projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | menu "Kernel hacking" |
| 2 | ||
| 3 | source "lib/Kconfig.debug" | |
| 4 | ||
| 5 | config SH_STANDARD_BIOS | |
| 6 | bool "Use LinuxSH standard BIOS" | |
| 7 | help | |
| 8 | Say Y here if your target has the gdb-sh-stub | |
| 9 | package from www.m17n.org (or any conforming standard LinuxSH BIOS) | |
| 10 | in FLASH or EPROM. The kernel will use standard BIOS calls during | |
| 11 | boot for various housekeeping tasks (including calls to read and | |
| 12 | write characters to a system console, get a MAC address from an | |
| 13 | on-board Ethernet interface, and shut down the hardware). Note this | |
| 14 | does not work with machines with an existing operating system in | |
| 15 | mask ROM and no flash (WindowsCE machines fall in this category). | |
| 16 | If unsure, say N. | |
| 17 | ||
| 18 | config EARLY_SCIF_CONSOLE | |
| 19 | bool "Use early SCIF console" | |
| 6fc21b82 PM |
20 | help |
| 21 | This enables an early console using a fixed SCIF port. This can | |
| 22 | be used by platforms that are either not running the SH | |
| 23 | standard BIOS, or do not wish to use the BIOS callbacks for the | |
| 24 | serial I/O. | |
| 25 | ||
| 26 | config EARLY_SCIF_CONSOLE_PORT | |
| 27 | hex "SCIF port for early console" | |
| 28 | depends on EARLY_SCIF_CONSOLE | |
| 29 | default "0xffe00000" if CPU_SUBTYPE_SH7780 | |
| 30 | default "0xfffe9800" if CPU_SUBTYPE_SH72060 | |
| 31 | default "0xffe80000" if CPU_SH4 | |
| 1da177e4 LT |
32 | |
| 33 | config EARLY_PRINTK | |
| 34 | bool "Early printk support" | |
| 35 | depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE | |
| 36 | help | |
| 37 | Say Y here to redirect kernel printk messages to the serial port | |
| 38 | used by the SH-IPL bootloader, starting very early in the boot | |
| 39 | process and ending when the kernel's serial console is initialised. | |
| 40 | This option is only useful porting the kernel to a new machine, | |
| 41 | when the kernel may crash or hang before the serial console is | |
| 42 | initialised. If unsure, say N. | |
| 43 | ||
| 6fc21b82 PM |
44 | On devices that are running SH-IPL and want to keep the port |
| 45 | initialization consistent while not using the BIOS callbacks, | |
| 46 | select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using | |
| 47 | the kernel command line option to toggle back and forth. | |
| 48 | ||
| d153ea88 PM |
49 | config DEBUG_STACKOVERFLOW |
| 50 | bool "Check for stack overflows" | |
| 51 | depends on DEBUG_KERNEL | |
| 52 | help | |
| 53 | This option will cause messages to be printed if free stack space | |
| 54 | drops below a certain limit. | |
| 55 | ||
| 56 | config DEBUG_STACK_USAGE | |
| 57 | bool "Stack utilization instrumentation" | |
| 58 | depends on DEBUG_KERNEL | |
| 59 | help | |
| 60 | Enables the display of the minimum amount of free stack which each | |
| 61 | task has ever had available in the sysrq-T and sysrq-P debug output. | |
| 62 | ||
| 63 | This option will slow down process creation somewhat. | |
| 64 | ||
| a6a31139 PM |
65 | config 4KSTACKS |
| 66 | bool "Use 4Kb for kernel stacks instead of 8Kb" | |
| 67 | depends on DEBUG_KERNEL | |
| 68 | help | |
| 69 | If you say Y here the kernel will use a 4Kb stacksize for the | |
| 70 | kernel stack attached to each process/thread. This facilitates | |
| 71 | running more threads on a system and also reduces the pressure | |
| 72 | on the VM subsystem for higher order allocations. This option | |
| 73 | will also use IRQ stacks to compensate for the reduced stackspace. | |
| 74 | ||
| 1da177e4 LT |
75 | config KGDB |
| 76 | bool "Include KGDB kernel debugger" | |
| 2549b322 | 77 | select FRAME_POINTER |
| 1da177e4 LT |
78 | help |
| 79 | Include in-kernel hooks for kgdb, the Linux kernel source level | |
| 80 | debugger. See <http://kgdb.sourceforge.net/> for more information. | |
| 81 | Unless you are intending to debug the kernel, say N here. | |
| 82 | ||
| 83 | menu "KGDB configuration options" | |
| 84 | depends on KGDB | |
| 85 | ||
| 86 | config MORE_COMPILE_OPTIONS | |
| 87 | bool "Add any additional compile options" | |
| 88 | help | |
| 89 | If you want to add additional CFLAGS to the kernel build, enable this | |
| 90 | option and then enter what you would like to add in the next question. | |
| 91 | Note however that -g is already appended with the selection of KGDB. | |
| 92 | ||
| 93 | config COMPILE_OPTIONS | |
| 94 | string "Additional compile arguments" | |
| 95 | depends on MORE_COMPILE_OPTIONS | |
| 96 | ||
| 97 | config KGDB_NMI | |
| 98 | bool "Enter KGDB on NMI" | |
| 99 | default n | |
| 100 | ||
| 101 | config KGDB_THREAD | |
| 102 | bool "Include KGDB thread support" | |
| 103 | default y | |
| 104 | ||
| 105 | config SH_KGDB_CONSOLE | |
| 106 | bool "Console messages through GDB" | |
| 107 | default n | |
| 108 | ||
| 109 | config KGDB_SYSRQ | |
| 110 | bool "Allow SysRq 'G' to enter KGDB" | |
| 111 | default y | |
| 112 | ||
| 113 | config KGDB_KERNEL_ASSERTS | |
| 114 | bool "Include KGDB kernel assertions" | |
| 115 | default n | |
| 116 | ||
| 117 | comment "Serial port setup" | |
| 118 | ||
| 119 | config KGDB_DEFPORT | |
| 120 | int "Port number (ttySCn)" | |
| 121 | default "1" | |
| 122 | ||
| 123 | config KGDB_DEFBAUD | |
| 124 | int "Baud rate" | |
| 125 | default "115200" | |
| 126 | ||
| 127 | choice | |
| 128 | prompt "Parity" | |
| 129 | depends on KGDB | |
| 130 | default KGDB_DEFPARITY_N | |
| 131 | ||
| 132 | config KGDB_DEFPARITY_N | |
| 133 | bool "None" | |
| 134 | ||
| 135 | config KGDB_DEFPARITY_E | |
| 136 | bool "Even" | |
| 137 | ||
| 138 | config KGDB_DEFPARITY_O | |
| 139 | bool "Odd" | |
| 140 | ||
| 141 | endchoice | |
| 142 | ||
| 143 | choice | |
| 144 | prompt "Data bits" | |
| 145 | depends on KGDB | |
| 146 | default KGDB_DEFBITS_8 | |
| 147 | ||
| 148 | config KGDB_DEFBITS_8 | |
| 149 | bool "8" | |
| 150 | ||
| 151 | config KGDB_DEFBITS_7 | |
| 152 | bool "7" | |
| 153 | ||
| 154 | endchoice | |
| 155 | ||
| 156 | endmenu | |
| 157 | ||
| 1da177e4 | 158 | endmenu |