1 # SPDX-License-Identifier: GPL-2.0-or-later
3 # The JTAG connection is disabled at reset, and during the ROM Code execution.
4 # It is re-enabled when the ROM code jumps in the boot file copied from an
5 # external Flash memory into the internalSRAM, or when the ROM code launches
6 # the SAM-BA monitor, when no boot file has been found in any external Flash
8 # For more JTAG related information see, :
9 # https://ww1.microchip.com/downloads/en/DeviceDoc/SAMA5D2-Series-Data-sheet-ds60001476G.pdf
12 # - if enabled, boundary Scan mode is activated. JTAG ID Code value is 0x05B3F03F.
13 # - if disabled, ICE mode is activated. Debug Port JTAG IDCODE value is 0x5BA00477
15 if { [info exists CHIPNAME] } {
16 set _CHIPNAME $CHIPNAME
18 set _CHIPNAME at91sama5d2
21 jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x01 -irmask 0x0f \
22 -expected-id 0x5ba00477
25 set _TARGETNAME $_CHIPNAME.cpu_a5
26 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
28 target create $_TARGETNAME.0 cortex_a -dap $_CHIPNAME.dap