#use combined on interfaces or targets that can't set TRST/SRST separately
reset_config srst_only srst_pulls_trst
-#jtag scan chain
-#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE)
-jtag_device 4 0x1 0xf 0xe
+if { [info exists CHIPNAME] } {
+ set _CHIPNAME $CHIPNAME
+} else {
+ set _CHIPNAME sam7x256
+}
-#target <type> <startup mode>
-#target arm7tdmi <reset mode> <chainpos> <endianness> <variant>
-target arm7tdmi little run_and_init 0 arm7tdmi
-run_and_halt_time 0 30
+if { [info exists ENDIAN] } {
+ set _ENDIAN $ENDIAN
+} else {
+ set _ENDIAN little
+}
-target_script 0 reset event/sam7x256_reset.script
+if { [info exists CPUTAPID ] } {
+ set _CPUTAPID $CPUTAPID
+} else {
+ set _CPUTAPID 0x3f0f0f0f
+}
-working_area 0 0x00200000 0x4000 nobackup
+jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
-#flash bank <driver> <base> <size> <chip_width> <bus_width>
-flash bank at91sam7 0 0 0 0 0
+set _TARGETNAME [format "%s.cpu" $_CHIPNAME]
+
+target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm7tdmi
+$_TARGETNAME configure -event reset-init {
+ # disable watchdog
+ mww 0xfffffd44 0x00008000
+ # enable user reset
+ mww 0xfffffd08 0xa5000001
+ # CKGR_MOR : enable the main oscillator
+ mww 0xfffffc20 0x00000601
+ sleep 10
+ # CKGR_PLLR: 96.1097 MHz
+ mww 0xfffffc2c 0x00481c0e
+ sleep 10
+ # PMC_MCKR : MCK = PLL / 2 ~= 48 MHz
+ mww 0xfffffc30 0x00000007
+ sleep 10
+ # MC_FMR: flash mode (FWS=1,FMCN=60)
+ mww 0xffffff60 0x003c0100
+ sleep 100
+}
+
+$_TARGETNAME configure -work-area-virt 0 -work-area-phys 0x00200000 -work-area-size 0x4000 -work-area-backup 0
+
+#flash bank <driver> <base_addr> <size> <chip_width> <bus_width> <target_number> [<target_name> <banks> <sectors_per_bank> <pages_per_sector> <page_size> <num_nvmbits> <ext_freq_khz>]
+flash bank at91sam7 0 0 0 0 0 0 0 0 0 0 0 0 18432
# For more information about the configuration files, take a look at:
-# http://openfacts.berlios.de/index-en.phtml?title=Open+On-Chip+Debugger
+# openocd.texi