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Linux/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

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