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

diff --git a/tcl/board/csb732.cfg b/tcl/board/csb732.cfg
new file mode 100644 (file)
index 0000000..8bf77cb
--- /dev/null
+++ b/tcl/board/csb732.cfg
@@ -0,0 +1,71 @@
+# 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
+}