diff options
Diffstat (limited to 'arch/blackfin/Kconfig')
| -rw-r--r-- | arch/blackfin/Kconfig | 365 |
1 files changed, 270 insertions, 95 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index 017defaa525..b24f4535ffe 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -57,7 +57,7 @@ config GENERIC_TIME bool default n -config GENERIC_CALIBRATE_DELAY +config GENERIC_GPIO bool default y @@ -323,7 +323,7 @@ config CMDLINE to the kernel, you may specify one here. As a minimum, you should specify the memory size and the root device (e.g., mem=8M, root=/dev/nfs). -comment "Board Setup" +comment "Clock/PLL Setup" config CLKIN_HZ int "Crystal Frequency in Hz" @@ -335,6 +335,118 @@ config CLKIN_HZ help The frequency of CLKIN crystal oscillator on the board in Hz. +config BFIN_KERNEL_CLOCK + bool "Re-program Clocks while Kernel boots?" + default n + help + This option decides if kernel clocks are re-programed from the + bootloader settings. If the clocks are not set, the SDRAM settings + are also not changed, and the Bootloader does 100% of the hardware + configuration. + +config PLL_BYPASS + bool "Bypass PLL" + depends on BFIN_KERNEL_CLOCK + default n + +config CLKIN_HALF + bool "Half Clock In" + depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS) + default n + help + If this is set the clock will be divided by 2, before it goes to the PLL. + +config VCO_MULT + int "VCO Multiplier" + depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS) + range 1 64 + default "22" if BFIN533_EZKIT + default "45" if BFIN533_STAMP + default "20" if BFIN537_STAMP + default "22" if BFIN533_BLUETECHNIX_CM + default "20" if BFIN537_BLUETECHNIX_CM + default "20" if BFIN561_BLUETECHNIX_CM + default "20" if BFIN561_EZKIT + help + This controls the frequency of the on-chip PLL. This can be between 1 and 64. + PLL Frequency = (Crystal Frequency) * (this setting) + +choice + prompt "Core Clock Divider" + depends on BFIN_KERNEL_CLOCK + default CCLK_DIV_1 + help + This sets the frequency of the core. It can be 1, 2, 4 or 8 + Core Frequency = (PLL frequency) / (this setting) + +config CCLK_DIV_1 + bool "1" + +config CCLK_DIV_2 + bool "2" + +config CCLK_DIV_4 + bool "4" + +config CCLK_DIV_8 + bool "8" +endchoice + +config SCLK_DIV + int "System Clock Divider" + depends on BFIN_KERNEL_CLOCK + range 1 15 + default 5 if BFIN533_EZKIT + default 5 if BFIN533_STAMP + default 4 if BFIN537_STAMP + default 5 if BFIN533_BLUETECHNIX_CM + default 4 if BFIN537_BLUETECHNIX_CM + default 4 if BFIN561_BLUETECHNIX_CM + default 5 if BFIN561_EZKIT + help + This sets the frequency of the system clock (including SDRAM or DDR). + This can be between 1 and 15 + System Clock = (PLL frequency) / (this setting) + +# +# Max & Min Speeds for various Chips +# +config MAX_VCO_HZ + int + default 600000000 if BF522 + default 600000000 if BF525 + default 600000000 if BF527 + default 400000000 if BF531 + default 400000000 if BF532 + default 750000000 if BF533 + default 500000000 if BF534 + default 400000000 if BF536 + default 600000000 if BF537 + default 533000000 if BF538 + default 533000000 if BF539 + default 600000000 if BF542 + default 533000000 if BF544 + default 533000000 if BF549 + default 600000000 if BF561 + +config MIN_VCO_HZ + int + default 50000000 + +config MAX_SCLK_HZ + int + default 133000000 + +config MIN_SCLK_HZ + int + default 27000000 + +comment "Kernel Timer/Scheduler" + +source kernel/Kconfig.hz + +comment "Memory Setup" + config MEM_SIZE int "SDRAM Memory Size in MBytes" default 32 if BFIN533_EZKIT @@ -364,15 +476,16 @@ config ENET_FLASH_PIN config BOOT_LOAD hex "Kernel load address for booting" default "0x1000" + range 0x1000 0x20000000 help This option allows you to set the load address of the kernel. This can be useful if you are on a board which has a small amount of memory or you wish to reserve some memory at the beginning of the address space. - Note that you generally want to keep this value at or above 4k - (0x1000) as this will allow the kernel to capture NULL pointer - references. + Note that you need to keep this value above 4k (0x1000) as this + memory region is used to capture NULL pointer references as well + as some core kernel functions. comment "LED Status Indicators" depends on (BFIN533_STAMP || BFIN533_BLUETECHNIX_CM) @@ -408,6 +521,52 @@ config BFIN_IDLE_LED_NUM help Select the LED (marked on the board) for you to blink. +choice + prompt "Blackfin Exception Scratch Register" + default BFIN_SCRATCH_REG_RETN + help + Select the resource to reserve for the Exception handler: + - RETN: Non-Maskable Interrupt (NMI) + - RETE: Exception Return (JTAG/ICE) + - CYCLES: Performance counter + + If you are unsure, please select "RETN". + +config BFIN_SCRATCH_REG_RETN + bool "RETN" + help + Use the RETN register in the Blackfin exception handler + as a stack scratch register. This means you cannot + safely use NMI on the Blackfin while running Linux, but + you can debug the system with a JTAG ICE and use the + CYCLES performance registers. + + If you are unsure, please select "RETN". + +config BFIN_SCRATCH_REG_RETE + bool "RETE" + help + Use the RETE register in the Blackfin exception handler + as a stack scratch register. This means you cannot + safely use a JTAG ICE while debugging a Blackfin board, + but you can safely use the CYCLES performance registers + and the NMI. + + If you are unsure, please select "RETN". + +config BFIN_SCRATCH_REG_CYCLES + bool "CYCLES" + help + Use the CYCLES register in the Blackfin exception handler + as a stack scratch register. This means you cannot + safely use the CYCLES performance registers on a Blackfin + board at anytime, but you can debug the system with a JTAG + ICE and use the NMI. + + If you are unsure, please select "RETN". + +endchoice + # # Sorry - but you need to put the hex address here - # @@ -448,10 +607,6 @@ endmenu menu "Blackfin Kernel Optimizations" -comment "Timer Tick" - -source kernel/Kconfig.hz - comment "Memory Optimizations" config I_ENTRY_L1 @@ -614,22 +769,22 @@ endchoice comment "Cache Support" -config BLKFIN_CACHE +config BFIN_ICACHE bool "Enable ICACHE" -config BLKFIN_DCACHE +config BFIN_DCACHE bool "Enable DCACHE" -config BLKFIN_DCACHE_BANKA +config BFIN_DCACHE_BANKA bool "Enable only 16k BankA DCACHE - BankB is SRAM" - depends on BLKFIN_DCACHE && !BF531 + depends on BFIN_DCACHE && !BF531 default n -config BLKFIN_CACHE_LOCK - bool "Enable Cache Locking" +config BFIN_ICACHE_LOCK + bool "Enable Instruction Cache Locking" choice prompt "Policy" - depends on BLKFIN_DCACHE - default BLKFIN_WB -config BLKFIN_WB + depends on BFIN_DCACHE + default BFIN_WB +config BFIN_WB bool "Write back" help Write Back Policy: @@ -646,7 +801,7 @@ config BLKFIN_WB If you are unsure of the options and you want to be safe, then go with Write Through. -config BLKFIN_WT +config BFIN_WT bool "Write through" help Write Back Policy: @@ -672,66 +827,9 @@ config L1_MAX_PIECE Set the max memory pieces for the L1 SRAM allocation algorithm. Min value is 16. Max value is 1024. -menu "Clock Settings" - - -config BFIN_KERNEL_CLOCK - bool "Re-program Clocks while Kernel boots?" - default n - help - This option decides if kernel clocks are re-programed from the - bootloader settings. If the clocks are not set, the SDRAM settings - are also not changed, and the Bootloader does 100% of the hardware - configuration. - -config VCO_MULT - int "VCO Multiplier" - depends on BFIN_KERNEL_CLOCK - default "22" if BFIN533_EZKIT - default "45" if BFIN533_STAMP - default "20" if BFIN537_STAMP - default "22" if BFIN533_BLUETECHNIX_CM - default "20" if BFIN537_BLUETECHNIX_CM - default "20" if BFIN561_BLUETECHNIX_CM - default "20" if BFIN561_EZKIT - -config CCLK_DIV - int "Core Clock Divider" - depends on BFIN_KERNEL_CLOCK - default 1 if BFIN533_EZKIT - default 1 if BFIN533_STAMP - default 1 if BFIN537_STAMP - default 1 if BFIN533_BLUETECHNIX_CM - default 1 if BFIN537_BLUETECHNIX_CM - default 1 if BFIN561_BLUETECHNIX_CM - default 1 if BFIN561_EZKIT - -config SCLK_DIV - int "System Clock Divider" - depends on BFIN_KERNEL_CLOCK - default 5 if BFIN533_EZKIT - default 5 if BFIN533_STAMP - default 4 if BFIN537_STAMP - default 5 if BFIN533_BLUETECHNIX_CM - default 4 if BFIN537_BLUETECHNIX_CM - default 4 if BFIN561_BLUETECHNIX_CM - default 5 if BFIN561_EZKIT - -config CLKIN_HALF - bool "Half ClockIn" - depends on BFIN_KERNEL_CLOCK - default n - -config PLL_BYPASS - bool "Bypass PLL" - depends on BFIN_KERNEL_CLOCK - default n - -endmenu - comment "Asynchonous Memory Configuration" -menu "EBIU_AMBCTL Global Control" +menu "EBIU_AMGCTL Global Control" config C_AMCKEN bool "Enable CLKOUT" default y @@ -941,24 +1039,6 @@ config DEBUG_ICACHE_CHECK also relocates the irq_panic() function to L1 memory, (which is un-cached). -config DEBUG_KERNEL_START - bool "Debug Kernel Startup" - depends on DEBUG_KERNEL - help - Say Y here to put in an mini-execption handler before the kernel - replaces the bootloader exception handler. This will stop kernels - from dieing at startup with no visible error messages. - -config DEBUG_SERIAL_EARLY_INIT - bool "Initialize serial driver early" - default n - depends on SERIAL_BFIN - help - Say Y here if you want to get kernel output early when kernel - crashes before the normal console initialization. If this option - is enable, console output will always go to the ttyBF0, no matter - what kernel boot paramters you set. - config DEBUG_HUNT_FOR_ZERO bool "Catch NULL pointer reads/writes" default y @@ -973,8 +1053,89 @@ config DEBUG_HUNT_FOR_ZERO Enabling this option will take up an extra entry in CPLB table. Otherwise, there is no extra overhead. +config DEBUG_BFIN_HWTRACE_ON + bool "Turn on Blackfin's Hardware Trace" + default y + help + All Blackfins include a Trace Unit which stores a history of the last + 16 changes in program flow taken by the program sequencer. The history + allows the user to recreate the program sequencer’s recent path. This + can be handy when an application dies - we print out the execution + path of how it got to the offending instruction. + + By turning this off, you may save a tiny amount of power. + +choice + prompt "Omit loop Tracing" + default DEBUG_BFIN_HWTRACE_COMPRESSION_OFF + depends on DEBUG_BFIN_HWTRACE_ON + help + The trace buffer can be configured to omit recording of changes in + program flow that match either the last entry or one of the last + two entries. Omitting one of these entries from the record prevents + the trace buffer from overflowing because of any sort of loop (for, do + while, etc) in the program. + + Because zero-overhead Hardware loops are not recorded in the trace buffer, + this feature can be used to prevent trace overflow from loops that + are nested four deep. + +config DEBUG_BFIN_HWTRACE_COMPRESSION_OFF + bool "Trace all Loops" + help + The trace buffer records all changes of flow + +config DEBUG_BFIN_HWTRACE_COMPRESSION_ONE + bool "Compress single-level loops" + help + The trace buffer does not record single loops - helpful if trace + is spinning on a while or do loop. + +config DEBUG_BFIN_HWTRACE_COMPRESSION_TWO + bool "Compress two-level loops" + help + The trace buffer does not record loops two levels deep. Helpful if + the trace is spinning in a nested loop + +endchoice + +config DEBUG_BFIN_HWTRACE_COMPRESSION + int + depends on DEBUG_BFIN_HWTRACE_ON + default 0 if DEBUG_BFIN_HWTRACE_COMPRESSION_OFF + default 1 if DEBUG_BFIN_HWTRACE_COMPRESSION_ONE + default 2 if DEBUG_BFIN_HWTRACE_COMPRESSION_TWO + + +config DEBUG_BFIN_HWTRACE_EXPAND + bool "Expand Trace Buffer greater than 16 entries" + depends on DEBUG_BFIN_HWTRACE_ON + default n + help + By selecting this option, every time the 16 hardware entries in + the Blackfin's HW Trace buffer are full, the kernel will move them + into a software buffer, for dumping when there is an issue. This + has a great impact on performance, (an interrupt every 16 change of + flows) and should normally be turned off, except in those nasty + debugging sessions + +config DEBUG_BFIN_HWTRACE_EXPAND_LEN + int "Size of Trace buffer (in power of 2k)" + range 0 4 + depends on DEBUG_BFIN_HWTRACE_EXPAND + default 1 + help + This sets the size of the software buffer that the trace information + is kept in. + 0 for (2^0) 1k, or 256 entries, + 1 for (2^1) 2k, or 512 entries, + 2 for (2^2) 4k, or 1024 entries, + 3 for (2^3) 8k, or 2048 entries, + 4 for (2^4) 16k, or 4096 entries + config DEBUG_BFIN_NO_KERN_HWTRACE bool "Trace user apps (turn off hwtrace in kernel)" + depends on DEBUG_BFIN_HWTRACE_ON default n help Some pieces of the kernel contain a lot of flow changes which can @@ -985,6 +1146,20 @@ config DEBUG_BFIN_NO_KERN_HWTRACE Say Y here to disable hardware tracing in some known "jumpy" pieces of code so that the trace buffer will extend further back. +config EARLY_PRINTK + bool "Early printk" + default n + help + This option enables special console drivers which allow the kernel + to print messages very early in the bootup process. + + This is useful for kernel debugging when your machine crashes very + early before the console code is initialized. After enabling this + feature, you must add "earlyprintk=serial,uart0,57600" to the + command line (bootargs). It is safe to say Y here in all cases, as + all of this lives in the init section and is thrown away after the + kernel boots completely. + config DUAL_CORE_TEST_MODULE tristate "Dual Core Test Module" depends on (BF561) |