11da177e4SLinus Torvaldsmenu "Kernel hacking" 21da177e4SLinus Torvalds 3afbfb52eSPaul Mundtconfig TRACE_IRQFLAGS_SUPPORT 4d7ef4fb3SHarvey Harrison def_bool y 5afbfb52eSPaul Mundt 61da177e4SLinus Torvaldssource "lib/Kconfig.debug" 71da177e4SLinus Torvalds 81da177e4SLinus Torvaldsconfig SH_STANDARD_BIOS 91da177e4SLinus Torvalds bool "Use LinuxSH standard BIOS" 101a013e2fSPaul Mundt depends on SUPERH32 111da177e4SLinus Torvalds help 121da177e4SLinus Torvalds Say Y here if your target has the gdb-sh-stub 131da177e4SLinus Torvalds package from www.m17n.org (or any conforming standard LinuxSH BIOS) 141da177e4SLinus Torvalds in FLASH or EPROM. The kernel will use standard BIOS calls during 151da177e4SLinus Torvalds boot for various housekeeping tasks (including calls to read and 161da177e4SLinus Torvalds write characters to a system console, get a MAC address from an 171da177e4SLinus Torvalds on-board Ethernet interface, and shut down the hardware). Note this 181da177e4SLinus Torvalds does not work with machines with an existing operating system in 191da177e4SLinus Torvalds mask ROM and no flash (WindowsCE machines fall in this category). 201da177e4SLinus Torvalds If unsure, say N. 211da177e4SLinus Torvalds 221da177e4SLinus Torvaldsconfig EARLY_SCIF_CONSOLE 231da177e4SLinus Torvalds bool "Use early SCIF console" 246fc21b82SPaul Mundt help 256fc21b82SPaul Mundt This enables an early console using a fixed SCIF port. This can 266fc21b82SPaul Mundt be used by platforms that are either not running the SH 276fc21b82SPaul Mundt standard BIOS, or do not wish to use the BIOS callbacks for the 286fc21b82SPaul Mundt serial I/O. 296fc21b82SPaul Mundt 306fc21b82SPaul Mundtconfig EARLY_SCIF_CONSOLE_PORT 318d797cd1SPaul Mundt hex 326fc21b82SPaul Mundt depends on EARLY_SCIF_CONSOLE 332ad69908SPaul Mundt default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705 342ad69908SPaul Mundt default "0xa4430000" if CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721 352ad69908SPaul Mundt default "0xf8420000" if CPU_SUBTYPE_SH7619 362ad69908SPaul Mundt default "0xff804000" if CPU_SUBTYPE_MXG 372ad69908SPaul Mundt default "0xffc30000" if CPU_SUBTYPE_SHX3 382ad69908SPaul Mundt default "0xffe00000" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7763 || \ 392ad69908SPaul Mundt CPU_SUBTYPE_SH7722 || CPU_SUBTYPE_SH7366 402ad69908SPaul Mundt default "0xffe80000" if CPU_SH4 415cbc3af5SMagnus Damm default "0xffea0000" if CPU_SUBTYPE_SH7785 426d01f510SPaul Mundt default "0xfffe8000" if CPU_SUBTYPE_SH7203 43a8f67f4bSPaul Mundt default "0xfffe9800" if CPU_SUBTYPE_SH7206 || CPU_SUBTYPE_SH7263 448d797cd1SPaul Mundt default "0x00000000" 451da177e4SLinus Torvalds 461da177e4SLinus Torvaldsconfig EARLY_PRINTK 471da177e4SLinus Torvalds bool "Early printk support" 481da177e4SLinus Torvalds depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE 491da177e4SLinus Torvalds help 501da177e4SLinus Torvalds Say Y here to redirect kernel printk messages to the serial port 511da177e4SLinus Torvalds used by the SH-IPL bootloader, starting very early in the boot 521da177e4SLinus Torvalds process and ending when the kernel's serial console is initialised. 531da177e4SLinus Torvalds This option is only useful porting the kernel to a new machine, 541da177e4SLinus Torvalds when the kernel may crash or hang before the serial console is 551da177e4SLinus Torvalds initialised. If unsure, say N. 561da177e4SLinus Torvalds 576fc21b82SPaul Mundt On devices that are running SH-IPL and want to keep the port 586fc21b82SPaul Mundt initialization consistent while not using the BIOS callbacks, 596fc21b82SPaul Mundt select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using 606fc21b82SPaul Mundt the kernel command line option to toggle back and forth. 616fc21b82SPaul Mundt 6291e656aaSPaul Mundtconfig DEBUG_BOOTMEM 6391e656aaSPaul Mundt depends on DEBUG_KERNEL 6491e656aaSPaul Mundt bool "Debug BOOTMEM initialization" 6591e656aaSPaul Mundt 66d153ea88SPaul Mundtconfig DEBUG_STACKOVERFLOW 67d153ea88SPaul Mundt bool "Check for stack overflows" 685db141a9SPaul Mundt depends on DEBUG_KERNEL && SUPERH32 69d153ea88SPaul Mundt help 70d153ea88SPaul Mundt This option will cause messages to be printed if free stack space 71d153ea88SPaul Mundt drops below a certain limit. 72d153ea88SPaul Mundt 73d153ea88SPaul Mundtconfig DEBUG_STACK_USAGE 74d153ea88SPaul Mundt bool "Stack utilization instrumentation" 75d153ea88SPaul Mundt depends on DEBUG_KERNEL 76d153ea88SPaul Mundt help 77d153ea88SPaul Mundt Enables the display of the minimum amount of free stack which each 78d153ea88SPaul Mundt task has ever had available in the sysrq-T and sysrq-P debug output. 79d153ea88SPaul Mundt 80d153ea88SPaul Mundt This option will slow down process creation somewhat. 81d153ea88SPaul Mundt 82a6a31139SPaul Mundtconfig 4KSTACKS 83a6a31139SPaul Mundt bool "Use 4Kb for kernel stacks instead of 8Kb" 84a6a31139SPaul Mundt depends on DEBUG_KERNEL 85a6a31139SPaul Mundt help 86a6a31139SPaul Mundt If you say Y here the kernel will use a 4Kb stacksize for the 87a6a31139SPaul Mundt kernel stack attached to each process/thread. This facilitates 88a6a31139SPaul Mundt running more threads on a system and also reduces the pressure 89a6a31139SPaul Mundt on the VM subsystem for higher order allocations. This option 90a6a31139SPaul Mundt will also use IRQ stacks to compensate for the reduced stackspace. 91a6a31139SPaul Mundt 92110ed282SPaul Mundtconfig IRQSTACKS 93110ed282SPaul Mundt bool "Use separate kernel stacks when processing interrupts" 945db141a9SPaul Mundt depends on DEBUG_KERNEL && SUPERH32 95110ed282SPaul Mundt help 96110ed282SPaul Mundt If you say Y here the kernel will use separate kernel stacks 97110ed282SPaul Mundt for handling hard and soft interrupts. This can help avoid 98110ed282SPaul Mundt overflowing the process kernel stacks. 99110ed282SPaul Mundt 100fa5da2f7SPaul Mundtconfig SH_KGDB 1011da177e4SLinus Torvalds bool "Include KGDB kernel debugger" 1022549b322SPaul Mundt select FRAME_POINTER 103fa5da2f7SPaul Mundt select DEBUG_INFO 104357d5946SPaul Mundt depends on CPU_SH3 || CPU_SH4 1051da177e4SLinus Torvalds help 1061da177e4SLinus Torvalds Include in-kernel hooks for kgdb, the Linux kernel source level 1071da177e4SLinus Torvalds debugger. See <http://kgdb.sourceforge.net/> for more information. 1081da177e4SLinus Torvalds Unless you are intending to debug the kernel, say N here. 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvaldsmenu "KGDB configuration options" 111fa5da2f7SPaul Mundt depends on SH_KGDB 1121da177e4SLinus Torvalds 1131da177e4SLinus Torvaldsconfig MORE_COMPILE_OPTIONS 1141da177e4SLinus Torvalds bool "Add any additional compile options" 1151da177e4SLinus Torvalds help 1161da177e4SLinus Torvalds If you want to add additional CFLAGS to the kernel build, enable this 1171da177e4SLinus Torvalds option and then enter what you would like to add in the next question. 1181da177e4SLinus Torvalds Note however that -g is already appended with the selection of KGDB. 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvaldsconfig COMPILE_OPTIONS 1211da177e4SLinus Torvalds string "Additional compile arguments" 1221da177e4SLinus Torvalds depends on MORE_COMPILE_OPTIONS 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvaldsconfig KGDB_NMI 125d7ef4fb3SHarvey Harrison def_bool n 126d7ef4fb3SHarvey Harrison prompt "Enter KGDB on NMI" 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvaldsconfig SH_KGDB_CONSOLE 129d7ef4fb3SHarvey Harrison def_bool n 130d7ef4fb3SHarvey Harrison prompt "Console messages through GDB" 131808bde25SPaul Mundt depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y 132fa5da2f7SPaul Mundt select SERIAL_CORE_CONSOLE 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvaldsconfig KGDB_SYSRQ 135d7ef4fb3SHarvey Harrison def_bool y 136d7ef4fb3SHarvey Harrison prompt "Allow SysRq 'G' to enter KGDB" 1370acc729eSPaul Mundt depends on MAGIC_SYSRQ 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvaldscomment "Serial port setup" 1401da177e4SLinus Torvalds 1411da177e4SLinus Torvaldsconfig KGDB_DEFPORT 1421da177e4SLinus Torvalds int "Port number (ttySCn)" 1431da177e4SLinus Torvalds default "1" 1441da177e4SLinus Torvalds 1451da177e4SLinus Torvaldsconfig KGDB_DEFBAUD 1461da177e4SLinus Torvalds int "Baud rate" 1471da177e4SLinus Torvalds default "115200" 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvaldschoice 1501da177e4SLinus Torvalds prompt "Parity" 151fa5da2f7SPaul Mundt depends on SH_KGDB 1521da177e4SLinus Torvalds default KGDB_DEFPARITY_N 1531da177e4SLinus Torvalds 1541da177e4SLinus Torvaldsconfig KGDB_DEFPARITY_N 1551da177e4SLinus Torvalds bool "None" 1561da177e4SLinus Torvalds 1571da177e4SLinus Torvaldsconfig KGDB_DEFPARITY_E 1581da177e4SLinus Torvalds bool "Even" 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvaldsconfig KGDB_DEFPARITY_O 1611da177e4SLinus Torvalds bool "Odd" 1621da177e4SLinus Torvalds 1631da177e4SLinus Torvaldsendchoice 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvaldschoice 1661da177e4SLinus Torvalds prompt "Data bits" 167fa5da2f7SPaul Mundt depends on SH_KGDB 1681da177e4SLinus Torvalds default KGDB_DEFBITS_8 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvaldsconfig KGDB_DEFBITS_8 1711da177e4SLinus Torvalds bool "8" 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvaldsconfig KGDB_DEFBITS_7 1741da177e4SLinus Torvalds bool "7" 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvaldsendchoice 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvaldsendmenu 1791da177e4SLinus Torvalds 1808214d52aSPaul Mundtif SUPERH64 1818214d52aSPaul Mundt 1828214d52aSPaul Mundtconfig SH64_PROC_ASIDS 1838214d52aSPaul Mundt bool "Debug: report ASIDs through /proc/asids" 1848214d52aSPaul Mundt depends on PROC_FS 1858214d52aSPaul Mundt 1868214d52aSPaul Mundtconfig SH64_SR_WATCH 1878214d52aSPaul Mundt bool "Debug: set SR.WATCH to enable hardware watchpoints and trace" 1888214d52aSPaul Mundt 1898214d52aSPaul Mundtconfig POOR_MANS_STRACE 1908214d52aSPaul Mundt bool "Debug: enable rudimentary strace facility" 1918214d52aSPaul Mundt help 1928214d52aSPaul Mundt This option allows system calls to be traced to the console. It also 1938214d52aSPaul Mundt aids in detecting kernel stack underflow. It is useful for debugging 1948214d52aSPaul Mundt early-userland problems (e.g. init incurring fatal exceptions.) 1958214d52aSPaul Mundt 1968214d52aSPaul Mundtconfig SH_ALPHANUMERIC 1978214d52aSPaul Mundt bool "Enable debug outputs to on-board alphanumeric display" 1988214d52aSPaul Mundt depends on SH_CAYMAN 1998214d52aSPaul Mundt 2008214d52aSPaul Mundtconfig SH_NO_BSS_INIT 2018214d52aSPaul Mundt bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)" 2028214d52aSPaul Mundt 2038214d52aSPaul Mundtendif 2048214d52aSPaul Mundt 2051da177e4SLinus Torvaldsendmenu 206