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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/arch/xtensa/Kconfig
....@@ -1,26 +1,31 @@
11 # SPDX-License-Identifier: GPL-2.0
2
-config ZONE_DMA
3
-	def_bool y
4
-
52 config XTENSA
63 	def_bool y
7
-	select ARCH_HAS_SG_CHAIN
8
-	select ARCH_HAS_SYNC_DMA_FOR_CPU
9
-	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
10
-	select ARCH_NO_COHERENT_DMA_MMAP if !MMU
4
+	select ARCH_32BIT_OFF_T
5
+	select ARCH_HAS_BINFMT_FLAT if !MMU
6
+	select ARCH_HAS_DMA_PREP_COHERENT if MMU
7
+	select ARCH_HAS_SYNC_DMA_FOR_CPU if MMU
8
+	select ARCH_HAS_SYNC_DMA_FOR_DEVICE if MMU
9
+	select ARCH_HAS_DMA_SET_UNCACHED if MMU
10
+	select ARCH_USE_QUEUED_RWLOCKS
11
+	select ARCH_USE_QUEUED_SPINLOCKS
1112 	select ARCH_WANT_FRAME_POINTERS
1213 	select ARCH_WANT_IPC_PARSE_VERSION
13
-	select BUILDTIME_EXTABLE_SORT
14
+	select BUILDTIME_TABLE_SORT
1415 	select CLONE_BACKWARDS
1516 	select COMMON_CLK
16
-	select DMA_NONCOHERENT_OPS
17
+	select DMA_REMAP if MMU
1718 	select GENERIC_ATOMIC64
1819 	select GENERIC_CLOCKEVENTS
1920 	select GENERIC_IRQ_SHOW
2021 	select GENERIC_PCI_IOMAP
2122 	select GENERIC_SCHED_CLOCK
2223 	select GENERIC_STRNCPY_FROM_USER if KASAN
23
-	select HAVE_ARCH_KASAN if MMU
24
+	select HAVE_ARCH_AUDITSYSCALL
25
+	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
26
+	select HAVE_ARCH_KASAN if MMU && !XIP_KERNEL
27
+	select HAVE_ARCH_SECCOMP_FILTER
28
+	select HAVE_ARCH_TRACEHOOK
2429 	select HAVE_DEBUG_KMEMLEAK
2530 	select HAVE_DMA_CONTIGUOUS
2631 	select HAVE_EXIT_THREAD
....@@ -28,14 +33,15 @@
2833 	select HAVE_FUTEX_CMPXCHG if !MMU && FUTEX
2934 	select HAVE_HW_BREAKPOINT if PERF_EVENTS
3035 	select HAVE_IRQ_TIME_ACCOUNTING
31
-	select HAVE_MEMBLOCK
3236 	select HAVE_OPROFILE
37
+	select HAVE_PCI
3338 	select HAVE_PERF_EVENTS
3439 	select HAVE_STACKPROTECTOR
40
+	select HAVE_SYSCALL_TRACEPOINTS
3541 	select IRQ_DOMAIN
3642 	select MODULES_USE_ELF_RELA
37
-	select NO_BOOTMEM
3843 	select PERF_USE_VMALLOC
44
+	select SET_FS
3945 	select VIRT_TO_BUS
4046 	help
4147 	  Xtensa processors are 32-bit RISC machines designed by Tensilica
....@@ -44,9 +50,6 @@
4450 	  architecture supports all processor configurations and extensions,
4551 	  with reasonable minimum requirements.  The Xtensa Linux project has
4652 	  a home page at <http://www.linux-xtensa.org/>.
47
-
48
-config RWSEM_XCHGADD_ALGORITHM
49
-	def_bool y
5053 
5154 config GENERIC_HWEIGHT
5255 	def_bool y
....@@ -121,7 +124,7 @@
121124 	help
122125 	  Provide the name of a custom Xtensa processor variant.
123126 	  This CORENAME selects arch/xtensa/variant/CORENAME.
124
-	  Dont forget you have to select MMU if you have one.
127
+	  Don't forget you have to select MMU if you have one.
125128 
126129 config XTENSA_VARIANT_NAME
127130 	string
....@@ -166,7 +169,7 @@
166169 	  If unsure, say N.
167170 
168171 config XTENSA_UNALIGNED_USER
169
-	bool "Unaligned memory access in use space"
172
+	bool "Unaligned memory access in user space"
170173 	help
171174 	  The Xtensa architecture currently does not handle unaligned
172175 	  memory accesses in hardware but through an exception handler.
....@@ -179,11 +182,11 @@
179182 	depends on XTENSA_VARIANT_CUSTOM
180183 	select XTENSA_MX
181184 	help
182
-	  This option is use to indicate that the system-on-a-chip (SOC)
185
+	  This option is used to indicate that the system-on-a-chip (SOC)
183186 	  supports Multiprocessing. Multiprocessor support implemented above
184187 	  the CPU core definition and currently needs to be selected manually.
185188 
186
-	  Multiprocessor support in implemented with external cache and
189
+	  Multiprocessor support is implemented with external cache and
187190 	  interrupt controllers.
188191 
189192 	  The MX interrupt distributer adds Interprocessor Interrupts
....@@ -215,6 +218,245 @@
215218 
216219 	  Say N if you want to disable CPU hotplug.
217220 
221
+config FAST_SYSCALL_XTENSA
222
+	bool "Enable fast atomic syscalls"
223
+	default n
224
+	help
225
+	  fast_syscall_xtensa is a syscall that can make atomic operations
226
+	  on UP kernel when processor has no s32c1i support.
227
+
228
+	  This syscall is deprecated. It may have issues when called with
229
+	  invalid arguments. It is provided only for backwards compatibility.
230
+	  Only enable it if your userspace software requires it.
231
+
232
+	  If unsure, say N.
233
+
234
+config FAST_SYSCALL_SPILL_REGISTERS
235
+	bool "Enable spill registers syscall"
236
+	default n
237
+	help
238
+	  fast_syscall_spill_registers is a syscall that spills all active
239
+	  register windows of a calling userspace task onto its stack.
240
+
241
+	  This syscall is deprecated. It may have issues when called with
242
+	  invalid arguments. It is provided only for backwards compatibility.
243
+	  Only enable it if your userspace software requires it.
244
+
245
+	  If unsure, say N.
246
+
247
+config USER_ABI_CALL0
248
+	bool
249
+
250
+choice
251
+	prompt "Userspace ABI"
252
+	default USER_ABI_DEFAULT
253
+	help
254
+	  Select supported userspace ABI.
255
+
256
+	  If unsure, choose the default ABI.
257
+
258
+config USER_ABI_DEFAULT
259
+	bool "Default ABI only"
260
+	help
261
+	  Assume default userspace ABI. For XEA2 cores it is windowed ABI.
262
+	  call0 ABI binaries may be run on such kernel, but signal delivery
263
+	  will not work correctly for them.
264
+
265
+config USER_ABI_CALL0_ONLY
266
+	bool "Call0 ABI only"
267
+	select USER_ABI_CALL0
268
+	help
269
+	  Select this option to support only call0 ABI in userspace.
270
+	  Windowed ABI binaries will crash with a segfault caused by
271
+	  an illegal instruction exception on the first 'entry' opcode.
272
+
273
+	  Choose this option if you're planning to run only user code
274
+	  built with call0 ABI.
275
+
276
+config USER_ABI_CALL0_PROBE
277
+	bool "Support both windowed and call0 ABI by probing"
278
+	select USER_ABI_CALL0
279
+	help
280
+	  Select this option to support both windowed and call0 userspace
281
+	  ABIs. When enabled all processes are started with PS.WOE disabled
282
+	  and a fast user exception handler for an illegal instruction is
283
+	  used to turn on PS.WOE bit on the first 'entry' opcode executed by
284
+	  the userspace.
285
+
286
+	  This option should be enabled for the kernel that must support
287
+	  both call0 and windowed ABIs in userspace at the same time.
288
+
289
+	  Note that Xtensa ISA does not guarantee that entry opcode will
290
+	  raise an illegal instruction exception on cores with XEA2 when
291
+	  PS.WOE is disabled, check whether the target core supports it.
292
+
293
+endchoice
294
+
295
+endmenu
296
+
297
+config XTENSA_CALIBRATE_CCOUNT
298
+	def_bool n
299
+	help
300
+	  On some platforms (XT2000, for example), the CPU clock rate can
301
+	  vary.  The frequency can be determined, however, by measuring
302
+	  against a well known, fixed frequency, such as an UART oscillator.
303
+
304
+config SERIAL_CONSOLE
305
+	def_bool n
306
+
307
+config PLATFORM_HAVE_XIP
308
+	def_bool n
309
+
310
+menu "Platform options"
311
+
312
+choice
313
+	prompt "Xtensa System Type"
314
+	default XTENSA_PLATFORM_ISS
315
+
316
+config XTENSA_PLATFORM_ISS
317
+	bool "ISS"
318
+	select XTENSA_CALIBRATE_CCOUNT
319
+	select SERIAL_CONSOLE
320
+	help
321
+	  ISS is an acronym for Tensilica's Instruction Set Simulator.
322
+
323
+config XTENSA_PLATFORM_XT2000
324
+	bool "XT2000"
325
+	select HAVE_IDE
326
+	help
327
+	  XT2000 is the name of Tensilica's feature-rich emulation platform.
328
+	  This hardware is capable of running a full Linux distribution.
329
+
330
+config XTENSA_PLATFORM_XTFPGA
331
+	bool "XTFPGA"
332
+	select ETHOC if ETHERNET
333
+	select PLATFORM_WANT_DEFAULT_MEM if !MMU
334
+	select SERIAL_CONSOLE
335
+	select XTENSA_CALIBRATE_CCOUNT
336
+	select PLATFORM_HAVE_XIP
337
+	help
338
+	  XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605).
339
+	  This hardware is capable of running a full Linux distribution.
340
+
341
+endchoice
342
+
343
+config PLATFORM_NR_IRQS
344
+	int
345
+	default 3 if XTENSA_PLATFORM_XT2000
346
+	default 0
347
+
348
+config XTENSA_CPU_CLOCK
349
+	int "CPU clock rate [MHz]"
350
+	depends on !XTENSA_CALIBRATE_CCOUNT
351
+	default 16
352
+
353
+config GENERIC_CALIBRATE_DELAY
354
+	bool "Auto calibration of the BogoMIPS value"
355
+	help
356
+	  The BogoMIPS value can easily be derived from the CPU frequency.
357
+
358
+config CMDLINE_BOOL
359
+	bool "Default bootloader kernel arguments"
360
+
361
+config CMDLINE
362
+	string "Initial kernel command string"
363
+	depends on CMDLINE_BOOL
364
+	default "console=ttyS0,38400 root=/dev/ram"
365
+	help
366
+	  On some architectures (EBSA110 and CATS), there is currently no way
367
+	  for the boot loader to pass arguments to the kernel. For these
368
+	  architectures, you should supply some command-line options at build
369
+	  time by entering them here. As a minimum, you should specify the
370
+	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
371
+
372
+config USE_OF
373
+	bool "Flattened Device Tree support"
374
+	select OF
375
+	select OF_EARLY_FLATTREE
376
+	help
377
+	  Include support for flattened device tree machine descriptions.
378
+
379
+config BUILTIN_DTB_SOURCE
380
+	string "DTB to build into the kernel image"
381
+	depends on OF
382
+
383
+config PARSE_BOOTPARAM
384
+	bool "Parse bootparam block"
385
+	default y
386
+	help
387
+	  Parse parameters passed to the kernel from the bootloader. It may
388
+	  be disabled if the kernel is known to run without the bootloader.
389
+
390
+	  If unsure, say Y.
391
+
392
+config BLK_DEV_SIMDISK
393
+	tristate "Host file-based simulated block device support"
394
+	default n
395
+	depends on XTENSA_PLATFORM_ISS && BLOCK
396
+	help
397
+	  Create block devices that map to files in the host file system.
398
+	  Device binding to host file may be changed at runtime via proc
399
+	  interface provided the device is not in use.
400
+
401
+config BLK_DEV_SIMDISK_COUNT
402
+	int "Number of host file-based simulated block devices"
403
+	range 1 10
404
+	depends on BLK_DEV_SIMDISK
405
+	default 2
406
+	help
407
+	  This is the default minimal number of created block devices.
408
+	  Kernel/module parameter 'simdisk_count' may be used to change this
409
+	  value at runtime. More file names (but no more than 10) may be
410
+	  specified as parameters, simdisk_count grows accordingly.
411
+
412
+config SIMDISK0_FILENAME
413
+	string "Host filename for the first simulated device"
414
+	depends on BLK_DEV_SIMDISK = y
415
+	default ""
416
+	help
417
+	  Attach a first simdisk to a host file. Conventionally, this file
418
+	  contains a root file system.
419
+
420
+config SIMDISK1_FILENAME
421
+	string "Host filename for the second simulated device"
422
+	depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1
423
+	default ""
424
+	help
425
+	  Another simulated disk in a host file for a buildroot-independent
426
+	  storage.
427
+
428
+config XTFPGA_LCD
429
+	bool "Enable XTFPGA LCD driver"
430
+	depends on XTENSA_PLATFORM_XTFPGA
431
+	default n
432
+	help
433
+	  There's a 2x16 LCD on most of XTFPGA boards, kernel may output
434
+	  progress messages there during bootup/shutdown. It may be useful
435
+	  during board bringup.
436
+
437
+	  If unsure, say N.
438
+
439
+config XTFPGA_LCD_BASE_ADDR
440
+	hex "XTFPGA LCD base address"
441
+	depends on XTFPGA_LCD
442
+	default "0x0d0c0000"
443
+	help
444
+	  Base address of the LCD controller inside KIO region.
445
+	  Different boards from XTFPGA family have LCD controller at different
446
+	  addresses. Please consult prototyping user guide for your board for
447
+	  the correct address. Wrong address here may lead to hardware lockup.
448
+
449
+config XTFPGA_LCD_8BIT_ACCESS
450
+	bool "Use 8-bit access to XTFPGA LCD"
451
+	depends on XTFPGA_LCD
452
+	default n
453
+	help
454
+	  LCD may be connected with 4- or 8-bit interface, 8-bit access may
455
+	  only be used with 8-bit interface. Please consult prototyping user
456
+	  guide for your board for the correct interface width.
457
+
458
+comment "Kernel memory layout"
459
+
218460 config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
219461 	bool "Initialize Xtensa MMU inside the Linux kernel code"
220462 	depends on !XTENSA_VARIANT_FSF && !XTENSA_VARIANT_DC232B
....@@ -245,6 +487,27 @@
245487 
246488 	  If in doubt, say Y.
247489 
490
+config XIP_KERNEL
491
+	bool "Kernel Execute-In-Place from ROM"
492
+	depends on PLATFORM_HAVE_XIP
493
+	help
494
+	  Execute-In-Place allows the kernel to run from non-volatile storage
495
+	  directly addressable by the CPU, such as NOR flash. This saves RAM
496
+	  space since the text section of the kernel is not loaded from flash
497
+	  to RAM. Read-write sections, such as the data section and stack,
498
+	  are still copied to RAM. The XIP kernel is not compressed since
499
+	  it has to run directly from flash, so it will take more space to
500
+	  store it. The flash address used to link the kernel object files,
501
+	  and for storing it, is configuration dependent. Therefore, if you
502
+	  say Y here, you must know the proper physical address where to
503
+	  store the kernel image depending on your own flash memory usage.
504
+
505
+	  Also note that the make target becomes "make xipImage" rather than
506
+	  "make Image" or "make uImage". The final kernel binary to put in
507
+	  ROM memory will be arch/xtensa/boot/xipImage.
508
+
509
+	  If unsure, say N.
510
+
248511 config MEMMAP_CACHEATTR
249512 	hex "Cache attributes for the memory address space"
250513 	depends on !MMU
....@@ -255,12 +518,26 @@
255518 	  region: bits 0..3 -- for addresses 0x00000000..0x1fffffff,
256519 	  bits 4..7 -- for addresses 0x20000000..0x3fffffff, and so on.
257520 
258
-	  Cache attribute values are specific for the MMU type, so e.g.
259
-	  for region protection MMUs: 2 is cache bypass, 4 is WB cached,
260
-	  1 is WT cached, f is illegal. For ful MMU: bit 0 makes it executable,
261
-	  bit 1 makes it writable, bits 2..3 meaning is 0: cache bypass,
262
-	  1: WB cache, 2: WT cache, 3: special (c and e are illegal, f is
263
-	  reserved).
521
+	  Cache attribute values are specific for the MMU type.
522
+	  For region protection MMUs:
523
+	    1: WT cached,
524
+	    2: cache bypass,
525
+	    4: WB cached,
526
+	    f: illegal.
527
+	  For full MMU:
528
+	    bit 0: executable,
529
+	    bit 1: writable,
530
+	    bits 2..3:
531
+	      0: cache bypass,
532
+	      1: WB cache,
533
+	      2: WT cache,
534
+	      3: special (c and e are illegal, f is reserved).
535
+	  For MPU:
536
+	    0: illegal,
537
+	    1: WB cache,
538
+	    2: WB, no-write-allocate cache,
539
+	    3: WT cache,
540
+	    4: cache bypass.
264541 
265542 config KSEG_PADDR
266543 	hex "Physical address of the KSEG mapping"
....@@ -275,6 +552,16 @@
275552 
276553 	  If unsure, leave the default value here.
277554 
555
+config KERNEL_VIRTUAL_ADDRESS
556
+	hex "Kernel virtual address"
557
+	depends on MMU && XIP_KERNEL
558
+	default 0xd0003000
559
+	help
560
+	  This is the virtual address where the XIP kernel is mapped.
561
+	  XIP kernel may be mapped into KSEG or KIO region, virtual address
562
+	  provided here must match kernel load address provided in
563
+	  KERNEL_LOAD_ADDRESS.
564
+
278565 config KERNEL_LOAD_ADDRESS
279566 	hex "Kernel load address"
280567 	default 0x60003000 if !MMU
....@@ -287,12 +574,61 @@
287574 
288575 	  If unsure, leave the default value here.
289576 
290
-config VECTORS_OFFSET
291
-	hex "Kernel vectors offset"
292
-	default 0x00003000
577
+choice
578
+	prompt "Relocatable vectors location"
579
+	default XTENSA_VECTORS_IN_TEXT
293580 	help
294
-	  This is the offset of the kernel image from the relocatable vectors
295
-	  base.
581
+	  Choose whether relocatable vectors are merged into the kernel .text
582
+	  or placed separately at runtime. This option does not affect
583
+	  configurations without VECBASE register where vectors are always
584
+	  placed at their hardware-defined locations.
585
+
586
+config XTENSA_VECTORS_IN_TEXT
587
+	bool "Merge relocatable vectors into kernel text"
588
+	depends on !MTD_XIP
589
+	help
590
+	  This option puts relocatable vectors into the kernel .text section
591
+	  with proper alignment.
592
+	  This is a safe choice for most configurations.
593
+
594
+config XTENSA_VECTORS_SEPARATE
595
+	bool "Put relocatable vectors at fixed address"
596
+	help
597
+	  This option puts relocatable vectors at specific virtual address.
598
+	  Vectors are merged with the .init data in the kernel image and
599
+	  are copied into their designated location during kernel startup.
600
+	  Use it to put vectors into IRAM or out of FLASH on kernels with
601
+	  XIP-aware MTD support.
602
+
603
+endchoice
604
+
605
+config VECTORS_ADDR
606
+	hex "Kernel vectors virtual address"
607
+	default 0x00000000
608
+	depends on XTENSA_VECTORS_SEPARATE
609
+	help
610
+	  This is the virtual address of the (relocatable) vectors base.
611
+	  It must be within KSEG if MMU is used.
612
+
613
+config XIP_DATA_ADDR
614
+	hex "XIP kernel data virtual address"
615
+	depends on XIP_KERNEL
616
+	default 0x00000000
617
+	help
618
+	  This is the virtual address where XIP kernel data is copied.
619
+	  It must be within KSEG if MMU is used.
620
+
621
+config PLATFORM_WANT_DEFAULT_MEM
622
+	def_bool n
623
+
624
+config DEFAULT_MEM_START
625
+	hex
626
+	prompt "PAGE_OFFSET/PHYS_OFFSET" if !MMU && PLATFORM_WANT_DEFAULT_MEM
627
+	default 0x60000000 if PLATFORM_WANT_DEFAULT_MEM
628
+	default 0x00000000
629
+	help
630
+	  This is the base address used for both PAGE_OFFSET and PHYS_OFFSET
631
+	  in noMMU configurations.
296632 
297633 	  If unsure, leave the default value here.
298634 
....@@ -346,177 +682,6 @@
346682 
347683 	  If unsure, say Y.
348684 
349
-config FAST_SYSCALL_XTENSA
350
-	bool "Enable fast atomic syscalls"
351
-	default n
352
-	help
353
-	  fast_syscall_xtensa is a syscall that can make atomic operations
354
-	  on UP kernel when processor has no s32c1i support.
355
-
356
-	  This syscall is deprecated. It may have issues when called with
357
-	  invalid arguments. It is provided only for backwards compatibility.
358
-	  Only enable it if your userspace software requires it.
359
-
360
-	  If unsure, say N.
361
-
362
-config FAST_SYSCALL_SPILL_REGISTERS
363
-	bool "Enable spill registers syscall"
364
-	default n
365
-	help
366
-	  fast_syscall_spill_registers is a syscall that spills all active
367
-	  register windows of a calling userspace task onto its stack.
368
-
369
-	  This syscall is deprecated. It may have issues when called with
370
-	  invalid arguments. It is provided only for backwards compatibility.
371
-	  Only enable it if your userspace software requires it.
372
-
373
-	  If unsure, say N.
374
-
375
-endmenu
376
-
377
-config XTENSA_CALIBRATE_CCOUNT
378
-	def_bool n
379
-	help
380
-	  On some platforms (XT2000, for example), the CPU clock rate can
381
-	  vary.  The frequency can be determined, however, by measuring
382
-	  against a well known, fixed frequency, such as an UART oscillator.
383
-
384
-config SERIAL_CONSOLE
385
-	def_bool n
386
-
387
-menu "Bus options"
388
-
389
-config PCI
390
-	bool "PCI support"
391
-	default y
392
-	help
393
-	  Find out whether you have a PCI motherboard. PCI is the name of a
394
-	  bus system, i.e. the way the CPU talks to the other stuff inside
395
-	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
396
-	  VESA. If you have PCI, say Y, otherwise N.
397
-
398
-source "drivers/pci/Kconfig"
399
-
400
-endmenu
401
-
402
-menu "Platform options"
403
-
404
-choice
405
-	prompt "Xtensa System Type"
406
-	default XTENSA_PLATFORM_ISS
407
-
408
-config XTENSA_PLATFORM_ISS
409
-	bool "ISS"
410
-	select XTENSA_CALIBRATE_CCOUNT
411
-	select SERIAL_CONSOLE
412
-	help
413
-	  ISS is an acronym for Tensilica's Instruction Set Simulator.
414
-
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-config XTENSA_PLATFORM_XT2000
416
-	bool "XT2000"
417
-	select HAVE_IDE
418
-	help
419
-	  XT2000 is the name of Tensilica's feature-rich emulation platform.
420
-	  This hardware is capable of running a full Linux distribution.
421
-
422
-config XTENSA_PLATFORM_XTFPGA
423
-	bool "XTFPGA"
424
-	select ETHOC if ETHERNET
425
-	select PLATFORM_WANT_DEFAULT_MEM if !MMU
426
-	select SERIAL_CONSOLE
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-	select XTENSA_CALIBRATE_CCOUNT
428
-	help
429
-	  XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605).
430
-	  This hardware is capable of running a full Linux distribution.
431
-
432
-endchoice
433
-
434
-config PLATFORM_NR_IRQS
435
-	int
436
-	default 3 if XTENSA_PLATFORM_XT2000
437
-	default 0
438
-
439
-config XTENSA_CPU_CLOCK
440
-	int "CPU clock rate [MHz]"
441
-	depends on !XTENSA_CALIBRATE_CCOUNT
442
-	default 16
443
-
444
-config GENERIC_CALIBRATE_DELAY
445
-	bool "Auto calibration of the BogoMIPS value"
446
-	help
447
-	  The BogoMIPS value can easily be derived from the CPU frequency.
448
-
449
-config CMDLINE_BOOL
450
-	bool "Default bootloader kernel arguments"
451
-
452
-config CMDLINE
453
-	string "Initial kernel command string"
454
-	depends on CMDLINE_BOOL
455
-	default "console=ttyS0,38400 root=/dev/ram"
456
-	help
457
-	  On some architectures (EBSA110 and CATS), there is currently no way
458
-	  for the boot loader to pass arguments to the kernel. For these
459
-	  architectures, you should supply some command-line options at build
460
-	  time by entering them here. As a minimum, you should specify the
461
-	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
462
-
463
-config USE_OF
464
-	bool "Flattened Device Tree support"
465
-	select OF
466
-	select OF_EARLY_FLATTREE
467
-	select OF_RESERVED_MEM
468
-	help
469
-	  Include support for flattened device tree machine descriptions.
470
-
471
-config BUILTIN_DTB
472
-	string "DTB to build into the kernel image"
473
-	depends on OF
474
-
475
-config PARSE_BOOTPARAM
476
-	bool "Parse bootparam block"
477
-	default y
478
-	help
479
-	  Parse parameters passed to the kernel from the bootloader. It may
480
-	  be disabled if the kernel is known to run without the bootloader.
481
-
482
-	  If unsure, say Y.
483
-
484
-config BLK_DEV_SIMDISK
485
-	tristate "Host file-based simulated block device support"
486
-	default n
487
-	depends on XTENSA_PLATFORM_ISS && BLOCK
488
-	help
489
-	  Create block devices that map to files in the host file system.
490
-	  Device binding to host file may be changed at runtime via proc
491
-	  interface provided the device is not in use.
492
-
493
-config BLK_DEV_SIMDISK_COUNT
494
-	int "Number of host file-based simulated block devices"
495
-	range 1 10
496
-	depends on BLK_DEV_SIMDISK
497
-	default 2
498
-	help
499
-	  This is the default minimal number of created block devices.
500
-	  Kernel/module parameter 'simdisk_count' may be used to change this
501
-	  value at runtime. More file names (but no more than 10) may be
502
-	  specified as parameters, simdisk_count grows accordingly.
503
-
504
-config SIMDISK0_FILENAME
505
-	string "Host filename for the first simulated device"
506
-	depends on BLK_DEV_SIMDISK = y
507
-	default ""
508
-	help
509
-	  Attach a first simdisk to a host file. Conventionally, this file
510
-	  contains a root file system.
511
-
512
-config SIMDISK1_FILENAME
513
-	string "Host filename for the second simulated device"
514
-	depends on BLK_DEV_SIMDISK = y && BLK_DEV_SIMDISK_COUNT != 1
515
-	default ""
516
-	help
517
-	  Another simulated disk in a host file for a buildroot-independent
518
-	  storage.
519
-
520685 config FORCE_MAX_ZONEORDER
521686 	int "Maximum zone order"
522687 	default "11"
....@@ -530,52 +695,6 @@
530695 
531696 	  This config option is actually maximum order plus one. For example,
532697 	  a value of 11 means that the largest free memory block is 2^10 pages.
533
-
534
-source "drivers/pcmcia/Kconfig"
535
-
536
-config PLATFORM_WANT_DEFAULT_MEM
537
-	def_bool n
538
-
539
-config DEFAULT_MEM_START
540
-	hex
541
-	prompt "PAGE_OFFSET/PHYS_OFFSET" if !MMU && PLATFORM_WANT_DEFAULT_MEM
542
-	default 0x60000000 if PLATFORM_WANT_DEFAULT_MEM
543
-	default 0x00000000
544
-	help
545
-	  This is the base address used for both PAGE_OFFSET and PHYS_OFFSET
546
-	  in noMMU configurations.
547
-
548
-	  If unsure, leave the default value here.
549
-
550
-config XTFPGA_LCD
551
-	bool "Enable XTFPGA LCD driver"
552
-	depends on XTENSA_PLATFORM_XTFPGA
553
-	default n
554
-	help
555
-	  There's a 2x16 LCD on most of XTFPGA boards, kernel may output
556
-	  progress messages there during bootup/shutdown. It may be useful
557
-	  during board bringup.
558
-
559
-	  If unsure, say N.
560
-
561
-config XTFPGA_LCD_BASE_ADDR
562
-	hex "XTFPGA LCD base address"
563
-	depends on XTFPGA_LCD
564
-	default "0x0d0c0000"
565
-	help
566
-	  Base address of the LCD controller inside KIO region.
567
-	  Different boards from XTFPGA family have LCD controller at different
568
-	  addresses. Please consult prototyping user guide for your board for
569
-	  the correct address. Wrong address here may lead to hardware lockup.
570
-
571
-config XTFPGA_LCD_8BIT_ACCESS
572
-	bool "Use 8-bit access to XTFPGA LCD"
573
-	depends on XTFPGA_LCD
574
-	default n
575
-	help
576
-	  LCD may be connected with 4- or 8-bit interface, 8-bit access may
577
-	  only be used with 8-bit interface. Please consult prototyping user
578
-	  guide for your board for the correct interface width.
579698 
580699 endmenu
581700