target library: configuration files for openocd tested with Atmel SAM-ICE V6 JTAG.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

tcl/board/atmel_at91sam9rl-ek.cfg

+################################################################################
+#
+# Generated for Atmel AT91SAM9RL-EK evaluation board using Atmel SAM-ICE (J-Link) V6
+#
+# Atmel AT91SAM9RL : PLL = 200 MHz, MCK = 100 MHz
+#                     OSCSEL configured for external 32.768 kHz crystal
+#
+# 32-bit SDRAM : 2 x Micron MT48LC16M16A2, 4M x 16Bit x 4 Banks
+#
+################################################################################
+
+# We add to the minimal configuration.
+source [find target/at91sam9rl.cfg]
+
+$_TARGETNAME configure -event reset-start {
+        # At reset CPU runs at 32.768 kHz.
+        # JTAG Frequency must be 6 times slower if RCLK is not supported.
+        jtag_rclk 5
+        halt
+        # RSTC_MR : enable user reset, MMU may be enabled... use physical address
+        mww phys 0xfffffd08 0xa5000501
+}
+
+$_TARGETNAME configure -event reset-init {
+        mww 0xfffffd44 0x00008000         # WDT_MR : disable watchdog
+
+	mww 0xfffffc20 0x00004001         # CKGR_MOR : enable the main oscillator
+        sleep 20                          # wait 20 ms
+        mww 0xfffffc30 0x00000001         # PMC_MCKR : switch to main oscillator
+        sleep 10                          # wait 10 ms
+        mww 0xfffffc28 0x2031bf03         # CKGR_PLLR: Set PLL Register for 200 MHz
+        sleep 20                          # wait 20 ms
+        mww 0xfffffc30 0x00000101         # PMC_MCKR : Select prescaler (divide by 2)
+        sleep 10                          # wait 10 ms
+        mww 0xfffffc30 0x00000102         # PMC_MCKR : Clock from PLL is selected (100 MHz)
+        sleep 10                          # wait 10 ms
+
+	# Increase JTAG Speed to 6 MHz if RCLK is not supported
+        jtag_rclk 6000
+
+	arm7_9 dcc_downloads enable       # Enable faster DCC downloads
+
+	mww 0xfffff670 0xffff0000         # PIO_ASR  : Select peripheral function for D16..D31 (PIOB)
+        mww 0xfffff604 0xffff0000         # PIO_PDR  : Disable PIO function for D16..D31 (PIOB)
+
+        mww 0xffffef20 0x00010002         # EBI_CSA  : Assign EBI Chip Select 1 to SDRAM, VDDIOMSEL set for +3V3 memory
+
+	mww 0xffffea08 0x85227259         # SDRAMC_CR : Configure SDRAM (2 x Micron MT48LC16M16A2 : 4M x 16Bit x 4 Banks)
+
+	mww 0xffffea00 0x1                # SDRAMC_MR : issue a NOP command
+	mww 0x20000000 0
+	mww 0xffffea00 0x2                # SDRAMC_MR : issue an 'All Banks Precharge' command
+	mww 0x20000000 0
+	mww 0xffffea00 0x4                # SDRAMC_MR : issue 8 x 'Auto-Refresh' Command
+	mww 0x20000000 0
+	mww 0xffffea00 0x4
+	mww 0x20000000 0
+	mww 0xffffea00 0x4
+	mww 0x20000000 0
+	mww 0xffffea00 0x4
+	mww 0x20000000 0
+	mww 0xffffea00 0x4
+	mww 0x20000000 0
+	mww 0xffffea00 0x4
+	mww 0x20000000 0
+	mww 0xffffea00 0x4
+	mww 0x20000000 0
+	mww 0xffffea00 0x4
+	mww 0x20000000 0
+	mww 0xffffea00 0x3                # SDRAMC_MR : issue a 'Load Mode Register' command
+	mww 0x20000000 0
+	mww 0xffffea00 0x0                # SDRAMC_MR : normal mode
+	mww 0x20000000 0
+	mww 0xffffea04 0x2b6              # SDRAMC_TR : Set refresh timer count to 7us
+}

tcl/target/at91sam9rl.cfg

+######################################
+# Target:    Atmel AT91SAM9RL
+######################################
+
+if { [info exists CHIPNAME] } {
+   set  _CHIPNAME $CHIPNAME
+} else {
+   set  _CHIPNAME at91sam9rl
+}
+
+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 0x0792603f
+}
+
+reset_config trst_and_srst separate trst_push_pull srst_open_drain
+
+#
+jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
+
+jtag_nsrst_delay 300
+jtag_ntrst_delay 200
+
+jtag_rclk 3
+
+######################
+# Target configuration
+######################
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME arm926ejs -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm926ejs
+
+# Internal sram1 memory
+$_TARGETNAME configure -work-area-phys 0x00300000 -work-area-size 0x10000 -work-area-backup 1
+
+