2005-09-26 10:04:21 +04:00
|
|
|
menu "Kernel hacking"
|
|
|
|
|
|
|
|
|
|
source "lib/Kconfig.debug"
|
|
|
|
|
|
2005-10-10 16:15:52 +04:00
|
|
|
config DEBUG_STACKOVERFLOW
|
|
|
|
|
bool "Check for stack overflows"
|
2007-01-30 09:45:56 +03:00
|
|
|
depends on DEBUG_KERNEL
|
2005-10-10 16:15:52 +04:00
|
|
|
help
|
|
|
|
|
This option will cause messages to be printed if free stack space
|
|
|
|
|
drops below a certain limit.
|
|
|
|
|
|
|
|
|
|
config DEBUG_STACK_USAGE
|
|
|
|
|
bool "Stack utilization instrumentation"
|
2007-01-30 09:45:56 +03:00
|
|
|
depends on DEBUG_KERNEL
|
2005-10-10 16:15:52 +04:00
|
|
|
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.
|
|
|
|
|
|
|
|
|
|
This option will slow down process creation somewhat.
|
|
|
|
|
|
2007-04-12 09:30:22 +04:00
|
|
|
config DEBUG_PAGEALLOC
|
|
|
|
|
bool "Debug page memory allocations"
|
2007-07-30 01:24:36 +04:00
|
|
|
depends on DEBUG_KERNEL && !HIBERNATION
|
2007-04-12 09:30:22 +04:00
|
|
|
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.
|
|
|
|
|
|
|
|
|
|
|
2006-09-07 03:23:12 +04:00
|
|
|
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
|
2007-05-09 09:12:20 +04:00
|
|
|
the amount of time spent in hypervisor calls. Wall time spent in
|
2006-09-07 03:23:12 +04:00
|
|
|
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.
|
|
|
|
|
|
2005-10-10 16:15:52 +04:00
|
|
|
config DEBUGGER
|
|
|
|
|
bool "Enable debugger hooks"
|
|
|
|
|
depends on DEBUG_KERNEL
|
|
|
|
|
help
|
|
|
|
|
Include in-kernel hooks for kernel debuggers. Unless you are
|
|
|
|
|
intending to debug the kernel, say N here.
|
|
|
|
|
|
2005-09-26 10:04:21 +04:00
|
|
|
config KGDB
|
|
|
|
|
bool "Include kgdb kernel debugger"
|
2005-10-10 16:15:52 +04:00
|
|
|
depends on DEBUGGER && (BROKEN || PPC_GEN550 || 4xx)
|
2005-09-26 10:04:21 +04:00
|
|
|
select DEBUG_INFO
|
|
|
|
|
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.
|
|
|
|
|
|
2008-06-24 05:32:32 +04:00
|
|
|
config CODE_PATCHING_SELFTEST
|
|
|
|
|
bool "Run self-tests of the code-patching code."
|
|
|
|
|
depends on DEBUG_KERNEL
|
|
|
|
|
default n
|
|
|
|
|
|
2008-06-24 05:33:03 +04:00
|
|
|
config FTR_FIXUP_SELFTEST
|
|
|
|
|
bool "Run self-tests of the feature-fixup code."
|
|
|
|
|
depends on DEBUG_KERNEL
|
|
|
|
|
default n
|
|
|
|
|
|
2005-09-26 10:04:21 +04:00
|
|
|
choice
|
|
|
|
|
prompt "Serial Port"
|
|
|
|
|
depends on KGDB
|
|
|
|
|
default KGDB_TTYS1
|
|
|
|
|
|
|
|
|
|
config KGDB_TTYS0
|
|
|
|
|
bool "ttyS0"
|
|
|
|
|
|
|
|
|
|
config KGDB_TTYS1
|
|
|
|
|
bool "ttyS1"
|
|
|
|
|
|
|
|
|
|
config KGDB_TTYS2
|
|
|
|
|
bool "ttyS2"
|
|
|
|
|
|
|
|
|
|
config KGDB_TTYS3
|
|
|
|
|
bool "ttyS3"
|
|
|
|
|
|
|
|
|
|
endchoice
|
|
|
|
|
|
|
|
|
|
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 XMON
|
|
|
|
|
bool "Include xmon kernel debugger"
|
2006-11-30 03:44:09 +03:00
|
|
|
depends on DEBUGGER
|
2005-09-26 10:04:21 +04:00
|
|
|
help
|
|
|
|
|
Include in-kernel hooks for the xmon kernel monitor/debugger.
|
|
|
|
|
Unless you are intending to debug the kernel, say N here.
|
2005-10-10 16:15:52 +04:00
|
|
|
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.
|
2006-09-08 18:29:21 +04:00
|
|
|
xmon will print a backtrace on the very first invocation.
|
|
|
|
|
'xmon=nobt' will disable this autobacktrace.
|
2005-10-10 16:15:52 +04:00
|
|
|
|
|
|
|
|
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.
|
|
|
|
|
|
2006-11-23 02:46:45 +03:00
|
|
|
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.
|
|
|
|
|
|
2005-10-10 16:15:52 +04:00
|
|
|
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.
|
2005-09-26 10:04:21 +04:00
|
|
|
|
2007-08-28 12:47:57 +04:00
|
|
|
config VIRQ_DEBUG
|
|
|
|
|
bool "Expose hardware/virtual IRQ mapping via debugfs"
|
|
|
|
|
depends on DEBUG_FS && PPC_MERGE
|
|
|
|
|
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.
|
|
|
|
|
|
2005-09-26 10:04:21 +04:00
|
|
|
config BDI_SWITCH
|
|
|
|
|
bool "Include BDI-2000 user context switcher"
|
2005-10-10 16:15:52 +04:00
|
|
|
depends on DEBUG_KERNEL && PPC32
|
2005-09-26 10:04:21 +04:00
|
|
|
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)"
|
2007-09-26 22:02:52 +04:00
|
|
|
depends on PPC_OF && PPC_MULTIPLATFORM
|
2005-09-26 10:04:21 +04:00
|
|
|
help
|
|
|
|
|
Say Y here to see progress messages from the boot firmware in text
|
|
|
|
|
mode. Requires either BootX or Open Firmware.
|
|
|
|
|
|
2006-05-09 10:03:51 +04:00
|
|
|
config PPC_EARLY_DEBUG
|
|
|
|
|
bool "Early debugging (dangerous)"
|
2008-04-17 08:28:09 +04:00
|
|
|
# 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
|
2007-12-11 06:48:24 +03:00
|
|
|
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
|
2006-05-09 10:03:51 +04:00
|
|
|
|
2006-01-11 03:54:09 +03:00
|
|
|
choice
|
2006-05-09 10:03:51 +04:00
|
|
|
prompt "Early debugging console"
|
|
|
|
|
depends on PPC_EARLY_DEBUG
|
2006-01-11 03:54:09 +03:00
|
|
|
help
|
2006-05-09 10:03:51 +04:00
|
|
|
Use the selected console for early debugging. Careful, if you
|
|
|
|
|
enable debugging for the wrong type of machine your kernel
|
|
|
|
|
_will not boot_.
|
2006-01-11 03:54:09 +03:00
|
|
|
|
|
|
|
|
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.
|
|
|
|
|
|
2006-06-23 12:20:16 +04:00
|
|
|
config PPC_EARLY_DEBUG_RTAS_PANEL
|
2006-01-11 03:54:09 +03:00
|
|
|
bool "RTAS Panel"
|
|
|
|
|
depends on PPC_RTAS
|
|
|
|
|
help
|
|
|
|
|
Select this to enable early debugging via the RTAS panel.
|
|
|
|
|
|
2006-06-23 12:20:16 +04:00
|
|
|
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.
|
|
|
|
|
|
2006-01-11 03:54:09 +03:00
|
|
|
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.
|
|
|
|
|
|
2007-02-05 01:36:49 +03:00
|
|
|
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.
|
|
|
|
|
|
2007-02-02 10:47:17 +03:00
|
|
|
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.
|
|
|
|
|
|
2007-05-08 06:59:31 +04:00
|
|
|
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
|
2007-12-21 07:39:28 +03:00
|
|
|
inbuilt serial port. If you enable this, ensure you set
|
|
|
|
|
PPC_EARLY_DEBUG_44x_PHYSLOW below to suit your target board.
|
2007-05-08 06:59:31 +04:00
|
|
|
|
2007-12-21 07:39:26 +03:00
|
|
|
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.
|
|
|
|
|
|
2007-07-16 20:43:43 +04:00
|
|
|
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.
|
|
|
|
|
|
2006-01-11 03:54:09 +03:00
|
|
|
endchoice
|
|
|
|
|
|
2007-05-08 06:59:31 +04:00
|
|
|
config PPC_EARLY_DEBUG_44x_PHYSLOW
|
|
|
|
|
hex "Low 32 bits of early debug UART physical address"
|
2007-09-26 22:02:52 +04:00
|
|
|
depends on PPC_EARLY_DEBUG_44x
|
2007-05-08 06:59:31 +04:00
|
|
|
default "0x40000200"
|
2007-12-21 07:39:28 +03:00
|
|
|
help
|
|
|
|
|
You probably want 0x40000200 for ebony boards and
|
|
|
|
|
0x40000300 for taishan
|
2007-05-08 06:59:31 +04:00
|
|
|
|
|
|
|
|
config PPC_EARLY_DEBUG_44x_PHYSHIGH
|
|
|
|
|
hex "EPRN of early debug UART physical address"
|
2007-09-26 22:02:52 +04:00
|
|
|
depends on PPC_EARLY_DEBUG_44x
|
2007-05-08 06:59:31 +04:00
|
|
|
default "0x1"
|
|
|
|
|
|
2007-12-21 07:39:26 +03:00
|
|
|
config PPC_EARLY_DEBUG_40x_PHYSADDR
|
|
|
|
|
hex "Early debug UART physical address"
|
|
|
|
|
depends on PPC_EARLY_DEBUG_40x
|
|
|
|
|
default "0xef600300"
|
|
|
|
|
|
2007-07-16 20:43:43 +04:00
|
|
|
config PPC_EARLY_DEBUG_CPM_ADDR
|
|
|
|
|
hex "CPM UART early debug transmit descriptor address"
|
|
|
|
|
depends on PPC_EARLY_DEBUG_CPM
|
2007-09-28 23:06:16 +04:00
|
|
|
default "0xfa202008" if PPC_EP88XC
|
2008-04-10 19:01:59 +04:00
|
|
|
default "0xf0001ff8" if CPM2
|
2007-09-28 23:06:16 +04:00
|
|
|
default "0xff002008" if CPM1
|
2007-07-16 20:43:43 +04:00
|
|
|
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.
|
|
|
|
|
|
2005-09-26 10:04:21 +04:00
|
|
|
endmenu
|
