2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "uClinux/Blackfin (w/o MMU) Kernel Configuration"
16 config RWSEM_GENERIC_SPINLOCK
20 config RWSEM_XCHGADD_ALGORITHM
36 config SEMAPHORE_SLEEPERS
40 config GENERIC_FIND_NEXT_BIT
44 config GENERIC_HWEIGHT
48 config GENERIC_HARDIRQS
52 config GENERIC_IRQ_PROBE
64 config FORCE_MAX_ZONEORDER
68 config GENERIC_CALIBRATE_DELAY
72 config IRQCHIP_DEMUX_GPIO
74 depends on (BF53x || BF561 || BF54x)
78 source "kernel/Kconfig.preempt"
80 menu "Blackfin Processor Options"
82 comment "Processor and Board Settings"
91 BF531 Processor Support.
96 BF532 Processor Support.
101 BF533 Processor Support.
106 BF534 Processor Support.
111 BF536 Processor Support.
116 BF537 Processor Support.
121 BF542 Processor Support.
126 BF544 Processor Support.
131 BF548 Processor Support.
136 BF549 Processor Support.
141 Not Supported Yet - Work in progress - BF561 Processor Support.
147 default BF_REV_0_2 if BF537
148 default BF_REV_0_3 if BF533
149 default BF_REV_0_0 if BF549
157 depends on (BF537 || BF536 || BF534)
161 depends on (BF561 || BF537 || BF536 || BF534 || BF533 || BF532 || BF531)
165 depends on (BF561 || BF533 || BF532 || BF531)
169 depends on (BF561 || BF533 || BF532 || BF531)
181 depends on (BF531 || BF532 || BF533 || BF534 || BF536 || BF537)
186 depends on (BF542 || BF544 || BF548 || BF549)
189 config BFIN_DUAL_CORE
194 config BFIN_SINGLE_CORE
196 depends on !BFIN_DUAL_CORE
201 default BFIN533_STAMP
203 Do NOT change the board here. Please use the top level
204 configuration to ensure that all the other settings are
209 depends on (BF533 || BF532 || BF531)
211 BF533-EZKIT-LITE board Support.
215 depends on (BF533 || BF532 || BF531)
217 BF533-STAMP board Support.
221 depends on (BF537 || BF536 || BF534)
223 BF537-STAMP board Support.
225 config BFIN533_BLUETECHNIX_CM
226 bool "Bluetechnix CM-BF533"
229 CM-BF533 support for EVAL- and DEV-Board.
231 config BFIN537_BLUETECHNIX_CM
232 bool "Bluetechnix CM-BF537"
235 CM-BF537 support for EVAL- and DEV-Board.
239 depends on (BF548 || BF549)
241 BFIN548-EZKIT board Support.
243 config BFIN561_BLUETECHNIX_CM
244 bool "Bluetechnix CM-BF561"
247 CM-BF561 support for EVAL- and DEV-Board.
253 BF561-EZKIT-LITE board Support.
259 BF561-TEPLA board Support.
262 bool "PNAV 1.0 board"
265 PNAV 1.0 board Support.
269 depends on (BF537 || BF536 \
270 || BF534 || BF561 || BF535 || BF533 || BF532 || BF531)
272 GENERIC or Custom board Support.
276 config MEM_GENERIC_BOARD
278 depends on GENERIC_BOARD
281 config MEM_MT48LC64M4A2FB_7E
283 depends on (BFIN533_STAMP)
286 config MEM_MT48LC16M16A2TG_75
288 depends on (BFIN533_EZKIT || BFIN561_EZKIT \
289 || BFIN533_BLUETECHNIX_CM || BFIN537_BLUETECHNIX_CM)
292 config MEM_MT48LC32M8A2_75
294 depends on (BFIN537_STAMP || PNAV10)
297 config MEM_MT48LC8M32B2B5_7
299 depends on (BFIN561_BLUETECHNIX_CM)
302 config BFIN_SHARED_FLASH_ENET
304 depends on (BFIN533_STAMP)
307 source "arch/blackfin/mach-bf533/Kconfig"
308 source "arch/blackfin/mach-bf561/Kconfig"
309 source "arch/blackfin/mach-bf537/Kconfig"
310 source "arch/blackfin/mach-bf548/Kconfig"
312 menu "Board customizations"
315 bool "Default bootloader kernel arguments"
318 string "Initial kernel command string"
319 depends on CMDLINE_BOOL
320 default "console=ttyBF0,57600"
322 If you don't have a boot loader capable of passing a command line string
323 to the kernel, you may specify one here. As a minimum, you should specify
324 the memory size and the root device (e.g., mem=8M, root=/dev/nfs).
326 comment "Clock/PLL Setup"
329 int "Crystal Frequency in Hz"
330 default "11059200" if BFIN533_STAMP
331 default "27000000" if BFIN533_EZKIT
332 default "25000000" if BFIN537_STAMP
333 default "30000000" if BFIN561_EZKIT
334 default "24576000" if PNAV10
336 The frequency of CLKIN crystal oscillator on the board in Hz.
338 config BFIN_KERNEL_CLOCK
339 bool "Re-program Clocks while Kernel boots?"
342 This option decides if kernel clocks are re-programed from the
343 bootloader settings. If the clocks are not set, the SDRAM settings
344 are also not changed, and the Bootloader does 100% of the hardware
349 depends on BFIN_KERNEL_CLOCK
354 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
357 If this is set the clock will be divided by 2, before it goes to the PLL.
361 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
363 default "22" if BFIN533_EZKIT
364 default "45" if BFIN533_STAMP
365 default "20" if BFIN537_STAMP
366 default "22" if BFIN533_BLUETECHNIX_CM
367 default "20" if BFIN537_BLUETECHNIX_CM
368 default "20" if BFIN561_BLUETECHNIX_CM
369 default "20" if BFIN561_EZKIT
371 This controls the frequency of the on-chip PLL. This can be between 1 and 64.
372 PLL Frequency = (Crystal Frequency) * (this setting)
375 prompt "Core Clock Divider"
376 depends on BFIN_KERNEL_CLOCK
379 This sets the frequency of the core. It can be 1, 2, 4 or 8
380 Core Frequency = (PLL frequency) / (this setting)
396 int "System Clock Divider"
397 depends on BFIN_KERNEL_CLOCK
399 default 5 if BFIN533_EZKIT
400 default 5 if BFIN533_STAMP
401 default 4 if BFIN537_STAMP
402 default 5 if BFIN533_BLUETECHNIX_CM
403 default 4 if BFIN537_BLUETECHNIX_CM
404 default 4 if BFIN561_BLUETECHNIX_CM
405 default 5 if BFIN561_EZKIT
407 This sets the frequency of the system clock (including SDRAM or DDR).
408 This can be between 1 and 15
409 System Clock = (PLL frequency) / (this setting)
412 # Max & Min Speeds for various Chips
416 default 600000000 if BF522
417 default 600000000 if BF525
418 default 600000000 if BF527
419 default 400000000 if BF531
420 default 400000000 if BF532
421 default 750000000 if BF533
422 default 500000000 if BF534
423 default 400000000 if BF536
424 default 600000000 if BF537
425 default 533000000 if BF538
426 default 533000000 if BF539
427 default 600000000 if BF542
428 default 533000000 if BF544
429 default 533000000 if BF549
430 default 600000000 if BF561
444 comment "Kernel Timer/Scheduler"
446 source kernel/Kconfig.hz
448 comment "Memory Setup"
451 int "SDRAM Memory Size in MBytes"
452 default 32 if BFIN533_EZKIT
453 default 64 if BFIN537_STAMP
454 default 64 if BFIN561_EZKIT
455 default 128 if BFIN533_STAMP
459 int "SDRAM Memory Address Width"
460 default 9 if BFIN533_EZKIT
461 default 9 if BFIN561_EZKIT
462 default 10 if BFIN537_STAMP
463 default 11 if BFIN533_STAMP
466 config ENET_FLASH_PIN
467 int "PF port/pin used for flash and ethernet sharing"
468 depends on (BFIN533_STAMP)
471 PF port/pin used for flash and ethernet sharing to allow other PF
472 pins to be used on other platforms without having to touch common
474 For example: PF0 --> 0,PF1 --> 1,PF2 --> 2, etc.
477 hex "Kernel load address for booting"
480 This option allows you to set the load address of the kernel.
481 This can be useful if you are on a board which has a small amount
482 of memory or you wish to reserve some memory at the beginning of
485 Note that you generally want to keep this value at or above 4k
486 (0x1000) as this will allow the kernel to capture NULL pointer
489 comment "LED Status Indicators"
490 depends on (BFIN533_STAMP || BFIN533_BLUETECHNIX_CM)
492 config BFIN_ALIVE_LED
493 bool "Enable Board Alive"
494 depends on (BFIN533_STAMP || BFIN533_BLUETECHNIX_CM)
497 Blink the LEDs you select when the kernel is running. Helps detect
500 config BFIN_ALIVE_LED_NUM
502 depends on BFIN_ALIVE_LED
503 range 1 3 if BFIN533_STAMP
504 default "3" if BFIN533_STAMP
506 Select the LED (marked on the board) for you to blink.
509 bool "Enable System Load/Idle LED"
510 depends on (BFIN533_STAMP || BFIN533_BLUETECHNIX_CM)
513 Blinks the LED you select when to determine kernel load.
515 config BFIN_IDLE_LED_NUM
517 depends on BFIN_IDLE_LED
518 range 1 3 if BFIN533_STAMP
519 default "2" if BFIN533_STAMP
521 Select the LED (marked on the board) for you to blink.
524 # Sorry - but you need to put the hex address here -
528 config BFIN_ALIVE_LED_PORT
530 default 0xFFC00700 if (BFIN533_STAMP)
532 # Peripheral Flag Direction Register
533 config BFIN_ALIVE_LED_DPORT
535 default 0xFFC00730 if (BFIN533_STAMP)
537 config BFIN_ALIVE_LED_PIN
539 default 0x04 if (BFIN533_STAMP && BFIN_ALIVE_LED_NUM = 1)
540 default 0x08 if (BFIN533_STAMP && BFIN_ALIVE_LED_NUM = 2)
541 default 0x10 if (BFIN533_STAMP && BFIN_ALIVE_LED_NUM = 3)
543 config BFIN_IDLE_LED_PORT
545 default 0xFFC00700 if (BFIN533_STAMP)
547 # Peripheral Flag Direction Register
548 config BFIN_IDLE_LED_DPORT
550 default 0xFFC00730 if (BFIN533_STAMP)
552 config BFIN_IDLE_LED_PIN
554 default 0x04 if (BFIN533_STAMP && BFIN_IDLE_LED_NUM = 1)
555 default 0x08 if (BFIN533_STAMP && BFIN_IDLE_LED_NUM = 2)
556 default 0x10 if (BFIN533_STAMP && BFIN_IDLE_LED_NUM = 3)
561 menu "Blackfin Kernel Optimizations"
563 comment "Memory Optimizations"
566 bool "Locate interrupt entry code in L1 Memory"
569 If enabled interrupt entry code (STORE/RESTORE CONTEXT) is linked
570 into L1 instruction memory.(less latency)
572 config EXCPT_IRQ_SYSC_L1
573 bool "Locate entire ASM lowlevel excepetion / interrupt - Syscall and CPLB handler code in L1 Memory"
576 If enabled entire ASM lowlevel exception and interrupt entry code (STORE/RESTORE CONTEXT) is linked
577 into L1 instruction memory.(less latency)
580 bool "Locate frequently called do_irq dispatcher function in L1 Memory"
583 If enabled frequently called do_irq dispatcher function is linked
584 into L1 instruction memory.(less latency)
586 config CORE_TIMER_IRQ_L1
587 bool "Locate frequently called timer_interrupt() function in L1 Memory"
590 If enabled frequently called timer_interrupt() function is linked
591 into L1 instruction memory.(less latency)
594 bool "Locate frequently idle function in L1 Memory"
597 If enabled frequently called idle function is linked
598 into L1 instruction memory.(less latency)
601 bool "Locate kernel schedule function in L1 Memory"
604 If enabled frequently called kernel schedule is linked
605 into L1 instruction memory.(less latency)
607 config ARITHMETIC_OPS_L1
608 bool "Locate kernel owned arithmetic functions in L1 Memory"
611 If enabled arithmetic functions are linked
612 into L1 instruction memory.(less latency)
615 bool "Locate access_ok function in L1 Memory"
618 If enabled access_ok function is linked
619 into L1 instruction memory.(less latency)
622 bool "Locate memset function in L1 Memory"
625 If enabled memset function is linked
626 into L1 instruction memory.(less latency)
629 bool "Locate memcpy function in L1 Memory"
632 If enabled memcpy function is linked
633 into L1 instruction memory.(less latency)
635 config SYS_BFIN_SPINLOCK_L1
636 bool "Locate sys_bfin_spinlock function in L1 Memory"
639 If enabled sys_bfin_spinlock function is linked
640 into L1 instruction memory.(less latency)
642 config IP_CHECKSUM_L1
643 bool "Locate IP Checksum function in L1 Memory"
646 If enabled IP Checksum function is linked
647 into L1 instruction memory.(less latency)
649 config CACHELINE_ALIGNED_L1
650 bool "Locate cacheline_aligned data to L1 Data Memory"
655 If enabled cacheline_anligned data is linked
656 into L1 data memory.(less latency)
658 config SYSCALL_TAB_L1
659 bool "Locate Syscall Table L1 Data Memory"
663 If enabled the Syscall LUT is linked
664 into L1 data memory.(less latency)
666 config CPLB_SWITCH_TAB_L1
667 bool "Locate CPLB Switch Tables L1 Data Memory"
671 If enabled the CPLB Switch Tables are linked
672 into L1 data memory.(less latency)
678 prompt "Kernel executes from"
680 Choose the memory type that the kernel will be running in.
685 The kernel will be resident in RAM when running.
690 The kernel will be resident in FLASH/ROM when running.
697 bool "Allow allocating large blocks (> 1MB) of memory"
699 Allow the slab memory allocator to keep chains for very large
700 memory sizes - upto 32MB. You may need this if your system has
701 a lot of RAM, and you need to able to allocate very large
702 contiguous chunks. If unsure, say N.
705 bool "Enable DMA Support"
706 depends on (BF533 || BF532 || BF531 || BF537 || BF536 || BF534 || BF561 || BF54x)
709 DMA driver for BF5xx.
712 prompt "Uncached SDRAM region"
713 default DMA_UNCACHED_1M
715 config DMA_UNCACHED_2M
716 bool "Enable 2M DMA region"
717 config DMA_UNCACHED_1M
718 bool "Enable 1M DMA region"
719 config DMA_UNCACHED_NONE
720 bool "Disable DMA region"
724 comment "Cache Support"
729 config BLKFIN_DCACHE_BANKA
730 bool "Enable only 16k BankA DCACHE - BankB is SRAM"
731 depends on BLKFIN_DCACHE && !BF531
733 config BLKFIN_CACHE_LOCK
734 bool "Enable Cache Locking"
738 depends on BLKFIN_DCACHE
744 Cached data will be written back to SDRAM only when needed.
745 This can give a nice increase in performance, but beware of
746 broken drivers that do not properly invalidate/flush their
749 Write Through Policy:
750 Cached data will always be written back to SDRAM when the
751 cache is updated. This is a completely safe setting, but
752 performance is worse than Write Back.
754 If you are unsure of the options and you want to be safe,
755 then go with Write Through.
761 Cached data will be written back to SDRAM only when needed.
762 This can give a nice increase in performance, but beware of
763 broken drivers that do not properly invalidate/flush their
766 Write Through Policy:
767 Cached data will always be written back to SDRAM when the
768 cache is updated. This is a completely safe setting, but
769 performance is worse than Write Back.
771 If you are unsure of the options and you want to be safe,
772 then go with Write Through.
777 int "Set the max L1 SRAM pieces"
780 Set the max memory pieces for the L1 SRAM allocation algorithm.
781 Min value is 16. Max value is 1024.
783 comment "Asynchonous Memory Configuration"
785 menu "EBIU_AMBCTL Global Control"
791 bool "DMA has priority over core for ext. accesses"
797 bool "Bank 0 16 bit packing enable"
802 bool "Bank 1 16 bit packing enable"
807 bool "Bank 2 16 bit packing enable"
812 bool "Bank 3 16 bit packing enable"
816 prompt"Enable Asynchonous Memory Banks"
820 bool "Disable All Banks"
826 bool "Enable Bank 0 & 1"
828 config C_AMBEN_B0_B1_B2
829 bool "Enable Bank 0 & 1 & 2"
832 bool "Enable All Banks"
836 menu "EBIU_AMBCTL Control"
856 #############################################################################
857 menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
864 source "drivers/pci/Kconfig"
867 bool "Support for hot-pluggable device"
869 Say Y here if you want to plug devices into your computer while
870 the system is running, and be able to use them quickly. In many
871 cases, the devices can likewise be unplugged at any time too.
873 One well known example of this is PCMCIA- or PC-cards, credit-card
874 size devices such as network cards, modems or hard drives which are
875 plugged into slots found on all modern laptop computers. Another
876 example, used on modern desktops as well as laptops, is USB.
878 Enable HOTPLUG and KMOD, and build a modular kernel. Get agent
879 software (at <http://linux-hotplug.sourceforge.net/>) and install it.
880 Then your kernel will automatically call out to a user mode "policy
881 agent" (/sbin/hotplug) to load modules and set up software needed
882 to use devices as you hotplug them.
884 source "drivers/pcmcia/Kconfig"
886 source "drivers/pci/hotplug/Kconfig"
890 menu "Executable file formats"
892 source "fs/Kconfig.binfmt"
896 menu "Power management options"
897 source "kernel/power/Kconfig"
900 prompt "Select PM Wakeup Event Source"
901 default PM_WAKEUP_GPIO_BY_SIC_IWR
904 If you have a GPIO already configured as input with the corresponding PORTx_MASK
905 bit set - "Specify Wakeup Event by SIC_IWR value"
907 config PM_WAKEUP_GPIO_BY_SIC_IWR
908 bool "Specify Wakeup Event by SIC_IWR value"
909 config PM_WAKEUP_BY_GPIO
910 bool "Cause Wakeup Event by GPIO"
911 config PM_WAKEUP_GPIO_API
912 bool "Configure Wakeup Event by PM GPIO API"
916 config PM_WAKEUP_SIC_IWR
917 hex "Wakeup Events (SIC_IWR)"
918 depends on PM_WAKEUP_GPIO_BY_SIC_IWR
919 default 0x80000000 if (BF537 || BF536 || BF534)
920 default 0x100000 if (BF533 || BF532 || BF531)
922 config PM_WAKEUP_GPIO_NUMBER
923 int "Wakeup GPIO number"
925 depends on PM_WAKEUP_BY_GPIO
926 default 2 if BFIN537_STAMP
929 prompt "GPIO Polarity"
930 depends on PM_WAKEUP_BY_GPIO
931 default PM_WAKEUP_GPIO_POLAR_H
932 config PM_WAKEUP_GPIO_POLAR_H
934 config PM_WAKEUP_GPIO_POLAR_L
936 config PM_WAKEUP_GPIO_POLAR_EDGE_F
938 config PM_WAKEUP_GPIO_POLAR_EDGE_R
940 config PM_WAKEUP_GPIO_POLAR_EDGE_B
946 if (BF537 || BF533 || BF54x)
948 menu "CPU Frequency scaling"
950 source "drivers/cpufreq/Kconfig"
956 If you want to enable this option, you should select the
957 DPMC driver from Character Devices.
964 source "drivers/Kconfig"
968 source "arch/blackfin/oprofile/Kconfig"
970 menu "Kernel hacking"
972 source "lib/Kconfig.debug"
975 bool "Hardware error interrupt debugging"
976 depends on DEBUG_KERNEL
978 When enabled, the hardware error interrupt is never disabled, and
979 will happen immediately when an error condition occurs. This comes
980 at a slight cost in code size, but is necessary if you are getting
981 hardware error interrupts and need to know where they are coming
984 config DEBUG_ICACHE_CHECK
985 bool "Check Instruction cache coherancy"
986 depends on DEBUG_KERNEL
987 depends on DEBUG_HWERR
989 Say Y here if you are getting wierd unexplained errors. This will
990 ensure that icache is what SDRAM says it should be, by doing a
991 byte wise comparision between SDRAM and instruction cache. This
992 also relocates the irq_panic() function to L1 memory, (which is
995 config DEBUG_KERNEL_START
996 bool "Debug Kernel Startup"
997 depends on DEBUG_KERNEL
999 Say Y here to put in an mini-execption handler before the kernel
1000 replaces the bootloader exception handler. This will stop kernels
1001 from dieing at startup with no visible error messages.
1003 config DEBUG_SERIAL_EARLY_INIT
1004 bool "Initialize serial driver early"
1006 depends on SERIAL_BFIN
1008 Say Y here if you want to get kernel output early when kernel
1009 crashes before the normal console initialization. If this option
1010 is enable, console output will always go to the ttyBF0, no matter
1011 what kernel boot paramters you set.
1013 config DEBUG_HUNT_FOR_ZERO
1014 bool "Catch NULL pointer reads/writes"
1017 Say Y here to catch reads/writes to anywhere in the memory range
1018 from 0x0000 - 0x0FFF (the first 4k) of memory. This is useful in
1019 catching common programming errors such as NULL pointer dereferences.
1021 Misbehaving applications will be killed (generate a SEGV) while the
1022 kernel will trigger a panic.
1024 Enabling this option will take up an extra entry in CPLB table.
1025 Otherwise, there is no extra overhead.
1027 config DEBUG_BFIN_HWTRACE_ON
1028 bool "Turn on Blackfin's Hardware Trace"
1031 All Blackfins include a Trace Unit which stores a history of the last
1032 16 changes in program flow taken by the program sequencer. The history
1033 allows the user to recreate the program sequencer’s recent path. This
1034 can be handy when an application dies - we print out the execution
1035 path of how it got to the offending instruction.
1037 By turning this off, you may save a tiny amount of power.
1040 prompt "Omit loop Tracing"
1041 default DEBUG_BFIN_HWTRACE_COMPRESSION_OFF
1042 depends on DEBUG_BFIN_HWTRACE_ON
1044 The trace buffer can be configured to omit recording of changes in
1045 program flow that match either the last entry or one of the last
1046 two entries. Omitting one of these entries from the record prevents
1047 the trace buffer from overflowing because of any sort of loop (for, do
1048 while, etc) in the program.
1050 Because zero-overhead Hardware loops are not recorded in the trace buffer,
1051 this feature can be used to prevent trace overflow from loops that
1052 are nested four deep.
1054 config DEBUG_BFIN_HWTRACE_COMPRESSION_OFF
1055 bool "Trace all Loops"
1057 The trace buffer records all changes of flow
1059 config DEBUG_BFIN_HWTRACE_COMPRESSION_ONE
1060 bool "Compress single-level loops"
1062 The trace buffer does not record single loops - helpful if trace
1063 is spinning on a while or do loop.
1065 config DEBUG_BFIN_HWTRACE_COMPRESSION_TWO
1066 bool "Compress two-level loops"
1068 The trace buffer does not record loops two levels deep. Helpful if
1069 the trace is spinning in a nested loop
1073 config DEBUG_BFIN_HWTRACE_COMPRESSION
1075 depends on DEBUG_BFIN_HWTRACE_ON
1076 default 0 if DEBUG_BFIN_HWTRACE_COMPRESSION_OFF
1077 default 1 if DEBUG_BFIN_HWTRACE_COMPRESSION_ONE
1078 default 2 if DEBUG_BFIN_HWTRACE_COMPRESSION_TWO
1081 config DEBUG_BFIN_HWTRACE_EXPAND
1082 bool "Expand Trace Buffer greater than 16 entries"
1083 depends on DEBUG_BFIN_HWTRACE_ON
1086 By selecting this option, every time the 16 hardware entries in
1087 the Blackfin's HW Trace buffer are full, the kernel will move them
1088 into a software buffer, for dumping when there is an issue. This
1089 has a great impact on performance, (an interrupt every 16 change of
1090 flows) and should normally be turned off, except in those nasty
1093 config DEBUG_BFIN_HWTRACE_EXPAND_LEN
1094 int "Size of Trace buffer (in power of 2k)"
1096 depends on DEBUG_BFIN_HWTRACE_EXPAND
1099 This sets the size of the software buffer that the trace information
1101 0 for (2^0) 1k, or 256 entries,
1102 1 for (2^1) 2k, or 512 entries,
1103 2 for (2^2) 4k, or 1024 entries,
1104 3 for (2^3) 8k, or 2048 entries,
1105 4 for (2^4) 16k, or 4096 entries
1107 config DEBUG_BFIN_NO_KERN_HWTRACE
1108 bool "Trace user apps (turn off hwtrace in kernel)"
1109 depends on DEBUG_BFIN_HWTRACE_ON
1112 Some pieces of the kernel contain a lot of flow changes which can
1113 quickly fill up the hardware trace buffer. When debugging crashes,
1114 the hardware trace may indicate that the problem lies in kernel
1115 space when in reality an application is buggy.
1117 Say Y here to disable hardware tracing in some known "jumpy" pieces
1118 of code so that the trace buffer will extend further back.
1120 config DUAL_CORE_TEST_MODULE
1121 tristate "Dual Core Test Module"
1125 Say Y here to build-in dual core test module for dual core test.
1128 bool "Display the CPLB information"
1130 Display the CPLB information.
1133 bool "Check the user pointer address"
1136 Usually the pointer transfer from user space is checked to see if its
1137 address is in the kernel space.
1139 Say N here to disable that check to improve the performance.
1143 source "security/Kconfig"
1145 source "crypto/Kconfig"
1147 source "lib/Kconfig"