tcl/target/bcm47xx.cfg

   1 echo "Forcing reset_config to none to prevent OpenOCD from pulling SRST after the switch from LV is already performed"
   2 reset_config none
   3
   4 jtag newtap $_CHIPNAME-lv tap -irlen 32 -ircapture 0x1 -irmask 0x1f -expected-id $_LVTAPID -expected-id $_CPUID
   5 jtag configure $_CHIPNAME-lv.tap -event setup "jtag tapenable $_CHIPNAME.cpu"
   6 jtag configure $_CHIPNAME-lv.tap -event tap-disable {}
   7
   8 jtag newtap $_CHIPNAME cpu -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id $_CPUID -disable
   9 jtag configure $_CHIPNAME.cpu -event tap-enable "switch_lv_to_ejtag"
  10
  11 set _TARGETNAME $_CHIPNAME.cpu
  12 target create $_TARGETNAME mips_m4k -endian little -chain-position $_TARGETNAME
  13
  14 proc switch_lv_to_ejtag {} {
  15     global _CHIPNAME
  16     poll 0
  17     irscan $_CHIPNAME-lv.tap 0x143ff3a
  18     drscan $_CHIPNAME-lv.tap 32 1
  19     jtag tapdisable $_CHIPNAME-lv.tap
  20     poll 1
  21 }