From 10e435c96102b323a30323b0aeffd0db7bab1a48 Mon Sep 17 00:00:00 2001
From: zwelch <zwelch@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Wed, 17 Jun 2009 06:40:58 +0000
Subject: [PATCH] David Brownell <david-b@pacbell.net>:

DM6446 config updates:

 - List two more TAPs, as disabled, mostly for doc purposes
 - Included basic ICEpick support, still disabled by default
 - Shorten line lengths
 - Use $_TARGETNAME to configure the ETM and ETB
 - This ARM core don't support endianness overriding

For now, boards that can't jumper EMU0/EMU1 will need to tweak
a variable's setting.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2265 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
 tcl/target/ti_dm6446.cfg | 49 +++++++++++++++++++++++++---------------
 1 file changed, 31 insertions(+), 18 deletions(-)

diff --git a/tcl/target/ti_dm6446.cfg b/tcl/target/ti_dm6446.cfg
index 68a7c207..4ab342a0 100644
--- a/tcl/target/ti_dm6446.cfg
+++ b/tcl/target/ti_dm6446.cfg
@@ -6,19 +6,28 @@ if { [info exists 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.
+# Override by setting EMU01 to "-disable".
 #
 # 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).
 #
+source [find target/icepick.cfg]
+set EMU01 ""
+#set EMU01 "-disable"
+
+# Subsidiary TAP: unknown ... must enable via ICEpick
+jtag newtap $_CHIPNAME unknown -irlen 8 -ircapture 0xff -irmask 0xff -disable
+jtag configure $_CHIPNAME.unknown -event tap-enable \
+	"icepick_c_tapenable $_CHIPNAME.jrc 3"
+
+# Subsidiary TAP: C64x+ DSP ... must enable via ICEpick
+jtag newtap $_CHIPNAME dsp -irlen 38 -ircapture 0x25 -irmask 0x3f -disable
+jtag configure $_CHIPNAME.dsp -event tap-enable \
+	"icepick_c_tapenable $_CHIPNAME.jrc 2"
 
 # Subsidiary TAP: ARM ETB11, with scan chain for 4K of ETM trace buffer
 if { [info exists ETB_TAPID ] } {
@@ -26,7 +35,10 @@ if { [info exists ETB_TAPID ] } {
 } else {
    set _ETB_TAPID 0x2b900f0f
 }
-jtag newtap $_CHIPNAME etb -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_ETB_TAPID
+jtag newtap $_CHIPNAME etb -irlen 4 -ircapture 0x1 -irmask 0xf \
+	-expected-id $_ETB_TAPID $EMU01
+jtag configure $_CHIPNAME.etb -event tap-enable \
+	"icepick_c_tapenable $_CHIPNAME.jrc 1"
 
 # Subsidiary TAP: ARM926ejs with scan chains for ARM Debug, EmbeddedICE-RT, ETM.
 if { [info exists CPU_TAPID ] } {
@@ -34,33 +46,34 @@ if { [info exists 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.
+jtag newtap $_CHIPNAME arm -irlen 4 -ircapture 0x1 -irmask 0xf \
+	-expected-id $_CPU_TAPID $EMU01
+jtag configure $_CHIPNAME.arm -event tap-enable \
+	"icepick_c_tapenable $_CHIPNAME.jrc 0"
 
-# Primary TAP: ICEpick (JTAG route controller) and boundary scan
+# Primary TAP: ICEpick-C (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
+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.
+# Little-endian; use the OpenOCD default.
 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
+target create $_TARGETNAME arm926ejs -chain-position $_TARGETNAME
+$_TARGETNAME configure -work-area-phys 0x0000a000 -work-area-size 0x2000
 
 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
+etm config $_TARGETNAME 16 normal full etb
+etb config $_TARGETNAME $_CHIPNAME.etb
 
+# vim:syntax tcl
-- 
2.39.5