1menu "Kernel hacking" 2 3config TRACE_IRQFLAGS_SUPPORT 4 bool 5 default y 6 7source "lib/Kconfig.debug" 8 9config SH_STANDARD_BIOS 10 bool "Use LinuxSH standard BIOS" 11 help 12 Say Y here if your target has the gdb-sh-stub 13 package from www.m17n.org (or any conforming standard LinuxSH BIOS) 14 in FLASH or EPROM. The kernel will use standard BIOS calls during 15 boot for various housekeeping tasks (including calls to read and 16 write characters to a system console, get a MAC address from an 17 on-board Ethernet interface, and shut down the hardware). Note this 18 does not work with machines with an existing operating system in 19 mask ROM and no flash (WindowsCE machines fall in this category). 20 If unsure, say N. 21 22config EARLY_SCIF_CONSOLE 23 bool "Use early SCIF console" 24 help 25 This enables an early console using a fixed SCIF port. This can 26 be used by platforms that are either not running the SH 27 standard BIOS, or do not wish to use the BIOS callbacks for the 28 serial I/O. 29 30config EARLY_SCIF_CONSOLE_PORT 31 hex "SCIF port for early console" 32 depends on EARLY_SCIF_CONSOLE 33 default "0xffe00000" if CPU_SUBTYPE_SH7780 34 default "0xfffe9800" if CPU_SUBTYPE_SH7206 35 default "0xf8420000" if CPU_SUBTYPE_SH7619 36 default "0xffe80000" if CPU_SH4 37 38config EARLY_PRINTK 39 bool "Early printk support" 40 depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE 41 help 42 Say Y here to redirect kernel printk messages to the serial port 43 used by the SH-IPL bootloader, starting very early in the boot 44 process and ending when the kernel's serial console is initialised. 45 This option is only useful porting the kernel to a new machine, 46 when the kernel may crash or hang before the serial console is 47 initialised. If unsure, say N. 48 49 On devices that are running SH-IPL and want to keep the port 50 initialization consistent while not using the BIOS callbacks, 51 select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using 52 the kernel command line option to toggle back and forth. 53 54config DEBUG_STACKOVERFLOW 55 bool "Check for stack overflows" 56 depends on DEBUG_KERNEL 57 help 58 This option will cause messages to be printed if free stack space 59 drops below a certain limit. 60 61config DEBUG_STACK_USAGE 62 bool "Stack utilization instrumentation" 63 depends on DEBUG_KERNEL 64 help 65 Enables the display of the minimum amount of free stack which each 66 task has ever had available in the sysrq-T and sysrq-P debug output. 67 68 This option will slow down process creation somewhat. 69 70config 4KSTACKS 71 bool "Use 4Kb for kernel stacks instead of 8Kb" 72 depends on DEBUG_KERNEL 73 help 74 If you say Y here the kernel will use a 4Kb stacksize for the 75 kernel stack attached to each process/thread. This facilitates 76 running more threads on a system and also reduces the pressure 77 on the VM subsystem for higher order allocations. This option 78 will also use IRQ stacks to compensate for the reduced stackspace. 79 80config KGDB 81 bool "Include KGDB kernel debugger" 82 select FRAME_POINTER 83 help 84 Include in-kernel hooks for kgdb, the Linux kernel source level 85 debugger. See <http://kgdb.sourceforge.net/> for more information. 86 Unless you are intending to debug the kernel, say N here. 87 88menu "KGDB configuration options" 89 depends on KGDB 90 91config MORE_COMPILE_OPTIONS 92 bool "Add any additional compile options" 93 help 94 If you want to add additional CFLAGS to the kernel build, enable this 95 option and then enter what you would like to add in the next question. 96 Note however that -g is already appended with the selection of KGDB. 97 98config COMPILE_OPTIONS 99 string "Additional compile arguments" 100 depends on MORE_COMPILE_OPTIONS 101 102config KGDB_NMI 103 bool "Enter KGDB on NMI" 104 default n 105 106config KGDB_THREAD 107 bool "Include KGDB thread support" 108 default y 109 110config SH_KGDB_CONSOLE 111 bool "Console messages through GDB" 112 default n 113 114config KGDB_SYSRQ 115 bool "Allow SysRq 'G' to enter KGDB" 116 default y 117 118config KGDB_KERNEL_ASSERTS 119 bool "Include KGDB kernel assertions" 120 default n 121 122comment "Serial port setup" 123 124config KGDB_DEFPORT 125 int "Port number (ttySCn)" 126 default "1" 127 128config KGDB_DEFBAUD 129 int "Baud rate" 130 default "115200" 131 132choice 133 prompt "Parity" 134 depends on KGDB 135 default KGDB_DEFPARITY_N 136 137config KGDB_DEFPARITY_N 138 bool "None" 139 140config KGDB_DEFPARITY_E 141 bool "Even" 142 143config KGDB_DEFPARITY_O 144 bool "Odd" 145 146endchoice 147 148choice 149 prompt "Data bits" 150 depends on KGDB 151 default KGDB_DEFBITS_8 152 153config KGDB_DEFBITS_8 154 bool "8" 155 156config KGDB_DEFBITS_7 157 bool "7" 158 159endchoice 160 161endmenu 162 163endmenu 164