1 files changed, 270 insertions, 95 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 017defaa525b..b24f4535ffe0 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)