Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

menu "Kernel hacking"

source "lib/Kconfig.debug"

# RMK wants arm kernels compiled with frame pointers so hardwire this to y.
# If you know what you are doing and are willing to live without stack
# traces, you can get a slightly smaller kernel by setting this option to
# n, but then RMK will have to kill you ;).
config FRAME_POINTER
        bool
        default y
        help
          If you say N here, the resulting kernel will be slightly smaller and
          faster. However, when a problem occurs with the kernel, the
          information that is reported is severely limited. Most people
          should say Y here.

config DEBUG_USER
        bool "Verbose user fault messages"
        help
          When a user program crashes due to an exception, the kernel can
          print a brief message explaining what the problem was. This is
          sometimes helpful for debugging but serves no purpose on a
          production system. Most people should say N here.

          In addition, you need to pass user_debug=N on the kernel command
          line to enable this feature.  N consists of the sum of:

              1 - undefined instruction events
              2 - system calls
              4 - invalid data aborts
              8 - SIGSEGV faults
             16 - SIGBUS faults

config DEBUG_ERRORS
        bool "Verbose kernel error messages"
        depends on DEBUG_KERNEL
        help
          This option controls verbose debugging information which can be
          printed when the kernel detects an internal error. This debugging
          information is useful to kernel hackers when tracking down problems,
          but mostly meaningless to other people. It's safe to say Y unless
          you are concerned with the code size or don't want to see these
          messages.


# 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_ICEDCC
        bool "Kernel low-level debugging via EmbeddedICE DCC channel"
        depends on DEBUG_LL
        help
          Say Y here if you want the debug print routines to direct their
          output to the EmbeddedICE macrocell's DCC channel using
          co-processor 14. This is known to work on the ARM9 style ICE
          channel.

          It does include a timeout to ensure that the system does not
          totally freeze when there is nothing connected to read.

config DEBUG_DC21285_PORT
        bool "Kernel low-level debugging messages via footbridge serial port"
        depends on DEBUG_LL && FOOTBRIDGE
        help
          Say Y here if you want the debug print routines to direct their
          output to the serial port in the DC21285 (Footbridge). Saying N
          will cause the debug messages to appear on the first 16550
          serial port.

config DEBUG_CLPS711X_UART2
        bool "Kernel low-level debugging messages via UART2"
        depends on DEBUG_LL && ARCH_CLPS711X
        help
          Say Y here if you want the debug print routines to direct their
          output to the second serial port on these devices.  Saying N will
          cause the debug messages to appear on the first serial port.

config DEBUG_S3C_PORT
        depends on DEBUG_LL && PLAT_S3C
        bool "Kernel low-level debugging messages via S3C UART"
        help
          Say Y here if you want debug print routines to go to one of the
          S3C internal UARTs. The chosen UART must have been configured
          before it is used.

config DEBUG_S3C_UART
        depends on PLAT_S3C
        int "S3C UART to use for low-level debug"
        default "0"
        help
          Choice for UART for kernel low-level using S3C UARTS,
          should be between zero and two. The port must have been
          initialised by the boot-loader before use.

          The uncompressor code port configuration is now handled
          by CONFIG_S3C_LOWLEVEL_UART_PORT.

endmenu