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 |
e3f43291 | 12 | select GENERIC_SCHED_CLOCK |
d38efc1f MF |
13 | select MODULES_USE_ELF_RELA |
14 | select GENERIC_PCI_IOMAP | |
e969161b | 15 | select ARCH_WANT_IPC_PARSE_VERSION |
6ed65f37 | 16 | select ARCH_WANT_OPTIONAL_GPIOLIB |
3e41f9ba | 17 | select CLONE_BACKWARDS |
2206d5dd | 18 | select IRQ_DOMAIN |
e6ffe17e | 19 | select HAVE_OPROFILE |
478ba61a | 20 | select HAVE_FUNCTION_TRACER |
496543c4 | 21 | select HAVE_IRQ_TIME_ACCOUNTING |
a6f3eefa | 22 | select HAVE_PERF_EVENTS |
8e1a6dd2 CZ |
23 | help |
24 | Xtensa processors are 32-bit RISC machines designed by Tensilica | |
25 | primarily for embedded systems. These processors are both | |
26 | configurable and extensible. The Linux port to the Xtensa | |
27 | architecture supports all processor configurations and extensions, | |
28 | with reasonable minimum requirements. The Xtensa Linux project has | |
0ada4490 | 29 | a home page at <http://www.linux-xtensa.org/>. |
8e1a6dd2 | 30 | |
8e1a6dd2 | 31 | config RWSEM_XCHGADD_ALGORITHM |
35f9cd08 | 32 | def_bool y |
8e1a6dd2 | 33 | |
d4337aa5 | 34 | config GENERIC_HWEIGHT |
35f9cd08 | 35 | def_bool y |
d4337aa5 | 36 | |
f0d1b0b3 | 37 | config ARCH_HAS_ILOG2_U32 |
35f9cd08 | 38 | def_bool n |
f0d1b0b3 DH |
39 | |
40 | config ARCH_HAS_ILOG2_U64 | |
35f9cd08 | 41 | def_bool n |
f0d1b0b3 | 42 | |
5ea81769 | 43 | config NO_IOPORT |
d046f77e | 44 | def_bool n |
5ea81769 | 45 | |
bdc80787 PA |
46 | config HZ |
47 | int | |
48 | default 100 | |
49 | ||
8e1a6dd2 | 50 | source "init/Kconfig" |
dc52ddc0 | 51 | source "kernel/Kconfig.freezer" |
8e1a6dd2 | 52 | |
8f371c75 MF |
53 | config LOCKDEP_SUPPORT |
54 | def_bool y | |
55 | ||
3e4196a5 MF |
56 | config STACKTRACE_SUPPORT |
57 | def_bool y | |
58 | ||
c92931b2 MF |
59 | config TRACE_IRQFLAGS_SUPPORT |
60 | def_bool y | |
61 | ||
35f9cd08 JW |
62 | config MMU |
63 | def_bool n | |
64 | ||
4c0d2141 JW |
65 | config VARIANT_IRQ_SWITCH |
66 | def_bool n | |
67 | ||
a1a2bdec BS |
68 | config HAVE_XTENSA_GPIO32 |
69 | def_bool n | |
70 | ||
f615136c MF |
71 | config MAY_HAVE_SMP |
72 | def_bool n | |
73 | ||
8e1a6dd2 CZ |
74 | menu "Processor type and features" |
75 | ||
76 | choice | |
77 | prompt "Xtensa Processor Configuration" | |
173d6681 | 78 | default XTENSA_VARIANT_FSF |
8e1a6dd2 | 79 | |
173d6681 | 80 | config XTENSA_VARIANT_FSF |
0025427e | 81 | bool "fsf - default (not generic) configuration" |
35f9cd08 | 82 | select MMU |
a1a2bdec | 83 | select HAVE_XTENSA_GPIO32 |
0025427e CZ |
84 | |
85 | config XTENSA_VARIANT_DC232B | |
86 | bool "dc232b - Diamond 232L Standard Core Rev.B (LE)" | |
35f9cd08 | 87 | select MMU |
a1a2bdec | 88 | select HAVE_XTENSA_GPIO32 |
0025427e | 89 | help |
35f9cd08 | 90 | This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE). |
000af2c5 | 91 | |
d0b73b48 PD |
92 | config XTENSA_VARIANT_DC233C |
93 | bool "dc233c - Diamond 233L Standard Core Rev.C (LE)" | |
94 | select MMU | |
a1a2bdec | 95 | select HAVE_XTENSA_GPIO32 |
d0b73b48 PD |
96 | help |
97 | This variant refers to Tensilica's Diamond 233L Standard core Rev.C (LE). | |
98 | ||
000af2c5 JW |
99 | config XTENSA_VARIANT_S6000 |
100 | bool "s6000 - Stretch software configurable processor" | |
101 | select VARIANT_IRQ_SWITCH | |
102 | select ARCH_REQUIRE_GPIOLIB | |
b070a03f | 103 | select XTENSA_CALIBRATE_CCOUNT |
8e1a6dd2 CZ |
104 | endchoice |
105 | ||
8e1a6dd2 CZ |
106 | config XTENSA_UNALIGNED_USER |
107 | bool "Unaligned memory access in use space" | |
35f9cd08 JW |
108 | help |
109 | The Xtensa architecture currently does not handle unaligned | |
110 | memory accesses in hardware but through an exception handler. | |
111 | Per default, unaligned memory accesses are disabled in user space. | |
8e1a6dd2 | 112 | |
35f9cd08 | 113 | Say Y here to enable unaligned memory access in user space. |
8e1a6dd2 | 114 | |
bd96efe1 | 115 | source "kernel/Kconfig.preempt" |
8e1a6dd2 | 116 | |
f615136c MF |
117 | config HAVE_SMP |
118 | bool "System Supports SMP (MX)" | |
119 | depends on MAY_HAVE_SMP | |
120 | select XTENSA_MX | |
121 | help | |
122 | This option is use to indicate that the system-on-a-chip (SOC) | |
123 | supports Multiprocessing. Multiprocessor support implemented above | |
124 | the CPU core definition and currently needs to be selected manually. | |
125 | ||
126 | Multiprocessor support in implemented with external cache and | |
127 | interrupt controlers. | |
128 | ||
129 | The MX interrupt distributer adds Interprocessor Interrupts | |
130 | and causes the IRQ numbers to be increased by 4 for devices | |
131 | like the open cores ethernet driver and the serial interface. | |
132 | ||
133 | You still have to select "Enable SMP" to enable SMP on this SOC. | |
134 | ||
135 | config SMP | |
136 | bool "Enable Symmetric multi-processing support" | |
137 | depends on HAVE_SMP | |
138 | select USE_GENERIC_SMP_HELPERS | |
139 | select GENERIC_SMP_IDLE_THREAD | |
140 | help | |
141 | Enabled SMP Software; allows more than one CPU/CORE | |
142 | to be activated during startup. | |
143 | ||
144 | config NR_CPUS | |
145 | depends on SMP | |
146 | int "Maximum number of CPUs (2-32)" | |
147 | range 2 32 | |
148 | default "4" | |
149 | ||
49b424fe MF |
150 | config HOTPLUG_CPU |
151 | bool "Enable CPU hotplug support" | |
152 | depends on SMP | |
153 | help | |
154 | Say Y here to allow turning CPUs off and on. CPUs can be | |
155 | controlled through /sys/devices/system/cpu. | |
156 | ||
157 | Say N if you want to disable CPU hotplug. | |
158 | ||
8e1a6dd2 CZ |
159 | config MATH_EMULATION |
160 | bool "Math emulation" | |
161 | help | |
162 | Can we use information of configuration file? | |
163 | ||
e85e335f MF |
164 | config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX |
165 | bool "Initialize Xtensa MMU inside the Linux kernel code" | |
166 | default y | |
167 | help | |
168 | Earlier version initialized the MMU in the exception vector | |
169 | before jumping to _startup in head.S and had an advantage that | |
170 | it was possible to place a software breakpoint at 'reset' and | |
171 | then enter your normal kernel breakpoints once the MMU was mapped | |
172 | to the kernel mappings (0XC0000000). | |
173 | ||
174 | This unfortunately doesn't work for U-Boot and likley also wont | |
175 | work for using KEXEC to have a hot kernel ready for doing a | |
176 | KDUMP. | |
177 | ||
178 | So now the MMU is initialized in head.S but it's necessary to | |
179 | use hardware breakpoints (gdb 'hbreak' cmd) to break at _startup. | |
180 | xt-gdb can't place a Software Breakpoint in the 0XD region prior | |
181 | to mapping the MMU and after mapping even if the area of low memory | |
182 | was mapped gdb wouldn't remove the breakpoint on hitting it as the | |
183 | PC wouldn't match. Since Hardware Breakpoints are recommended for | |
184 | Linux configurations it seems reasonable to just assume they exist | |
185 | and leave this older mechanism for unfortunate souls that choose | |
186 | not to follow Tensilica's recommendation. | |
187 | ||
188 | Selecting this will cause U-Boot to set the KERNEL Load and Entry | |
189 | address at 0x00003000 instead of the mapped std of 0xD0003000. | |
190 | ||
191 | If in doubt, say Y. | |
192 | ||
8e1a6dd2 CZ |
193 | endmenu |
194 | ||
35f9cd08 JW |
195 | config XTENSA_CALIBRATE_CCOUNT |
196 | def_bool n | |
197 | help | |
198 | On some platforms (XT2000, for example), the CPU clock rate can | |
199 | vary. The frequency can be determined, however, by measuring | |
200 | against a well known, fixed frequency, such as an UART oscillator. | |
201 | ||
202 | config SERIAL_CONSOLE | |
203 | def_bool n | |
204 | ||
35f9cd08 JW |
205 | menu "Bus options" |
206 | ||
207 | config PCI | |
208 | bool "PCI support" | |
209 | default y | |
210 | help | |
211 | Find out whether you have a PCI motherboard. PCI is the name of a | |
212 | bus system, i.e. the way the CPU talks to the other stuff inside | |
213 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
214 | VESA. If you have PCI, say Y, otherwise N. | |
215 | ||
216 | source "drivers/pci/Kconfig" | |
217 | ||
35e71f90 CZ |
218 | endmenu |
219 | ||
8e1a6dd2 CZ |
220 | menu "Platform options" |
221 | ||
222 | choice | |
223 | prompt "Xtensa System Type" | |
224 | default XTENSA_PLATFORM_ISS | |
225 | ||
226 | config XTENSA_PLATFORM_ISS | |
227 | bool "ISS" | |
4f73bc4d | 228 | depends on TTY |
35f9cd08 JW |
229 | select XTENSA_CALIBRATE_CCOUNT |
230 | select SERIAL_CONSOLE | |
8e1a6dd2 CZ |
231 | help |
232 | ISS is an acronym for Tensilica's Instruction Set Simulator. | |
233 | ||
234 | config XTENSA_PLATFORM_XT2000 | |
235 | bool "XT2000" | |
236 | help | |
237 | XT2000 is the name of Tensilica's feature-rich emulation platform. | |
238 | This hardware is capable of running a full Linux distribution. | |
239 | ||
f82e939f JW |
240 | config XTENSA_PLATFORM_S6105 |
241 | bool "S6105" | |
242 | select SERIAL_CONSOLE | |
d046f77e | 243 | select NO_IOPORT |
f82e939f | 244 | |
0d456bad MF |
245 | config XTENSA_PLATFORM_XTFPGA |
246 | bool "XTFPGA" | |
247 | select SERIAL_CONSOLE | |
248 | select ETHOC | |
249 | select XTENSA_CALIBRATE_CCOUNT | |
250 | help | |
251 | XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). | |
252 | This hardware is capable of running a full Linux distribution. | |
253 | ||
8e1a6dd2 CZ |
254 | endchoice |
255 | ||
256 | ||
8e1a6dd2 CZ |
257 | config XTENSA_CPU_CLOCK |
258 | int "CPU clock rate [MHz]" | |
259 | depends on !XTENSA_CALIBRATE_CCOUNT | |
35f9cd08 | 260 | default 16 |
8e1a6dd2 CZ |
261 | |
262 | config GENERIC_CALIBRATE_DELAY | |
263 | bool "Auto calibration of the BogoMIPS value" | |
35f9cd08 | 264 | help |
82300bf4 | 265 | The BogoMIPS value can easily be derived from the CPU frequency. |
8e1a6dd2 CZ |
266 | |
267 | config CMDLINE_BOOL | |
268 | bool "Default bootloader kernel arguments" | |
269 | ||
270 | config CMDLINE | |
271 | string "Initial kernel command string" | |
272 | depends on CMDLINE_BOOL | |
273 | default "console=ttyS0,38400 root=/dev/ram" | |
274 | help | |
275 | On some architectures (EBSA110 and CATS), there is currently no way | |
276 | for the boot loader to pass arguments to the kernel. For these | |
277 | architectures, you should supply some command-line options at build | |
278 | time by entering them here. As a minimum, you should specify the | |
279 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
280 | ||
da844a81 MF |
281 | config USE_OF |
282 | bool "Flattened Device Tree support" | |
283 | select OF | |
284 | select OF_EARLY_FLATTREE | |
285 | help | |
286 | Include support for flattened device tree machine descriptions. | |
287 | ||
288 | config BUILTIN_DTB | |
289 | string "DTB to build into the kernel image" | |
290 | depends on OF | |
291 | ||
b6c7e873 VP |
292 | config BLK_DEV_SIMDISK |
293 | tristate "Host file-based simulated block device support" | |
294 | default n | |
295 | depends on XTENSA_PLATFORM_ISS | |
296 | help | |
297 | Create block devices that map to files in the host file system. | |
298 | Device binding to host file may be changed at runtime via proc | |
299 | interface provided the device is not in use. | |
300 | ||
301 | config BLK_DEV_SIMDISK_COUNT | |
302 | int "Number of host file-based simulated block devices" | |
303 | range 1 10 | |
304 | depends on BLK_DEV_SIMDISK | |
305 | default 2 | |
306 | help | |
307 | This is the default minimal number of created block devices. | |
308 | Kernel/module parameter 'simdisk_count' may be used to change this | |
309 | value at runtime. More file names (but no more than 10) may be | |
310 | specified as parameters, simdisk_count grows accordingly. | |
311 | ||
312 | config SIMDISK0_FILENAME | |
313 | string "Host filename for the first simulated device" | |
314 | depends on BLK_DEV_SIMDISK = y | |
315 | default "" | |
316 | help | |
317 | Attach a first simdisk to a host file. Conventionally, this file | |
318 | contains a root file system. | |
319 | ||
320 | config SIMDISK1_FILENAME | |
321 | string "Host filename for the second simulated device" | |
322 | depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1 | |
323 | default "" | |
324 | help | |
325 | Another simulated disk in a host file for a buildroot-independent | |
326 | storage. | |
327 | ||
82300bf4 CZ |
328 | source "mm/Kconfig" |
329 | ||
8e1a6dd2 CZ |
330 | source "drivers/pcmcia/Kconfig" |
331 | ||
332 | source "drivers/pci/hotplug/Kconfig" | |
333 | ||
334 | endmenu | |
335 | ||
cab00891 | 336 | menu "Executable file formats" |
8e1a6dd2 | 337 | |
8e1a6dd2 CZ |
338 | source "fs/Kconfig.binfmt" |
339 | ||
340 | endmenu | |
341 | ||
d5950b43 SR |
342 | source "net/Kconfig" |
343 | ||
8e1a6dd2 CZ |
344 | source "drivers/Kconfig" |
345 | ||
346 | source "fs/Kconfig" | |
347 | ||
8e1a6dd2 CZ |
348 | source "arch/xtensa/Kconfig.debug" |
349 | ||
350 | source "security/Kconfig" | |
351 | ||
352 | source "crypto/Kconfig" | |
353 | ||
354 | source "lib/Kconfig" | |
355 | ||
356 |