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Diffstat (limited to 'drivers/tty/Kconfig')
-rw-r--r-- | drivers/tty/Kconfig | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig new file mode 100644 index 000000000000..3fd7199301b6 --- /dev/null +++ b/drivers/tty/Kconfig | |||
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1 | config VT | ||
2 | bool "Virtual terminal" if EXPERT | ||
3 | depends on !S390 | ||
4 | select INPUT | ||
5 | default y | ||
6 | ---help--- | ||
7 | If you say Y here, you will get support for terminal devices with | ||
8 | display and keyboard devices. These are called "virtual" because you | ||
9 | can run several virtual terminals (also called virtual consoles) on | ||
10 | one physical terminal. This is rather useful, for example one | ||
11 | virtual terminal can collect system messages and warnings, another | ||
12 | one can be used for a text-mode user session, and a third could run | ||
13 | an X session, all in parallel. Switching between virtual terminals | ||
14 | is done with certain key combinations, usually Alt-<function key>. | ||
15 | |||
16 | The setterm command ("man setterm") can be used to change the | ||
17 | properties (such as colors or beeping) of a virtual terminal. The | ||
18 | man page console_codes(4) ("man console_codes") contains the special | ||
19 | character sequences that can be used to change those properties | ||
20 | directly. The fonts used on virtual terminals can be changed with | ||
21 | the setfont ("man setfont") command and the key bindings are defined | ||
22 | with the loadkeys ("man loadkeys") command. | ||
23 | |||
24 | You need at least one virtual terminal device in order to make use | ||
25 | of your keyboard and monitor. Therefore, only people configuring an | ||
26 | embedded system would want to say N here in order to save some | ||
27 | memory; the only way to log into such a system is then via a serial | ||
28 | or network connection. | ||
29 | |||
30 | If unsure, say Y, or else you won't be able to do much with your new | ||
31 | shiny Linux system :-) | ||
32 | |||
33 | config CONSOLE_TRANSLATIONS | ||
34 | depends on VT | ||
35 | default y | ||
36 | bool "Enable character translations in console" if EXPERT | ||
37 | ---help--- | ||
38 | This enables support for font mapping and Unicode translation | ||
39 | on virtual consoles. | ||
40 | |||
41 | config VT_CONSOLE | ||
42 | bool "Support for console on virtual terminal" if EXPERT | ||
43 | depends on VT | ||
44 | default y | ||
45 | ---help--- | ||
46 | The system console is the device which receives all kernel messages | ||
47 | and warnings and which allows logins in single user mode. If you | ||
48 | answer Y here, a virtual terminal (the device used to interact with | ||
49 | a physical terminal) can be used as system console. This is the most | ||
50 | common mode of operations, so you should say Y here unless you want | ||
51 | the kernel messages be output only to a serial port (in which case | ||
52 | you should say Y to "Console on serial port", below). | ||
53 | |||
54 | If you do say Y here, by default the currently visible virtual | ||
55 | terminal (/dev/tty0) will be used as system console. You can change | ||
56 | that with a kernel command line option such as "console=tty3" which | ||
57 | would use the third virtual terminal as system console. (Try "man | ||
58 | bootparam" or see the documentation of your boot loader (lilo or | ||
59 | loadlin) about how to pass options to the kernel at boot time.) | ||
60 | |||
61 | If unsure, say Y. | ||
62 | |||
63 | config HW_CONSOLE | ||
64 | bool | ||
65 | depends on VT && !S390 && !UML | ||
66 | default y | ||
67 | |||
68 | config VT_HW_CONSOLE_BINDING | ||
69 | bool "Support for binding and unbinding console drivers" | ||
70 | depends on HW_CONSOLE | ||
71 | default n | ||
72 | ---help--- | ||
73 | The virtual terminal is the device that interacts with the physical | ||
74 | terminal through console drivers. On these systems, at least one | ||
75 | console driver is loaded. In other configurations, additional console | ||
76 | drivers may be enabled, such as the framebuffer console. If more than | ||
77 | 1 console driver is enabled, setting this to 'y' will allow you to | ||
78 | select the console driver that will serve as the backend for the | ||
79 | virtual terminals. | ||
80 | |||
81 | See <file:Documentation/console/console.txt> for more | ||
82 | information. For framebuffer console users, please refer to | ||
83 | <file:Documentation/fb/fbcon.txt>. | ||
84 | |||
85 | config UNIX98_PTYS | ||
86 | bool "Unix98 PTY support" if EXPERT | ||
87 | default y | ||
88 | ---help--- | ||
89 | A pseudo terminal (PTY) is a software device consisting of two | ||
90 | halves: a master and a slave. The slave device behaves identical to | ||
91 | a physical terminal; the master device is used by a process to | ||
92 | read data from and write data to the slave, thereby emulating a | ||
93 | terminal. Typical programs for the master side are telnet servers | ||
94 | and xterms. | ||
95 | |||
96 | Linux has traditionally used the BSD-like names /dev/ptyxx for | ||
97 | masters and /dev/ttyxx for slaves of pseudo terminals. This scheme | ||
98 | has a number of problems. The GNU C library glibc 2.1 and later, | ||
99 | however, supports the Unix98 naming standard: in order to acquire a | ||
100 | pseudo terminal, a process opens /dev/ptmx; the number of the pseudo | ||
101 | terminal is then made available to the process and the pseudo | ||
102 | terminal slave can be accessed as /dev/pts/<number>. What was | ||
103 | traditionally /dev/ttyp2 will then be /dev/pts/2, for example. | ||
104 | |||
105 | All modern Linux systems use the Unix98 ptys. Say Y unless | ||
106 | you're on an embedded system and want to conserve memory. | ||
107 | |||
108 | config DEVPTS_MULTIPLE_INSTANCES | ||
109 | bool "Support multiple instances of devpts" | ||
110 | depends on UNIX98_PTYS | ||
111 | default n | ||
112 | ---help--- | ||
113 | Enable support for multiple instances of devpts filesystem. | ||
114 | If you want to have isolated PTY namespaces (eg: in containers), | ||
115 | say Y here. Otherwise, say N. If enabled, each mount of devpts | ||
116 | filesystem with the '-o newinstance' option will create an | ||
117 | independent PTY namespace. | ||
118 | |||
119 | config LEGACY_PTYS | ||
120 | bool "Legacy (BSD) PTY support" | ||
121 | default y | ||
122 | ---help--- | ||
123 | A pseudo terminal (PTY) is a software device consisting of two | ||
124 | halves: a master and a slave. The slave device behaves identical to | ||
125 | a physical terminal; the master device is used by a process to | ||
126 | read data from and write data to the slave, thereby emulating a | ||
127 | terminal. Typical programs for the master side are telnet servers | ||
128 | and xterms. | ||
129 | |||
130 | Linux has traditionally used the BSD-like names /dev/ptyxx | ||
131 | for masters and /dev/ttyxx for slaves of pseudo | ||
132 | terminals. This scheme has a number of problems, including | ||
133 | security. This option enables these legacy devices; on most | ||
134 | systems, it is safe to say N. | ||
135 | |||
136 | |||
137 | config LEGACY_PTY_COUNT | ||
138 | int "Maximum number of legacy PTY in use" | ||
139 | depends on LEGACY_PTYS | ||
140 | range 0 256 | ||
141 | default "256" | ||
142 | ---help--- | ||
143 | The maximum number of legacy PTYs that can be used at any one time. | ||
144 | The default is 256, and should be more than enough. Embedded | ||
145 | systems may want to reduce this to save memory. | ||
146 | |||
147 | When not in use, each legacy PTY occupies 12 bytes on 32-bit | ||
148 | architectures and 24 bytes on 64-bit architectures. | ||
149 | |||
150 | config BFIN_JTAG_COMM | ||
151 | tristate "Blackfin JTAG Communication" | ||
152 | depends on BLACKFIN | ||
153 | help | ||
154 | Add support for emulating a TTY device over the Blackfin JTAG. | ||
155 | |||
156 | To compile this driver as a module, choose M here: the | ||
157 | module will be called bfin_jtag_comm. | ||
158 | |||
159 | config BFIN_JTAG_COMM_CONSOLE | ||
160 | bool "Console on Blackfin JTAG" | ||
161 | depends on BFIN_JTAG_COMM=y | ||
162 | |||
163 | config SERIAL_NONSTANDARD | ||
164 | bool "Non-standard serial port support" | ||
165 | depends on HAS_IOMEM | ||
166 | ---help--- | ||
167 | Say Y here if you have any non-standard serial boards -- boards | ||
168 | which aren't supported using the standard "dumb" serial driver. | ||
169 | This includes intelligent serial boards such as Cyclades, | ||
170 | Digiboards, etc. These are usually used for systems that need many | ||
171 | serial ports because they serve many terminals or dial-in | ||
172 | connections. | ||
173 | |||
174 | Note that the answer to this question won't directly affect the | ||
175 | kernel: saying N will just cause the configurator to skip all | ||
176 | the questions about non-standard serial boards. | ||
177 | |||
178 | Most people can say N here. | ||
179 | |||
180 | config ROCKETPORT | ||
181 | tristate "Comtrol RocketPort support" | ||
182 | depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) | ||
183 | help | ||
184 | This driver supports Comtrol RocketPort and RocketModem PCI boards. | ||
185 | These boards provide 2, 4, 8, 16, or 32 high-speed serial ports or | ||
186 | modems. For information about the RocketPort/RocketModem boards | ||
187 | and this driver read <file:Documentation/serial/rocket.txt>. | ||
188 | |||
189 | To compile this driver as a module, choose M here: the | ||
190 | module will be called rocket. | ||
191 | |||
192 | If you want to compile this driver into the kernel, say Y here. If | ||
193 | you don't have a Comtrol RocketPort/RocketModem card installed, say N. | ||
194 | |||
195 | config CYCLADES | ||
196 | tristate "Cyclades async mux support" | ||
197 | depends on SERIAL_NONSTANDARD && (PCI || ISA) | ||
198 | select FW_LOADER | ||
199 | ---help--- | ||
200 | This driver supports Cyclades Z and Y multiserial boards. | ||
201 | You would need something like this to connect more than two modems to | ||
202 | your Linux box, for instance in order to become a dial-in server. | ||
203 | |||
204 | For information about the Cyclades-Z card, read | ||
205 | <file:Documentation/serial/README.cycladesZ>. | ||
206 | |||
207 | To compile this driver as a module, choose M here: the | ||
208 | module will be called cyclades. | ||
209 | |||
210 | If you haven't heard about it, it's safe to say N. | ||
211 | |||
212 | config CYZ_INTR | ||
213 | bool "Cyclades-Z interrupt mode operation (EXPERIMENTAL)" | ||
214 | depends on EXPERIMENTAL && CYCLADES | ||
215 | help | ||
216 | The Cyclades-Z family of multiport cards allows 2 (two) driver op | ||
217 | modes: polling and interrupt. In polling mode, the driver will check | ||
218 | the status of the Cyclades-Z ports every certain amount of time | ||
219 | (which is called polling cycle and is configurable). In interrupt | ||
220 | mode, it will use an interrupt line (IRQ) in order to check the | ||
221 | status of the Cyclades-Z ports. The default op mode is polling. If | ||
222 | unsure, say N. | ||
223 | |||
224 | config MOXA_INTELLIO | ||
225 | tristate "Moxa Intellio support" | ||
226 | depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) | ||
227 | select FW_LOADER | ||
228 | help | ||
229 | Say Y here if you have a Moxa Intellio multiport serial card. | ||
230 | |||
231 | To compile this driver as a module, choose M here: the | ||
232 | module will be called moxa. | ||
233 | |||
234 | config MOXA_SMARTIO | ||
235 | tristate "Moxa SmartIO support v. 2.0" | ||
236 | depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) | ||
237 | help | ||
238 | Say Y here if you have a Moxa SmartIO multiport serial card and/or | ||
239 | want to help develop a new version of this driver. | ||
240 | |||
241 | This is upgraded (1.9.1) driver from original Moxa drivers with | ||
242 | changes finally resulting in PCI probing. | ||
243 | |||
244 | This driver can also be built as a module. The module will be called | ||
245 | mxser. If you want to do that, say M here. | ||
246 | |||
247 | config SYNCLINK | ||
248 | tristate "Microgate SyncLink card support" | ||
249 | depends on SERIAL_NONSTANDARD && PCI && ISA_DMA_API | ||
250 | help | ||
251 | Provides support for the SyncLink ISA and PCI multiprotocol serial | ||
252 | adapters. These adapters support asynchronous and HDLC bit | ||
253 | synchronous communication up to 10Mbps (PCI adapter). | ||
254 | |||
255 | This driver can only be built as a module ( = code which can be | ||
256 | inserted in and removed from the running kernel whenever you want). | ||
257 | The module will be called synclink. If you want to do that, say M | ||
258 | here. | ||
259 | |||
260 | config SYNCLINKMP | ||
261 | tristate "SyncLink Multiport support" | ||
262 | depends on SERIAL_NONSTANDARD && PCI | ||
263 | help | ||
264 | Enable support for the SyncLink Multiport (2 or 4 ports) | ||
265 | serial adapter, running asynchronous and HDLC communications up | ||
266 | to 2.048Mbps. Each ports is independently selectable for | ||
267 | RS-232, V.35, RS-449, RS-530, and X.21 | ||
268 | |||
269 | This driver may be built as a module ( = code which can be | ||
270 | inserted in and removed from the running kernel whenever you want). | ||
271 | The module will be called synclinkmp. If you want to do that, say M | ||
272 | here. | ||
273 | |||
274 | config SYNCLINK_GT | ||
275 | tristate "SyncLink GT/AC support" | ||
276 | depends on SERIAL_NONSTANDARD && PCI | ||
277 | help | ||
278 | Support for SyncLink GT and SyncLink AC families of | ||
279 | synchronous and asynchronous serial adapters | ||
280 | manufactured by Microgate Systems, Ltd. (www.microgate.com) | ||
281 | |||
282 | config NOZOMI | ||
283 | tristate "HSDPA Broadband Wireless Data Card - Globe Trotter" | ||
284 | depends on PCI && EXPERIMENTAL | ||
285 | help | ||
286 | If you have a HSDPA driver Broadband Wireless Data Card - | ||
287 | Globe Trotter PCMCIA card, say Y here. | ||
288 | |||
289 | To compile this driver as a module, choose M here, the module | ||
290 | will be called nozomi. | ||
291 | |||
292 | config ISI | ||
293 | tristate "Multi-Tech multiport card support (EXPERIMENTAL)" | ||
294 | depends on SERIAL_NONSTANDARD && PCI | ||
295 | select FW_LOADER | ||
296 | help | ||
297 | This is a driver for the Multi-Tech cards which provide several | ||
298 | serial ports. The driver is experimental and can currently only be | ||
299 | built as a module. The module will be called isicom. | ||
300 | If you want to do that, choose M here. | ||
301 | |||
302 | config N_HDLC | ||
303 | tristate "HDLC line discipline support" | ||
304 | depends on SERIAL_NONSTANDARD | ||
305 | help | ||
306 | Allows synchronous HDLC communications with tty device drivers that | ||
307 | support synchronous HDLC such as the Microgate SyncLink adapter. | ||
308 | |||
309 | This driver can be built as a module ( = code which can be | ||
310 | inserted in and removed from the running kernel whenever you want). | ||
311 | The module will be called n_hdlc. If you want to do that, say M | ||
312 | here. | ||
313 | |||
314 | config N_GSM | ||
315 | tristate "GSM MUX line discipline support (EXPERIMENTAL)" | ||
316 | depends on EXPERIMENTAL | ||
317 | depends on NET | ||
318 | help | ||
319 | This line discipline provides support for the GSM MUX protocol and | ||
320 | presents the mux as a set of 61 individual tty devices. | ||
321 | |||