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TOMOYO Linux Cross Reference
Linux/arch/xtensa/Kconfig

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Diff markup

Differences between /arch/xtensa/Kconfig (Architecture mips) and /arch/ppc/Kconfig (Architecture ppc)


  1 # SPDX-License-Identifier: GPL-2.0                
  2 config XTENSA                                     
  3         def_bool y                                
  4         select ARCH_32BIT_OFF_T                   
  5         select ARCH_HAS_CPU_CACHE_ALIASING        
  6         select ARCH_HAS_BINFMT_FLAT if !MMU       
  7         select ARCH_HAS_CURRENT_STACK_POINTER     
  8         select ARCH_HAS_DEBUG_VM_PGTABLE          
  9         select ARCH_HAS_DMA_PREP_COHERENT if M    
 10         select ARCH_HAS_GCOV_PROFILE_ALL          
 11         select ARCH_HAS_KCOV                      
 12         select ARCH_HAS_SYNC_DMA_FOR_CPU if MM    
 13         select ARCH_HAS_SYNC_DMA_FOR_DEVICE if    
 14         select ARCH_HAS_DMA_SET_UNCACHED if MM    
 15         select ARCH_HAS_STRNCPY_FROM_USER if !    
 16         select ARCH_HAS_STRNLEN_USER              
 17         select ARCH_NEED_CMPXCHG_1_EMU            
 18         select ARCH_USE_MEMTEST                   
 19         select ARCH_USE_QUEUED_RWLOCKS            
 20         select ARCH_USE_QUEUED_SPINLOCKS          
 21         select ARCH_WANT_IPC_PARSE_VERSION        
 22         select BUILDTIME_TABLE_SORT               
 23         select CLONE_BACKWARDS                    
 24         select COMMON_CLK                         
 25         select DMA_NONCOHERENT_MMAP if MMU        
 26         select GENERIC_ATOMIC64                   
 27         select GENERIC_IRQ_SHOW                   
 28         select GENERIC_LIB_CMPDI2                 
 29         select GENERIC_LIB_MULDI3                 
 30         select GENERIC_LIB_UCMPDI2                
 31         select GENERIC_PCI_IOMAP                  
 32         select GENERIC_SCHED_CLOCK                
 33         select GENERIC_IOREMAP if MMU             
 34         select HAVE_ARCH_AUDITSYSCALL             
 35         select HAVE_ARCH_JUMP_LABEL if !XIP_KE    
 36         select HAVE_ARCH_KASAN if MMU && !XIP_    
 37         select HAVE_ARCH_KCSAN                    
 38         select HAVE_ARCH_SECCOMP_FILTER           
 39         select HAVE_ARCH_TRACEHOOK                
 40         select HAVE_ASM_MODVERSIONS               
 41         select HAVE_CONTEXT_TRACKING_USER         
 42         select HAVE_DEBUG_KMEMLEAK                
 43         select HAVE_DMA_CONTIGUOUS                
 44         select HAVE_EXIT_THREAD                   
 45         select HAVE_FUNCTION_TRACER               
 46         select HAVE_GCC_PLUGINS if GCC_VERSION    
 47         select HAVE_HW_BREAKPOINT if PERF_EVEN    
 48         select HAVE_IRQ_TIME_ACCOUNTING           
 49         select HAVE_PAGE_SIZE_4KB                 
 50         select HAVE_PCI                           
 51         select HAVE_PERF_EVENTS                   
 52         select HAVE_STACKPROTECTOR                
 53         select HAVE_SYSCALL_TRACEPOINTS           
 54         select HAVE_VIRT_CPU_ACCOUNTING_GEN       
 55         select IRQ_DOMAIN                         
 56         select LOCK_MM_AND_FIND_VMA               
 57         select MODULES_USE_ELF_RELA               
 58         select PERF_USE_VMALLOC                   
 59         select TRACE_IRQFLAGS_SUPPORT             
 60         help                                      
 61           Xtensa processors are 32-bit RISC ma    
 62           primarily for embedded systems.  The    
 63           configurable and extensible.  The Li    
 64           architecture supports all processor     
 65           with reasonable minimum requirements    
 66           a home page at <http://www.linux-xte    
 67                                                   
 68 config GENERIC_HWEIGHT                            
 69         def_bool y                                
 70                                                   
 71 config ARCH_HAS_ILOG2_U32                         
 72         def_bool n                                
 73                                                   
 74 config ARCH_HAS_ILOG2_U64                         
 75         def_bool n                                
 76                                                   
 77 config ARCH_MTD_XIP                               
 78         def_bool y                                
 79                                                   
 80 config NO_IOPORT_MAP                              
 81         def_bool n                                
 82                                                   
 83 config HZ                                         
 84         int                                       
 85         default 100                               
 86                                                   
 87 config LOCKDEP_SUPPORT                            
 88         def_bool y                                
 89                                                   
 90 config STACKTRACE_SUPPORT                         
 91         def_bool y                                
 92                                                   
 93 config MMU                                        
 94         def_bool n                                
 95         select PFAULT                             
 96                                                   
 97 config HAVE_XTENSA_GPIO32                         
 98         def_bool n                                
 99                                                   
100 config KASAN_SHADOW_OFFSET                        
101         hex                                       
102         default 0x6e400000                        
103                                                   
104 config CPU_BIG_ENDIAN                             
105         def_bool $(success,test "$(shell,echo     
106                                                   
107 config CPU_LITTLE_ENDIAN                          
108         def_bool !CPU_BIG_ENDIAN                  
109                                                   
110 config CC_HAVE_CALL0_ABI                          
111         def_bool $(success,test "$(shell,echo     
112                                                   
113 menu "Processor type and features"                
114                                                   
115 choice                                            
116         prompt "Xtensa Processor Configuration    
117         default XTENSA_VARIANT_FSF                
118                                                   
119 config XTENSA_VARIANT_FSF                         
120         bool "fsf - default (not generic) conf    
121         select MMU                                
122                                                   
123 config XTENSA_VARIANT_DC232B                      
124         bool "dc232b - Diamond 232L Standard C    
125         select MMU                                
126         select HAVE_XTENSA_GPIO32                 
127         help                                      
128           This variant refers to Tensilica's D    
129                                                   
130 config XTENSA_VARIANT_DC233C                      
131         bool "dc233c - Diamond 233L Standard C    
132         select MMU                                
133         select HAVE_XTENSA_GPIO32                 
134         help                                      
135           This variant refers to Tensilica's D    
136                                                   
137 config XTENSA_VARIANT_CUSTOM                      
138         bool "Custom Xtensa processor configur    
139         select HAVE_XTENSA_GPIO32                 
140         help                                      
141           Select this variant to use a custom     
142           You will be prompted for a processor    
143 endchoice                                         
144                                                   
145 config XTENSA_VARIANT_CUSTOM_NAME                 
146         string "Xtensa Processor Custom Core V    
147         depends on XTENSA_VARIANT_CUSTOM          
148         help                                      
149           Provide the name of a custom Xtensa     
150           This CORENAME selects arch/xtensa/va    
151           Don't forget you have to select MMU     
152                                                   
153 config XTENSA_VARIANT_NAME                        
154         string                                    
155         default "dc232b"                          
156         default "dc233c"                          
157         default "fsf"                             
158         default XTENSA_VARIANT_CUSTOM_NAME        
159                                                   
160 config XTENSA_VARIANT_MMU                         
161         bool "Core variant has a Full MMU (TLB    
162         depends on XTENSA_VARIANT_CUSTOM          
163         default y                                 
164         select MMU                                
165         help                                      
166           Build a Conventional Kernel with ful    
167           ie: it supports a TLB with auto-load    
168                                                   
169 config XTENSA_VARIANT_HAVE_PERF_EVENTS            
170         bool "Core variant has Performance Mon    
171         depends on XTENSA_VARIANT_CUSTOM          
172         default n                                 
173         help                                      
174           Enable if core variant has Performan    
175           External Registers Interface.           
176                                                   
177           If unsure, say N.                       
178                                                   
179 config XTENSA_FAKE_NMI                            
180         bool "Treat PMM IRQ as NMI"               
181         depends on XTENSA_VARIANT_HAVE_PERF_EV    
182         default n                                 
183         help                                      
184           If PMM IRQ is the only IRQ at EXCM l    
185           treat it as NMI, which improves accu    
186                                                   
187           If there are other interrupts at or     
188           but not above the EXCM level, PMM IR    
189           but only if these IRQs are not used.    
190           saying that this is not safe, and a     
191           actually fire.                          
192                                                   
193           If unsure, say N.                       
194                                                   
195 config PFAULT                                     
196         bool "Handle protection faults" if EXP    
197         default y                                 
198         help                                      
199           Handle protection faults. MMU config    
200           noMMU configurations may disable it     
201           generates protection faults or fault    
202                                                   
203           If unsure, say Y.                       
204                                                   
205 config XTENSA_UNALIGNED_USER                      
206         bool "Unaligned memory access in user     
207         help                                      
208           The Xtensa architecture currently do    
209           memory accesses in hardware but thro    
210           Per default, unaligned memory access    
211                                                   
212           Say Y here to enable unaligned memor    
213                                                   
214 config XTENSA_LOAD_STORE                          
215         bool "Load/store exception handler for    
216         help                                      
217           The Xtensa architecture only allows     
218           instruction bus with l32r and l32i i    
219           instructions raise an exception with    
220           This makes it hard to use some confi    
221           literals in FLASH memory attached to    
222                                                   
223           Say Y here to enable exception handl    
224           byte and 2-byte access to memory att    
225                                                   
226 config HAVE_SMP                                   
227         bool "System Supports SMP (MX)"           
228         depends on XTENSA_VARIANT_CUSTOM          
229         select XTENSA_MX                          
230         help                                      
231           This option is used to indicate that    
232           supports Multiprocessing. Multiproce    
233           the CPU core definition and currentl    
234                                                   
235           Multiprocessor support is implemente    
236           interrupt controllers.                  
237                                                   
238           The MX interrupt distributer adds In    
239           and causes the IRQ numbers to be inc    
240           like the open cores ethernet driver     
241                                                   
242           You still have to select "Enable SMP    
243                                                   
244 config SMP                                        
245         bool "Enable Symmetric multi-processin    
246         depends on HAVE_SMP                       
247         select GENERIC_SMP_IDLE_THREAD            
248         help                                      
249           Enabled SMP Software; allows more th    
250           to be activated during startup.         
251                                                   
252 config NR_CPUS                                    
253         depends on SMP                            
254         int "Maximum number of CPUs (2-32)"       
255         range 2 32                                
256         default "4"                               
257                                                   
258 config HOTPLUG_CPU                                
259         bool "Enable CPU hotplug support"         
260         depends on SMP                            
261         help                                      
262           Say Y here to allow turning CPUs off    
263           controlled through /sys/devices/syst    
264                                                   
265           Say N if you want to disable CPU hot    
266                                                   
267 config SECONDARY_RESET_VECTOR                     
268         bool "Secondary cores use alternative     
269         default y                                 
270         depends on HAVE_SMP                       
271         help                                      
272           Secondary cores may be configured to    
273           or all cores may use primary reset v    
274           Say Y here to supply handler for the    
275                                                   
276 config FAST_SYSCALL_XTENSA                        
277         bool "Enable fast atomic syscalls"        
278         default n                                 
279         help                                      
280           fast_syscall_xtensa is a syscall tha    
281           on UP kernel when processor has no s    
282                                                   
283           This syscall is deprecated. It may h    
284           invalid arguments. It is provided on    
285           Only enable it if your userspace sof    
286                                                   
287           If unsure, say N.                       
288                                                   
289 config FAST_SYSCALL_SPILL_REGISTERS               
290         bool "Enable spill registers syscall"     
291         default n                                 
292         help                                      
293           fast_syscall_spill_registers is a sy    
294           register windows of a calling usersp    
295                                                   
296           This syscall is deprecated. It may h    
297           invalid arguments. It is provided on    
298           Only enable it if your userspace sof    
299                                                   
300           If unsure, say N.                       
301                                                   
302 choice                                            
303         prompt "Kernel ABI"                       
304         default KERNEL_ABI_DEFAULT                
305         help                                      
306           Select ABI for the kernel code. This    
307           supported userspace ABI and any comb    
308           kernel/userspace ABI is possible and    
309                                                   
310           In case both kernel and userspace su    
311           all register windows support code wi    
312           build.                                  
313                                                   
314           If unsure, choose the default ABI.      
315                                                   
316 config KERNEL_ABI_DEFAULT                         
317         bool "Default ABI"                        
318         help                                      
319           Select this option to compile kernel    
320           selected for the toolchain.             
321           Normally cores with windowed registe    
322           cores without it use call0 ABI.         
323                                                   
324 config KERNEL_ABI_CALL0                           
325         bool "Call0 ABI" if CC_HAVE_CALL0_ABI     
326         help                                      
327           Select this option to compile kernel    
328           toolchain that defaults to windowed     
329           When this option is not selected the    
330           be used for the kernel code.            
331                                                   
332 endchoice                                         
333                                                   
334 config USER_ABI_CALL0                             
335         bool                                      
336                                                   
337 choice                                            
338         prompt "Userspace ABI"                    
339         default USER_ABI_DEFAULT                  
340         help                                      
341           Select supported userspace ABI.         
342                                                   
343           If unsure, choose the default ABI.      
344                                                   
345 config USER_ABI_DEFAULT                           
346         bool "Default ABI only"                   
347         help                                      
348           Assume default userspace ABI. For XE    
349           call0 ABI binaries may be run on suc    
350           will not work correctly for them.       
351                                                   
352 config USER_ABI_CALL0_ONLY                        
353         bool "Call0 ABI only"                     
354         select USER_ABI_CALL0                     
355         help                                      
356           Select this option to support only c    
357           Windowed ABI binaries will crash wit    
358           an illegal instruction exception on     
359                                                   
360           Choose this option if you're plannin    
361           built with call0 ABI.                   
362                                                   
363 config USER_ABI_CALL0_PROBE                       
364         bool "Support both windowed and call0     
365         select USER_ABI_CALL0                     
366         help                                      
367           Select this option to support both w    
368           ABIs. When enabled all processes are    
369           and a fast user exception handler fo    
370           used to turn on PS.WOE bit on the fi    
371           the userspace.                          
372                                                   
373           This option should be enabled for th    
374           both call0 and windowed ABIs in user    
375                                                   
376           Note that Xtensa ISA does not guaran    
377           raise an illegal instruction excepti    
378           PS.WOE is disabled, check whether th    
379                                                   
380 endchoice                                         
381                                                   
382 endmenu                                           
383                                                   
384 config XTENSA_CALIBRATE_CCOUNT                    
385         def_bool n                                
386         help                                      
387           On some platforms (XT2000, for examp    
388           vary.  The frequency can be determin    
389           against a well known, fixed frequenc    
390                                                   
391 config SERIAL_CONSOLE                             
392         def_bool n                                
393                                                   
394 config PLATFORM_HAVE_XIP                          
395         def_bool n                                
396                                                   
397 menu "Platform options"                           
398                                                   
399 choice                                            
400         prompt "Xtensa System Type"               
401         default XTENSA_PLATFORM_ISS               
402                                                   
403 config XTENSA_PLATFORM_ISS                        
404         bool "ISS"                                
405         select XTENSA_CALIBRATE_CCOUNT            
406         select SERIAL_CONSOLE                     
407         help                                      
408           ISS is an acronym for Tensilica's In    
409                                                   
410 config XTENSA_PLATFORM_XT2000                     
411         bool "XT2000"                             
412         help                                      
413           XT2000 is the name of Tensilica's fe    
414           This hardware is capable of running     
415                                                   
416 config XTENSA_PLATFORM_XTFPGA                     
417         bool "XTFPGA"                             
418         select ETHOC if ETHERNET                  
419         select PLATFORM_WANT_DEFAULT_MEM if !M    
420         select SERIAL_CONSOLE                     
421         select XTENSA_CALIBRATE_CCOUNT            
422         select PLATFORM_HAVE_XIP                  
423         help                                      
424           XTFPGA is the name of Tensilica boar    
425           This hardware is capable of running     
426                                                   
427 endchoice                                         
428                                                   
429 config PLATFORM_NR_IRQS                           
430         int                                       
431         default 3 if XTENSA_PLATFORM_XT2000       
432         default 0                                 
433                                                   
434 config XTENSA_CPU_CLOCK                           
435         int "CPU clock rate [MHz]"                
436         depends on !XTENSA_CALIBRATE_CCOUNT       
437         default 16                                
438                                                   
439 config GENERIC_CALIBRATE_DELAY                    
440         bool "Auto calibration of the BogoMIPS    
441         help                                      
442           The BogoMIPS value can easily be der    
443                                                   
444 config CMDLINE_BOOL                               
445         bool "Default bootloader kernel argume    
446                                                   
447 config CMDLINE                                    
448         string "Initial kernel command string"    
449         depends on CMDLINE_BOOL                   
450         default "console=ttyS0,38400 root=/dev    
451         help                                      
452           On some architectures (EBSA110 and C    
453           for the boot loader to pass argument    
454           architectures, you should supply som    
455           time by entering them here. As a min    
456           memory size and the root device (e.g    
457                                                   
458 config USE_OF                                     
459         bool "Flattened Device Tree support"      
460         select OF                                 
461         select OF_EARLY_FLATTREE                  
462         help                                      
463           Include support for flattened device    
464                                                   
465 config BUILTIN_DTB_SOURCE                         
466         string "DTB to build into the kernel i    
467         depends on OF                             
468                                                   
469 config PARSE_BOOTPARAM                            
470         bool "Parse bootparam block"              
471         default y                                 
472         help                                      
473           Parse parameters passed to the kerne    
474           be disabled if the kernel is known t    
475                                                   
476           If unsure, say Y.                       
477                                                   
478 choice                                            
479         prompt "Semihosting interface"            
480         default XTENSA_SIMCALL_ISS                
481         depends on XTENSA_PLATFORM_ISS            
482         help                                      
483           Choose semihosting interface that wi    
484           block device and networking.            
485                                                   
486 config XTENSA_SIMCALL_ISS                         
487         bool "simcall"                            
488         help                                      
489           Use simcall instruction. simcall is     
490           it does nothing on hardware.            
491                                                   
492 config XTENSA_SIMCALL_GDBIO                       
493         bool "GDBIO"                              
494         help                                      
495           Use break instruction. It is availab    
496           is attached to it via JTAG.             
497                                                   
498 endchoice                                         
499                                                   
500 config BLK_DEV_SIMDISK                            
501         tristate "Host file-based simulated bl    
502         default n                                 
503         depends on XTENSA_PLATFORM_ISS && BLOC    
504         help                                      
505           Create block devices that map to fil    
506           Device binding to host file may be c    
507           interface provided the device is not    
508                                                   
509 config BLK_DEV_SIMDISK_COUNT                      
510         int "Number of host file-based simulat    
511         range 1 10                                
512         depends on BLK_DEV_SIMDISK                
513         default 2                                 
514         help                                      
515           This is the default minimal number o    
516           Kernel/module parameter 'simdisk_cou    
517           value at runtime. More file names (b    
518           specified as parameters, simdisk_cou    
519                                                   
520 config SIMDISK0_FILENAME                          
521         string "Host filename for the first si    
522         depends on BLK_DEV_SIMDISK = y            
523         default ""                                
524         help                                      
525           Attach a first simdisk to a host fil    
526           contains a root file system.            
527                                                   
528 config SIMDISK1_FILENAME                          
529         string "Host filename for the second s    
530         depends on BLK_DEV_SIMDISK = y && BLK_    
531         default ""                                
532         help                                      
533           Another simulated disk in a host fil    
534           storage.                                
535                                                   
536 config XTFPGA_LCD                                 
537         bool "Enable XTFPGA LCD driver"           
538         depends on XTENSA_PLATFORM_XTFPGA         
539         default n                                 
540         help                                      
541           There's a 2x16 LCD on most of XTFPGA    
542           progress messages there during bootu    
543           during board bringup.                   
544                                                   
545           If unsure, say N.                       
546                                                   
547 config XTFPGA_LCD_BASE_ADDR                       
548         hex "XTFPGA LCD base address"             
549         depends on XTFPGA_LCD                     
550         default "0x0d0c0000"                      
551         help                                      
552           Base address of the LCD controller i    
553           Different boards from XTFPGA family     
554           addresses. Please consult prototypin    
555           the correct address. Wrong address h    
556                                                   
557 config XTFPGA_LCD_8BIT_ACCESS                     
558         bool "Use 8-bit access to XTFPGA LCD"     
559         depends on XTFPGA_LCD                     
560         default n                                 
561         help                                      
562           LCD may be connected with 4- or 8-bi    
563           only be used with 8-bit interface. P    
564           guide for your board for the correct    
565                                                   
566 comment "Kernel memory layout"                    
567                                                   
568 config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX       
569         bool "Initialize Xtensa MMU inside the    
570         depends on !XTENSA_VARIANT_FSF && !XTE    
571         default y if XTENSA_VARIANT_DC233C ||     
572         help                                      
573           Earlier version initialized the MMU     
574           before jumping to _startup in head.S    
575           it was possible to place a software     
576           then enter your normal kernel breakp    
577           to the kernel mappings (0XC0000000).    
578                                                   
579           This unfortunately won't work for U-    
580           work for using KEXEC to have a hot k    
581           KDUMP.                                  
582                                                   
583           So now the MMU is initialized in hea    
584           use hardware breakpoints (gdb 'hbrea    
585           xt-gdb can't place a Software Breakp    
586           to mapping the MMU and after mapping    
587           was mapped gdb wouldn't remove the b    
588           PC wouldn't match. Since Hardware Br    
589           Linux configurations it seems reason    
590           and leave this older mechanism for u    
591           not to follow Tensilica's recommenda    
592                                                   
593           Selecting this will cause U-Boot to     
594           address at 0x00003000 instead of the    
595                                                   
596           If in doubt, say Y.                     
597                                                   
598 config XIP_KERNEL                                 
599         bool "Kernel Execute-In-Place from ROM    
600         depends on PLATFORM_HAVE_XIP              
601         help                                      
602           Execute-In-Place allows the kernel t    
603           directly addressable by the CPU, suc    
604           space since the text section of the     
605           to RAM. Read-write sections, such as    
606           are still copied to RAM. The XIP ker    
607           it has to run directly from flash, s    
608           store it. The flash address used to     
609           and for storing it, is configuration    
610           say Y here, you must know the proper    
611           store the kernel image depending on     
612                                                   
613           Also note that the make target becom    
614           "make Image" or "make uImage". The f    
615           ROM memory will be arch/xtensa/boot/    
616                                                   
617           If unsure, say N.                       
618                                                   
619 config MEMMAP_CACHEATTR                           
620         hex "Cache attributes for the memory a    
621         depends on !MMU                           
622         default 0x22222222                        
623         help                                      
624           These cache attributes are set up fo    
625           specifies cache attributes for the c    
626           region: bits 0..3 -- for addresses 0    
627           bits 4..7 -- for addresses 0x2000000    
628                                                   
629           Cache attribute values are specific     
630           For region protection MMUs:             
631             1: WT cached,                         
632             2: cache bypass,                      
633             4: WB cached,                         
634             f: illegal.                           
635           For full MMU:                           
636             bit 0: executable,                    
637             bit 1: writable,                      
638             bits 2..3:                            
639               0: cache bypass,                    
640               1: WB cache,                        
641               2: WT cache,                        
642               3: special (c and e are illegal,    
643           For MPU:                                
644             0: illegal,                           
645             1: WB cache,                          
646             2: WB, no-write-allocate cache,       
647             3: WT cache,                          
648             4: cache bypass.                      
649                                                   
650 config KSEG_PADDR                                 
651         hex "Physical address of the KSEG mapp    
652         depends on INITIALIZE_XTENSA_MMU_INSID    
653         default 0x00000000                        
654         help                                      
655           This is the physical address where K    
656           the chosen KSEG layout help for the     
657           Unpacked kernel image (including vec    
658           within KSEG.                            
659           Physical memory below this address i    
660                                                   
661           If unsure, leave the default value h    
662                                                   
663 config KERNEL_VIRTUAL_ADDRESS                     
664         hex "Kernel virtual address"              
665         depends on MMU && XIP_KERNEL              
666         default 0xd0003000                        
667         help                                      
668           This is the virtual address where th    
669           XIP kernel may be mapped into KSEG o    
670           provided here must match kernel load    
671           KERNEL_LOAD_ADDRESS.                    
672                                                   
673 config KERNEL_LOAD_ADDRESS                        
674         hex "Kernel load address"                 
675         default 0x60003000 if !MMU                
676         default 0x00003000 if MMU && INITIALIZ    
677         default 0xd0003000 if MMU && !INITIALI    
678         help                                      
679           This is the address where the kernel    
680           It is virtual address for MMUv2 conf    
681           for all other configurations.           
682                                                   
683           If unsure, leave the default value h    
684                                                   
685 choice                                            
686         prompt "Relocatable vectors location"     
687         default XTENSA_VECTORS_IN_TEXT            
688         help                                      
689           Choose whether relocatable vectors a    
690           or placed separately at runtime. Thi    
691           configurations without VECBASE regis    
692           placed at their hardware-defined loc    
693                                                   
694 config XTENSA_VECTORS_IN_TEXT                     
695         bool "Merge relocatable vectors into k    
696         depends on !MTD_XIP                       
697         help                                      
698           This option puts relocatable vectors    
699           with proper alignment.                  
700           This is a safe choice for most confi    
701                                                   
702 config XTENSA_VECTORS_SEPARATE                    
703         bool "Put relocatable vectors at fixed    
704         help                                      
705           This option puts relocatable vectors    
706           Vectors are merged with the .init da    
707           are copied into their designated loc    
708           Use it to put vectors into IRAM or o    
709           XIP-aware MTD support.                  
710                                                   
711 endchoice                                         
712                                                   
713 config VECTORS_ADDR                               
714         hex "Kernel vectors virtual address"      
715         default 0x00000000                        
716         depends on XTENSA_VECTORS_SEPARATE        
717         help                                      
718           This is the virtual address of the (    
719           It must be within KSEG if MMU is use    
720                                                   
721 config XIP_DATA_ADDR                              
722         hex "XIP kernel data virtual address"     
723         depends on XIP_KERNEL                     
724         default 0x00000000                        
725         help                                      
726           This is the virtual address where XI    
727           It must be within KSEG if MMU is use    
728                                                   
729 config PLATFORM_WANT_DEFAULT_MEM                  
730         def_bool n                                
731                                                   
732 config DEFAULT_MEM_START                          
733         hex                                       
734         prompt "PAGE_OFFSET/PHYS_OFFSET" if !M    
735         default 0x60000000 if PLATFORM_WANT_DE    
736         default 0x00000000                        
737         help                                      
738           This is the base address used for bo    
739           in noMMU configurations.                
740                                                   
741           If unsure, leave the default value h    
742                                                   
743 choice                                            
744         prompt "KSEG layout"                      
745         depends on MMU                            
746         default XTENSA_KSEG_MMU_V2                
747                                                   
748 config XTENSA_KSEG_MMU_V2                         
749         bool "MMUv2: 128MB cached + 128MB unca    
750         help                                      
751           MMUv2 compatible kernel memory map:     
752           at KSEG_PADDR to 0xd0000000 with cac    
753           without cache.                          
754           KSEG_PADDR must be aligned to 128MB.    
755                                                   
756 config XTENSA_KSEG_256M                           
757         bool "256MB cached + 256MB uncached"      
758         depends on INITIALIZE_XTENSA_MMU_INSID    
759         help                                      
760           TLB way 6 maps 256MB starting at KSE    
761           with cache and to 0xc0000000 without    
762           KSEG_PADDR must be aligned to 256MB.    
763                                                   
764 config XTENSA_KSEG_512M                           
765         bool "512MB cached + 512MB uncached"      
766         depends on INITIALIZE_XTENSA_MMU_INSID    
767         help                                      
768           TLB way 6 maps 512MB starting at KSE    
769           with cache and to 0xc0000000 without    
770           KSEG_PADDR must be aligned to 256MB.    
771                                                   
772 endchoice                                         
773                                                   
774 config HIGHMEM                                    
775         bool "High Memory Support"                
776         depends on MMU                            
777         select KMAP_LOCAL                         
778         help                                      
779           Linux can use the full amount of RAM    
780           default. However, the default MMUv2     
781           lowermost 128 MB of memory linearly     
782           at 0xd0000000 (cached) and 0xd800000    
783           When there are more than 128 MB memo    
784           all of it can be "permanently mapped    
785           The physical memory that's not perma    
786           "high memory".                          
787                                                   
788           If you are compiling a kernel which     
789           machine with more than 128 MB total     
790           N here.                                 
791                                                   
792           If unsure, say Y.                       
793                                                   
794 config ARCH_FORCE_MAX_ORDER                       
795         int "Order of maximal physically conti    
796         default "10"                              
797         help                                      
798           The kernel page allocator limits the    
799           contiguous allocations. The limit is    
800           defines the maximal power of two of     
801           allocated as a single contiguous blo    
802           overriding the default setting when     
803           large blocks of physically contiguou    
804                                                   
805           Don't change if unsure.                 
806                                                   
807 endmenu                                           
808                                                   
809 menu "Power management options"                   
810                                                   
811 config ARCH_HIBERNATION_POSSIBLE                  
812         def_bool y                                
813                                                   
814 source "kernel/power/Kconfig"                     
815                                                   
816 endmenu                                           
                                                      

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