arch/mips/Kconfig.debug

   1 menu "Kernel hacking"
   2
   3 config TRACE_IRQFLAGS_SUPPORT
   4         bool
   5         default y
   6
   7 source "lib/Kconfig.debug"
   8
   9 config EARLY_PRINTK
  10         bool "Early printk" if EXPERT
  11         depends on SYS_HAS_EARLY_PRINTK
  12         default y
  13         help
  14           This option enables special console drivers which allow the kernel
  15           to print messages very early in the bootup process.
  16
  17           This is useful for kernel debugging when your machine crashes very
  18           early before the console code is initialized. For normal operation,
  19           it is not recommended because it looks ugly on some machines and
  20           doesn't cooperate with an X server. You should normally say N here,
  21           unless you want to debug such a crash.
  22
  23 config EARLY_PRINTK_8250
  24         bool
  25         depends on EARLY_PRINTK && USE_GENERIC_EARLY_PRINTK_8250
  26         default y
  27         help
  28           "8250/16550 and compatible serial early printk driver"
  29           If you say Y here, it will be possible to use a 8250/16550 serial
  30           port as the boot console.
  31
  32 config USE_GENERIC_EARLY_PRINTK_8250
  33         bool
  34
  35 config CMDLINE_BOOL
  36         bool "Built-in kernel command line"
  37         default n
  38         help
  39           For most systems, it is firmware or second stage bootloader that
  40           by default specifies the kernel command line options.  However,
  41           it might be necessary or advantageous to either override the
  42           default kernel command line or add a few extra options to it.
  43           For such cases, this option allows you to hardcode your own
  44           command line options directly into the kernel.  For that, you
  45           should choose 'Y' here, and fill in the extra boot arguments
  46           in CONFIG_CMDLINE.
  47
  48           The built-in options will be concatenated to the default command
  49           line if CMDLINE_OVERRIDE is set to 'N'. Otherwise, the default
  50           command line will be ignored and replaced by the built-in string.
  51
  52           Most MIPS systems will normally expect 'N' here and rely upon
  53           the command line from the firmware or the second-stage bootloader.
  54
  55 config CMDLINE
  56         string "Default kernel command string"
  57         depends on CMDLINE_BOOL
  58         default ""
  59         help
  60           On some platforms, there is currently no way for the boot loader to
  61           pass arguments to the kernel.  For these platforms, and for the cases
  62           when you want to add some extra options to the command line or ignore
  63           the default command line, you can supply some command-line options at
  64           build time by entering them here.  In other cases you can specify
  65           kernel args so that you don't have to set them up in board prom
  66           initialization routines.
  67
  68           For more information, see the CMDLINE_BOOL and CMDLINE_OVERRIDE
  69           options.
  70
  71 config CMDLINE_OVERRIDE
  72         bool "Built-in command line overrides firmware arguments"
  73         default n
  74         depends on CMDLINE_BOOL
  75         help
  76           By setting this option to 'Y' you will have your kernel ignore
  77           command line arguments from firmware or second stage bootloader.
  78           Instead, the built-in command line will be used exclusively.
  79
  80           Normally, you will choose 'N' here.
  81
  82 config SMTC_IDLE_HOOK_DEBUG
  83         bool "Enable additional debug checks before going into CPU idle loop"
  84         depends on DEBUG_KERNEL && MIPS_MT_SMTC
  85         help
  86           This option enables Enable additional debug checks before going into
  87           CPU idle loop.  For details on these checks, see
  88           arch/mips/kernel/smtc.c.  This debugging option result in significant
  89           overhead so should be disabled in production kernels.
  90
  91 config SB1XXX_CORELIS
  92         bool "Corelis Debugger"
  93         depends on SIBYTE_SB1xxx_SOC
  94         select DEBUG_INFO
  95         help
  96           Select compile flags that produce code that can be processed by the
  97           Corelis mksym utility and UDB Emulator.
  98
  99 config RUNTIME_DEBUG
 100         bool "Enable run-time debugging"
 101         depends on DEBUG_KERNEL
 102         help
 103           If you say Y here, some debugging macros will do run-time checking.
 104           If you say N here, those macros will mostly turn to no-ops.  See
 105           arch/mips/include/asm/debug.h for debugging macros.
 106           If unsure, say N.
 107
 108 config DEBUG_ZBOOT
 109         bool "Enable compressed kernel support debugging"
 110         depends on DEBUG_KERNEL && SYS_SUPPORTS_ZBOOT
 111         default n
 112         help
 113           If you want to add compressed kernel support to a new board, and the
 114           board supports uart16550 compatible serial port, please select
 115           SYS_SUPPORTS_ZBOOT_UART16550 for your board and enable this option to
 116           debug it.
 117
 118           If your board doesn't support uart16550 compatible serial port, you
 119           can try to select SYS_SUPPORTS_ZBOOT and use the other methods to
 120           debug it. for example, add a new serial port support just as
 121           arch/mips/boot/compressed/uart-16550.c does.
 122
 123           After the compressed kernel support works, please disable this option
 124           to reduce the kernel image size and speed up the booting procedure a
 125           little.
 126
 127 config SPINLOCK_TEST
 128         bool "Enable spinlock timing tests in debugfs"
 129         depends on DEBUG_FS
 130         default n
 131         help
 132           Add several files to the debugfs to test spinlock speed.
 133
 134 endmenu