# SPDX-License-Identifier: GPL-2.0-or-later

# OMAP4430

if { [info exists CHIPNAME] } {
	set _CHIPNAME $CHIPNAME
} else {
	set _CHIPNAME omap4430
}


# Although the OMAP4430 supposedly has an ICEpick-D, only the
# ICEpick-C router commands seem to work.
# See http://processors.wiki.ti.com/index.php/ICEPICK
source [find target/icepick.cfg]


#
# A9 DAP
#
if { [info exists DAP_TAPID] } {
	set _DAP_TAPID $DAP_TAPID
} else {
	set _DAP_TAPID 0x3BA00477
}

jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf \
	-expected-id $_DAP_TAPID -disable
jtag configure $_CHIPNAME.cpu -event tap-enable \
	"icepick_c_tapenable $_CHIPNAME.jrc 9"


#
# M3 DAPs, one per core
#
if { [info exists M3_DAP_TAPID] } {
	set _M3_DAP_TAPID $M3_DAP_TAPID
} else {
	set _M3_DAP_TAPID 0x4BA00477
}

jtag newtap $_CHIPNAME m31 -irlen 4 -ircapture 0x1 -irmask 0xf \
	-expected-id $_M3_DAP_TAPID -disable
jtag configure $_CHIPNAME.m31 -event tap-enable \
	"icepick_c_tapenable $_CHIPNAME.jrc 5"

jtag newtap $_CHIPNAME m30 -irlen 4 -ircapture 0x1 -irmask 0xf \
	-expected-id $_M3_DAP_TAPID -disable
jtag configure $_CHIPNAME.m30 -event tap-enable \
	"icepick_c_tapenable $_CHIPNAME.jrc 4"


#
# ICEpick-D JRC (JTAG route controller)
#
if { [info exists JRC_TAPID] } {
	set _JRC_TAPID $JRC_TAPID
} else {
	set _JRC_TAPID  0x3b95c02f
	set _JRC_TAPID2 0x1b85202f
}

# PandaBoard REV EA1 (PEAP platforms)
if { [info exists JRC_TAPID2] } {
	set _JRC_TAPID2 $JRC_TAPID2
} else {
	set _JRC_TAPID2 0x1b85202f
}



jtag newtap $_CHIPNAME jrc -irlen 6 -ircapture 0x1 -irmask 0x3f \
	-expected-id $_JRC_TAPID -expected-id $_JRC_TAPID2

# Required by ICEpick to power-up the debug domain
jtag configure $_CHIPNAME.jrc -event post-reset "runtest 200"


#
# GDB target: Cortex-A9, using DAP
#
# The debugger can connect to either core of the A9, but currently
# not both simultaneously.  Change -coreid to 1 to connect to the
# second core.
#
set _TARGETNAME $_CHIPNAME.cpu

# APB DBGBASE reads 0x80040000, but this points to an empty ROM table.
# 0x80000000 is cpu0 coresight region
#
#
# CORTEX_A8_PADDRDBG_CPU_SHIFT 13
# 0x80000000 | (coreid << CORTEX_A8_PADDRDBG_CPU_SHIFT)

set _coreid 0
set _dbgbase [expr {0x80000000 | ($_coreid << 13)}]
echo "Using dbgbase = [format 0x%x $_dbgbase]"

dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
target create $_TARGETNAME cortex_a -dap $_CHIPNAME.dap \
  -coreid 0 -dbgbase $_dbgbase

# SRAM: 56KiB at 0x4030.0000
$_TARGETNAME configure -work-area-phys 0x40300000 -work-area-size 0x1000


#
# M3 targets, separate TAP/DAP for each core
#
dap create $_CHIPNAME.m30_dap -chain-position $_CHIPNAME.m30
dap create $_CHIPNAME.m31_dap -chain-position $_CHIPNAME.m31
target create $_CHIPNAME.m30 cortex_m -dap $_CHIPNAME.m30_dap
target create $_CHIPNAME.m31 cortex_m -dap $_CHIPNAME.m31_dap


# Once the JRC is up, enable our TAPs
jtag configure $_CHIPNAME.jrc -event setup "
	jtag tapenable $_CHIPNAME.cpu
	jtag tapenable $_CHIPNAME.m30
	jtag tapenable $_CHIPNAME.m31
"

# Assume SRST is unavailable (e.g. TI-14 JTAG), so we must assert reset
# ourselves using PRM_RSTCTRL.  1 is a warm reset, 2 a cold reset.
set PRM_RSTCTRL 0x4A307B00
$_TARGETNAME configure -event reset-assert "$_TARGETNAME mww phys $PRM_RSTCTRL 0x1"
$_CHIPNAME.m30 configure -event reset-assert { }
$_CHIPNAME.m31 configure -event reset-assert { }

# Soft breakpoints don't currently work due to broken cache handling
gdb_breakpoint_override hard
