; --------------------------------------------------------------------------------
; @Title: Example for manual JTAG access, Debugger in DOWN Mode
; @Description:
;This script reads out the IDCODE of an ARM7 core when the debugger is in
;DOWN mode.
;Detailed knowledge about JTAG is required to use manual JTAG control signals!
;Tested on an ARM7 target board.
; @Keywords: idcode
; @Author: PEG
; @Props: Template
; @Copyright: (C) 1989-2014 Lauterbach GmbH, licensed for use with TRACE32(R) only
; --------------------------------------------------------------------------------
; $Id: example1.cmm 6982 2023-02-22 11:10:17Z kjmal $
; @Copyright: Semidrive semiconductor
; @Title: Semidrive Secure Debug logic.
; The debugger is in DOWN mode, the JTAG driver is tristated.

area
SYStem.CPU CortexR5
SYStem.CONFIG.apbaccessport 0
SYStem.CONFIG.apbap1.base 0x2000
SYStem.CONFIG.debugaccessport 0
SYStem.CONFIG.debugap1.base 0x2000
SYStem.CONFIG.COREDEBUG.Base 0xF2081000
;e3
;SYStem.CONFIG.COREDEBUG.Base 0xF0a01000
SYStem.Option.TRST OFF
SYStem.JtagClock 1MHz
JTAG.PIN ENable
; enable JTAG output driver
JTAG.SHIFTTMS 1 1 1 1 1
; soft reset of the JTAG interface, goto Test-Logic Reset state
JTAG.SHIFTTMS 0 1 1 0 0
; goto Shift-IR state
JTAG.SHIFTREG 1 1 1 1
; shift in UID instruction, goto exit1-ir
JTAG.SHIFTTMS 1 1 0 0
; goto Shift-DR state
JTAG.SHIFTREG %long 0x0 0x0
; shift in 64bit dummy code. shift out our uid, goto exit1-dr
PRINT JTAG.SHIFT()
; print the UID
JTAG.SHIFTTMS 1 1 0 0
; goto Shift-DR state
JTAG.SHIFTREG %long 0x74657374 0x6b657930
; Note: 0x74657374 --> SEC_DBG_CFG[31, 0]!!, 0x6b657930 --> SEC_DBG_CFG[63, 32]!!
; shift in the corresponding key .shift out our uid, goto exit1-dr
PRINT JTAG.SHIFT()
JTAG.SHIFTTMS 1 1 1 1 1
; goto Test-Logic Reset state
JTAG.SHIFTTMS 0 1 0 0
; goto Shift-DR state
JTAG.SHIFTREG %long 0x0
; shift our IDCODE, goto exit1-dr
PRINT JTAG.SHIFT()
JTAG.PIN Disable
; Disable JTAG output driver
SYStem.Mode Attach
;attach
ENDDO