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|
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
set _CHIPNAME pxa255
}
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 0xffffffff
}
jtag newtap $_CHIPNAME cpu -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id $_CPUTAPID
jtag_nsrst_delay 200
jtag_ntrst_delay 200
set _TARGETNAME [format "%s.cpu" $_CHIPNAME]
target create $_TARGETNAME xscale -endian $_ENDIAN -chain-position $_TARGETNAME -variant pxa255
$_TARGETNAME configure -event reset-init {
xscale cp15 15 0x00002001 #Enable CP0 and CP13 access
#
# setup GPIO
#
mww 0x40E00018 0x00008000 #CPSR0
sleep 20
mww 0x40E0001C 0x00000002 #GPSR1
sleep 20
mww 0x40E00020 0x00000008 #GPSR2
sleep 20
mww 0x40E0000C 0x00008000 #GPDR0
sleep 20
mww 0x40E00054 0x80000000 #GAFR0_L
sleep 20
mww 0x40E00058 0x00188010 #GAFR0_H
sleep 20
mww 0x40E0005C 0x60908018 #GAFR1_L
sleep 20
mww 0x40E0000C 0x0280E000 #GPDR0
sleep 20
mww 0x40E00010 0x821C88B2 #GPDR1
sleep 20
mww 0x40E00014 0x000F03DB #GPDR2
sleep 20
mww 0x40E00000 0x000F03DB #GPLR0
sleep 20
mww 0x40F00004 0x00000020 #PSSR
sleep 20
#
# setup memory controller
#
mww 0x48000008 0x01111998 #MSC0
sleep 20
mww 0x48000010 0x00047ff0 #MSC2
sleep 20
mww 0x48000014 0x00000000 #MECR
sleep 20
mww 0x48000028 0x00010504 #MCMEM0
sleep 20
mww 0x4800002C 0x00010504 #MCMEM1
sleep 20
mww 0x48000030 0x00010504 #MCATT0
sleep 20
mww 0x48000034 0x00010504 #MCATT1
sleep 20
mww 0x48000038 0x00004715 #MCIO0
sleep 20
mww 0x4800003C 0x00004715 #MCIO1
sleep 20
#
mww 0x48000004 0x03CA4018 #MDREF
sleep 20
mww 0x48000004 0x004B4018 #MDREF
sleep 20
mww 0x48000004 0x000B4018 #MDREF
sleep 20
mww 0x48000004 0x000BC018 #MDREF
sleep 20
mww 0x48000000 0x00001AC8 #MDCNFG
sleep 20
sleep 20
mww 0x48000000 0x00001AC9 #MDCNFG
sleep 20
mww 0x48000040 0x00000000 #MDMRS
sleep 20
}
reset_config trst_and_srst
#xscale debug_handler 0 0xFFFF0800 # debug handler base address
|
