tcl/target/at91sam3XXX.cfg

   1 # SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 # script for ATMEL sam3, a Cortex-M3 chip
   4 #
   5 # at91sam3u4e
   6 # at91sam3u2e
   7 # at91sam3u1e
   8 # at91sam3u4c
   9 # at91sam3u2c
  10 # at91sam3u1c
  11 #
  12 # at91sam3s4c
  13 # at91sam3s4b
  14 # at91sam3s4a
  15 # at91sam3s2c
  16 # at91sam3s2b
  17 # at91sam3s2a
  18 # at91sam3s1c
  19 # at91sam3s1b
  20 # at91sam3s1a
  21 #
  22 # at91sam3A4C
  23 # at91sam3A8C
  24 # at91sam3X4C
  25 # at91sam3X4E
  26 # at91sam3X8C
  27 # at91sam3X8E
  28 # at91sam3X8H
  29
  30 source [find target/swj-dp.tcl]
  31
  32 if { [info exists CHIPNAME] } {
  33    set _CHIPNAME $CHIPNAME
  34 } else {
  35    set _CHIPNAME sam3
  36 }
  37
  38 if { [info exists ENDIAN] } {
  39    set _ENDIAN $ENDIAN
  40 } else {
  41    set _ENDIAN little
  42 }
  43
  44 # Work-area is a space in RAM used for flash programming
  45 # By default use 64kB
  46 if { [info exists WORKAREASIZE] } {
  47    set _WORKAREASIZE $WORKAREASIZE
  48 } else {
  49    set _WORKAREASIZE 0x4000
  50 }
  51
  52 #jtag scan chain
  53 if { [info exists CPUTAPID] } {
  54    set _CPUTAPID $CPUTAPID
  55 } else {
  56    set _CPUTAPID 0x4ba00477
  57 }
  58
  59 swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
  60 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
  61
  62 set _TARGETNAME $_CHIPNAME.cpu
  63 target create $_TARGETNAME cortex_m -endian $_ENDIAN -dap $_CHIPNAME.dap
  64
  65 # 16K is plenty, the smallest chip has this much
  66 $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
  67
  68 $_TARGETNAME configure -event gdb-flash-erase-start {
  69     halt
  70 }
  71
  72 # JTAG speed should be <= F_CPU/6. F_CPU after reset is 4 MHz, so use F_JTAG = 0.5MHz
  73 #
  74 # Since we may be running of an RC oscilator, we crank down the speed a
  75 # bit more to be on the safe side. Perhaps superstition, but if are
  76 # running off a crystal, we can run closer to the limit. Note
  77 # that there can be a pretty wide band where things are more or less stable.
  78
  79 adapter speed 500
  80
  81 adapter srst delay 100
  82 if {[using_jtag]} {
  83    jtag_ntrst_delay 100
  84 }
  85
  86 if {![using_hla]} {
  87    # if srst is not fitted use SYSRESETREQ to
  88    # perform a soft reset
  89    cortex_m reset_config sysresetreq
  90 }