abfd4b19a6
There are many "force an error till we get a good number" comments in
target/board files. This refers to the use-case where a config script
sets _CPUTAPID to 0xffffffff (which presumely gets overridden later):
if { [info exists CPUTAPID ] } {
set _CPUTAPID $CPUTAPID
} else {
# Force an error until we get a good number.
set _CPUTAPID 0xffffffff
}
However, the same comment was also copy-pasted in many files which do
_not_ set _CPUTAPID to 0xffffffff, where the comment doesn't make any
sense at all. Drop those comments. Also, add one missing comment, and
fix small whitespace and grammar issues.
Change-Id: Ic4ba3b5ccba87ed40cea0d6a7d66609fbdfa3c71
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Reviewed-on: http://openocd.zylin.com/136
Tested-by: jenkins
Reviewed-by: Peter Stuge <peter@stuge.se>
77 lines
2.0 KiB
INI
77 lines
2.0 KiB
INI
# Script for freescale DSP568013
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if { [info exists CHIPNAME] } {
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set _CHIPNAME $CHIPNAME
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} else {
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set _CHIPNAME dsp568013
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}
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if { [info exists ENDIAN] } {
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set _ENDIAN $ENDIAN
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} else {
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# this defaults to a big endian
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set _ENDIAN little
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}
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if { [info exists CPUTAPID ] } {
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set _CPUTAPID $CPUTAPID
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} else {
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set _CPUTAPID 0x01f2401d
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}
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#jtag speed
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adapter_khz 800
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reset_config srst_only
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#MASTER tap
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jtag newtap $_CHIPNAME chp -irlen 8 -ircapture 1 -irmask 0x03 -expected-id $_CPUTAPID
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#CORE tap
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jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 1 -irmask 0x03 -disable -expected-id 0x02211004
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#target configuration - There is only 1 tap at a time, hence only 1 target is defined.
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set _TARGETNAME $_CHIPNAME.cpu
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target create $_TARGETNAME dsp5680xx -endian $_ENDIAN -chain-position $_TARGETNAME
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# Setup the interesting tap
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# Disable polling to be able to get idcode from core tap. If re enabled, can be re enabled, but it should be disabled to correctly unlock flash (operations requiere certain instruction to be in the IR register during reset, and polling would change this)
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jtag configure $_CHIPNAME.chp -event setup "
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jtag tapenable $_TARGETNAME
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poll off
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"
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#select CORE tap by modifying the TLM register.
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#to be used when MASTER tap is selected.
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jtag configure $_TARGETNAME -event tap-enable "
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irscan $_CHIPNAME.chp 0x05;
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drscan $_CHIPNAME.chp 4 0x02;
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jtag tapdisable $_CHIPNAME.chp;
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"
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#select MASTER tap by modifying the TLM register.
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#to be used when CORE tap is selected.
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jtag configure $_CHIPNAME.chp -event tap-enable "
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irscan $_TARGETNAME 0x08;
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drscan $_TARGETNAME 4 0x1;
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jtag tapdisable $_TARGETNAME;
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"
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#disables the master tap
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jtag configure $_TARGETNAME -event tap-disable "
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"
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#TODO FIND SMARTER WAY.
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jtag configure $_CHIPNAME.chp -event tap-disable "
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"
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#TODO FIND SMARTER WAY.
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#working area at base of ram
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$_TARGETNAME configure -work-area-virt 0
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#setup flash
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set _FLASHNAME $_CHIPNAME.flash
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flash bank $_FLASHNAME dsp5680xx_flash 0 0 2 1 $_TARGETNAME
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