Ethan Eade <ethan@evolution.com> board config script for Cogent CSB732 i.MX35 (arm1136)

git-svn-id: svn://svn.berlios.de/openocd/trunk@2741 b42882b7-edfa-0310-969c-e2dbd0fdcd60

1 files changed, 71 insertions, 0 deletions

diff --git a/tcl/board/csb732.cfg b/tcl/board/csb732.cfg
new file mode 100644
index 0000000..8bf77cb
--- /dev/null
+++ b/tcl/board/csb732.cfg
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+# The Cogent CSB732 board has a single i.MX35 chip
+source [find target/imx35.cfg]
+
+# Determined by trial and error
+reset_config trst_and_srst combined
+jtag_nsrst_delay 200
+jtag_ntrst_delay 200
+
+$_TARGETNAME configure -event gdb-attach { reset init }
+$_TARGETNAME configure -event reset-init { csb732_init }
+
+# Bare-bones initialization of core clocks and SDRAM
+proc csb732_init { } {
+	
+	# Disable fast writing only for init
+	memwrite burst disable
+
+	# All delay loops are omitted.
+	# We assume the interpreter latency is enough.
+
+	# Allow access to all coprocessors
+	arm11 mcr imx35.cpu 15 0 15 1 0 0x2001
+
+	# Disable MMU, caches, write buffer
+	arm11 mcr imx35.cpu 15 0 1 0 0 0x78
+
+	# Grant manager access to all domains
+	arm11 mcr imx35.cpu 15 0 3 0 0 0xFFFFFFFF
+
+	# Set ARM clock to 532 MHz, AHB to 133 MHz
+	mww 0x53F80004 0x1000
+	
+	# Set core clock to 2 * 24 MHz * (11 + 1/12) = 532 MHz
+	mww 0x53F8001C 0xB2C01
+	
+	set ESDMISC 0xB8001010
+	set ESDCFG0 0xB8001004
+	set ESDCTL0 0xB8001000
+
+	# Enable DDR
+	mww $ESDMISC 0x4
+	
+	# Timing
+	mww $ESDCFG0 0x007fff3f
+
+	# CS0
+	mww $ESDCTL0 0x92120080
+
+	# Precharge all dummy write
+	mww 0x80000400 0
+
+	# Enable CS) auto-refresh
+	mww $ESDCTL0 0xA2120080
+	
+	# Refresh twice (dummy writes)
+	mww 0x80000000 0
+	mww 0x80000000 0
+
+	# Enable CS0 load mode register
+	mww $ESDCTL0 0xB2120080
+
+	# Dummy writes	
+	mwb 0x80000033 0x01
+	mwb 0x81000000 0x01
+
+	mww $ESDCTL0 0x82226080
+	mww 0x80000000 0
+
+	# Re-enable fast writing
+	memwrite burst enable
+}