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45 lines
1.4 KiB

  1. # NXP LPC2478 ARM7TDMI-S with 512kB Flash and 64kB Local On-Chip SRAM (98kB total), clocked with 4MHz internal RC oscillator
  2. if { [info exists CHIPNAME] } {
  3. set _CHIPNAME $CHIPNAME
  4. } else {
  5. set _CHIPNAME lpc2478
  6. }
  7. if { [info exists CPUTAPID ] } {
  8. set _CPUTAPID $CPUTAPID
  9. } else {
  10. set _CPUTAPID 0x4f1f0f0f
  11. }
  12. #delays on reset lines
  13. adapter_nsrst_delay 100
  14. jtag_ntrst_delay 100
  15. # LPC2000 -> SRST causes TRST
  16. reset_config trst_and_srst srst_pulls_trst
  17. jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
  18. set _TARGETNAME $_CHIPNAME.cpu
  19. target create $_TARGETNAME arm7tdmi -chain-position $_TARGETNAME
  20. # LPC2478 has 64kB of SRAM on its main system bus (so-called Local On-Chip SRAM)
  21. $_TARGETNAME configure -work-area-phys 0x40000000 -work-area-size 0x10000 -work-area-backup 0
  22. $_TARGETNAME configure -event reset-init {
  23. # Force target into ARM state
  24. arm core_state arm
  25. # Do not remap 0x0000-0x0020 to anything but the Flash
  26. mwb 0xE01FC040 0x01
  27. }
  28. # LPC2378 has 512kB of FLASH, but upper 8kB are occupied by bootloader.
  29. # After reset the chip uses its internal 4MHz RC oscillator.
  30. # flash bank <name> lpc2000 <base> <size> 0 0 <target#> <variant> <clock> [calc checksum]
  31. set _FLASHNAME $_CHIPNAME.flash
  32. flash bank $_FLASHNAME lpc2000 0x0 0x7D000 0 0 $_TARGETNAME lpc2000_v2 4000 calc_checksum
  33. # Try to use RCLK, if RCLK is not available use "normal" mode. 4MHz / 6 = 666kHz, so use 500.
  34. jtag_rclk 500