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  1. # script for ATMEL sam3, a CORTEX-M3 chip
  2. #
  3. # at91sam3u4e
  4. # at91sam3u2e
  5. # at91sam3u1e
  6. # at91sam3u4c
  7. # at91sam3u2c
  8. # at91sam3u1c
  9. #
  10. # at91sam3s4c
  11. # at91sam3s4b
  12. # at91sam3s4a
  13. # at91sam3s2c
  14. # at91sam3s2b
  15. # at91sam3s2a
  16. # at91sam3s1c
  17. # at91sam3s1b
  18. # at91sam3s1a
  19. #
  20. # at91sam3A4C
  21. # at91sam3A8C
  22. # at91sam3X4C
  23. # at91sam3X4E
  24. # at91sam3X8C
  25. # at91sam3X8E
  26. # at91sam3X8H
  27. if { [info exists CHIPNAME] } {
  28. set _CHIPNAME $CHIPNAME
  29. } else {
  30. set _CHIPNAME sam3
  31. }
  32. if { [info exists ENDIAN] } {
  33. set _ENDIAN $ENDIAN
  34. } else {
  35. set _ENDIAN little
  36. }
  37. # JTAG speed should be <= F_CPU/6. F_CPU after reset is 4 MHz, so use F_JTAG = 0.5MHz
  38. #
  39. # Since we may be running of an RC oscilator, we crank down the speed a
  40. # bit more to be on the safe side. Perhaps superstition, but if are
  41. # running off a crystal, we can run closer to the limit. Note
  42. # that there can be a pretty wide band where things are more or less stable.
  43. adapter_khz 500
  44. adapter_nsrst_delay 100
  45. jtag_ntrst_delay 100
  46. #jtag scan chain
  47. if { [info exists CPUTAPID] } {
  48. set _CPUTAPID $CPUTAPID
  49. } else {
  50. set _CPUTAPID 0x4ba00477
  51. }
  52. jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
  53. set _TARGETNAME $_CHIPNAME.cpu
  54. target create $_TARGETNAME cortex_m3 -endian $_ENDIAN -chain-position $_TARGETNAME
  55. # 16K is plenty, the smallest chip has this much
  56. $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size 16384 -work-area-backup 0
  57. $_TARGETNAME configure -event gdb-flash-erase-start {
  58. halt
  59. }