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git://git.code.sf.net/p/openocd/code
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3e6f9e8d1e
The semantics of "-work-area-virt 0" (or phys) changed with the patch to require specifying physical or virtrual work area addresses. Specifying zero was previously a NOP. Now it means that address zero is valid. This patch addresses three related issues: - MMU-less processors should never specify work-area-virt; remove those specifications. Such processors include ARM7TDMI, Cortex-M3, and ARM966. - MMU-equipped processors *can* specify work-area-virt... but zero won't be appropriate, except in mischievous contexts (which hide null pointer exceptions). Remove those specs from those processors too. If any of those mappings is valid, someone will need to submit a patch adding it ... along with a comment saying what OS provides the mapping, and in which context. Example, say "works with Linux 2.6.30+, in kernel mode". (Note that ARM Linux doesn't map kernel memory to zero ...) - Clarify docs on that "-virt" and other work area stuff. Seems to me work-area-virt is quite problematic; not every operating system provides such static mappings; if they do, they're not in every MMU context... Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
41 lines
1023 B
INI
41 lines
1023 B
INI
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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 pic32mx
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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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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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# force an error till we get a good number
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set _CPUTAPID 0x30938053
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}
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jtag_nsrst_delay 100
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jtag_ntrst_delay 100
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#use combined on interfaces or targets that can't set TRST/SRST separately
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reset_config srst_only
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#jtag scan chain
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#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE)
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jtag newtap $_CHIPNAME cpu -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id $_CPUTAPID
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set _TARGETNAME $_CHIPNAME.cpu
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target create $_TARGETNAME mips_m4k -endian $_ENDIAN -chain-position $_TARGETNAME
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$_TARGETNAME configure -work-area-phys 0xa0000000 -work-area-size 16384 -work-area-backup 0
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flash bank pic32mx 0xbd000000 0 0 0 0
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flash bank pic32mx 0xbfc00000 0 0 0 0
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# For more information about the configuration files, take a look at:
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# openocd.texi
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