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