2 # Texas Instruments DaVinci family: TMS320DM6446
4 if { [info exists CHIPNAME] } {
5 set _CHIPNAME $CHIPNAME
10 # TI boards default to EMU0/EMU1 *high* -- ARM and ETB are *disabled*
11 # after JTAG reset until ICEpick is used to route them in.
14 # With EMU0/EMU1 jumpered *low* ARM and ETB are *enabled* without
15 # needing any ICEpick interaction.
18 source [find target/icepick.cfg]
20 # Subsidiary TAP: unknown ... must enable via ICEpick
21 jtag newtap $_CHIPNAME unknown -irlen 8 -disable
22 jtag configure $_CHIPNAME.unknown -event tap-enable \
23 "icepick_c_tapenable $_CHIPNAME.jrc 3"
25 # Subsidiary TAP: C64x+ DSP ... must enable via ICEpick
26 jtag newtap $_CHIPNAME dsp -irlen 38 -ircapture 0x25 -irmask 0x3f -disable
27 jtag configure $_CHIPNAME.dsp -event tap-enable \
28 "icepick_c_tapenable $_CHIPNAME.jrc 2"
30 # Subsidiary TAP: ARM ETB11, with scan chain for 4K of ETM trace buffer
31 if { [info exists ETB_TAPID] } {
32 set _ETB_TAPID $ETB_TAPID
34 set _ETB_TAPID 0x2b900f0f
36 jtag newtap $_CHIPNAME etb -irlen 4 -irmask 0xf -expected-id $_ETB_TAPID $EMU01
37 jtag configure $_CHIPNAME.etb -event tap-enable \
38 "icepick_c_tapenable $_CHIPNAME.jrc 1"
40 # Subsidiary TAP: ARM926ejs with scan chains for ARM Debug, EmbeddedICE-RT, ETM.
41 if { [info exists CPU_TAPID] } {
42 set _CPU_TAPID $CPU_TAPID
44 set _CPU_TAPID 0x07926001
46 jtag newtap $_CHIPNAME arm -irlen 4 -irmask 0xf -expected-id $_CPU_TAPID $EMU01
47 jtag configure $_CHIPNAME.arm -event tap-enable \
48 "icepick_c_tapenable $_CHIPNAME.jrc 0"
50 # Primary TAP: ICEpick-C (JTAG route controller) and boundary scan
51 if { [info exists JRC_TAPID] } {
52 set _JRC_TAPID $JRC_TAPID
54 set _JRC_TAPID 0x0b70002f
56 jtag newtap $_CHIPNAME jrc -irlen 6 -irmask 0x3f -expected-id $_JRC_TAPID
58 jtag configure $_CHIPNAME.jrc -event setup \
59 "jtag tapenable $_CHIPNAME.etb; jtag tapenable $_CHIPNAME.arm"
62 # GDB target: the ARM, using SRAM1 for scratch. SRAM0 (also 8K)
63 # and the ETB memory (4K) are other options, while trace is unused.
64 # Little-endian; use the OpenOCD default.
65 set _TARGETNAME $_CHIPNAME.arm
67 target create $_TARGETNAME arm926ejs -chain-position $_TARGETNAME
68 $_TARGETNAME configure -work-area-phys 0x0000a000 -work-area-size 0x2000
70 # be absolutely certain the JTAG clock will work with the worst-case
71 # CLKIN = 20 MHz (best case: 30 MHz) even when no bootloader turns
72 # on the PLL and starts using it. OK to speed up after clock setup.
74 $_TARGETNAME configure -event "reset-start" { adapter_khz 1500 }
76 arm7_9 fast_memory_access enable
77 arm7_9 dcc_downloads enable
80 etm config $_TARGETNAME 16 normal full etb
81 etb config $_TARGETNAME $_CHIPNAME.etb