5 select HAVE_GENERIC_HARDIRQS
6 select GENERIC_IRQ_SHOW
28 config RWSEM_GENERIC_SPINLOCK
32 config RWSEM_XCHGADD_ALGORITHM
36 config ARCH_HAS_ILOG2_U32
40 config ARCH_HAS_ILOG2_U64
44 config GENERIC_HWEIGHT
48 config GENERIC_CALIBRATE_DELAY
80 source "kernel/Kconfig.freezer"
82 source "arch/h8300/Kconfig.cpu"
84 menu "Executable file formats"
86 source "fs/Kconfig.binfmt"
92 source "drivers/base/Kconfig"
94 source "drivers/mtd/Kconfig"
96 source "drivers/block/Kconfig"
98 source "drivers/ide/Kconfig"
100 source "arch/h8300/Kconfig.ide"
102 source "drivers/net/Kconfig"
105 # input - input/joystick depends on it. As does USB.
107 source "drivers/input/Kconfig"
109 menu "Character devices"
112 bool "Virtual terminal"
114 If you say Y here, you will get support for terminal devices with
115 display and keyboard devices. These are called "virtual" because you
116 can run several virtual terminals (also called virtual consoles) on
117 one physical terminal. This is rather useful, for example one
118 virtual terminal can collect system messages and warnings, another
119 one can be used for a text-mode user session, and a third could run
120 an X session, all in parallel. Switching between virtual terminals
121 is done with certain key combinations, usually Alt-<function key>.
123 The setterm command ("man setterm") can be used to change the
124 properties (such as colors or beeping) of a virtual terminal. The
125 man page console_codes(4) ("man console_codes") contains the special
126 character sequences that can be used to change those properties
127 directly. The fonts used on virtual terminals can be changed with
128 the setfont ("man setfont") command and the key bindings are defined
129 with the loadkeys ("man loadkeys") command.
131 You need at least one virtual terminal device in order to make use
132 of your keyboard and monitor. Therefore, only people configuring an
133 embedded system would want to say N here in order to save some
134 memory; the only way to log into such a system is then via a serial
135 or network connection.
137 If unsure, say Y, or else you won't be able to do much with your new
138 shiny Linux system :-)
141 bool "Support for console on virtual terminal"
144 The system console is the device which receives all kernel messages
145 and warnings and which allows logins in single user mode. If you
146 answer Y here, a virtual terminal (the device used to interact with
147 a physical terminal) can be used as system console. This is the most
148 common mode of operations, so you should say Y here unless you want
149 the kernel messages be output only to a serial port (in which case
150 you should say Y to "Console on serial port", below).
152 If you do say Y here, by default the currently visible virtual
153 terminal (/dev/tty0) will be used as system console. You can change
154 that with a kernel command line option such as "console=tty3" which
155 would use the third virtual terminal as system console. (Try "man
156 bootparam" or see the documentation of your boot loader (lilo or
157 loadlin) about how to pass options to the kernel at boot time.)
166 comment "Unix98 PTY support"
169 bool "Unix98 PTY support"
171 A pseudo terminal (PTY) is a software device consisting of two
172 halves: a master and a slave. The slave device behaves identical to
173 a physical terminal; the master device is used by a process to
174 read data from and write data to the slave, thereby emulating a
175 terminal. Typical programs for the master side are telnet servers
178 Linux has traditionally used the BSD-like names /dev/ptyxx for
179 masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
180 has a number of problems. The GNU C library glibc 2.1 and later,
181 however, supports the Unix98 naming standard: in order to acquire a
182 pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
183 terminal is then made available to the process and the pseudo
184 terminal slave can be accessed as /dev/pts/<number>. What was
185 traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
187 The entries in /dev/pts/ are created on the fly by a virtual
188 file system; therefore, if you say Y here you should say Y to
189 "/dev/pts file system for Unix98 PTYs" as well.
191 If you want to say Y here, you need to have the C library glibc 2.1
192 or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
193 Read the instructions in <file:Documentation/Changes> pertaining to
194 pseudo terminals. It's safe to say N.
196 source "drivers/char/pcmcia/Kconfig"
198 source "drivers/tty/serial/Kconfig"
200 source "drivers/i2c/Kconfig"
202 source "drivers/hwmon/Kconfig"
204 source "drivers/usb/Kconfig"
206 source "drivers/uwb/Kconfig"
210 source "drivers/staging/Kconfig"
214 source "arch/h8300/Kconfig.debug"
216 source "security/Kconfig"
218 source "crypto/Kconfig"