1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/config-language.txt.
#
mainmenu "uClinux/h8300 (w/o MMU) Kernel Configuration"
config H8300
bool
default y
config MMU
bool
default n
config SWAP
bool
default n
config FPU
bool
default n
config UID16
bool
default y
config RWSEM_GENERIC_SPINLOCK
bool
default y
config RWSEM_XCHGADD_ALGORITHM
bool
default n
config GENERIC_CALIBRATE_DELAY
bool
default y
config ISA
bool
default y
config PCI
bool
default n
source "init/Kconfig"
source "arch/h8300/Kconfig.cpu"
menu "Executable file formats"
source "fs/Kconfig.binfmt"
endmenu
source "net/Kconfig"
source "drivers/base/Kconfig"
source "drivers/mtd/Kconfig"
source "drivers/block/Kconfig"
source "drivers/ide/Kconfig"
source "arch/h8300/Kconfig.ide"
source "drivers/net/Kconfig"
#
# input - input/joystick depends on it. As does USB.
#
source "drivers/input/Kconfig"
menu "Character devices"
config VT
bool "Virtual terminal"
---help---
If you say Y here, you will get support for terminal devices with
display and keyboard devices. These are called "virtual" because you
can run several virtual terminals (also called virtual consoles) on
one physical terminal. This is rather useful, for example one
virtual terminal can collect system messages and warnings, another
one can be used for a text-mode user session, and a third could run
an X session, all in parallel. Switching between virtual terminals
is done with certain key combinations, usually Alt-<function key>.
The setterm command ("man setterm") can be used to change the
properties (such as colors or beeping) of a virtual terminal. The
man page console_codes(4) ("man console_codes") contains the special
character sequences that can be used to change those properties
directly. The fonts used on virtual terminals can be changed with
the setfont ("man setfont") command and the key bindings are defined
with the loadkeys ("man loadkeys") command.
You need at least one virtual terminal device in order to make use
of your keyboard and monitor. Therefore, only people configuring an
embedded system would want to say N here in order to save some
memory; the only way to log into such a system is then via a serial
or network connection.
If unsure, say Y, or else you won't be able to do much with your new
shiny Linux system :-)
config VT_CONSOLE
bool "Support for console on virtual terminal"
depends on VT
---help---
The system console is the device which receives all kernel messages
and warnings and which allows logins in single user mode. If you
answer Y here, a virtual terminal (the device used to interact with
a physical terminal) can be used as system console. This is the most
common mode of operations, so you should say Y here unless you want
the kernel messages be output only to a serial port (in which case
you should say Y to "Console on serial port", below).
If you do say Y here, by default the currently visible virtual
terminal (/dev/tty0) will be used as system console. You can change
that with a kernel command line option such as "console=tty3" which
would use the third virtual terminal as system console. (Try "man
bootparam" or see the documentation of your boot loader (lilo or
loadlin) about how to pass options to the kernel at boot time.)
If unsure, say Y.
config HW_CONSOLE
bool
depends on VT && !S390 && !UM
default y
comment "Unix98 PTY support"
config UNIX98_PTYS
bool "Unix98 PTY support"
---help---
A pseudo terminal (PTY) is a software device consisting of two
halves: a master and a slave. The slave device behaves identical to
a physical terminal; the master device is used by a process to
read data from and write data to the slave, thereby emulating a
terminal. Typical programs for the master side are telnet servers
and xterms.
Linux has traditionally used the BSD-like names /dev/ptyxx for
masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
has a number of problems. The GNU C library glibc 2.1 and later,
however, supports the Unix98 naming standard: in order to acquire a
pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
terminal is then made available to the process and the pseudo
terminal slave can be accessed as /dev/pts/<number>. What was
traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
The entries in /dev/pts/ are created on the fly by a virtual
file system; therefore, if you say Y here you should say Y to
"/dev/pts file system for Unix98 PTYs" as well.
If you want to say Y here, you need to have the C library glibc 2.1
or later (equal to libc-6.1, check with "ls -l /lib/libc.so.*").
Read the instructions in <file:Documentation/Changes> pertaining to
pseudo terminals. It's safe to say N.
config UNIX98_PTY_COUNT
int "Maximum number of Unix98 PTYs in use (0-2048)"
depends on UNIX98_PTYS
default "256"
help
The maximum number of Unix98 PTYs that can be used at any one time.
The default is 256, and should be enough for desktop systems. Server
machines which support incoming telnet/rlogin/ssh connections and/or
serve several X terminals may want to increase this: every incoming
connection and every xterm uses up one PTY.
When not in use, each additional set of 256 PTYs occupy
approximately 8 KB of kernel memory on 32-bit architectures.
source "drivers/char/pcmcia/Kconfig"
source "drivers/serial/Kconfig"
source "drivers/i2c/Kconfig"
source "drivers/usb/Kconfig"
endmenu
source "fs/Kconfig"
source "arch/h8300/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"
|
