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 |
3b190a4a | 10 | select HAVE_GENERIC_HARDIRQS |
4febd95a | 11 | select VIRT_TO_BUS |
47a5d9dc | 12 | select GENERIC_IRQ_SHOW |
9f13a1fd | 13 | select GENERIC_CPU_DEVICES |
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 |
8e1a6dd2 CZ |
21 | help |
22 | Xtensa processors are 32-bit RISC machines designed by Tensilica | |
23 | primarily for embedded systems. These processors are both | |
24 | configurable and extensible. The Linux port to the Xtensa | |
25 | architecture supports all processor configurations and extensions, | |
26 | with reasonable minimum requirements. The Xtensa Linux project has | |
0ada4490 | 27 | a home page at <http://www.linux-xtensa.org/>. |
8e1a6dd2 | 28 | |
8e1a6dd2 | 29 | config RWSEM_XCHGADD_ALGORITHM |
35f9cd08 | 30 | def_bool y |
8e1a6dd2 | 31 | |
d4337aa5 | 32 | config GENERIC_HWEIGHT |
35f9cd08 | 33 | def_bool y |
d4337aa5 | 34 | |
f0d1b0b3 | 35 | config ARCH_HAS_ILOG2_U32 |
35f9cd08 | 36 | def_bool n |
f0d1b0b3 DH |
37 | |
38 | config ARCH_HAS_ILOG2_U64 | |
35f9cd08 | 39 | def_bool n |
f0d1b0b3 | 40 | |
5ea81769 | 41 | config NO_IOPORT |
d046f77e | 42 | def_bool n |
5ea81769 | 43 | |
bdc80787 PA |
44 | config HZ |
45 | int | |
46 | default 100 | |
47 | ||
8e1a6dd2 | 48 | source "init/Kconfig" |
dc52ddc0 | 49 | source "kernel/Kconfig.freezer" |
8e1a6dd2 | 50 | |
8f371c75 MF |
51 | config LOCKDEP_SUPPORT |
52 | def_bool y | |
53 | ||
3e4196a5 MF |
54 | config STACKTRACE_SUPPORT |
55 | def_bool y | |
56 | ||
c92931b2 MF |
57 | config TRACE_IRQFLAGS_SUPPORT |
58 | def_bool y | |
59 | ||
35f9cd08 JW |
60 | config MMU |
61 | def_bool n | |
62 | ||
4c0d2141 JW |
63 | config VARIANT_IRQ_SWITCH |
64 | def_bool n | |
65 | ||
8e1a6dd2 CZ |
66 | menu "Processor type and features" |
67 | ||
68 | choice | |
69 | prompt "Xtensa Processor Configuration" | |
173d6681 | 70 | default XTENSA_VARIANT_FSF |
8e1a6dd2 | 71 | |
173d6681 | 72 | config XTENSA_VARIANT_FSF |
0025427e | 73 | bool "fsf - default (not generic) configuration" |
35f9cd08 | 74 | select MMU |
0025427e CZ |
75 | |
76 | config XTENSA_VARIANT_DC232B | |
77 | bool "dc232b - Diamond 232L Standard Core Rev.B (LE)" | |
35f9cd08 | 78 | select MMU |
0025427e | 79 | help |
35f9cd08 | 80 | This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE). |
000af2c5 | 81 | |
d0b73b48 PD |
82 | config XTENSA_VARIANT_DC233C |
83 | bool "dc233c - Diamond 233L Standard Core Rev.C (LE)" | |
84 | select MMU | |
85 | help | |
86 | This variant refers to Tensilica's Diamond 233L Standard core Rev.C (LE). | |
87 | ||
000af2c5 JW |
88 | config XTENSA_VARIANT_S6000 |
89 | bool "s6000 - Stretch software configurable processor" | |
90 | select VARIANT_IRQ_SWITCH | |
91 | select ARCH_REQUIRE_GPIOLIB | |
b070a03f | 92 | select XTENSA_CALIBRATE_CCOUNT |
8e1a6dd2 CZ |
93 | endchoice |
94 | ||
8e1a6dd2 CZ |
95 | config XTENSA_UNALIGNED_USER |
96 | bool "Unaligned memory access in use space" | |
35f9cd08 JW |
97 | help |
98 | The Xtensa architecture currently does not handle unaligned | |
99 | memory accesses in hardware but through an exception handler. | |
100 | Per default, unaligned memory accesses are disabled in user space. | |
8e1a6dd2 | 101 | |
35f9cd08 | 102 | Say Y here to enable unaligned memory access in user space. |
8e1a6dd2 | 103 | |
bd96efe1 | 104 | source "kernel/Kconfig.preempt" |
8e1a6dd2 CZ |
105 | |
106 | config MATH_EMULATION | |
107 | bool "Math emulation" | |
108 | help | |
109 | Can we use information of configuration file? | |
110 | ||
e85e335f MF |
111 | config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX |
112 | bool "Initialize Xtensa MMU inside the Linux kernel code" | |
113 | default y | |
114 | help | |
115 | Earlier version initialized the MMU in the exception vector | |
116 | before jumping to _startup in head.S and had an advantage that | |
117 | it was possible to place a software breakpoint at 'reset' and | |
118 | then enter your normal kernel breakpoints once the MMU was mapped | |
119 | to the kernel mappings (0XC0000000). | |
120 | ||
121 | This unfortunately doesn't work for U-Boot and likley also wont | |
122 | work for using KEXEC to have a hot kernel ready for doing a | |
123 | KDUMP. | |
124 | ||
125 | So now the MMU is initialized in head.S but it's necessary to | |
126 | use hardware breakpoints (gdb 'hbreak' cmd) to break at _startup. | |
127 | xt-gdb can't place a Software Breakpoint in the 0XD region prior | |
128 | to mapping the MMU and after mapping even if the area of low memory | |
129 | was mapped gdb wouldn't remove the breakpoint on hitting it as the | |
130 | PC wouldn't match. Since Hardware Breakpoints are recommended for | |
131 | Linux configurations it seems reasonable to just assume they exist | |
132 | and leave this older mechanism for unfortunate souls that choose | |
133 | not to follow Tensilica's recommendation. | |
134 | ||
135 | Selecting this will cause U-Boot to set the KERNEL Load and Entry | |
136 | address at 0x00003000 instead of the mapped std of 0xD0003000. | |
137 | ||
138 | If in doubt, say Y. | |
139 | ||
8e1a6dd2 CZ |
140 | endmenu |
141 | ||
35f9cd08 JW |
142 | config XTENSA_CALIBRATE_CCOUNT |
143 | def_bool n | |
144 | help | |
145 | On some platforms (XT2000, for example), the CPU clock rate can | |
146 | vary. The frequency can be determined, however, by measuring | |
147 | against a well known, fixed frequency, such as an UART oscillator. | |
148 | ||
149 | config SERIAL_CONSOLE | |
150 | def_bool n | |
151 | ||
152 | config XTENSA_ISS_NETWORK | |
153 | def_bool n | |
154 | ||
155 | menu "Bus options" | |
156 | ||
157 | config PCI | |
158 | bool "PCI support" | |
159 | default y | |
160 | help | |
161 | Find out whether you have a PCI motherboard. PCI is the name of a | |
162 | bus system, i.e. the way the CPU talks to the other stuff inside | |
163 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
164 | VESA. If you have PCI, say Y, otherwise N. | |
165 | ||
166 | source "drivers/pci/Kconfig" | |
167 | ||
35e71f90 CZ |
168 | endmenu |
169 | ||
8e1a6dd2 CZ |
170 | menu "Platform options" |
171 | ||
172 | choice | |
173 | prompt "Xtensa System Type" | |
174 | default XTENSA_PLATFORM_ISS | |
175 | ||
176 | config XTENSA_PLATFORM_ISS | |
177 | bool "ISS" | |
4f73bc4d | 178 | depends on TTY |
35f9cd08 JW |
179 | select XTENSA_CALIBRATE_CCOUNT |
180 | select SERIAL_CONSOLE | |
181 | select XTENSA_ISS_NETWORK | |
8e1a6dd2 CZ |
182 | help |
183 | ISS is an acronym for Tensilica's Instruction Set Simulator. | |
184 | ||
185 | config XTENSA_PLATFORM_XT2000 | |
186 | bool "XT2000" | |
187 | help | |
188 | XT2000 is the name of Tensilica's feature-rich emulation platform. | |
189 | This hardware is capable of running a full Linux distribution. | |
190 | ||
f82e939f JW |
191 | config XTENSA_PLATFORM_S6105 |
192 | bool "S6105" | |
193 | select SERIAL_CONSOLE | |
d046f77e | 194 | select NO_IOPORT |
f82e939f | 195 | |
0d456bad MF |
196 | config XTENSA_PLATFORM_XTFPGA |
197 | bool "XTFPGA" | |
198 | select SERIAL_CONSOLE | |
199 | select ETHOC | |
200 | select XTENSA_CALIBRATE_CCOUNT | |
201 | help | |
202 | XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). | |
203 | This hardware is capable of running a full Linux distribution. | |
204 | ||
8e1a6dd2 CZ |
205 | endchoice |
206 | ||
207 | ||
8e1a6dd2 CZ |
208 | config XTENSA_CPU_CLOCK |
209 | int "CPU clock rate [MHz]" | |
210 | depends on !XTENSA_CALIBRATE_CCOUNT | |
35f9cd08 | 211 | default 16 |
8e1a6dd2 CZ |
212 | |
213 | config GENERIC_CALIBRATE_DELAY | |
214 | bool "Auto calibration of the BogoMIPS value" | |
35f9cd08 | 215 | help |
82300bf4 | 216 | The BogoMIPS value can easily be derived from the CPU frequency. |
8e1a6dd2 CZ |
217 | |
218 | config CMDLINE_BOOL | |
219 | bool "Default bootloader kernel arguments" | |
220 | ||
221 | config CMDLINE | |
222 | string "Initial kernel command string" | |
223 | depends on CMDLINE_BOOL | |
224 | default "console=ttyS0,38400 root=/dev/ram" | |
225 | help | |
226 | On some architectures (EBSA110 and CATS), there is currently no way | |
227 | for the boot loader to pass arguments to the kernel. For these | |
228 | architectures, you should supply some command-line options at build | |
229 | time by entering them here. As a minimum, you should specify the | |
230 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
231 | ||
da844a81 MF |
232 | config USE_OF |
233 | bool "Flattened Device Tree support" | |
234 | select OF | |
235 | select OF_EARLY_FLATTREE | |
236 | help | |
237 | Include support for flattened device tree machine descriptions. | |
238 | ||
239 | config BUILTIN_DTB | |
240 | string "DTB to build into the kernel image" | |
241 | depends on OF | |
242 | ||
b6c7e873 VP |
243 | config BLK_DEV_SIMDISK |
244 | tristate "Host file-based simulated block device support" | |
245 | default n | |
246 | depends on XTENSA_PLATFORM_ISS | |
247 | help | |
248 | Create block devices that map to files in the host file system. | |
249 | Device binding to host file may be changed at runtime via proc | |
250 | interface provided the device is not in use. | |
251 | ||
252 | config BLK_DEV_SIMDISK_COUNT | |
253 | int "Number of host file-based simulated block devices" | |
254 | range 1 10 | |
255 | depends on BLK_DEV_SIMDISK | |
256 | default 2 | |
257 | help | |
258 | This is the default minimal number of created block devices. | |
259 | Kernel/module parameter 'simdisk_count' may be used to change this | |
260 | value at runtime. More file names (but no more than 10) may be | |
261 | specified as parameters, simdisk_count grows accordingly. | |
262 | ||
263 | config SIMDISK0_FILENAME | |
264 | string "Host filename for the first simulated device" | |
265 | depends on BLK_DEV_SIMDISK = y | |
266 | default "" | |
267 | help | |
268 | Attach a first simdisk to a host file. Conventionally, this file | |
269 | contains a root file system. | |
270 | ||
271 | config SIMDISK1_FILENAME | |
272 | string "Host filename for the second simulated device" | |
273 | depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1 | |
274 | default "" | |
275 | help | |
276 | Another simulated disk in a host file for a buildroot-independent | |
277 | storage. | |
278 | ||
82300bf4 CZ |
279 | source "mm/Kconfig" |
280 | ||
8e1a6dd2 CZ |
281 | source "drivers/pcmcia/Kconfig" |
282 | ||
283 | source "drivers/pci/hotplug/Kconfig" | |
284 | ||
285 | endmenu | |
286 | ||
cab00891 | 287 | menu "Executable file formats" |
8e1a6dd2 | 288 | |
8e1a6dd2 CZ |
289 | source "fs/Kconfig.binfmt" |
290 | ||
291 | endmenu | |
292 | ||
d5950b43 SR |
293 | source "net/Kconfig" |
294 | ||
8e1a6dd2 CZ |
295 | source "drivers/Kconfig" |
296 | ||
297 | source "fs/Kconfig" | |
298 | ||
8e1a6dd2 CZ |
299 | source "arch/xtensa/Kconfig.debug" |
300 | ||
301 | source "security/Kconfig" | |
302 | ||
303 | source "crypto/Kconfig" | |
304 | ||
305 | source "lib/Kconfig" | |
306 | ||
307 |