Das Board wurde auch bei anderen Switches verbaut und es ist jemand
gelungen es per JTAG zu beschreiben:
http://webcache.googleusercontent.com/search?q=cache:nYiWq0bSh1sJ:springdaemons.com/2008/3/12/hacking-the-d-link-dgs-1248t-switch+&cd=1&hl=de&ct=clnk&gl=de
Details dazu fehlen leider. Ein config file für den S3C2510A01 gibt es
bei OpenOCD ebenfalls nicht. Aus diversen Fundstücken im NEtz habe ich
mir zwei config files erstellt:
1 | source [find interface/buspirate.cfg]
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2 | buspirate_vreg 0
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3 | buspirate_mode open-drain
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4 | buspirate_pullup 1
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5 | buspirate_port /dev/ttyUSB0
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und
1 | if { [info exists CHIPNAME] } {
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2 | set _CHIPNAME $CHIPNAME
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3 | } else {
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4 | set _CHIPNAME s3c2510a
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5 | }
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6 |
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7 | if { [info exists ENDIAN] } {
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8 | set _ENDIAN $ENDIAN
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9 | } else {
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10 | set _ENDIAN little
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11 | }
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12 |
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13 | if { [info exists CPUTAPID] } {
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14 | set _CPUTAPID $CPUTAPID
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15 | } else {
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16 | set _CPUTAPID 0x1094009d
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17 | }
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18 |
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19 | jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0x0f -expected-id $_CPUTAPID
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20 |
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21 | set _TARGETNAME $_CHIPNAME.cpu
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22 | # TODO: It's an ARM940T really.
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23 | # target create $_TARGETNAME arm920t -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm940t
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24 | target create $_TARGETNAME arm9tdmi -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm940t
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25 |
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26 | # $_TARGETNAME configure -work-area-phys 0x200000 -work-area-size 0x4000 -work-area-backup 1
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27 | $_TARGETNAME configure -work-area-phys 0x40000000 -work-area-size 0x4000 -work-area-backup 1
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28 |
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29 | reset_config trst_and_srst combined
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30 |
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31 | # External Macronix MX29LV800BBTC-90 (NOR flash) chip.
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32 | flash bank $_CHIPNAME.extnorflash cfi 0x00000000 0x100000 2 2 $_TARGETNAME
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33 |
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34 | init
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35 | reset halt
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36 |
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37 | # flash probe 0
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Quelle: http://sourceforge.net/p/openocd/mailman/message/29199929/
Beim Aufruf von
1 | sudo openocd -f mybuspirate.cfg -f s3c2510a.cfg
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spuckt er mir folgenden Fehler aus
1 | Runtime Error: embedded:startup.tcl:20: Unknown param: -variant, try one of: -type, -event, -work-area-virt, -work-area-phys, -work-area-size, -work-area-backup, -endian, -coreid, -chain-position, -dbgbase, or -rtos
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2 | in procedure 'script'
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3 | at file "embedded:startup.tcl", line 58
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4 | in procedure 'target' called at file "s3c2510a.cfg", line 24
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5 | in procedure 'ocd_bouncer'
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6 | at file "embedded:startup.tcl", line 20
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Warum soll der Parameter "variant" unzulässig sein? Siehe z.B. hier:
http://elk.informatik.fh-augsburg.de/pub/openocd-quickref/old/oocd-quickref-211.pdf
P1000992.jpg
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