tcl/target/at91sam3XXX.cfg

   1 # script for ATMEL sam3, a Cortex-M3 chip
   2 #
   3 # at91sam3u4e
   4 # at91sam3u2e
   5 # at91sam3u1e
   6 # at91sam3u4c
   7 # at91sam3u2c
   8 # at91sam3u1c
   9 #
  10 # at91sam3s4c
  11 # at91sam3s4b
  12 # at91sam3s4a
  13 # at91sam3s2c
  14 # at91sam3s2b
  15 # at91sam3s2a
  16 # at91sam3s1c
  17 # at91sam3s1b
  18 # at91sam3s1a
  19 #
  20 # at91sam3A4C
  21 # at91sam3A8C
  22 # at91sam3X4C
  23 # at91sam3X4E
  24 # at91sam3X8C
  25 # at91sam3X8E
  26 # at91sam3X8H
  27
  28 source [find target/swj-dp.tcl]
  29
  30 if { [info exists CHIPNAME] } {
  31    set _CHIPNAME $CHIPNAME
  32 } else {
  33    set _CHIPNAME sam3
  34 }
  35
  36 if { [info exists ENDIAN] } {
  37    set _ENDIAN $ENDIAN
  38 } else {
  39    set _ENDIAN little
  40 }
  41
  42 # Work-area is a space in RAM used for flash programming
  43 # By default use 64kB
  44 if { [info exists WORKAREASIZE] } {
  45    set _WORKAREASIZE $WORKAREASIZE
  46 } else {
  47    set _WORKAREASIZE 0x4000
  48 }
  49
  50 #jtag scan chain
  51 if { [info exists CPUTAPID] } {
  52    set _CPUTAPID $CPUTAPID
  53 } else {
  54    set _CPUTAPID 0x4ba00477
  55 }
  56
  57 swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
  58 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
  59
  60 set _TARGETNAME $_CHIPNAME.cpu
  61 target create $_TARGETNAME cortex_m -endian $_ENDIAN -dap $_CHIPNAME.dap
  62
  63 # 16K is plenty, the smallest chip has this much
  64 $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
  65
  66 $_TARGETNAME configure -event gdb-flash-erase-start {
  67     halt
  68 }
  69
  70 # JTAG speed should be <= F_CPU/6. F_CPU after reset is 4 MHz, so use F_JTAG = 0.5MHz
  71 #
  72 # Since we may be running of an RC oscilator, we crank down the speed a
  73 # bit more to be on the safe side. Perhaps superstition, but if are
  74 # running off a crystal, we can run closer to the limit. Note
  75 # that there can be a pretty wide band where things are more or less stable.
  76
  77 adapter_khz 500
  78
  79 adapter_nsrst_delay 100
  80 if {[using_jtag]} {
  81    jtag_ntrst_delay 100
  82 }
  83
  84 if {![using_hla]} {
  85    # if srst is not fitted use SYSRESETREQ to
  86    # perform a soft reset
  87    cortex_m reset_config sysresetreq
  88 }