/arch/powerpc/Kconfig.debug @@ -2,68 +2,77 @@ menu "Kernel hacking" source "lib/Kconfig.debug" -config DEBUG_STACKOVERFLOW - bool "Check for stack overflows" - depends on DEBUG_KERNEL && PPC64 +config PPC_DISABLE_WERROR + bool "Don't build arch/powerpc code with -Werror" + default n help - This option will cause messages to be printed if free stack space - drops below a certain limit. + This option tells the compiler NOT to build the code under + arch/powerpc with the -Werror flag (which means warnings + are treated as errors). -config DEBUG_STACK_USAGE - bool "Stack utilization instrumentation" - depends on DEBUG_KERNEL && PPC64 - help - Enables the display of the minimum amount of free stack which each - task has ever had available in the sysrq-T and sysrq-P debug output. + 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. - This option will slow down process creation somewhat. +config PPC_WERROR + bool + depends on !PPC_DISABLE_WERROR + default y -config DEBUGGER - bool "Enable debugger hooks" - depends on DEBUG_KERNEL +config PRINT_STACK_DEPTH + int "Stack depth to print" if DEBUG_KERNEL + default 64 help - Include in-kernel hooks for kernel debuggers. Unless you are - intending to debug the kernel, say N here. + 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 KGDB - bool "Include kgdb kernel debugger" - depends on DEBUGGER && (BROKEN || PPC_GEN550 || 4xx) - select DEBUG_INFO +config HCALL_STATS + bool "Hypervisor call instrumentation" + depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS help - Include in-kernel hooks for kgdb, the Linux kernel source level - debugger. See <http://kgdb.sourceforge.net/> for more information. - Unless you are intending to debug the kernel, say N here. - -choice - prompt "Serial Port" - depends on KGDB - default KGDB_TTYS1 + 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. -config KGDB_TTYS0 - bool "ttyS0" + This option will add a small amount of overhead to all hypervisor + calls. -config KGDB_TTYS1 - bool "ttyS1" - -config KGDB_TTYS2 - bool "ttyS2" +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 KGDB_TTYS3 - bool "ttyS3" +config CODE_PATCHING_SELFTEST + bool "Run self-tests of the code-patching code." + depends on DEBUG_KERNEL + default n -endchoice +config FTR_FIXUP_SELFTEST + bool "Run self-tests of the feature-fixup code." + depends on DEBUG_KERNEL + default n -config KGDB_CONSOLE - bool "Enable serial console thru kgdb port" - depends on KGDB && 8xx || CPM2 - help - If you enable this, all serial console messages will be sent - over the gdb stub. - If unsure, say 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 DEBUGGER && !PPC_ISERIES + 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. @@ -74,6 +83,8 @@ config 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" @@ -82,13 +93,19 @@ config XMON_DEFAULT xmon is normally disabled unless booted with 'xmon=on'. Use 'xmon=off' to disable xmon init during runtime. -config IRQSTACKS - bool "Use separate kernel stacks when processing interrupts" - depends on PPC64 +config XMON_DISASSEMBLY + bool "Include disassembly support in xmon" + depends on XMON + default y help - If you say Y here the kernel will use separate kernel stacks - for handling hard and soft interrupts. This can help avoid - overflowing the process kernel stacks. + 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" @@ -100,28 +117,35 @@ config BDI_SWITCH config BOOTX_TEXT bool "Support for early boot text console (BootX or OpenFirmware only)" - depends PPC_OF && !PPC_ISERIES + depends on PPC_OF && PPC_BOOK3S help Say Y here to see progress messages from the boot firmware in text mode. Requires either BootX or Open Firmware. -config SERIAL_TEXT_DEBUG - bool "Support for early boot texts over serial port" - depends on 4xx || LOPEC || MV64X60 || PPLUS || PRPMC800 || \ - PPC_GEN550 || PPC_MPC52xx - -config PPC_OCP - bool - depends on IBM_OCP || XILINX_OCP - default y +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 (dangerous)" - bool - optional + 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 - Enable early debugging. Careful, if you enable debugging for the - wrong type of machine your kernel _will not boot_. + Select this to enable early debugging for a machine using BootX + or OpenFirmware. config PPC_EARLY_DEBUG_LPAR bool "LPAR HV Console" @@ -130,31 +154,207 @@ config PPC_EARLY_DEBUG_LPAR 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 + 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 +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_ISERIES - bool "iSeries HV Console" - depends on PPC_ISERIES +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_BEAT + bool "Beat HV Console" + depends on PPC_CELLEB + select PPC_UDBG_BEAT help - Select this to enable early debugging for legacy iSeries. You need - to hit "Ctrl-x Ctrl-x" to see the messages on the console. + Select this to enable early debugging for Celleb with Beat. +config PPC_EARLY_DEBUG_44x + bool "Early serial debugging for IBM/AMCC 44x CPUs" + # PPC_EARLY_DEBUG on 440 leaves AS=1 mappings above the TLB high water + # mark, which doesn't work with current 440 KVM. + depends on 44x && !KVM + 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 + select PIN_TLB if PPC_8xx + 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 STRICT_DEVMEM + def_bool y + prompt "Filter access to /dev/mem" + help + This option restricts access to /dev/mem. If this option is + disabled, you allow userspace access to all memory, including + kernel and userspace memory. Accidental memory access is likely + to be disastrous. + Memory access is required for experts who want to debug the kernel. + + If you are unsure, say Y. + +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 |