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 |
496543c4 | 22 | select HAVE_IRQ_TIME_ACCOUNTING |
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 | ||
8e1a6dd2 CZ |
68 | menu "Processor type and features" |
69 | ||
70 | choice | |
71 | prompt "Xtensa Processor Configuration" | |
173d6681 | 72 | default XTENSA_VARIANT_FSF |
8e1a6dd2 | 73 | |
173d6681 | 74 | config XTENSA_VARIANT_FSF |
0025427e | 75 | bool "fsf - default (not generic) configuration" |
35f9cd08 | 76 | select MMU |
0025427e CZ |
77 | |
78 | config XTENSA_VARIANT_DC232B | |
79 | bool "dc232b - Diamond 232L Standard Core Rev.B (LE)" | |
35f9cd08 | 80 | select MMU |
0025427e | 81 | help |
35f9cd08 | 82 | This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE). |
000af2c5 | 83 | |
d0b73b48 PD |
84 | config XTENSA_VARIANT_DC233C |
85 | bool "dc233c - Diamond 233L Standard Core Rev.C (LE)" | |
86 | select MMU | |
87 | help | |
88 | This variant refers to Tensilica's Diamond 233L Standard core Rev.C (LE). | |
89 | ||
000af2c5 JW |
90 | config XTENSA_VARIANT_S6000 |
91 | bool "s6000 - Stretch software configurable processor" | |
92 | select VARIANT_IRQ_SWITCH | |
93 | select ARCH_REQUIRE_GPIOLIB | |
b070a03f | 94 | select XTENSA_CALIBRATE_CCOUNT |
8e1a6dd2 CZ |
95 | endchoice |
96 | ||
8e1a6dd2 CZ |
97 | config XTENSA_UNALIGNED_USER |
98 | bool "Unaligned memory access in use space" | |
35f9cd08 JW |
99 | help |
100 | The Xtensa architecture currently does not handle unaligned | |
101 | memory accesses in hardware but through an exception handler. | |
102 | Per default, unaligned memory accesses are disabled in user space. | |
8e1a6dd2 | 103 | |
35f9cd08 | 104 | Say Y here to enable unaligned memory access in user space. |
8e1a6dd2 | 105 | |
bd96efe1 | 106 | source "kernel/Kconfig.preempt" |
8e1a6dd2 CZ |
107 | |
108 | config MATH_EMULATION | |
109 | bool "Math emulation" | |
110 | help | |
111 | Can we use information of configuration file? | |
112 | ||
e85e335f MF |
113 | config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX |
114 | bool "Initialize Xtensa MMU inside the Linux kernel code" | |
115 | default y | |
116 | help | |
117 | Earlier version initialized the MMU in the exception vector | |
118 | before jumping to _startup in head.S and had an advantage that | |
119 | it was possible to place a software breakpoint at 'reset' and | |
120 | then enter your normal kernel breakpoints once the MMU was mapped | |
121 | to the kernel mappings (0XC0000000). | |
122 | ||
123 | This unfortunately doesn't work for U-Boot and likley also wont | |
124 | work for using KEXEC to have a hot kernel ready for doing a | |
125 | KDUMP. | |
126 | ||
127 | So now the MMU is initialized in head.S but it's necessary to | |
128 | use hardware breakpoints (gdb 'hbreak' cmd) to break at _startup. | |
129 | xt-gdb can't place a Software Breakpoint in the 0XD region prior | |
130 | to mapping the MMU and after mapping even if the area of low memory | |
131 | was mapped gdb wouldn't remove the breakpoint on hitting it as the | |
132 | PC wouldn't match. Since Hardware Breakpoints are recommended for | |
133 | Linux configurations it seems reasonable to just assume they exist | |
134 | and leave this older mechanism for unfortunate souls that choose | |
135 | not to follow Tensilica's recommendation. | |
136 | ||
137 | Selecting this will cause U-Boot to set the KERNEL Load and Entry | |
138 | address at 0x00003000 instead of the mapped std of 0xD0003000. | |
139 | ||
140 | If in doubt, say Y. | |
141 | ||
8e1a6dd2 CZ |
142 | endmenu |
143 | ||
35f9cd08 JW |
144 | config XTENSA_CALIBRATE_CCOUNT |
145 | def_bool n | |
146 | help | |
147 | On some platforms (XT2000, for example), the CPU clock rate can | |
148 | vary. The frequency can be determined, however, by measuring | |
149 | against a well known, fixed frequency, such as an UART oscillator. | |
150 | ||
151 | config SERIAL_CONSOLE | |
152 | def_bool n | |
153 | ||
154 | config XTENSA_ISS_NETWORK | |
155 | def_bool n | |
156 | ||
157 | menu "Bus options" | |
158 | ||
159 | config PCI | |
160 | bool "PCI support" | |
161 | default y | |
162 | help | |
163 | Find out whether you have a PCI motherboard. PCI is the name of a | |
164 | bus system, i.e. the way the CPU talks to the other stuff inside | |
165 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
166 | VESA. If you have PCI, say Y, otherwise N. | |
167 | ||
168 | source "drivers/pci/Kconfig" | |
169 | ||
35e71f90 CZ |
170 | endmenu |
171 | ||
8e1a6dd2 CZ |
172 | menu "Platform options" |
173 | ||
174 | choice | |
175 | prompt "Xtensa System Type" | |
176 | default XTENSA_PLATFORM_ISS | |
177 | ||
178 | config XTENSA_PLATFORM_ISS | |
179 | bool "ISS" | |
4f73bc4d | 180 | depends on TTY |
35f9cd08 JW |
181 | select XTENSA_CALIBRATE_CCOUNT |
182 | select SERIAL_CONSOLE | |
183 | select XTENSA_ISS_NETWORK | |
8e1a6dd2 CZ |
184 | help |
185 | ISS is an acronym for Tensilica's Instruction Set Simulator. | |
186 | ||
187 | config XTENSA_PLATFORM_XT2000 | |
188 | bool "XT2000" | |
189 | help | |
190 | XT2000 is the name of Tensilica's feature-rich emulation platform. | |
191 | This hardware is capable of running a full Linux distribution. | |
192 | ||
f82e939f JW |
193 | config XTENSA_PLATFORM_S6105 |
194 | bool "S6105" | |
195 | select SERIAL_CONSOLE | |
d046f77e | 196 | select NO_IOPORT |
f82e939f | 197 | |
0d456bad MF |
198 | config XTENSA_PLATFORM_XTFPGA |
199 | bool "XTFPGA" | |
200 | select SERIAL_CONSOLE | |
201 | select ETHOC | |
202 | select XTENSA_CALIBRATE_CCOUNT | |
203 | help | |
204 | XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). | |
205 | This hardware is capable of running a full Linux distribution. | |
206 | ||
8e1a6dd2 CZ |
207 | endchoice |
208 | ||
209 | ||
8e1a6dd2 CZ |
210 | config XTENSA_CPU_CLOCK |
211 | int "CPU clock rate [MHz]" | |
212 | depends on !XTENSA_CALIBRATE_CCOUNT | |
35f9cd08 | 213 | default 16 |
8e1a6dd2 CZ |
214 | |
215 | config GENERIC_CALIBRATE_DELAY | |
216 | bool "Auto calibration of the BogoMIPS value" | |
35f9cd08 | 217 | help |
82300bf4 | 218 | The BogoMIPS value can easily be derived from the CPU frequency. |
8e1a6dd2 CZ |
219 | |
220 | config CMDLINE_BOOL | |
221 | bool "Default bootloader kernel arguments" | |
222 | ||
223 | config CMDLINE | |
224 | string "Initial kernel command string" | |
225 | depends on CMDLINE_BOOL | |
226 | default "console=ttyS0,38400 root=/dev/ram" | |
227 | help | |
228 | On some architectures (EBSA110 and CATS), there is currently no way | |
229 | for the boot loader to pass arguments to the kernel. For these | |
230 | architectures, you should supply some command-line options at build | |
231 | time by entering them here. As a minimum, you should specify the | |
232 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
233 | ||
da844a81 MF |
234 | config USE_OF |
235 | bool "Flattened Device Tree support" | |
236 | select OF | |
237 | select OF_EARLY_FLATTREE | |
238 | help | |
239 | Include support for flattened device tree machine descriptions. | |
240 | ||
241 | config BUILTIN_DTB | |
242 | string "DTB to build into the kernel image" | |
243 | depends on OF | |
244 | ||
b6c7e873 VP |
245 | config BLK_DEV_SIMDISK |
246 | tristate "Host file-based simulated block device support" | |
247 | default n | |
248 | depends on XTENSA_PLATFORM_ISS | |
249 | help | |
250 | Create block devices that map to files in the host file system. | |
251 | Device binding to host file may be changed at runtime via proc | |
252 | interface provided the device is not in use. | |
253 | ||
254 | config BLK_DEV_SIMDISK_COUNT | |
255 | int "Number of host file-based simulated block devices" | |
256 | range 1 10 | |
257 | depends on BLK_DEV_SIMDISK | |
258 | default 2 | |
259 | help | |
260 | This is the default minimal number of created block devices. | |
261 | Kernel/module parameter 'simdisk_count' may be used to change this | |
262 | value at runtime. More file names (but no more than 10) may be | |
263 | specified as parameters, simdisk_count grows accordingly. | |
264 | ||
265 | config SIMDISK0_FILENAME | |
266 | string "Host filename for the first simulated device" | |
267 | depends on BLK_DEV_SIMDISK = y | |
268 | default "" | |
269 | help | |
270 | Attach a first simdisk to a host file. Conventionally, this file | |
271 | contains a root file system. | |
272 | ||
273 | config SIMDISK1_FILENAME | |
274 | string "Host filename for the second simulated device" | |
275 | depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1 | |
276 | default "" | |
277 | help | |
278 | Another simulated disk in a host file for a buildroot-independent | |
279 | storage. | |
280 | ||
82300bf4 CZ |
281 | source "mm/Kconfig" |
282 | ||
8e1a6dd2 CZ |
283 | source "drivers/pcmcia/Kconfig" |
284 | ||
285 | source "drivers/pci/hotplug/Kconfig" | |
286 | ||
287 | endmenu | |
288 | ||
cab00891 | 289 | menu "Executable file formats" |
8e1a6dd2 | 290 | |
8e1a6dd2 CZ |
291 | source "fs/Kconfig.binfmt" |
292 | ||
293 | endmenu | |
294 | ||
d5950b43 SR |
295 | source "net/Kconfig" |
296 | ||
8e1a6dd2 CZ |
297 | source "drivers/Kconfig" |
298 | ||
299 | source "fs/Kconfig" | |
300 | ||
8e1a6dd2 CZ |
301 | source "arch/xtensa/Kconfig.debug" |
302 | ||
303 | source "security/Kconfig" | |
304 | ||
305 | source "crypto/Kconfig" | |
306 | ||
307 | source "lib/Kconfig" | |
308 | ||
309 |