Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1config FRAME_POINTER
2 def_bool n
3
4config ZONE_DMA
5 def_bool y
6
7config XTENSA
8 def_bool y
9 select HAVE_IDE
10 select HAVE_GENERIC_HARDIRQS
11 select GENERIC_IRQ_SHOW
12 help
13 Xtensa processors are 32-bit RISC machines designed by Tensilica
14 primarily for embedded systems. These processors are both
15 configurable and extensible. The Linux port to the Xtensa
16 architecture supports all processor configurations and extensions,
17 with reasonable minimum requirements. The Xtensa Linux project has
18 a home page at <http://xtensa.sourceforge.net/>.
19
20config RWSEM_XCHGADD_ALGORITHM
21 def_bool y
22
23config GENERIC_HWEIGHT
24 def_bool y
25
26config GENERIC_GPIO
27 def_bool y
28
29config ARCH_HAS_ILOG2_U32
30 def_bool n
31
32config ARCH_HAS_ILOG2_U64
33 def_bool n
34
35config NO_IOPORT
36 def_bool y
37
38config HZ
39 int
40 default 100
41
42source "init/Kconfig"
43source "kernel/Kconfig.freezer"
44
45config MMU
46 def_bool n
47
48config VARIANT_IRQ_SWITCH
49 def_bool n
50
51menu "Processor type and features"
52
53choice
54 prompt "Xtensa Processor Configuration"
55 default XTENSA_VARIANT_FSF
56
57config XTENSA_VARIANT_FSF
58 bool "fsf - default (not generic) configuration"
59 select MMU
60
61config XTENSA_VARIANT_DC232B
62 bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"
63 select MMU
64 help
65 This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE).
66
67config XTENSA_VARIANT_S6000
68 bool "s6000 - Stretch software configurable processor"
69 select VARIANT_IRQ_SWITCH
70 select ARCH_REQUIRE_GPIOLIB
71 select XTENSA_CALIBRATE_CCOUNT
72endchoice
73
74config XTENSA_UNALIGNED_USER
75 bool "Unaligned memory access in use space"
76 help
77 The Xtensa architecture currently does not handle unaligned
78 memory accesses in hardware but through an exception handler.
79 Per default, unaligned memory accesses are disabled in user space.
80
81 Say Y here to enable unaligned memory access in user space.
82
83source "kernel/Kconfig.preempt"
84
85config MATH_EMULATION
86 bool "Math emulation"
87 help
88 Can we use information of configuration file?
89
90endmenu
91
92config XTENSA_CALIBRATE_CCOUNT
93 def_bool n
94 help
95 On some platforms (XT2000, for example), the CPU clock rate can
96 vary. The frequency can be determined, however, by measuring
97 against a well known, fixed frequency, such as an UART oscillator.
98
99config SERIAL_CONSOLE
100 def_bool n
101
102config XTENSA_ISS_NETWORK
103 def_bool n
104
105menu "Bus options"
106
107config PCI
108 bool "PCI support"
109 default y
110 help
111 Find out whether you have a PCI motherboard. PCI is the name of a
112 bus system, i.e. the way the CPU talks to the other stuff inside
113 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
114 VESA. If you have PCI, say Y, otherwise N.
115
116source "drivers/pci/Kconfig"
117
118endmenu
119
120menu "Platform options"
121
122choice
123 prompt "Xtensa System Type"
124 default XTENSA_PLATFORM_ISS
125
126config XTENSA_PLATFORM_ISS
127 bool "ISS"
128 select XTENSA_CALIBRATE_CCOUNT
129 select SERIAL_CONSOLE
130 select XTENSA_ISS_NETWORK
131 help
132 ISS is an acronym for Tensilica's Instruction Set Simulator.
133
134config XTENSA_PLATFORM_XT2000
135 bool "XT2000"
136 help
137 XT2000 is the name of Tensilica's feature-rich emulation platform.
138 This hardware is capable of running a full Linux distribution.
139
140config XTENSA_PLATFORM_S6105
141 bool "S6105"
142 select SERIAL_CONSOLE
143
144endchoice
145
146
147config XTENSA_CPU_CLOCK
148 int "CPU clock rate [MHz]"
149 depends on !XTENSA_CALIBRATE_CCOUNT
150 default 16
151
152config GENERIC_CALIBRATE_DELAY
153 bool "Auto calibration of the BogoMIPS value"
154 help
155 The BogoMIPS value can easily be derived from the CPU frequency.
156
157config CMDLINE_BOOL
158 bool "Default bootloader kernel arguments"
159
160config CMDLINE
161 string "Initial kernel command string"
162 depends on CMDLINE_BOOL
163 default "console=ttyS0,38400 root=/dev/ram"
164 help
165 On some architectures (EBSA110 and CATS), there is currently no way
166 for the boot loader to pass arguments to the kernel. For these
167 architectures, you should supply some command-line options at build
168 time by entering them here. As a minimum, you should specify the
169 memory size and the root device (e.g., mem=64M root=/dev/nfs).
170
171source "mm/Kconfig"
172
173config HOTPLUG
174 bool "Support for hot-pluggable devices"
175 help
176 Say Y here if you want to plug devices into your computer while
177 the system is running, and be able to use them quickly. In many
178 cases, the devices can likewise be unplugged at any time too.
179
180 One well known example of this is PCMCIA- or PC-cards, credit-card
181 size devices such as network cards, modems or hard drives which are
182 plugged into slots found on all modern laptop computers. Another
183 example, used on modern desktops as well as laptops, is USB.
184
185 Enable HOTPLUG and build a modular kernel. Get agent software
186 (from <http://linux-hotplug.sourceforge.net/>) and install it.
187 Then your kernel will automatically call out to a user mode "policy
188 agent" (/sbin/hotplug) to load modules and set up software needed
189 to use devices as you hotplug them.
190
191source "drivers/pcmcia/Kconfig"
192
193source "drivers/pci/hotplug/Kconfig"
194
195endmenu
196
197menu "Executable file formats"
198
199# only elf supported
200config KCORE_ELF
201 def_bool y
202 depends on PROC_FS
203 help
204 If you enabled support for /proc file system then the file
205 /proc/kcore will contain the kernel core image in ELF format. This
206 can be used in gdb:
207
208 $ cd /usr/src/linux ; gdb vmlinux /proc/kcore
209
210 This is especially useful if you have compiled the kernel with the
211 "-g" option to preserve debugging information. It is mainly used
212 for examining kernel data structures on the live kernel.
213
214source "fs/Kconfig.binfmt"
215
216endmenu
217
218source "net/Kconfig"
219
220source "drivers/Kconfig"
221
222source "fs/Kconfig"
223
224menu "Xtensa initrd options"
225 depends on BLK_DEV_INITRD
226
227config EMBEDDED_RAMDISK
228 bool "Embed root filesystem ramdisk into the kernel"
229
230config EMBEDDED_RAMDISK_IMAGE
231 string "Filename of gzipped ramdisk image"
232 depends on EMBEDDED_RAMDISK
233 default "ramdisk.gz"
234 help
235 This is the filename of the ramdisk image to be built into the
236 kernel. Relative pathnames are relative to arch/xtensa/boot/ramdisk/.
237 The ramdisk image is not part of the kernel distribution; you must
238 provide one yourself.
239endmenu
240
241source "arch/xtensa/Kconfig.debug"
242
243source "security/Kconfig"
244
245source "crypto/Kconfig"
246
247source "lib/Kconfig"
248
249