69 lines
2.1 KiB
Plaintext
69 lines
2.1 KiB
Plaintext
|
menu "Kernel hacking"
|
||
|
|
|
||
|
|
source "lib/Kconfig.debug"
|
||
|
|
|
||
|
|
config STRICT_DEVMEM
|
||
|
|
bool "Filter access to /dev/mem"
|
||
|
|
depends on MMU
|
||
|
|
---help---
|
||
|
|
If this option is disabled, you allow userspace (root) access to all
|
||
|
|
of memory, including kernel and userspace memory. Accidental
|
||
|
|
access to this is obviously disastrous, but specific access can
|
||
|
|
be used by people debugging the kernel.
|
||
|
|
|
||
|
|
If this option is switched on, the /dev/mem file only allows
|
||
|
|
userspace access to memory mapped peripherals.
|
||
|
|
|
||
|
|
If in doubt, say Y.
|
||
|
|
|
||
|
|
config EARLY_PRINTK
|
||
|
|
def_bool DEBUG_OCD
|
||
|
|
help
|
||
|
|
Write kernel log output directly into the ocd or to a serial port.
|
||
|
|
|
||
|
|
This is useful for kernel debugging when your machine crashes very
|
||
|
|
early before the console code is initialized. For normal operation
|
||
|
|
it is not recommended because it looks ugly and doesn't cooperate
|
||
|
|
with klogd/syslogd or the X server. You should normally N here,
|
||
|
|
unless you want to debug such a crash.
|
||
|
|
|
||
|
|
config DEBUG_STACK_USAGE
|
||
|
|
bool "Enable 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 output.
|
||
|
|
|
||
|
|
# These options are only for real kernel hackers who want to get their hands dirty.
|
||
|
|
config DEBUG_LL
|
||
|
|
bool "Kernel low-level debugging functions"
|
||
|
|
depends on DEBUG_KERNEL
|
||
|
|
help
|
||
|
|
Say Y here to include definitions of printascii, printch, printhex
|
||
|
|
in the kernel. This is helpful if you are debugging code that
|
||
|
|
executes before the console is initialized.
|
||
|
|
|
||
|
|
config DEBUG_OCD
|
||
|
|
bool "Kernel low-level debugging via On-Chip-Debugger"
|
||
|
|
depends on DEBUG_LL
|
||
|
|
default y
|
||
|
|
help
|
||
|
|
Say Y here if you want the debug print routines to direct their
|
||
|
|
output to the UniCore On-Chip-Debugger channel using CP #1.
|
||
|
|
|
||
|
|
config DEBUG_OCD_BREAKPOINT
|
||
|
|
bool "Breakpoint support via On-Chip-Debugger"
|
||
|
|
depends on DEBUG_OCD
|
||
|
|
|
||
|
|
config DEBUG_UART
|
||
|
|
int "Kernel low-level debugging messages via serial port"
|
||
|
|
depends on DEBUG_LL
|
||
|
|
range 0 1
|
||
|
|
default "0"
|
||
|
|
help
|
||
|
|
Choice for UART for kernel low-level using PKUnity UARTS,
|
||
|
|
should be between zero and one. The port must have been
|
||
|
|
initialised by the boot-loader before use.
|
||
|
|
|
||
|
|
endmenu
|