Commit | Line | Data |
---|---|---|
66701b14 | 1 | config ZONE_DMA |
35f9cd08 | 2 | def_bool y |
66701b14 | 3 | |
8e1a6dd2 | 4 | config XTENSA |
35f9cd08 | 5 | def_bool y |
8f371c75 | 6 | select ARCH_WANT_FRAME_POINTERS |
ec7748b5 | 7 | select HAVE_IDE |
c66af411 | 8 | select GENERIC_ATOMIC64 |
925f5532 | 9 | select GENERIC_CLOCKEVENTS |
4febd95a | 10 | select VIRT_TO_BUS |
47a5d9dc | 11 | select GENERIC_IRQ_SHOW |
9f13a1fd | 12 | select GENERIC_CPU_DEVICES |
e3f43291 | 13 | select GENERIC_SCHED_CLOCK |
d38efc1f MF |
14 | select MODULES_USE_ELF_RELA |
15 | select GENERIC_PCI_IOMAP | |
e969161b | 16 | select ARCH_WANT_IPC_PARSE_VERSION |
6ed65f37 | 17 | select ARCH_WANT_OPTIONAL_GPIOLIB |
3e41f9ba | 18 | select CLONE_BACKWARDS |
2206d5dd | 19 | select IRQ_DOMAIN |
e6ffe17e | 20 | select HAVE_OPROFILE |
478ba61a | 21 | select HAVE_FUNCTION_TRACER |
8e1a6dd2 CZ |
22 | help |
23 | Xtensa processors are 32-bit RISC machines designed by Tensilica | |
24 | primarily for embedded systems. These processors are both | |
25 | configurable and extensible. The Linux port to the Xtensa | |
26 | architecture supports all processor configurations and extensions, | |
27 | with reasonable minimum requirements. The Xtensa Linux project has | |
0ada4490 | 28 | a home page at <http://www.linux-xtensa.org/>. |
8e1a6dd2 | 29 | |
8e1a6dd2 | 30 | config RWSEM_XCHGADD_ALGORITHM |
35f9cd08 | 31 | def_bool y |
8e1a6dd2 | 32 | |
d4337aa5 | 33 | config GENERIC_HWEIGHT |
35f9cd08 | 34 | def_bool y |
d4337aa5 | 35 | |
f0d1b0b3 | 36 | config ARCH_HAS_ILOG2_U32 |
35f9cd08 | 37 | def_bool n |
f0d1b0b3 DH |
38 | |
39 | config ARCH_HAS_ILOG2_U64 | |
35f9cd08 | 40 | def_bool n |
f0d1b0b3 | 41 | |
5ea81769 | 42 | config NO_IOPORT |
d046f77e | 43 | def_bool n |
5ea81769 | 44 | |
bdc80787 PA |
45 | config HZ |
46 | int | |
47 | default 100 | |
48 | ||
8e1a6dd2 | 49 | source "init/Kconfig" |
dc52ddc0 | 50 | source "kernel/Kconfig.freezer" |
8e1a6dd2 | 51 | |
8f371c75 MF |
52 | config LOCKDEP_SUPPORT |
53 | def_bool y | |
54 | ||
3e4196a5 MF |
55 | config STACKTRACE_SUPPORT |
56 | def_bool y | |
57 | ||
c92931b2 MF |
58 | config TRACE_IRQFLAGS_SUPPORT |
59 | def_bool y | |
60 | ||
35f9cd08 JW |
61 | config MMU |
62 | def_bool n | |
63 | ||
4c0d2141 JW |
64 | config VARIANT_IRQ_SWITCH |
65 | def_bool n | |
66 | ||
a1a2bdec BS |
67 | config HAVE_XTENSA_GPIO32 |
68 | def_bool n | |
69 | ||
8e1a6dd2 CZ |
70 | menu "Processor type and features" |
71 | ||
72 | choice | |
73 | prompt "Xtensa Processor Configuration" | |
173d6681 | 74 | default XTENSA_VARIANT_FSF |
8e1a6dd2 | 75 | |
173d6681 | 76 | config XTENSA_VARIANT_FSF |
0025427e | 77 | bool "fsf - default (not generic) configuration" |
35f9cd08 | 78 | select MMU |
a1a2bdec | 79 | select HAVE_XTENSA_GPIO32 |
0025427e CZ |
80 | |
81 | config XTENSA_VARIANT_DC232B | |
82 | bool "dc232b - Diamond 232L Standard Core Rev.B (LE)" | |
35f9cd08 | 83 | select MMU |
a1a2bdec | 84 | select HAVE_XTENSA_GPIO32 |
0025427e | 85 | help |
35f9cd08 | 86 | This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE). |
000af2c5 | 87 | |
d0b73b48 PD |
88 | config XTENSA_VARIANT_DC233C |
89 | bool "dc233c - Diamond 233L Standard Core Rev.C (LE)" | |
90 | select MMU | |
a1a2bdec | 91 | select HAVE_XTENSA_GPIO32 |
d0b73b48 PD |
92 | help |
93 | This variant refers to Tensilica's Diamond 233L Standard core Rev.C (LE). | |
94 | ||
000af2c5 JW |
95 | config XTENSA_VARIANT_S6000 |
96 | bool "s6000 - Stretch software configurable processor" | |
97 | select VARIANT_IRQ_SWITCH | |
98 | select ARCH_REQUIRE_GPIOLIB | |
b070a03f | 99 | select XTENSA_CALIBRATE_CCOUNT |
8e1a6dd2 CZ |
100 | endchoice |
101 | ||
8e1a6dd2 CZ |
102 | config XTENSA_UNALIGNED_USER |
103 | bool "Unaligned memory access in use space" | |
35f9cd08 JW |
104 | help |
105 | The Xtensa architecture currently does not handle unaligned | |
106 | memory accesses in hardware but through an exception handler. | |
107 | Per default, unaligned memory accesses are disabled in user space. | |
8e1a6dd2 | 108 | |
35f9cd08 | 109 | Say Y here to enable unaligned memory access in user space. |
8e1a6dd2 | 110 | |
bd96efe1 | 111 | source "kernel/Kconfig.preempt" |
8e1a6dd2 CZ |
112 | |
113 | config MATH_EMULATION | |
114 | bool "Math emulation" | |
115 | help | |
116 | Can we use information of configuration file? | |
117 | ||
e85e335f MF |
118 | config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX |
119 | bool "Initialize Xtensa MMU inside the Linux kernel code" | |
120 | default y | |
121 | help | |
122 | Earlier version initialized the MMU in the exception vector | |
123 | before jumping to _startup in head.S and had an advantage that | |
124 | it was possible to place a software breakpoint at 'reset' and | |
125 | then enter your normal kernel breakpoints once the MMU was mapped | |
126 | to the kernel mappings (0XC0000000). | |
127 | ||
128 | This unfortunately doesn't work for U-Boot and likley also wont | |
129 | work for using KEXEC to have a hot kernel ready for doing a | |
130 | KDUMP. | |
131 | ||
132 | So now the MMU is initialized in head.S but it's necessary to | |
133 | use hardware breakpoints (gdb 'hbreak' cmd) to break at _startup. | |
134 | xt-gdb can't place a Software Breakpoint in the 0XD region prior | |
135 | to mapping the MMU and after mapping even if the area of low memory | |
136 | was mapped gdb wouldn't remove the breakpoint on hitting it as the | |
137 | PC wouldn't match. Since Hardware Breakpoints are recommended for | |
138 | Linux configurations it seems reasonable to just assume they exist | |
139 | and leave this older mechanism for unfortunate souls that choose | |
140 | not to follow Tensilica's recommendation. | |
141 | ||
142 | Selecting this will cause U-Boot to set the KERNEL Load and Entry | |
143 | address at 0x00003000 instead of the mapped std of 0xD0003000. | |
144 | ||
145 | If in doubt, say Y. | |
146 | ||
8e1a6dd2 CZ |
147 | endmenu |
148 | ||
35f9cd08 JW |
149 | config XTENSA_CALIBRATE_CCOUNT |
150 | def_bool n | |
151 | help | |
152 | On some platforms (XT2000, for example), the CPU clock rate can | |
153 | vary. The frequency can be determined, however, by measuring | |
154 | against a well known, fixed frequency, such as an UART oscillator. | |
155 | ||
156 | config SERIAL_CONSOLE | |
157 | def_bool n | |
158 | ||
159 | config XTENSA_ISS_NETWORK | |
160 | def_bool n | |
161 | ||
162 | menu "Bus options" | |
163 | ||
164 | config PCI | |
165 | bool "PCI support" | |
166 | default y | |
167 | help | |
168 | Find out whether you have a PCI motherboard. PCI is the name of a | |
169 | bus system, i.e. the way the CPU talks to the other stuff inside | |
170 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
171 | VESA. If you have PCI, say Y, otherwise N. | |
172 | ||
173 | source "drivers/pci/Kconfig" | |
174 | ||
35e71f90 CZ |
175 | endmenu |
176 | ||
8e1a6dd2 CZ |
177 | menu "Platform options" |
178 | ||
179 | choice | |
180 | prompt "Xtensa System Type" | |
181 | default XTENSA_PLATFORM_ISS | |
182 | ||
183 | config XTENSA_PLATFORM_ISS | |
184 | bool "ISS" | |
4f73bc4d | 185 | depends on TTY |
35f9cd08 JW |
186 | select XTENSA_CALIBRATE_CCOUNT |
187 | select SERIAL_CONSOLE | |
188 | select XTENSA_ISS_NETWORK | |
8e1a6dd2 CZ |
189 | help |
190 | ISS is an acronym for Tensilica's Instruction Set Simulator. | |
191 | ||
192 | config XTENSA_PLATFORM_XT2000 | |
193 | bool "XT2000" | |
194 | help | |
195 | XT2000 is the name of Tensilica's feature-rich emulation platform. | |
196 | This hardware is capable of running a full Linux distribution. | |
197 | ||
f82e939f JW |
198 | config XTENSA_PLATFORM_S6105 |
199 | bool "S6105" | |
200 | select SERIAL_CONSOLE | |
d046f77e | 201 | select NO_IOPORT |
f82e939f | 202 | |
0d456bad MF |
203 | config XTENSA_PLATFORM_XTFPGA |
204 | bool "XTFPGA" | |
205 | select SERIAL_CONSOLE | |
206 | select ETHOC | |
207 | select XTENSA_CALIBRATE_CCOUNT | |
208 | help | |
209 | XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). | |
210 | This hardware is capable of running a full Linux distribution. | |
211 | ||
8e1a6dd2 CZ |
212 | endchoice |
213 | ||
214 | ||
8e1a6dd2 CZ |
215 | config XTENSA_CPU_CLOCK |
216 | int "CPU clock rate [MHz]" | |
217 | depends on !XTENSA_CALIBRATE_CCOUNT | |
35f9cd08 | 218 | default 16 |
8e1a6dd2 CZ |
219 | |
220 | config GENERIC_CALIBRATE_DELAY | |
221 | bool "Auto calibration of the BogoMIPS value" | |
35f9cd08 | 222 | help |
82300bf4 | 223 | The BogoMIPS value can easily be derived from the CPU frequency. |
8e1a6dd2 CZ |
224 | |
225 | config CMDLINE_BOOL | |
226 | bool "Default bootloader kernel arguments" | |
227 | ||
228 | config CMDLINE | |
229 | string "Initial kernel command string" | |
230 | depends on CMDLINE_BOOL | |
231 | default "console=ttyS0,38400 root=/dev/ram" | |
232 | help | |
233 | On some architectures (EBSA110 and CATS), there is currently no way | |
234 | for the boot loader to pass arguments to the kernel. For these | |
235 | architectures, you should supply some command-line options at build | |
236 | time by entering them here. As a minimum, you should specify the | |
237 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
238 | ||
da844a81 MF |
239 | config USE_OF |
240 | bool "Flattened Device Tree support" | |
241 | select OF | |
242 | select OF_EARLY_FLATTREE | |
243 | help | |
244 | Include support for flattened device tree machine descriptions. | |
245 | ||
246 | config BUILTIN_DTB | |
247 | string "DTB to build into the kernel image" | |
248 | depends on OF | |
249 | ||
b6c7e873 VP |
250 | config BLK_DEV_SIMDISK |
251 | tristate "Host file-based simulated block device support" | |
252 | default n | |
253 | depends on XTENSA_PLATFORM_ISS | |
254 | help | |
255 | Create block devices that map to files in the host file system. | |
256 | Device binding to host file may be changed at runtime via proc | |
257 | interface provided the device is not in use. | |
258 | ||
259 | config BLK_DEV_SIMDISK_COUNT | |
260 | int "Number of host file-based simulated block devices" | |
261 | range 1 10 | |
262 | depends on BLK_DEV_SIMDISK | |
263 | default 2 | |
264 | help | |
265 | This is the default minimal number of created block devices. | |
266 | Kernel/module parameter 'simdisk_count' may be used to change this | |
267 | value at runtime. More file names (but no more than 10) may be | |
268 | specified as parameters, simdisk_count grows accordingly. | |
269 | ||
270 | config SIMDISK0_FILENAME | |
271 | string "Host filename for the first simulated device" | |
272 | depends on BLK_DEV_SIMDISK = y | |
273 | default "" | |
274 | help | |
275 | Attach a first simdisk to a host file. Conventionally, this file | |
276 | contains a root file system. | |
277 | ||
278 | config SIMDISK1_FILENAME | |
279 | string "Host filename for the second simulated device" | |
280 | depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1 | |
281 | default "" | |
282 | help | |
283 | Another simulated disk in a host file for a buildroot-independent | |
284 | storage. | |
285 | ||
82300bf4 CZ |
286 | source "mm/Kconfig" |
287 | ||
8e1a6dd2 CZ |
288 | source "drivers/pcmcia/Kconfig" |
289 | ||
290 | source "drivers/pci/hotplug/Kconfig" | |
291 | ||
292 | endmenu | |
293 | ||
cab00891 | 294 | menu "Executable file formats" |
8e1a6dd2 | 295 | |
8e1a6dd2 CZ |
296 | source "fs/Kconfig.binfmt" |
297 | ||
298 | endmenu | |
299 | ||
d5950b43 SR |
300 | source "net/Kconfig" |
301 | ||
8e1a6dd2 CZ |
302 | source "drivers/Kconfig" |
303 | ||
304 | source "fs/Kconfig" | |
305 | ||
8e1a6dd2 CZ |
306 | source "arch/xtensa/Kconfig.debug" |
307 | ||
308 | source "security/Kconfig" | |
309 | ||
310 | source "crypto/Kconfig" | |
311 | ||
312 | source "lib/Kconfig" | |
313 | ||
314 |