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56 lines
1.7 KiB

  1. # Use RCLK. If RCLK is not available fall back to 500kHz.
  2. #
  3. # Depending on cabling you might be able to eek this up to 2000kHz.
  4. jtag_rclk 500
  5. if { [info exists CHIPNAME] } {
  6. set _CHIPNAME $CHIPNAME
  7. } else {
  8. set _CHIPNAME lpc2148
  9. }
  10. if { [info exists ENDIAN] } {
  11. set _ENDIAN $ENDIAN
  12. } else {
  13. set _ENDIAN little
  14. }
  15. if { [info exists CPUTAPID ] } {
  16. set _CPUTAPID $CPUTAPID
  17. } else {
  18. set _CPUTAPID 0x4f1f0f0f
  19. }
  20. jtag_nsrst_delay 200
  21. jtag_ntrst_delay 200
  22. # NOTE!!! LPCs need reset pulled while RTCK is low. 0 to activate
  23. # JTAG, power-on reset is not enough, i.e. you need to perform a
  24. # reset before being able to talk to the LPC2148, attach is not possible.
  25. reset_config trst_and_srst srst_pulls_trst
  26. jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
  27. set _TARGETNAME $_CHIPNAME.cpu
  28. target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm7tdmi-s_r4
  29. $_TARGETNAME configure -work-area-virt 0 -work-area-phys 0x40000000 -work-area-size 0x4000 -work-area-backup 0
  30. $_TARGETNAME configure -event reset-init {
  31. # Force target into ARM state.
  32. soft_reset_halt
  33. # Do not remap 0x0000-0x0020 to anything but the flash (i.e. select
  34. # "User Flash Mode" where interrupt vectors are _not_ remapped,
  35. # and reside in flash instead).
  36. #
  37. # See section 7.1 on page 32 ("Memory Mapping control register") in
  38. # "UM10139: Volume 1: LPC214x User Manual", Rev. 02 -- 25 July 2006.
  39. # http://www.standardics.nxp.com/support/documents/microcontrollers/pdf/user.manual.lpc2141.lpc2142.lpc2144.lpc2146.lpc2148.pdf
  40. mwb 0xE01FC040 0x01
  41. }
  42. # flash bank lpc2000 <base> <size> 0 0 <target#> <variant> <clock> [calc_checksum]
  43. flash bank lpc2000 0x0 0x7d000 0 0 0 lpc2000_v2 14765 calc_checksum