1 # SPDX-License-Identifier: GPL-2.0-or-later
4 # Texas Instruments DaVinci family: TMS320DM355
6 if { [info exists CHIPNAME] } {
7 set _CHIPNAME $CHIPNAME
12 # TI boards default to EMU0/EMU1 *high* -- ARM and ETB are *disabled*
13 # after JTAG reset until ICEpick is used to route them in.
16 # With EMU0/EMU1 jumpered *low* ARM and ETB are *enabled* without
17 # needing any ICEpick interaction.
20 source [find target/icepick.cfg]
23 # Also note: when running without RTCK before the PLLs are set up, you
24 # may need to slow the JTAG clock down quite a lot (under 2 MHz).
27 # Subsidiary TAP: ARM ETB11, with scan chain for 4K of ETM trace buffer
28 if { [info exists ETB_TAPID] } {
29 set _ETB_TAPID $ETB_TAPID
31 set _ETB_TAPID 0x2b900f0f
33 jtag newtap $_CHIPNAME etb -irlen 4 -irmask 0xf -expected-id $_ETB_TAPID $EMU01
34 jtag configure $_CHIPNAME.etb -event tap-enable \
35 "icepick_c_tapenable $_CHIPNAME.jrc 1"
37 # Subsidiary TAP: ARM926ejs with scan chains for ARM Debug, EmbeddedICE-RT, ETM.
38 if { [info exists CPU_TAPID] } {
39 set _CPU_TAPID $CPU_TAPID
41 set _CPU_TAPID 0x07926001
43 jtag newtap $_CHIPNAME arm -irlen 4 -irmask 0xf -expected-id $_CPU_TAPID $EMU01
44 jtag configure $_CHIPNAME.arm -event tap-enable \
45 "icepick_c_tapenable $_CHIPNAME.jrc 0"
47 # Primary TAP: ICEpick (JTAG route controller) and boundary scan
48 if { [info exists JRC_TAPID] } {
49 set _JRC_TAPID $JRC_TAPID
51 set _JRC_TAPID 0x0b73b02f
53 jtag newtap $_CHIPNAME jrc -irlen 6 -irmask 0x3f -expected-id $_JRC_TAPID
55 jtag configure $_CHIPNAME.jrc -event setup \
56 "jtag tapenable $_CHIPNAME.etb; jtag tapenable $_CHIPNAME.arm"
60 # various symbol definitions, to avoid hard-wiring addresses
61 # and enable some sharing of DaVinci-family utility code
63 set dm355 [ dict create ]
65 # Physical addresses for controllers and memory
66 # (Some of these are valid for many DaVinci family chips)
67 dict set dm355 sram0 0x00010000
68 dict set dm355 sram1 0x00014000
69 dict set dm355 sysbase 0x01c40000
70 dict set dm355 pllc1 0x01c40800
71 dict set dm355 pllc2 0x01c40c00
72 dict set dm355 psc 0x01c41000
73 dict set dm355 gpio 0x01c67000
74 dict set dm355 a_emif 0x01e10000
75 dict set dm355 a_emif_cs0 0x02000000
76 dict set dm355 a_emif_cs1 0x04000000
77 dict set dm355 ddr_emif 0x20000000
78 dict set dm355 ddr 0x80000000
79 dict set dm355 uart0 0x01c20000
80 dict set dm355 uart1 0x01c20400
81 dict set dm355 uart2 0x01e06000
83 source [find target/davinci.cfg]
86 # GDB target: the ARM, using SRAM1 for scratch. SRAM0 (also 16K)
87 # and the ETB memory (4K) are other options, while trace is unused.
88 set _TARGETNAME $_CHIPNAME.arm
90 target create $_TARGETNAME arm926ejs -chain-position $_TARGETNAME
92 # NOTE that work-area-virt presumes a Linux 2.6.30-rc2+ kernel,
93 # and that the work area is used only with a kernel mmu context ...
94 $_TARGETNAME configure \
95 -work-area-virt [expr {0xfffe0000 + 0x4000}] \
96 -work-area-phys [dict get $dm355 sram1] \
97 -work-area-size 0x4000 \
100 # be absolutely certain the JTAG clock will work with the worst-case
101 # CLKIN = 24 MHz (best case: 36 MHz) even when no bootloader turns
102 # on the PLL and starts using it. OK to speed up after clock setup.
104 $_TARGETNAME configure -event "reset-start" { adapter speed 1500 }
106 arm7_9 fast_memory_access enable
107 arm7_9 dcc_downloads enable
110 etm config $_TARGETNAME 16 normal full etb
111 etb config $_TARGETNAME $_CHIPNAME.etb