cfg: add omapl138 support and da850evm preliminary support

This patch adds support for the omapl138 target and preliminary support for the da850evm. The
target cfg file is based on the icepick routing done by the target/ti_dm6446.cfg file.

I have performed limited testing with this setup. I am posting this patch in the interest of
sharing cfg files and in the hopes that the experts on this list can correct errors I have made or
point out enhancements.

The testing I have performed is debugging uboot with gdb where I also use the following local.cfg
and gdbinit files. Debugging appears to work in so much as 'ni' works.

local.cfg:
gdb_memory_map disable

gdbinit:
target remote localhost:3333
set remote hardware-breakpoint-limit 2
set remote hardware-watchpoint-limit 2
monitor poll on

Comments welcome.

Best Regards,
Ben Gardiner

tcl/board/da850evm.cfg

@@ -0,0 +1,10 @@
+#DA850 EVM board
+# http://focus.ti.com/dsp/docs/thirdparty/catalog/devtoolsproductfolder.tsp?actionPerformed=productFolder&productId=5939
+# http://www.logicpd.com/products/development-kits/zoom-omap-l138-evm-development-kit
+
+source [find target/omapl138.cfg]
+
+reset_config trst_and_srst separate
+
+#currently any pinmux/timing must be setup by UBL before openocd can do debug
+#TODO: implement pinmux/timing on reset like in board/dm365evm.cfg

tcl/target/omapl138.cfg

@@ -0,0 +1,66 @@
+#
+# Texas Instruments DaVinci family:  OMAPL138
+#
+if { [info exists CHIPNAME] } {
+   set  _CHIPNAME $CHIPNAME
+} else {
+   set  _CHIPNAME omapl138
+}
+
+source [find target/icepick.cfg]
+
+# Subsidiary TAP: ARM ETB11, with scan chain for 4K of ETM trace buffer
+if { [info exists ETB_TAPID ] } {
+   set _ETB_TAPID $ETB_TAPID
+} else {
+   set _ETB_TAPID 0x2b900f0f
+}
+jtag newtap $_CHIPNAME etb -irlen 4 -irmask 0xf -expected-id $_ETB_TAPID -disable
+jtag configure $_CHIPNAME.etb -event tap-enable \
+	"icepick_c_tapenable $_CHIPNAME.jrc 3"
+
+# Subsidiary TAP: ARM926ejs with scan chains for ARM Debug, EmbeddedICE-RT, ETM.
+if { [info exists CPU_TAPID ] } {
+   set _CPU_TAPID $CPU_TAPID
+} else {
+   set _CPU_TAPID 0x07926001
+}
+jtag newtap $_CHIPNAME arm -irlen 4 -irmask 0xf -expected-id $_CPU_TAPID -disable
+jtag configure $_CHIPNAME.arm -event tap-enable \
+	"icepick_c_tapenable $_CHIPNAME.jrc 2"
+
+# Primary TAP: ICEpick-C (JTAG route controller) and boundary scan
+if { [info exists JRC_TAPID ] } {
+   set _JRC_TAPID $JRC_TAPID
+} else {
+   set _JRC_TAPID 0x0b7d102f
+}
+jtag newtap $_CHIPNAME jrc -irlen 6 -irmask 0x3f -expected-id $_JRC_TAPID
+
+jtag configure $_CHIPNAME.jrc -event setup \
+	"jtag tapenable $_CHIPNAME.etb; jtag tapenable $_CHIPNAME.arm"
+
+################
+# GDB target:  the ARM, using SRAM1 for scratch.  SRAM0 (also 8K)
+# and the ETB memory (4K) are other options, while trace is unused.
+# Little-endian; use the OpenOCD default.
+set _TARGETNAME $_CHIPNAME.arm
+
+target create $_TARGETNAME arm926ejs -chain-position $_TARGETNAME
+$_TARGETNAME configure -work-area-phys 0x80000000 -work-area-size 0x2000
+
+# be absolutely certain the JTAG clock will work with the worst-case
+# CLKIN = 20 MHz (best case: 30 MHz) even when no bootloader turns
+# on the PLL and starts using it.  OK to speed up after clock setup.
+jtag_rclk 1500
+$_TARGETNAME configure -event "reset-start" { jtag_rclk 1500 }
+
+arm7_9 fast_memory_access enable
+arm7_9 dcc_downloads enable
+
+# trace setup
+etm config $_TARGETNAME 16 normal full etb
+etb config $_TARGETNAME $_CHIPNAME.etb
+
+gdb_breakpoint_override hard
+arm7_9 dbgrq enable