tcl/target/am335x.cfg

   1
   2 if { [info exists CHIPNAME] } {
   3    set _CHIPNAME $CHIPNAME
   4 } else {
   5    set _CHIPNAME am335x
   6 }
   7
   8 # This chip contains an IcePick-D JTAG router.  The IcePick-C configuration is almost
   9 # compatible, but it doesn't work.  For now, we will just embed the IcePick-D
  10 # routines here.
  11 proc icepick_d_tapenable {jrc port} {
  12         # select router
  13         irscan $jrc 7 -endstate IRPAUSE
  14         drscan $jrc 8 0x89 -endstate DRPAUSE
  15
  16         # set ip control
  17         irscan $jrc 2 -endstate IRPAUSE
  18         drscan $jrc 32 [expr 0xa0002108 + ($port << 24)] -endstate DRPAUSE
  19
  20         # for icepick_D
  21         irscan $jrc 2 -endstate IRPAUSE
  22         drscan $jrc 32 0xe0002008 -endstate DRPAUSE
  23
  24         irscan $jrc 0x3F -endstate RUN/IDLE
  25         runtest 10
  26 }
  27
  28 #
  29 # M3 DAP
  30 #
  31 if { [info exists M3_DAP_TAPID] } {
  32         set _M3_DAP_TAPID $M3_DAP_TAPID
  33 } else {
  34         set _M3_DAP_TAPID 0x4b6b902f
  35 }
  36 jtag newtap $_CHIPNAME m3_dap -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_M3_DAP_TAPID -disable
  37 jtag configure $_CHIPNAME.m3_dap -event tap-enable "icepick_d_tapenable $_CHIPNAME.jrc 11"
  38
  39 #
  40 # Main DAP
  41 #
  42 if { [info exists DAP_TAPID] } {
  43    set _DAP_TAPID $DAP_TAPID
  44 } else {
  45    set _DAP_TAPID 0x4b6b902f
  46 }
  47 jtag newtap $_CHIPNAME dap -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_DAP_TAPID -disable
  48 jtag configure $_CHIPNAME.dap -event tap-enable "icepick_d_tapenable $_CHIPNAME.jrc 12"
  49
  50 #
  51 # ICEpick-D (JTAG route controller)
  52 #
  53 if { [info exists JRC_TAPID] } {
  54    set _JRC_TAPID $JRC_TAPID
  55 } else {
  56    set _JRC_TAPID 0x0b94402f
  57 }
  58 jtag newtap $_CHIPNAME jrc -irlen 6 -ircapture 0x1 -irmask 0x3f -expected-id $_JRC_TAPID -ignore-version
  59 jtag configure $_CHIPNAME.jrc -event setup "jtag tapenable $_CHIPNAME.dap"
  60 # some TCK tycles are required to activate the DEBUG power domain
  61 jtag configure $_CHIPNAME.jrc -event post-reset "runtest 100"
  62
  63 #
  64 # Cortex A8 target
  65 #
  66 set _TARGETNAME $_CHIPNAME.cpu
  67 target create $_TARGETNAME cortex_a -chain-position $_CHIPNAME.dap -dbgbase 0x80001000
  68
  69 # SRAM: 64K at 0x4030.0000; use the first 16K
  70 $_TARGETNAME configure -work-area-phys 0x40300000 -work-area-size 0x4000
  71
  72 $_TARGETNAME configure -event gdb-attach {
  73    cortex_a dbginit
  74    halt
  75 }
  76