tcl/board/at91eb40a.cfg

   1 #Script for AT91EB40a
   2
   3 # FIXME use some standard target config, maybe create one from this
   4 #
   5 #       source [find target/...cfg]
   6
   7 if { [info exists CHIPNAME] } {
   8    set  _CHIPNAME $CHIPNAME
   9 } else {
  10    set  _CHIPNAME at91eb40a
  11 }
  12
  13 if { [info exists ENDIAN] } {
  14    set  _ENDIAN $ENDIAN
  15 } else {
  16    set  _ENDIAN little
  17 }
  18
  19 if { [info exists CPUTAPID] } {
  20    set _CPUTAPID $CPUTAPID
  21 } else {
  22    set _CPUTAPID 0x1f0f0f0f
  23 }
  24
  25
  26 #Atmel ties SRST & TRST together, at which point it makes
  27 #no sense to use TRST, but use TMS instead.
  28 #
  29 #The annoying thing with tying SRST & TRST together is that
  30 #there is no way to halt the CPU *before and during* the
  31 #SRST reset, which means that the CPU will run a number
  32 #of cycles before it can be halted(as much as milliseconds).
  33 reset_config srst_only srst_pulls_trst
  34
  35 #jtag scan chain
  36 jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
  37
  38 #target configuration
  39 set _TARGETNAME $_CHIPNAME.cpu
  40 target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position $_TARGETNAME
  41
  42 # speed up memory downloads
  43 arm7_9 fast_memory_access enable
  44 arm7_9 dcc_downloads enable
  45
  46 #flash driver
  47 set _FLASHNAME $_CHIPNAME.flash
  48 flash bank $_FLASHNAME cfi 0x01000000 0x200000 2 2 $_TARGETNAME
  49
  50 # required for usable performance. Used for lots of
  51 # other things than flash programming.
  52 $_TARGETNAME configure -work-area-phys 0x00030000 -work-area-size 0x10000 -work-area-backup 0
  53
  54 $_TARGETNAME configure -event reset-init {
  55         echo "Running reset init script for AT91EB40A"
  56         # Reset script for AT91EB40a
  57         reg cpsr 0x000000D3
  58         mww 0xFFE00020 0x1
  59         mww 0xFFE00024 0x00000000
  60         mww 0xFFE00000 0x01002539
  61         mww 0xFFFFF124 0xFFFFFFFF
  62         mww 0xffff0010 0x100
  63         mww 0xffff0034 0x100
  64 }
  65
  66 # This target is pretty snappy...
  67 adapter_khz 16000