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 32 depends on EARLY_SCIF_CONSOLE 33 default "0xffe00000" if CPU_SUBTYPE_SH7780 34 default "0xffea0000" if CPU_SUBTYPE_SH7785 35 default "0xfffe9800" if CPU_SUBTYPE_SH7206 36 default "0xf8420000" if CPU_SUBTYPE_SH7619 37 default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705 38 default "0xa4430000" if CPU_SUBTYPE_SH7720 39 default "0xffc30000" if CPU_SUBTYPE_SHX3 40 default "0xffe80000" if CPU_SH4 41 default "0x00000000" 42 43config EARLY_PRINTK 44 bool "Early printk support" 45 depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE 46 help 47 Say Y here to redirect kernel printk messages to the serial port 48 used by the SH-IPL bootloader, starting very early in the boot 49 process and ending when the kernel's serial console is initialised. 50 This option is only useful porting the kernel to a new machine, 51 when the kernel may crash or hang before the serial console is 52 initialised. If unsure, say N. 53 54 On devices that are running SH-IPL and want to keep the port 55 initialization consistent while not using the BIOS callbacks, 56 select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using 57 the kernel command line option to toggle back and forth. 58 59config DEBUG_BOOTMEM 60 depends on DEBUG_KERNEL 61 bool "Debug BOOTMEM initialization" 62 63config DEBUG_STACKOVERFLOW 64 bool "Check for stack overflows" 65 depends on DEBUG_KERNEL 66 help 67 This option will cause messages to be printed if free stack space 68 drops below a certain limit. 69 70config DEBUG_STACK_USAGE 71 bool "Stack utilization instrumentation" 72 depends on DEBUG_KERNEL 73 help 74 Enables the display of the minimum amount of free stack which each 75 task has ever had available in the sysrq-T and sysrq-P debug output. 76 77 This option will slow down process creation somewhat. 78 79config 4KSTACKS 80 bool "Use 4Kb for kernel stacks instead of 8Kb" 81 depends on DEBUG_KERNEL 82 help 83 If you say Y here the kernel will use a 4Kb stacksize for the 84 kernel stack attached to each process/thread. This facilitates 85 running more threads on a system and also reduces the pressure 86 on the VM subsystem for higher order allocations. This option 87 will also use IRQ stacks to compensate for the reduced stackspace. 88 89config SH_KGDB 90 bool "Include KGDB kernel debugger" 91 select FRAME_POINTER 92 select DEBUG_INFO 93 depends on CPU_SH3 || CPU_SH4 94 help 95 Include in-kernel hooks for kgdb, the Linux kernel source level 96 debugger. See <http://kgdb.sourceforge.net/> for more information. 97 Unless you are intending to debug the kernel, say N here. 98 99menu "KGDB configuration options" 100 depends on SH_KGDB 101 102config MORE_COMPILE_OPTIONS 103 bool "Add any additional compile options" 104 help 105 If you want to add additional CFLAGS to the kernel build, enable this 106 option and then enter what you would like to add in the next question. 107 Note however that -g is already appended with the selection of KGDB. 108 109config COMPILE_OPTIONS 110 string "Additional compile arguments" 111 depends on MORE_COMPILE_OPTIONS 112 113config KGDB_NMI 114 bool "Enter KGDB on NMI" 115 default n 116 117config SH_KGDB_CONSOLE 118 bool "Console messages through GDB" 119 depends on !SERIAL_SH_SCI_CONSOLE 120 select SERIAL_CORE_CONSOLE 121 default n 122 123config KGDB_SYSRQ 124 bool "Allow SysRq 'G' to enter KGDB" 125 default y 126 127comment "Serial port setup" 128 129config KGDB_DEFPORT 130 int "Port number (ttySCn)" 131 default "1" 132 133config KGDB_DEFBAUD 134 int "Baud rate" 135 default "115200" 136 137choice 138 prompt "Parity" 139 depends on SH_KGDB 140 default KGDB_DEFPARITY_N 141 142config KGDB_DEFPARITY_N 143 bool "None" 144 145config KGDB_DEFPARITY_E 146 bool "Even" 147 148config KGDB_DEFPARITY_O 149 bool "Odd" 150 151endchoice 152 153choice 154 prompt "Data bits" 155 depends on SH_KGDB 156 default KGDB_DEFBITS_8 157 158config KGDB_DEFBITS_8 159 bool "8" 160 161config KGDB_DEFBITS_7 162 bool "7" 163 164endchoice 165 166endmenu 167 168endmenu 169