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- # TI/Luminary Stellaris LM3S chip family
-
- if { [info exists CHIPNAME] } {
- set _CHIPNAME $CHIPNAME
- } else {
- set _CHIPNAME lm3s
- }
-
- # CPU TAP ID 0x1ba00477 for early Sandstorm parts
- # CPU TAP ID 0x2ba00477 for later SandStorm parts, e.g. lm3s811 Rev C2
- # CPU TAP ID 0x3ba00477 for Cortex-M3 r1p2 (on Fury, DustDevil)
- # CPU TAP ID 0x4ba00477 for Cortex-M3 r2p0 (on Tempest)
- # ... we'll ignore the JTAG version field, rather than list every
- # chip revision that turns up.
- if { [info exists CPUTAPID ] } {
- set _CPUTAPID $CPUTAPID
- } else {
- set _CPUTAPID 0x0ba00477
- }
-
- jtag newtap $_CHIPNAME cpu -irlen 4 -irmask 0xf \
- -expected-id $_CPUTAPID -ignore-version
-
- # The "lm3s" variant uses a software reset rather than SRST.
- # This stops the debug registers from being cleared; it works
- # around an erratum which should be fixed in later silicon.
- set _TARGETNAME $_CHIPNAME.cpu
- target create $_TARGETNAME cortex_m3 -chain-position $_CHIPNAME.cpu \
- -variant lm3s
-
- # 8K working area at base of ram, not backed up
- #
- # NOTE: you may need or want to reconfigure the work area;
- # some parts have just 6K, and you may want to use other
- # addresses (at end of mem not beginning) or back it up.
- $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size 0x2000
-
- # JTAG speed ... slow enough to work with a 12 MHz RC oscillator;
- # LM3S parts don't support RTCK
- #
- # NOTE: this may be increased by a reset-init handler, after it
- # configures and enables the PLL. Or you might need to decrease
- # this, if you're using a slower clock.
- jtag_khz 500
- $_TARGETNAME configure -event reset-start {jtag_khz 500}
-
- # flash configuration ... autodetects sizes, autoprobed
- flash bank $_CHIPNAME.flash stellaris 0 0 0 0 $_TARGETNAME
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