David Brownell <david-b@pacbell.net> DaVinci dm6446

git-svn-id: svn://svn.berlios.de/openocd/trunk@1680 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/target/target/ti_dm6446.cfg

+#
+# Texas Instruments DaVinci family:  TMS320DM6446
+#
+if { [info exists CHIPNAME] } {
+   set  _CHIPNAME $CHIPNAME
+} else {
+   set  _CHIPNAME dm6446
+}
+if { [info exists ENDIAN] } {
+   set  _ENDIAN $ENDIAN
+} else {
+   set  _ENDIAN little
+}
+
+#
+# For now, expect EMU0/EMU1 jumpered LOW (not TI's default) so ARM and ETB
+# are enabled without making ICEpick route ARM and ETB into the JTAG chain.
+#
+# Also note:  when running without RTCK before the PLLs are set up, you
+# may need to slow the JTAG clock down quite a lot (under 2 MHz).
+#
+
+# 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 -ircapture 0x1 -irmask 0xf -expected-id $_ETB_TAPID
+
+# 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 -ircapture 0x1 -irmask 0xf -expected-id $_CPU_TAPID
+
+# Subsidiary TAP: C64x+ DSP ... NOT CURRENTLY INCLUDED, must add via ICEpick.
+# Documentation for DSP JTAG interfaces evidently needs NDAs.
+
+# Primary TAP: ICEpick (JTAG route controller) and boundary scan
+if { [info exists JRC_TAPID ] } {
+   set _JRC_TAPID $JRC_TAPID
+} else {
+   set _JRC_TAPID 0x0b70002f
+}
+jtag newtap $_CHIPNAME jrc -irlen 6 -ircapture 0x1 -irmask 0x3f -expected-id $_JRC_TAPID
+
+# GDB target:  the ARM, using SRAM1 for scratch.  SRAM0 (also 8K)
+# and the ETB memory (4K) are other options, while trace is unused.
+set _TARGETNAME $_CHIPNAME.arm
+
+target create $_TARGETNAME arm926ejs -endian $_ENDIAN -chain-position $_TARGETNAME
+$_TARGETNAME configure -work-area-virt 0 -work-area-phys 0x0000a000 -work-area-size 0x2000 -work-area-backup 0
+
+arm7_9 dbgrq enable
+arm7_9 fast_memory_access enable
+arm7_9 dcc_downloads enable
+
+# trace setup
+# FIXME we ought to be able to say "... config $_TARGETNAME ..."
+# (not "config 0") facilitating additional targets (e.g. other chips)
+etm config 0 16 normal full etb
+etb config 0 $_CHIPNAME.etb
+