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