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- 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.
- # 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.
- endmenu
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