| David Howells | b920de1 | 2008-02-08 04:19:31 -0800 | [diff] [blame] | 1 | menu "Kernel hacking" |
| 2 | |
| 3 | source "lib/Kconfig.debug" |
| 4 | |
| 5 | config DEBUG_STACKOVERFLOW |
| 6 | bool "Check for stack overflows" |
| 7 | depends on DEBUG_KERNEL |
| 8 | |
| 9 | config DEBUG_DECOMPRESS_KERNEL |
| 10 | bool "Using serial port during decompressing kernel" |
| 11 | depends on DEBUG_KERNEL |
| 12 | default n |
| 13 | help |
| 14 | If you say Y here you will confirm the start and the end of |
| 15 | decompressing Linux seeing "Uncompressing Linux... " and |
| 16 | "Ok, booting the kernel.\n" on console. |
| 17 | |
| David Howells | 9f55588 | 2008-11-12 15:35:04 +0000 | [diff] [blame] | 18 | config TEST_MISALIGNMENT_HANDLER |
| 19 | bool "Run tests on the misalignment handler" |
| 20 | depends on DEBUG_KERNEL |
| 21 | default n |
| 22 | help |
| 23 | If you say Y here the kernel will execute a list of misaligned memory |
| 24 | accesses to make sure the misalignment handler deals them with |
| 25 | correctly. If it does not, the kernel will throw a BUG. |
| 26 | |
| David Howells | b920de1 | 2008-02-08 04:19:31 -0800 | [diff] [blame] | 27 | config KPROBES |
| 28 | bool "Kprobes" |
| 29 | depends on DEBUG_KERNEL |
| 30 | help |
| 31 | Kprobes allows you to trap at almost any kernel address and |
| 32 | execute a callback function. register_kprobe() establishes |
| 33 | a probepoint and specifies the callback. Kprobes is useful |
| 34 | for kernel debugging, non-intrusive instrumentation and testing. |
| 35 | If in doubt, say "N". |
| 36 | |
| 37 | config GDBSTUB |
| 38 | bool "Remote GDB kernel debugging" |
| 39 | depends on DEBUG_KERNEL |
| 40 | select DEBUG_INFO |
| 41 | select FRAME_POINTER |
| 42 | help |
| 43 | If you say Y here, it will be possible to remotely debug the kernel |
| 44 | using gdb. This enlarges your kernel ELF image disk size by several |
| 45 | megabytes and requires a machine with more than 16 MB, better 32 MB |
| 46 | RAM to avoid excessive linking time. This is only useful for kernel |
| 47 | hackers. If unsure, say N. |
| 48 | |
| 49 | config GDBSTUB_IMMEDIATE |
| 50 | bool "Break into GDB stub immediately" |
| 51 | depends on GDBSTUB |
| 52 | help |
| 53 | If you say Y here, GDB stub will break into the program as soon as |
| 54 | possible, leaving the program counter at the beginning of |
| 55 | start_kernel() in init/main.c. |
| 56 | |
| 57 | config GDB_CONSOLE |
| 58 | bool "Console output to GDB" |
| 59 | depends on GDBSTUB |
| 60 | help |
| 61 | If you are using GDB for remote debugging over a serial port and |
| 62 | would like kernel messages to be formatted into GDB $O packets so |
| 63 | that GDB prints them as program output, say 'Y'. |
| 64 | |
| 65 | config GDBSTUB_DEBUGGING |
| 66 | bool "Debug GDB stub by messages to serial port" |
| 67 | depends on GDBSTUB |
| 68 | help |
| 69 | This causes debugging messages to be displayed at various points |
| 70 | during execution of the GDB stub routines. Such messages will be |
| 71 | displayed on ttyS0 if that isn't the GDB stub's port, or ttySM0 |
| 72 | otherwise. |
| 73 | |
| 74 | config GDBSTUB_DEBUG_ENTRY |
| 75 | bool "Debug GDB stub entry" |
| 76 | depends on GDBSTUB_DEBUGGING |
| 77 | help |
| 78 | This option causes information to be displayed about entry to or exit |
| 79 | from the main GDB stub routine. |
| 80 | |
| 81 | config GDBSTUB_DEBUG_PROTOCOL |
| 82 | bool "Debug GDB stub protocol" |
| 83 | depends on GDBSTUB_DEBUGGING |
| 84 | help |
| 85 | This option causes information to be displayed about the GDB remote |
| 86 | protocol messages generated exchanged with GDB. |
| 87 | |
| 88 | config GDBSTUB_DEBUG_IO |
| 89 | bool "Debug GDB stub I/O" |
| 90 | depends on GDBSTUB_DEBUGGING |
| 91 | help |
| 92 | This option causes information to be displayed about GDB stub's |
| 93 | low-level I/O. |
| 94 | |
| 95 | config GDBSTUB_DEBUG_BREAKPOINT |
| 96 | bool "Debug GDB stub breakpoint management" |
| 97 | depends on GDBSTUB_DEBUGGING |
| 98 | help |
| 99 | This option causes information to be displayed about GDB stub's |
| 100 | breakpoint management. |
| 101 | |
| 102 | choice |
| 103 | prompt "GDB stub port" |
| 104 | default GDBSTUB_TTYSM0 |
| 105 | depends on GDBSTUB |
| 106 | help |
| 107 | Select the serial port used for GDB-stub. |
| 108 | |
| 109 | config GDBSTUB_ON_TTYSM0 |
| 110 | bool "/dev/ttySM0 [SIF0]" |
| 111 | depends on MN10300_TTYSM0 |
| 112 | select GDBSTUB_ON_TTYSMx |
| 113 | |
| 114 | config GDBSTUB_ON_TTYSM1 |
| 115 | bool "/dev/ttySM1 [SIF1]" |
| 116 | depends on MN10300_TTYSM1 |
| 117 | select GDBSTUB_ON_TTYSMx |
| 118 | |
| 119 | config GDBSTUB_ON_TTYSM2 |
| 120 | bool "/dev/ttySM2 [SIF2]" |
| 121 | depends on MN10300_TTYSM2 |
| 122 | select GDBSTUB_ON_TTYSMx |
| 123 | |
| 124 | config GDBSTUB_ON_TTYS0 |
| 125 | bool "/dev/ttyS0" |
| 126 | select GDBSTUB_ON_TTYSx |
| 127 | |
| 128 | config GDBSTUB_ON_TTYS1 |
| 129 | bool "/dev/ttyS1" |
| 130 | select GDBSTUB_ON_TTYSx |
| 131 | |
| 132 | endchoice |
| 133 | |
| 134 | config GDBSTUB_ON_TTYSMx |
| 135 | bool |
| 136 | depends on GDBSTUB_ON_TTYSM0 || GDBSTUB_ON_TTYSM1 || GDBSTUB_ON_TTYSM2 |
| 137 | default y |
| 138 | |
| 139 | config GDBSTUB_ON_TTYSx |
| 140 | bool |
| 141 | depends on GDBSTUB_ON_TTYS0 || GDBSTUB_ON_TTYS1 |
| 142 | default y |
| 143 | |
| 144 | endmenu |