X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=arch%2Fpowerpc%2FKconfig.debug;h=15eb27861fc713c1b02995fd030bc139652b24d2;hb=7bbe5b5aa6d1e38af6f1fc866efc0aa461d73f19;hp=19df881bf67bf2c8b826552a65cf4df7661d58b0;hpb=eeb2d21806123a67d957783c4a0c8b020a378cf0;p=safe%2Fjmp%2Flinux-2.6 diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index 19df881..15eb278 100644 --- a/arch/powerpc/Kconfig.debug +++ b/arch/powerpc/Kconfig.debug @@ -2,41 +2,59 @@ menu "Kernel hacking" source "lib/Kconfig.debug" -config KGDB - bool "Include kgdb kernel debugger" - depends on DEBUG_KERNEL && (BROKEN || PPC_GEN550 || 4xx) - select DEBUG_INFO +config DEBUG_STACKOVERFLOW + bool "Check for stack overflows" + depends on DEBUG_KERNEL help - Include in-kernel hooks for kgdb, the Linux kernel source level - debugger. See for more information. - Unless you are intending to debug the kernel, say N here. + This option will cause messages to be printed if free stack space + drops below a certain limit. -choice - prompt "Serial Port" - depends on KGDB - default KGDB_TTYS1 +config DEBUG_STACK_USAGE + bool "Stack utilization instrumentation" + depends on DEBUG_KERNEL + 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. -config KGDB_TTYS0 - bool "ttyS0" + This option will slow down process creation somewhat. -config KGDB_TTYS1 - bool "ttyS1" +config DEBUG_PAGEALLOC + bool "Debug page memory allocations" + depends on DEBUG_KERNEL && !HIBERNATION + help + Unmap pages from the kernel linear mapping after free_pages(). + This results in a large slowdown, but helps to find certain types + of memory corruptions. -config KGDB_TTYS2 - bool "ttyS2" -config KGDB_TTYS3 - bool "ttyS3" +config HCALL_STATS + bool "Hypervisor call instrumentation" + depends on PPC_PSERIES && DEBUG_FS + 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. -endchoice + This option will add a small amount of overhead to all hypervisor + calls. -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 CODE_PATCHING_SELFTEST + bool "Run self-tests of the code-patching code." + depends on DEBUG_KERNEL + default 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" @@ -44,10 +62,57 @@ config XMON 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 IRQSTACKS + bool "Use separate kernel stacks when processing interrupts" + 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. + +config VIRQ_DEBUG + bool "Expose hardware/virtual IRQ mapping via debugfs" + depends on DEBUG_FS + help + This option will show the mapping relationship between hardware irq + numbers and virtual irq numbers. The mapping is exposed via debugfs + in the file powerpc/virq_mapping. + + If you don't know what this means you don't need it. config BDI_SWITCH bool "Include BDI-2000 user context switcher" - depends on DEBUG_KERNEL + 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 @@ -55,19 +120,140 @@ 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_MULTIPLATFORM 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_EARLY_DEBUG + bool "Early debugging (dangerous)" + # 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 !KVM + 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 -config PPC_OCP - bool - depends on IBM_OCP || XILINX_OCP - default y +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_LPAR + bool "LPAR HV Console" + depends on PPC_PSERIES + help + Select this to enable early debugging for a machine with a HVC + console on vterm 0. + +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_ISERIES + bool "iSeries HV Console" + depends on PPC_ISERIES + 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. + +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 Celleb with Beat. + +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 + 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. + +endchoice + +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. endmenu