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>
71 lines
1.8 KiB
INI
71 lines
1.8 KiB
INI
# script for str9
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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 str912
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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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# jtag speed. We need to stick to 16kHz until we've finished reset.
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jtag_rclk 16
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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 trst_and_srst
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if { [info exists FLASHTAPID ] } {
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set _FLASHTAPID $FLASHTAPID
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} else {
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set _FLASHTAPID 0x04570041
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}
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jtag newtap $_CHIPNAME flash -irlen 8 -ircapture 0x1 -irmask 0x1 -expected-id $_FLASHTAPID
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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 0x25966041
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}
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jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
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if { [info exists BSTAPID ] } {
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set _BSTAPID $BSTAPID
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} else {
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set _BSTAPID 0x1457f041
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}
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jtag newtap $_CHIPNAME bs -irlen 5 -ircapture 0x1 -irmask 0x1 -expected-id $_BSTAPID
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set _TARGETNAME $_CHIPNAME.cpu
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target create $_TARGETNAME arm966e -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm966e
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$_TARGETNAME configure -event reset-start { jtag_rclk 16 }
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$_TARGETNAME configure -event reset-init {
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# We can increase speed now that we know the target is halted.
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#jtag_rclk 3000
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# -- Enable 96K RAM
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# PFQBC enabled / DTCM & AHB wait-states disabled
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mww 0x5C002034 0x0191
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str9x flash_config 0 4 2 0 0x80000
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flash protect 0 0 7 off
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}
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$_TARGETNAME configure -work-area-phys 0x50000000 -work-area-size 16384 -work-area-backup 0
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#flash bank str9x <base> <size> 0 0 <target#> <variant>
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flash bank str9x 0x00000000 0x00080000 0 0 0
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flash bank str9x 0x00080000 0x00008000 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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