src/target/target/imx31.cfg

   1 # imx31 config
   2 #
   3
   4 reset_config trst_and_srst
   5
   6 if { [info exists CHIPNAME] } {
   7    set  _CHIPNAME $CHIPNAME
   8 } else {
   9    set  _CHIPNAME imx31
  10 }
  11
  12 if { [info exists ENDIAN] } {
  13    set  _ENDIAN $ENDIAN
  14 } else {
  15    set  _ENDIAN little
  16 }
  17
  18 if { [info exists CPUTAPID ] } {
  19    set _CPUTAPID $CPUTAPID
  20 } else {
  21    set _CPUTAPID 0x07b3601d
  22 }
  23
  24 if { [info exists SDMATAPID ] } {
  25    set _SDMATAPID $SDMATAPID
  26 } else {
  27    set _SDMATAPID 0x2190101d
  28 }
  29
  30 #========================================
  31 # The "system jtag controller"
  32 # IMX31 reference manual, page 6-28 - figure 6-14
  33 if { [info exists SJCTAPID ] } {
  34    set _SJCTAPID $SJCTAPID
  35 } else {
  36    set _SJCTAPID 0x2b900f0f
  37 }
  38 jtag newtap $_CHIPNAME sjc -irlen 4 -ircapture 0x0 -irmask 0x0 -expected-id $_SJCTAPID
  39
  40 # The "SDMA" - <S>mart <DMA> controller debug tap
  41 # Based on some IO pins - this can be disabled & removed
  42 # See diagram: 6-14
  43 #   SIGNAL NAME:
  44 #    SJC_MOD - controls multiplexer - disables ARM1136
  45 #    SDMA_BYPASS - disables SDMA    -
  46 #
  47 # Per ARM: DDI0211J_arm1136_r1p5_trm.pdf - the ARM 1136 as a 5 bit IR register
  48 jtag newtap $_CHIPNAME cpu -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id $_CPUTAPID
  49
  50 # No IDCODE for this TAP
  51 jtag newtap $_CHIPNAME whatchacallit -irlen 4 -ircapture 0 -irmask 0xf -expected-id 0x0
  52
  53 # Per section 40.17.1, table 40-85 the IR register is 4 bits
  54 # But this conflicts with Diagram 6-13, "3bits ir and drs"
  55 jtag newtap $_CHIPNAME smda -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id $_SDMATAPID
  56
  57 set _TARGETNAME [format "%s.cpu" $_CHIPNAME]
  58 target create $_TARGETNAME arm11 -endian $_ENDIAN -chain-position $_TARGETNAME
  59
  60
  61 proc power_restore {} { puts "Sensed power restore. No action." }
  62 proc srst_deasserted {} { puts "Sensed nSRST deasserted. No action." }