89 lines
1.9 KiB
INI
89 lines
1.9 KiB
INI
# script for ATMEL sam3, a Cortex-M3 chip
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#
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# at91sam3u4e
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# at91sam3u2e
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# at91sam3u1e
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# at91sam3u4c
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# at91sam3u2c
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# at91sam3u1c
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#
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# at91sam3s4c
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# at91sam3s4b
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# at91sam3s4a
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# at91sam3s2c
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# at91sam3s2b
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# at91sam3s2a
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# at91sam3s1c
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# at91sam3s1b
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# at91sam3s1a
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#
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# at91sam3A4C
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# at91sam3A8C
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# at91sam3X4C
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# at91sam3X4E
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# at91sam3X8C
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# at91sam3X8E
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# at91sam3X8H
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source [find target/swj-dp.tcl]
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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 sam3
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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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# Work-area is a space in RAM used for flash programming
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# By default use 64kB
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if { [info exists WORKAREASIZE] } {
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set _WORKAREASIZE $WORKAREASIZE
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} else {
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set _WORKAREASIZE 0x4000
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}
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#jtag scan chain
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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 0x4ba00477
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}
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swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
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dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
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set _TARGETNAME $_CHIPNAME.cpu
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target create $_TARGETNAME cortex_m -endian $_ENDIAN -dap $_CHIPNAME.dap
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# 16K is plenty, the smallest chip has this much
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$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
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$_TARGETNAME configure -event gdb-flash-erase-start {
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halt
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}
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# JTAG speed should be <= F_CPU/6. F_CPU after reset is 4 MHz, so use F_JTAG = 0.5MHz
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#
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# Since we may be running of an RC oscilator, we crank down the speed a
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# bit more to be on the safe side. Perhaps superstition, but if are
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# running off a crystal, we can run closer to the limit. Note
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# that there can be a pretty wide band where things are more or less stable.
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adapter speed 500
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adapter srst delay 100
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if {[using_jtag]} {
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jtag_ntrst_delay 100
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}
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if {![using_hla]} {
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# if srst is not fitted use SYSRESETREQ to
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# perform a soft reset
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cortex_m reset_config sysresetreq
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}
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