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- # SPDX-License-Identifier: GPL-2.0-or-later
- #
- # SAMA5D2 devices support both JTAG and SWD transports.
- #
- # The JTAG connection is disabled at reset, and during the ROM Code execution.
- # It is re-enabled when the ROM code jumps in the boot file copied from an
- # external Flash memory into the internalSRAM, or when the ROM code launches
- # the SAM-BA monitor, when no boot file has been found in any external Flash
- # memory.
- # For more JTAG related information see, :
- # https://ww1.microchip.com/downloads/en/DeviceDoc/SAMA5D2-Series-Data-sheet-ds60001476G.pdf
- #
- # If JTAGSEL pin:
- # - if enabled, boundary Scan mode is activated. JTAG ID Code value is 0x05B3F03F.
- # - if disabled, ICE mode is activated. Debug Port JTAG IDCODE value is 0x5BA00477
- #
- source [find target/swj-dp.tcl]
- #jtag scan chain
- if { [info exists CPUTAPID] } {
- set _CPUTAPID $CPUTAPID
- } else {
- if { [using_jtag] } {
- set _CPUTAPID 0x5ba00477
- } else {
- # SWD IDCODE (single drop, arm)
- set _CPUTAPID 0x5ba02477
- }
- }
- if { [info exists CHIPNAME] } {
- set _CHIPNAME $CHIPNAME
- } else {
- set _CHIPNAME at91sama5d2
- }
- swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
- # Cortex-A5 target
- set _TARGETNAME $_CHIPNAME.cpu_a5
- dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
- target create $_TARGETNAME.0 cortex_a -dap $_CHIPNAME.dap
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