David Claffey <dnclaffey@gmail.com> tested with the Atheros reference design "PB44"

git-svn-id: svn://svn.berlios.de/openocd/trunk@2662 b42882b7-edfa-0310-969c-e2dbd0fdcd60

diff --git a/tcl/target/ar71xx.cfg b/tcl/target/ar71xx.cfg
new file mode 100644 (file)
index 0000000..f2f5289
--- /dev/null
+++ b/tcl/target/ar71xx.cfg
@@ -0,0 +1,56 @@
+# Atheros AR71xx MIPS 24Kc SoC.
+# tested on PB44 refererence board
+
+jtag_nsrst_delay 100
+jtag_ntrst_delay 100
+
+reset_config trst_and_srst
+
+set CHIPNAME ar71xx
+
+jtag newtap $CHIPNAME cpu -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id 1
+
+set TARGETNAME [format "%s.cpu" $CHIPNAME]
+target create $TARGETNAME mips_m4k -endian big -chain-position $TARGETNAME
+
+$TARGETNAME configure -event reset-init {
+       #setup PLL to lowest common denominator 300/300/150 setting
+       mww 0xb8050000 0x000f40a3       # reset val + CPU:3 DDR:3 AHB:0
+       mww 0xb8050000 0x800f40a3       # send to PLL
+
+       #next command will reset for PLL changes to take effect
+       mww 0xb8050008 3                # set reset_switch and clock_switch (resets SoC)
+       reset halt                      # let openocd know that it is in the reset state
+
+       #initialize_pll
+       mww 0xb8050000 0x800f0080       # set sw_update bit
+       mww 0xb8050008 0                # clear reset_switch bit
+       mww 0xb8050000 0x800f00e8       # clr pwrdwn & bypass
+       mww 0xb8050008 1                # set clock_switch bit
+       sleep 1                         # wait for lock
+       
+       # Setup DDR config and flash mapping
+       mww 0xb8000000 0xefbc8cd0       # DDR cfg cdl val (rst: 0x5bfc8d0)
+       mww 0xb8000004 0x8e7156a2       # DDR cfg2 cdl val (rst: 0x80d106a8)
+       
+       mww 0xb8000010 8                # force precharge all banks
+       mww 0xb8000010 1                # force EMRS update cycle
+       mww 0xb800000c 0                # clr ext. mode register
+       mww 0xb8000010 2                # force auto refresh all banks
+       mww 0xb8000010 8                # force precharge all banks
+       mww 0xb8000008 0x31             # set DDR mode value CAS=3
+       mww 0xb8000010 1                # force EMRS update cycle
+       mww 0xb8000014 0x461b           # DDR refresh value
+       mww 0xb8000018 0xffff           # DDR Read Data This Cycle value (16bit: 0xffff)
+       mww 0xb800001c 0x7              # delay added to the DQS line (normal = 7)
+       mww 0xb8000020 0
+       mww 0xb8000024 0
+       mww 0xb8000028 0
+}      
+
+# setup working area somewhere in RAM
+$TARGETNAME configure -work-area-phys 0xa0600000 -work-area-size 0x20000
+
+# serial SPI capable flash
+# flash bank <driver> <base> <size> <chip_width> <bus_width>
+