omap4460: add initial TCL support for the omap4460 es1.0

this patch adds the initial support for the omap4460 es1.0
version which is similar to the omap4430 and used on the
pandaboard-es.

Change-Id: If885f7d9f8809929bd799786b539e4f499fa3478
Signed-off-by: David Anders <danders.dev@gmail.com>
Reviewed-on: http://openocd.zylin.com/572
Tested-by: jenkins
Reviewed-by: Peter Stuge <peter@stuge.se>

tcl/target/omap4460.cfg

@@ -0,0 +1,126 @@
+# OMAP4460
+
+if { [info exists CHIPNAME] } {
+	set _CHIPNAME $CHIPNAME
+} else {
+	set _CHIPNAME omap4460
+}
+
+
+# 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 dap -irlen 4 -ircapture 0x1 -irmask 0xf \
+	-expected-id $_DAP_TAPID -disable
+jtag configure $_CHIPNAME.dap -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_dap -irlen 4 -ircapture 0x1 -irmask 0xf \
+	-expected-id $_M3_DAP_TAPID -disable
+jtag configure $_CHIPNAME.m31_dap -event tap-enable \
+	"icepick_c_tapenable $_CHIPNAME.jrc 5"
+
+jtag newtap $_CHIPNAME m30_dap -irlen 4 -ircapture 0x1 -irmask 0xf \
+	-expected-id $_M3_DAP_TAPID -disable
+jtag configure $_CHIPNAME.m30_dap -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  0x2b94e02f
+	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]"
+
+target create $_TARGETNAME cortex_a8 -chain-position $_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
+#
+target create $_CHIPNAME.m30 cortex_m3 -chain-position $_CHIPNAME.m30_dap
+target create $_CHIPNAME.m31 cortex_m3 -chain-position $_CHIPNAME.m31_dap
+
+
+# Once the JRC is up, enable our TAPs
+jtag configure $_CHIPNAME.jrc -event setup "
+	jtag tapenable $_CHIPNAME.dap
+	jtag tapenable $_CHIPNAME.m30_dap
+	jtag tapenable $_CHIPNAME.m31_dap
+"
+
+# Assume SRST is unavailable (e.g. TI-14 JTAG), so we must assert reset
+# ourselves using PRM_RSTCTRL.  1 is a warm reset, 2 a cold reset.
+set PRM_RSTCTRL 0x4A307B00
+$_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