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#Script for AT91EB40a
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
set _CHIPNAME at91eb40a
}
if { [info exists ENDIAN] } {
set _ENDIAN $ENDIAN
} else {
set _ENDIAN little
}
if { [info exists CPUTAPID ] } {
set _CPUTAPID $CPUTAPID
} else {
# force an error till we get a good number
set _CPUTAPID 0x1f0f0f0f
}
#Atmel ties SRST & TRST together, at which point it makes
#no sense to use TRST, but use TMS instead.
#
#The annoying thing with tying SRST & TRST together is that
#there is no way to halt the CPU *before and during* the
#SRST reset, which means that the CPU will run a number
#of cycles before it can be halted(as much as milliseconds).
reset_config srst_only srst_pulls_trst
#jtag scan chain
#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE)
jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
#target configuration
set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm7tdmi-s_r4
# speed up memory downloads
arm7_9 fast_memory_access enable
arm7_9 dcc_downloads enable
#flash driver
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME ecosflash 0x01000000 0x200000 2 2 $_TARGETNAME ecos/at91eb40a.elf
# required for usable performance. Used for lots of
# other things than flash programming.
$_TARGETNAME configure -work-area-phys 0x00030000 -work-area-size 0x10000 -work-area-backup 0
$_TARGETNAME configure -event reset-init {
puts "Running reset init script for AT91EB40A"
# Reset script for AT91EB40a
reg cpsr 0x000000D3
mww 0xFFE00020 0x1
mww 0xFFE00024 0x00000000
mww 0xFFE00000 0x01002539
mww 0xFFFFF124 0xFFFFFFFF
mww 0xffff0010 0x100
mww 0xffff0034 0x100
}
# This target is pretty snappy...
jtag_khz 16000
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