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 |
3b190a4a | 9 | select HAVE_GENERIC_HARDIRQS |
4febd95a | 10 | select VIRT_TO_BUS |
47a5d9dc | 11 | select GENERIC_IRQ_SHOW |
9f13a1fd | 12 | select GENERIC_CPU_DEVICES |
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 |
8e1a6dd2 CZ |
20 | help |
21 | Xtensa processors are 32-bit RISC machines designed by Tensilica | |
22 | primarily for embedded systems. These processors are both | |
23 | configurable and extensible. The Linux port to the Xtensa | |
24 | architecture supports all processor configurations and extensions, | |
25 | with reasonable minimum requirements. The Xtensa Linux project has | |
0ada4490 | 26 | a home page at <http://www.linux-xtensa.org/>. |
8e1a6dd2 | 27 | |
8e1a6dd2 | 28 | config RWSEM_XCHGADD_ALGORITHM |
35f9cd08 | 29 | def_bool y |
8e1a6dd2 | 30 | |
d4337aa5 | 31 | config GENERIC_HWEIGHT |
35f9cd08 | 32 | def_bool y |
d4337aa5 | 33 | |
f0d1b0b3 | 34 | config ARCH_HAS_ILOG2_U32 |
35f9cd08 | 35 | def_bool n |
f0d1b0b3 DH |
36 | |
37 | config ARCH_HAS_ILOG2_U64 | |
35f9cd08 | 38 | def_bool n |
f0d1b0b3 | 39 | |
5ea81769 | 40 | config NO_IOPORT |
d046f77e | 41 | def_bool n |
5ea81769 | 42 | |
bdc80787 PA |
43 | config HZ |
44 | int | |
45 | default 100 | |
46 | ||
8e1a6dd2 | 47 | source "init/Kconfig" |
dc52ddc0 | 48 | source "kernel/Kconfig.freezer" |
8e1a6dd2 | 49 | |
8f371c75 MF |
50 | config LOCKDEP_SUPPORT |
51 | def_bool y | |
52 | ||
3e4196a5 MF |
53 | config STACKTRACE_SUPPORT |
54 | def_bool y | |
55 | ||
c92931b2 MF |
56 | config TRACE_IRQFLAGS_SUPPORT |
57 | def_bool y | |
58 | ||
35f9cd08 JW |
59 | config MMU |
60 | def_bool n | |
61 | ||
4c0d2141 JW |
62 | config VARIANT_IRQ_SWITCH |
63 | def_bool n | |
64 | ||
8e1a6dd2 CZ |
65 | menu "Processor type and features" |
66 | ||
67 | choice | |
68 | prompt "Xtensa Processor Configuration" | |
173d6681 | 69 | default XTENSA_VARIANT_FSF |
8e1a6dd2 | 70 | |
173d6681 | 71 | config XTENSA_VARIANT_FSF |
0025427e | 72 | bool "fsf - default (not generic) configuration" |
35f9cd08 | 73 | select MMU |
0025427e CZ |
74 | |
75 | config XTENSA_VARIANT_DC232B | |
76 | bool "dc232b - Diamond 232L Standard Core Rev.B (LE)" | |
35f9cd08 | 77 | select MMU |
0025427e | 78 | help |
35f9cd08 | 79 | This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE). |
000af2c5 | 80 | |
d0b73b48 PD |
81 | config XTENSA_VARIANT_DC233C |
82 | bool "dc233c - Diamond 233L Standard Core Rev.C (LE)" | |
83 | select MMU | |
84 | help | |
85 | This variant refers to Tensilica's Diamond 233L Standard core Rev.C (LE). | |
86 | ||
000af2c5 JW |
87 | config XTENSA_VARIANT_S6000 |
88 | bool "s6000 - Stretch software configurable processor" | |
89 | select VARIANT_IRQ_SWITCH | |
90 | select ARCH_REQUIRE_GPIOLIB | |
b070a03f | 91 | select XTENSA_CALIBRATE_CCOUNT |
8e1a6dd2 CZ |
92 | endchoice |
93 | ||
8e1a6dd2 CZ |
94 | config XTENSA_UNALIGNED_USER |
95 | bool "Unaligned memory access in use space" | |
35f9cd08 JW |
96 | help |
97 | The Xtensa architecture currently does not handle unaligned | |
98 | memory accesses in hardware but through an exception handler. | |
99 | Per default, unaligned memory accesses are disabled in user space. | |
8e1a6dd2 | 100 | |
35f9cd08 | 101 | Say Y here to enable unaligned memory access in user space. |
8e1a6dd2 | 102 | |
bd96efe1 | 103 | source "kernel/Kconfig.preempt" |
8e1a6dd2 CZ |
104 | |
105 | config MATH_EMULATION | |
106 | bool "Math emulation" | |
107 | help | |
108 | Can we use information of configuration file? | |
109 | ||
e85e335f MF |
110 | config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX |
111 | bool "Initialize Xtensa MMU inside the Linux kernel code" | |
112 | default y | |
113 | help | |
114 | Earlier version initialized the MMU in the exception vector | |
115 | before jumping to _startup in head.S and had an advantage that | |
116 | it was possible to place a software breakpoint at 'reset' and | |
117 | then enter your normal kernel breakpoints once the MMU was mapped | |
118 | to the kernel mappings (0XC0000000). | |
119 | ||
120 | This unfortunately doesn't work for U-Boot and likley also wont | |
121 | work for using KEXEC to have a hot kernel ready for doing a | |
122 | KDUMP. | |
123 | ||
124 | So now the MMU is initialized in head.S but it's necessary to | |
125 | use hardware breakpoints (gdb 'hbreak' cmd) to break at _startup. | |
126 | xt-gdb can't place a Software Breakpoint in the 0XD region prior | |
127 | to mapping the MMU and after mapping even if the area of low memory | |
128 | was mapped gdb wouldn't remove the breakpoint on hitting it as the | |
129 | PC wouldn't match. Since Hardware Breakpoints are recommended for | |
130 | Linux configurations it seems reasonable to just assume they exist | |
131 | and leave this older mechanism for unfortunate souls that choose | |
132 | not to follow Tensilica's recommendation. | |
133 | ||
134 | Selecting this will cause U-Boot to set the KERNEL Load and Entry | |
135 | address at 0x00003000 instead of the mapped std of 0xD0003000. | |
136 | ||
137 | If in doubt, say Y. | |
138 | ||
8e1a6dd2 CZ |
139 | endmenu |
140 | ||
35f9cd08 JW |
141 | config XTENSA_CALIBRATE_CCOUNT |
142 | def_bool n | |
143 | help | |
144 | On some platforms (XT2000, for example), the CPU clock rate can | |
145 | vary. The frequency can be determined, however, by measuring | |
146 | against a well known, fixed frequency, such as an UART oscillator. | |
147 | ||
148 | config SERIAL_CONSOLE | |
149 | def_bool n | |
150 | ||
151 | config XTENSA_ISS_NETWORK | |
152 | def_bool n | |
153 | ||
154 | menu "Bus options" | |
155 | ||
156 | config PCI | |
157 | bool "PCI support" | |
158 | default y | |
159 | help | |
160 | Find out whether you have a PCI motherboard. PCI is the name of a | |
161 | bus system, i.e. the way the CPU talks to the other stuff inside | |
162 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
163 | VESA. If you have PCI, say Y, otherwise N. | |
164 | ||
165 | source "drivers/pci/Kconfig" | |
166 | ||
35e71f90 CZ |
167 | endmenu |
168 | ||
8e1a6dd2 CZ |
169 | menu "Platform options" |
170 | ||
171 | choice | |
172 | prompt "Xtensa System Type" | |
173 | default XTENSA_PLATFORM_ISS | |
174 | ||
175 | config XTENSA_PLATFORM_ISS | |
176 | bool "ISS" | |
4f73bc4d | 177 | depends on TTY |
35f9cd08 JW |
178 | select XTENSA_CALIBRATE_CCOUNT |
179 | select SERIAL_CONSOLE | |
180 | select XTENSA_ISS_NETWORK | |
8e1a6dd2 CZ |
181 | help |
182 | ISS is an acronym for Tensilica's Instruction Set Simulator. | |
183 | ||
184 | config XTENSA_PLATFORM_XT2000 | |
185 | bool "XT2000" | |
186 | help | |
187 | XT2000 is the name of Tensilica's feature-rich emulation platform. | |
188 | This hardware is capable of running a full Linux distribution. | |
189 | ||
f82e939f JW |
190 | config XTENSA_PLATFORM_S6105 |
191 | bool "S6105" | |
192 | select SERIAL_CONSOLE | |
d046f77e | 193 | select NO_IOPORT |
f82e939f | 194 | |
0d456bad MF |
195 | config XTENSA_PLATFORM_XTFPGA |
196 | bool "XTFPGA" | |
197 | select SERIAL_CONSOLE | |
198 | select ETHOC | |
199 | select XTENSA_CALIBRATE_CCOUNT | |
200 | help | |
201 | XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). | |
202 | This hardware is capable of running a full Linux distribution. | |
203 | ||
8e1a6dd2 CZ |
204 | endchoice |
205 | ||
206 | ||
8e1a6dd2 CZ |
207 | config XTENSA_CPU_CLOCK |
208 | int "CPU clock rate [MHz]" | |
209 | depends on !XTENSA_CALIBRATE_CCOUNT | |
35f9cd08 | 210 | default 16 |
8e1a6dd2 CZ |
211 | |
212 | config GENERIC_CALIBRATE_DELAY | |
213 | bool "Auto calibration of the BogoMIPS value" | |
35f9cd08 | 214 | help |
82300bf4 | 215 | The BogoMIPS value can easily be derived from the CPU frequency. |
8e1a6dd2 CZ |
216 | |
217 | config CMDLINE_BOOL | |
218 | bool "Default bootloader kernel arguments" | |
219 | ||
220 | config CMDLINE | |
221 | string "Initial kernel command string" | |
222 | depends on CMDLINE_BOOL | |
223 | default "console=ttyS0,38400 root=/dev/ram" | |
224 | help | |
225 | On some architectures (EBSA110 and CATS), there is currently no way | |
226 | for the boot loader to pass arguments to the kernel. For these | |
227 | architectures, you should supply some command-line options at build | |
228 | time by entering them here. As a minimum, you should specify the | |
229 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
230 | ||
da844a81 MF |
231 | config USE_OF |
232 | bool "Flattened Device Tree support" | |
233 | select OF | |
234 | select OF_EARLY_FLATTREE | |
235 | help | |
236 | Include support for flattened device tree machine descriptions. | |
237 | ||
238 | config BUILTIN_DTB | |
239 | string "DTB to build into the kernel image" | |
240 | depends on OF | |
241 | ||
b6c7e873 VP |
242 | config BLK_DEV_SIMDISK |
243 | tristate "Host file-based simulated block device support" | |
244 | default n | |
245 | depends on XTENSA_PLATFORM_ISS | |
246 | help | |
247 | Create block devices that map to files in the host file system. | |
248 | Device binding to host file may be changed at runtime via proc | |
249 | interface provided the device is not in use. | |
250 | ||
251 | config BLK_DEV_SIMDISK_COUNT | |
252 | int "Number of host file-based simulated block devices" | |
253 | range 1 10 | |
254 | depends on BLK_DEV_SIMDISK | |
255 | default 2 | |
256 | help | |
257 | This is the default minimal number of created block devices. | |
258 | Kernel/module parameter 'simdisk_count' may be used to change this | |
259 | value at runtime. More file names (but no more than 10) may be | |
260 | specified as parameters, simdisk_count grows accordingly. | |
261 | ||
262 | config SIMDISK0_FILENAME | |
263 | string "Host filename for the first simulated device" | |
264 | depends on BLK_DEV_SIMDISK = y | |
265 | default "" | |
266 | help | |
267 | Attach a first simdisk to a host file. Conventionally, this file | |
268 | contains a root file system. | |
269 | ||
270 | config SIMDISK1_FILENAME | |
271 | string "Host filename for the second simulated device" | |
272 | depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1 | |
273 | default "" | |
274 | help | |
275 | Another simulated disk in a host file for a buildroot-independent | |
276 | storage. | |
277 | ||
82300bf4 CZ |
278 | source "mm/Kconfig" |
279 | ||
8e1a6dd2 CZ |
280 | source "drivers/pcmcia/Kconfig" |
281 | ||
282 | source "drivers/pci/hotplug/Kconfig" | |
283 | ||
284 | endmenu | |
285 | ||
cab00891 | 286 | menu "Executable file formats" |
8e1a6dd2 | 287 | |
8e1a6dd2 CZ |
288 | source "fs/Kconfig.binfmt" |
289 | ||
9314cd7d MF |
290 | config XTFPGA_LCD |
291 | bool "Enable XTFPGA LCD driver" | |
292 | depends on XTENSA_PLATFORM_XTFPGA | |
293 | default n | |
294 | help | |
295 | There's a 2x16 LCD on most of XTFPGA boards, kernel may output | |
296 | progress messages there during bootup/shutdown. It may be useful | |
297 | during board bringup. | |
298 | ||
299 | If unsure, say N. | |
300 | ||
301 | config XTFPGA_LCD_BASE_ADDR | |
302 | hex "XTFPGA LCD base address" | |
303 | depends on XTFPGA_LCD | |
304 | default "0x0d0c0000" | |
305 | help | |
306 | Base address of the LCD controller inside KIO region. | |
307 | Different boards from XTFPGA family have LCD controller at different | |
308 | addresses. Please consult prototyping user guide for your board for | |
309 | the correct address. Wrong address here may lead to hardware lockup. | |
310 | ||
311 | config XTFPGA_LCD_8BIT_ACCESS | |
312 | bool "Use 8-bit access to XTFPGA LCD" | |
313 | depends on XTFPGA_LCD | |
314 | default n | |
315 | help | |
316 | LCD may be connected with 4- or 8-bit interface, 8-bit access may | |
317 | only be used with 8-bit interface. Please consult prototyping user | |
318 | guide for your board for the correct interface width. | |
319 | ||
8e1a6dd2 CZ |
320 | endmenu |
321 | ||
d5950b43 SR |
322 | source "net/Kconfig" |
323 | ||
8e1a6dd2 CZ |
324 | source "drivers/Kconfig" |
325 | ||
326 | source "fs/Kconfig" | |
327 | ||
8e1a6dd2 CZ |
328 | source "arch/xtensa/Kconfig.debug" |
329 | ||
330 | source "security/Kconfig" | |
331 | ||
332 | source "crypto/Kconfig" | |
333 | ||
334 | source "lib/Kconfig" | |
335 | ||
336 |