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 |
bda8932d | 23 | select COMMON_CLK |
8e1a6dd2 CZ |
24 | help |
25 | Xtensa processors are 32-bit RISC machines designed by Tensilica | |
26 | primarily for embedded systems. These processors are both | |
27 | configurable and extensible. The Linux port to the Xtensa | |
28 | architecture supports all processor configurations and extensions, | |
29 | with reasonable minimum requirements. The Xtensa Linux project has | |
0ada4490 | 30 | a home page at <http://www.linux-xtensa.org/>. |
8e1a6dd2 | 31 | |
8e1a6dd2 | 32 | config RWSEM_XCHGADD_ALGORITHM |
35f9cd08 | 33 | def_bool y |
8e1a6dd2 | 34 | |
d4337aa5 | 35 | config GENERIC_HWEIGHT |
35f9cd08 | 36 | def_bool y |
d4337aa5 | 37 | |
f0d1b0b3 | 38 | config ARCH_HAS_ILOG2_U32 |
35f9cd08 | 39 | def_bool n |
f0d1b0b3 DH |
40 | |
41 | config ARCH_HAS_ILOG2_U64 | |
35f9cd08 | 42 | def_bool n |
f0d1b0b3 | 43 | |
5ea81769 | 44 | config NO_IOPORT |
d046f77e | 45 | def_bool n |
5ea81769 | 46 | |
bdc80787 PA |
47 | config HZ |
48 | int | |
49 | default 100 | |
50 | ||
8e1a6dd2 | 51 | source "init/Kconfig" |
dc52ddc0 | 52 | source "kernel/Kconfig.freezer" |
8e1a6dd2 | 53 | |
8f371c75 MF |
54 | config LOCKDEP_SUPPORT |
55 | def_bool y | |
56 | ||
3e4196a5 MF |
57 | config STACKTRACE_SUPPORT |
58 | def_bool y | |
59 | ||
c92931b2 MF |
60 | config TRACE_IRQFLAGS_SUPPORT |
61 | def_bool y | |
62 | ||
35f9cd08 JW |
63 | config MMU |
64 | def_bool n | |
65 | ||
4c0d2141 JW |
66 | config VARIANT_IRQ_SWITCH |
67 | def_bool n | |
68 | ||
a1a2bdec BS |
69 | config HAVE_XTENSA_GPIO32 |
70 | def_bool n | |
71 | ||
f615136c MF |
72 | config MAY_HAVE_SMP |
73 | def_bool n | |
74 | ||
8e1a6dd2 CZ |
75 | menu "Processor type and features" |
76 | ||
77 | choice | |
78 | prompt "Xtensa Processor Configuration" | |
173d6681 | 79 | default XTENSA_VARIANT_FSF |
8e1a6dd2 | 80 | |
173d6681 | 81 | config XTENSA_VARIANT_FSF |
0025427e | 82 | bool "fsf - default (not generic) configuration" |
35f9cd08 | 83 | select MMU |
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 | |
f615136c MF |
138 | select GENERIC_SMP_IDLE_THREAD |
139 | help | |
140 | Enabled SMP Software; allows more than one CPU/CORE | |
141 | to be activated during startup. | |
142 | ||
143 | config NR_CPUS | |
144 | depends on SMP | |
145 | int "Maximum number of CPUs (2-32)" | |
146 | range 2 32 | |
147 | default "4" | |
148 | ||
49b424fe MF |
149 | config HOTPLUG_CPU |
150 | bool "Enable CPU hotplug support" | |
151 | depends on SMP | |
152 | help | |
153 | Say Y here to allow turning CPUs off and on. CPUs can be | |
154 | controlled through /sys/devices/system/cpu. | |
155 | ||
156 | Say N if you want to disable CPU hotplug. | |
157 | ||
8e1a6dd2 CZ |
158 | config MATH_EMULATION |
159 | bool "Math emulation" | |
160 | help | |
161 | Can we use information of configuration file? | |
162 | ||
e85e335f MF |
163 | config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX |
164 | bool "Initialize Xtensa MMU inside the Linux kernel code" | |
165 | default y | |
166 | help | |
167 | Earlier version initialized the MMU in the exception vector | |
168 | before jumping to _startup in head.S and had an advantage that | |
169 | it was possible to place a software breakpoint at 'reset' and | |
170 | then enter your normal kernel breakpoints once the MMU was mapped | |
171 | to the kernel mappings (0XC0000000). | |
172 | ||
173 | This unfortunately doesn't work for U-Boot and likley also wont | |
174 | work for using KEXEC to have a hot kernel ready for doing a | |
175 | KDUMP. | |
176 | ||
177 | So now the MMU is initialized in head.S but it's necessary to | |
178 | use hardware breakpoints (gdb 'hbreak' cmd) to break at _startup. | |
179 | xt-gdb can't place a Software Breakpoint in the 0XD region prior | |
180 | to mapping the MMU and after mapping even if the area of low memory | |
181 | was mapped gdb wouldn't remove the breakpoint on hitting it as the | |
182 | PC wouldn't match. Since Hardware Breakpoints are recommended for | |
183 | Linux configurations it seems reasonable to just assume they exist | |
184 | and leave this older mechanism for unfortunate souls that choose | |
185 | not to follow Tensilica's recommendation. | |
186 | ||
187 | Selecting this will cause U-Boot to set the KERNEL Load and Entry | |
188 | address at 0x00003000 instead of the mapped std of 0xD0003000. | |
189 | ||
190 | If in doubt, say Y. | |
191 | ||
8e1a6dd2 CZ |
192 | endmenu |
193 | ||
35f9cd08 JW |
194 | config XTENSA_CALIBRATE_CCOUNT |
195 | def_bool n | |
196 | help | |
197 | On some platforms (XT2000, for example), the CPU clock rate can | |
198 | vary. The frequency can be determined, however, by measuring | |
199 | against a well known, fixed frequency, such as an UART oscillator. | |
200 | ||
201 | config SERIAL_CONSOLE | |
202 | def_bool n | |
203 | ||
35f9cd08 JW |
204 | menu "Bus options" |
205 | ||
206 | config PCI | |
207 | bool "PCI support" | |
208 | default y | |
209 | help | |
210 | Find out whether you have a PCI motherboard. PCI is the name of a | |
211 | bus system, i.e. the way the CPU talks to the other stuff inside | |
212 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
213 | VESA. If you have PCI, say Y, otherwise N. | |
214 | ||
215 | source "drivers/pci/Kconfig" | |
216 | ||
35e71f90 CZ |
217 | endmenu |
218 | ||
8e1a6dd2 CZ |
219 | menu "Platform options" |
220 | ||
221 | choice | |
222 | prompt "Xtensa System Type" | |
223 | default XTENSA_PLATFORM_ISS | |
224 | ||
225 | config XTENSA_PLATFORM_ISS | |
226 | bool "ISS" | |
4f73bc4d | 227 | depends on TTY |
35f9cd08 JW |
228 | select XTENSA_CALIBRATE_CCOUNT |
229 | select SERIAL_CONSOLE | |
8e1a6dd2 CZ |
230 | help |
231 | ISS is an acronym for Tensilica's Instruction Set Simulator. | |
232 | ||
233 | config XTENSA_PLATFORM_XT2000 | |
234 | bool "XT2000" | |
235 | help | |
236 | XT2000 is the name of Tensilica's feature-rich emulation platform. | |
237 | This hardware is capable of running a full Linux distribution. | |
238 | ||
f82e939f JW |
239 | config XTENSA_PLATFORM_S6105 |
240 | bool "S6105" | |
241 | select SERIAL_CONSOLE | |
d046f77e | 242 | select NO_IOPORT |
f82e939f | 243 | |
0d456bad MF |
244 | config XTENSA_PLATFORM_XTFPGA |
245 | bool "XTFPGA" | |
246 | select SERIAL_CONSOLE | |
247 | select ETHOC | |
248 | select XTENSA_CALIBRATE_CCOUNT | |
249 | help | |
250 | XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). | |
251 | This hardware is capable of running a full Linux distribution. | |
252 | ||
8e1a6dd2 CZ |
253 | endchoice |
254 | ||
255 | ||
8e1a6dd2 CZ |
256 | config XTENSA_CPU_CLOCK |
257 | int "CPU clock rate [MHz]" | |
258 | depends on !XTENSA_CALIBRATE_CCOUNT | |
35f9cd08 | 259 | default 16 |
8e1a6dd2 CZ |
260 | |
261 | config GENERIC_CALIBRATE_DELAY | |
262 | bool "Auto calibration of the BogoMIPS value" | |
35f9cd08 | 263 | help |
82300bf4 | 264 | The BogoMIPS value can easily be derived from the CPU frequency. |
8e1a6dd2 CZ |
265 | |
266 | config CMDLINE_BOOL | |
267 | bool "Default bootloader kernel arguments" | |
268 | ||
269 | config CMDLINE | |
270 | string "Initial kernel command string" | |
271 | depends on CMDLINE_BOOL | |
272 | default "console=ttyS0,38400 root=/dev/ram" | |
273 | help | |
274 | On some architectures (EBSA110 and CATS), there is currently no way | |
275 | for the boot loader to pass arguments to the kernel. For these | |
276 | architectures, you should supply some command-line options at build | |
277 | time by entering them here. As a minimum, you should specify the | |
278 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
279 | ||
da844a81 MF |
280 | config USE_OF |
281 | bool "Flattened Device Tree support" | |
282 | select OF | |
283 | select OF_EARLY_FLATTREE | |
284 | help | |
285 | Include support for flattened device tree machine descriptions. | |
286 | ||
287 | config BUILTIN_DTB | |
288 | string "DTB to build into the kernel image" | |
289 | depends on OF | |
290 | ||
b6c7e873 VP |
291 | config BLK_DEV_SIMDISK |
292 | tristate "Host file-based simulated block device support" | |
293 | default n | |
294 | depends on XTENSA_PLATFORM_ISS | |
295 | help | |
296 | Create block devices that map to files in the host file system. | |
297 | Device binding to host file may be changed at runtime via proc | |
298 | interface provided the device is not in use. | |
299 | ||
300 | config BLK_DEV_SIMDISK_COUNT | |
301 | int "Number of host file-based simulated block devices" | |
302 | range 1 10 | |
303 | depends on BLK_DEV_SIMDISK | |
304 | default 2 | |
305 | help | |
306 | This is the default minimal number of created block devices. | |
307 | Kernel/module parameter 'simdisk_count' may be used to change this | |
308 | value at runtime. More file names (but no more than 10) may be | |
309 | specified as parameters, simdisk_count grows accordingly. | |
310 | ||
311 | config SIMDISK0_FILENAME | |
312 | string "Host filename for the first simulated device" | |
313 | depends on BLK_DEV_SIMDISK = y | |
314 | default "" | |
315 | help | |
316 | Attach a first simdisk to a host file. Conventionally, this file | |
317 | contains a root file system. | |
318 | ||
319 | config SIMDISK1_FILENAME | |
320 | string "Host filename for the second simulated device" | |
321 | depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1 | |
322 | default "" | |
323 | help | |
324 | Another simulated disk in a host file for a buildroot-independent | |
325 | storage. | |
326 | ||
82300bf4 CZ |
327 | source "mm/Kconfig" |
328 | ||
8e1a6dd2 CZ |
329 | source "drivers/pcmcia/Kconfig" |
330 | ||
331 | source "drivers/pci/hotplug/Kconfig" | |
332 | ||
333 | endmenu | |
334 | ||
cab00891 | 335 | menu "Executable file formats" |
8e1a6dd2 | 336 | |
8e1a6dd2 CZ |
337 | source "fs/Kconfig.binfmt" |
338 | ||
339 | endmenu | |
340 | ||
d5950b43 SR |
341 | source "net/Kconfig" |
342 | ||
8e1a6dd2 CZ |
343 | source "drivers/Kconfig" |
344 | ||
345 | source "fs/Kconfig" | |
346 | ||
8e1a6dd2 CZ |
347 | source "arch/xtensa/Kconfig.debug" |
348 | ||
349 | source "security/Kconfig" | |
350 | ||
351 | source "crypto/Kconfig" | |
352 | ||
353 | source "lib/Kconfig" | |
354 | ||
355 |