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Commit | Line | Data |
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8e1a6dd2 | 1 | config FRAME_POINTER |
35f9cd08 | 2 | def_bool n |
8e1a6dd2 | 3 | |
66701b14 | 4 | config ZONE_DMA |
35f9cd08 | 5 | def_bool y |
66701b14 | 6 | |
8e1a6dd2 | 7 | config XTENSA |
35f9cd08 | 8 | def_bool y |
ec7748b5 | 9 | select HAVE_IDE |
c66af411 | 10 | select GENERIC_ATOMIC64 |
3b190a4a | 11 | select HAVE_GENERIC_HARDIRQS |
4febd95a | 12 | select VIRT_TO_BUS |
47a5d9dc | 13 | select GENERIC_IRQ_SHOW |
9f13a1fd | 14 | select GENERIC_CPU_DEVICES |
d38efc1f MF |
15 | select MODULES_USE_ELF_RELA |
16 | select GENERIC_PCI_IOMAP | |
e969161b | 17 | select ARCH_WANT_IPC_PARSE_VERSION |
6ed65f37 | 18 | select ARCH_WANT_OPTIONAL_GPIOLIB |
3e41f9ba | 19 | select CLONE_BACKWARDS |
2206d5dd | 20 | select IRQ_DOMAIN |
e6ffe17e | 21 | select HAVE_OPROFILE |
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 | |
000af2c5 | 36 | config GENERIC_GPIO |
e98c5b5b | 37 | bool |
000af2c5 | 38 | |
f0d1b0b3 | 39 | config ARCH_HAS_ILOG2_U32 |
35f9cd08 | 40 | def_bool n |
f0d1b0b3 DH |
41 | |
42 | config ARCH_HAS_ILOG2_U64 | |
35f9cd08 | 43 | def_bool n |
f0d1b0b3 | 44 | |
5ea81769 | 45 | config NO_IOPORT |
d046f77e | 46 | def_bool n |
5ea81769 | 47 | |
bdc80787 PA |
48 | config HZ |
49 | int | |
50 | default 100 | |
51 | ||
8e1a6dd2 | 52 | source "init/Kconfig" |
dc52ddc0 | 53 | source "kernel/Kconfig.freezer" |
8e1a6dd2 | 54 | |
35f9cd08 JW |
55 | config MMU |
56 | def_bool n | |
57 | ||
4c0d2141 JW |
58 | config VARIANT_IRQ_SWITCH |
59 | def_bool n | |
60 | ||
8e1a6dd2 CZ |
61 | menu "Processor type and features" |
62 | ||
63 | choice | |
64 | prompt "Xtensa Processor Configuration" | |
173d6681 | 65 | default XTENSA_VARIANT_FSF |
8e1a6dd2 | 66 | |
173d6681 | 67 | config XTENSA_VARIANT_FSF |
0025427e | 68 | bool "fsf - default (not generic) configuration" |
35f9cd08 | 69 | select MMU |
0025427e CZ |
70 | |
71 | config XTENSA_VARIANT_DC232B | |
72 | bool "dc232b - Diamond 232L Standard Core Rev.B (LE)" | |
35f9cd08 | 73 | select MMU |
0025427e | 74 | help |
35f9cd08 | 75 | This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE). |
000af2c5 | 76 | |
d0b73b48 PD |
77 | config XTENSA_VARIANT_DC233C |
78 | bool "dc233c - Diamond 233L Standard Core Rev.C (LE)" | |
79 | select MMU | |
80 | help | |
81 | This variant refers to Tensilica's Diamond 233L Standard core Rev.C (LE). | |
82 | ||
000af2c5 JW |
83 | config XTENSA_VARIANT_S6000 |
84 | bool "s6000 - Stretch software configurable processor" | |
85 | select VARIANT_IRQ_SWITCH | |
86 | select ARCH_REQUIRE_GPIOLIB | |
b070a03f | 87 | select XTENSA_CALIBRATE_CCOUNT |
8e1a6dd2 CZ |
88 | endchoice |
89 | ||
8e1a6dd2 CZ |
90 | config XTENSA_UNALIGNED_USER |
91 | bool "Unaligned memory access in use space" | |
35f9cd08 JW |
92 | help |
93 | The Xtensa architecture currently does not handle unaligned | |
94 | memory accesses in hardware but through an exception handler. | |
95 | Per default, unaligned memory accesses are disabled in user space. | |
8e1a6dd2 | 96 | |
35f9cd08 | 97 | Say Y here to enable unaligned memory access in user space. |
8e1a6dd2 | 98 | |
bd96efe1 | 99 | source "kernel/Kconfig.preempt" |
8e1a6dd2 CZ |
100 | |
101 | config MATH_EMULATION | |
102 | bool "Math emulation" | |
103 | help | |
104 | Can we use information of configuration file? | |
105 | ||
e85e335f MF |
106 | config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX |
107 | bool "Initialize Xtensa MMU inside the Linux kernel code" | |
108 | default y | |
109 | help | |
110 | Earlier version initialized the MMU in the exception vector | |
111 | before jumping to _startup in head.S and had an advantage that | |
112 | it was possible to place a software breakpoint at 'reset' and | |
113 | then enter your normal kernel breakpoints once the MMU was mapped | |
114 | to the kernel mappings (0XC0000000). | |
115 | ||
116 | This unfortunately doesn't work for U-Boot and likley also wont | |
117 | work for using KEXEC to have a hot kernel ready for doing a | |
118 | KDUMP. | |
119 | ||
120 | So now the MMU is initialized in head.S but it's necessary to | |
121 | use hardware breakpoints (gdb 'hbreak' cmd) to break at _startup. | |
122 | xt-gdb can't place a Software Breakpoint in the 0XD region prior | |
123 | to mapping the MMU and after mapping even if the area of low memory | |
124 | was mapped gdb wouldn't remove the breakpoint on hitting it as the | |
125 | PC wouldn't match. Since Hardware Breakpoints are recommended for | |
126 | Linux configurations it seems reasonable to just assume they exist | |
127 | and leave this older mechanism for unfortunate souls that choose | |
128 | not to follow Tensilica's recommendation. | |
129 | ||
130 | Selecting this will cause U-Boot to set the KERNEL Load and Entry | |
131 | address at 0x00003000 instead of the mapped std of 0xD0003000. | |
132 | ||
133 | If in doubt, say Y. | |
134 | ||
8e1a6dd2 CZ |
135 | endmenu |
136 | ||
35f9cd08 JW |
137 | config XTENSA_CALIBRATE_CCOUNT |
138 | def_bool n | |
139 | help | |
140 | On some platforms (XT2000, for example), the CPU clock rate can | |
141 | vary. The frequency can be determined, however, by measuring | |
142 | against a well known, fixed frequency, such as an UART oscillator. | |
143 | ||
144 | config SERIAL_CONSOLE | |
145 | def_bool n | |
146 | ||
147 | config XTENSA_ISS_NETWORK | |
148 | def_bool n | |
149 | ||
150 | menu "Bus options" | |
151 | ||
152 | config PCI | |
153 | bool "PCI support" | |
154 | default y | |
155 | help | |
156 | Find out whether you have a PCI motherboard. PCI is the name of a | |
157 | bus system, i.e. the way the CPU talks to the other stuff inside | |
158 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
159 | VESA. If you have PCI, say Y, otherwise N. | |
160 | ||
161 | source "drivers/pci/Kconfig" | |
162 | ||
35e71f90 CZ |
163 | endmenu |
164 | ||
8e1a6dd2 CZ |
165 | menu "Platform options" |
166 | ||
167 | choice | |
168 | prompt "Xtensa System Type" | |
169 | default XTENSA_PLATFORM_ISS | |
170 | ||
171 | config XTENSA_PLATFORM_ISS | |
172 | bool "ISS" | |
4f73bc4d | 173 | depends on TTY |
35f9cd08 JW |
174 | select XTENSA_CALIBRATE_CCOUNT |
175 | select SERIAL_CONSOLE | |
176 | select XTENSA_ISS_NETWORK | |
8e1a6dd2 CZ |
177 | help |
178 | ISS is an acronym for Tensilica's Instruction Set Simulator. | |
179 | ||
180 | config XTENSA_PLATFORM_XT2000 | |
181 | bool "XT2000" | |
182 | help | |
183 | XT2000 is the name of Tensilica's feature-rich emulation platform. | |
184 | This hardware is capable of running a full Linux distribution. | |
185 | ||
f82e939f JW |
186 | config XTENSA_PLATFORM_S6105 |
187 | bool "S6105" | |
188 | select SERIAL_CONSOLE | |
d046f77e | 189 | select NO_IOPORT |
f82e939f | 190 | |
0d456bad MF |
191 | config XTENSA_PLATFORM_XTFPGA |
192 | bool "XTFPGA" | |
193 | select SERIAL_CONSOLE | |
194 | select ETHOC | |
195 | select XTENSA_CALIBRATE_CCOUNT | |
196 | help | |
197 | XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605). | |
198 | This hardware is capable of running a full Linux distribution. | |
199 | ||
8e1a6dd2 CZ |
200 | endchoice |
201 | ||
202 | ||
8e1a6dd2 CZ |
203 | config XTENSA_CPU_CLOCK |
204 | int "CPU clock rate [MHz]" | |
205 | depends on !XTENSA_CALIBRATE_CCOUNT | |
35f9cd08 | 206 | default 16 |
8e1a6dd2 CZ |
207 | |
208 | config GENERIC_CALIBRATE_DELAY | |
209 | bool "Auto calibration of the BogoMIPS value" | |
35f9cd08 | 210 | help |
82300bf4 | 211 | The BogoMIPS value can easily be derived from the CPU frequency. |
8e1a6dd2 CZ |
212 | |
213 | config CMDLINE_BOOL | |
214 | bool "Default bootloader kernel arguments" | |
215 | ||
216 | config CMDLINE | |
217 | string "Initial kernel command string" | |
218 | depends on CMDLINE_BOOL | |
219 | default "console=ttyS0,38400 root=/dev/ram" | |
220 | help | |
221 | On some architectures (EBSA110 and CATS), there is currently no way | |
222 | for the boot loader to pass arguments to the kernel. For these | |
223 | architectures, you should supply some command-line options at build | |
224 | time by entering them here. As a minimum, you should specify the | |
225 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
226 | ||
da844a81 MF |
227 | config USE_OF |
228 | bool "Flattened Device Tree support" | |
229 | select OF | |
230 | select OF_EARLY_FLATTREE | |
231 | help | |
232 | Include support for flattened device tree machine descriptions. | |
233 | ||
234 | config BUILTIN_DTB | |
235 | string "DTB to build into the kernel image" | |
236 | depends on OF | |
237 | ||
b6c7e873 VP |
238 | config BLK_DEV_SIMDISK |
239 | tristate "Host file-based simulated block device support" | |
240 | default n | |
241 | depends on XTENSA_PLATFORM_ISS | |
242 | help | |
243 | Create block devices that map to files in the host file system. | |
244 | Device binding to host file may be changed at runtime via proc | |
245 | interface provided the device is not in use. | |
246 | ||
247 | config BLK_DEV_SIMDISK_COUNT | |
248 | int "Number of host file-based simulated block devices" | |
249 | range 1 10 | |
250 | depends on BLK_DEV_SIMDISK | |
251 | default 2 | |
252 | help | |
253 | This is the default minimal number of created block devices. | |
254 | Kernel/module parameter 'simdisk_count' may be used to change this | |
255 | value at runtime. More file names (but no more than 10) may be | |
256 | specified as parameters, simdisk_count grows accordingly. | |
257 | ||
258 | config SIMDISK0_FILENAME | |
259 | string "Host filename for the first simulated device" | |
260 | depends on BLK_DEV_SIMDISK = y | |
261 | default "" | |
262 | help | |
263 | Attach a first simdisk to a host file. Conventionally, this file | |
264 | contains a root file system. | |
265 | ||
266 | config SIMDISK1_FILENAME | |
267 | string "Host filename for the second simulated device" | |
268 | depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1 | |
269 | default "" | |
270 | help | |
271 | Another simulated disk in a host file for a buildroot-independent | |
272 | storage. | |
273 | ||
82300bf4 CZ |
274 | source "mm/Kconfig" |
275 | ||
8e1a6dd2 CZ |
276 | source "drivers/pcmcia/Kconfig" |
277 | ||
278 | source "drivers/pci/hotplug/Kconfig" | |
279 | ||
280 | endmenu | |
281 | ||
cab00891 | 282 | menu "Executable file formats" |
8e1a6dd2 | 283 | |
8e1a6dd2 CZ |
284 | source "fs/Kconfig.binfmt" |
285 | ||
286 | endmenu | |
287 | ||
d5950b43 SR |
288 | source "net/Kconfig" |
289 | ||
8e1a6dd2 CZ |
290 | source "drivers/Kconfig" |
291 | ||
292 | source "fs/Kconfig" | |
293 | ||
8e1a6dd2 CZ |
294 | source "arch/xtensa/Kconfig.debug" |
295 | ||
296 | source "security/Kconfig" | |
297 | ||
298 | source "crypto/Kconfig" | |
299 | ||
300 | source "lib/Kconfig" | |
301 | ||
302 |