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#Hilscher netX 500 CPU
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
set _CHIPNAME netx500
}
if { [info exists ENDIAN] } {
set _ENDIAN $ENDIAN
} else {
set _ENDIAN little
}
if { [info exists CPUTAPID] } {
set _CPUTAPID $CPUTAPID
} else {
set _CPUTAPID 0x07926021
}
# jtag scan chain
jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
# that TAP is associated with a target
set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME arm926ejs -endian $_ENDIAN -chain-position $_TARGETNAME
proc mread32 {addr} {
set value(0) 0
mem2array value 32 $addr 1
return $value(0)
}
# This function must be called on netX100/500 right after halt
# If it is called later the needed register cannot be written anymore
proc sdram_fix { } {
set accesskey [mread32 0x00100070]
mww 0x00100070 [expr $accesskey]
mww 0x0010002c 0x00000001
if {[expr [mread32 0x0010002c] & 0x07] == 0x07} {
puts "SDRAM Fix was not executed. Probably your CPU halted too late and the register is already locked!"
} else {
puts "SDRAM Fix succeeded!"
}
}
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