Support for KaRo TX25 CPU Module on a StarterkitV base board

This patch adds support for the KaRo TX25 module on a StarterkitV base board.
For board details, check http://www.karo-electronics.com/tx25.html

Change-Id: I2c80c5467bc476955b55196728aa3c37c8185e6c
Author: Simon Widmer <simonxwidmer@gmail.com>
Signed-off-by: Mark Vels <mark.vels@team-embedded.nl>
Reviewed-on: http://openocd.zylin.com/557
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

tcl/board/tx25_stk5.cfg

@@ -0,0 +1,158 @@
+# -------------------------------------------------------------------------
+# KaRo TX25 CPU Module on a StarterkitV base board
+# http://www.karo-electronics.com/tx25.html
+# -------------------------------------------------------------------------
+
+
+source [find tcl/target/imx25.cfg]
+
+	#-------------------------------------------------------------------------
+	# Declare Nand
+	#-------------------------------------------------------------------------
+
+	nand device K9F1G08UOC mxc imx25.cpu mx25 hwecc biswap
+
+
+$_TARGETNAME configure -event gdb-attach { reset init }
+$_TARGETNAME configure -event reset-init { tx25_init }
+
+
+proc tx25_init { } {
+
+	#-------------------------------------------------------------------------
+	# AIPS setup - Only setup MPROTx registers. The PACR default values are good.
+	# Set all MPROTx to be non-bufferable, trusted for R/W,
+	# not forced to user-mode.
+	#-------------------------------------------------------------------------
+
+	mww 0x43f00000 0x77777777
+	mww 0x43f00004 0x77777777
+	mww 0x53f00000 0x77777777
+	mww 0x53f00004 0x77777777
+
+	sleep 100
+
+	#-------------------------------------------------------------------------
+	# MAX (Multi-Layer AHB Crossbar Switch) setup
+	# MPR - priority for MX25 is (SDHC2/SDMA)>USBOTG>RTIC>IAHB>DAHB
+	#-------------------------------------------------------------------------
+
+	mww 0x43f04000 0x00043210
+	mww 0x43f04100 0x00043210
+	mww 0x43f04200 0x00043210
+	mww 0x43f04300 0x00043210
+	mww 0x43f04400 0x00043210
+
+	# SGPCR - always park on last master
+	mww 0x43f04010 0x10
+	mww 0x43f04110 0x10
+	mww 0x43f04210 0x10
+	mww 0x43f04310 0x10
+	mww 0x43f04410 0x10
+
+	# MGPCR - restore default values
+	mww 0x43f04800 0x0
+	mww 0x43f04900 0x0
+	mww 0x43f04a00 0x0
+	mww 0x43f04b00 0x0
+	mww 0x43f04c00 0x0
+
+	# Configure M3IF registers
+	# M3IF Control Register (M3IFCTL) for MX25
+	# MRRP[0] = LCDC           on priority list (1 << 0)  = 0x00000001
+	# MRRP[1] = MAX1       not on priority list (0 << 1)  = 0x00000000
+	# MRRP[2] = MAX0       not on priority list (0 << 2)  = 0x00000000
+	# MRRP[3] = USB HOST   not on priority list (0 << 3)  = 0x00000000
+	# MRRP[4] = SDMA       not on priority list (0 << 4)  = 0x00000000
+	# MRRP[5] = SD/ATA/FEC not on priority list (0 << 5)  = 0x00000000
+	# MRRP[6] = SCMFBC     not on priority list (0 << 6)  = 0x00000000
+	# MRRP[7] = CSI        not on priority list (0 << 7)  = 0x00000000
+	#                                                       ----------
+	#                                                       0x00000001
+	mww 0xb8003000 0x00000001
+
+	#-------------------------------------------------------------------------
+	# configure ARM CLK
+	#-------------------------------------------------------------------------
+
+	# Set the Clock CTL (HRM p. 355)
+	mww 0x53F80008 0x20034000
+
+	# Setup Clock Gating CTL 0-2 (HRM p. 357)
+	mww 0x53F8000C 0x1fffffff
+	mww 0x53F80010 0xffffffff
+	mww 0x53F80014 0x000fdfff
+
+	#-------------------------------------------------------------------------
+	# SDRAM initialization
+	#-------------------------------------------------------------------------
+
+	# set to 3.3v SDRAM
+	mww 0x43FAC454 0x00000800
+
+	# reset (set up ESDMISC)
+	mww 0xB8001010 0x00000002
+
+	# Setup for SDRAM Bank 0
+	#-------------------------------------------------------------------------
+
+	# Write ESDCFG0
+	mww 0xB8001004 0x00095728
+
+	# CTL SMode = Precharge command
+	mww 0xB8001000 0x92116480
+	mww 0x80000400 0x00000000
+
+	# CTL SMode = Auto Refresh command
+	mww 0xB8001000 0xA2116480
+	mww 0x80000000 0x0
+	mww 0x80000000 0x0
+	mww 0x80000000 0x0
+	mww 0x80000000 0x0
+	mww 0x80000000 0x0
+	mww 0x80000000 0x0
+	mww 0x80000000 0x0
+	mww 0x80000000 0x0
+
+	# CTL SMode = Load Mode Register command
+	mww 0xB8001000 0xB2116480
+	mwb 0x80000033 0x00
+
+	# CTL SMode = normal
+	mww 0xB8001000 0x82116480
+
+	# Setup for SDRAM Bank 1
+	#-------------------------------------------------------------------------
+
+	# Write ESDCFG1
+	mww 0xB800100C 0x00095728
+
+	# CTL SMode = Precharge command
+	mww 0xB8001008 0x92116480
+	mww 0x90000400 0x00000000
+
+	# CTL SMode = Auto Refresh command
+	mww 0xB8001008 0xA2116480
+	mww 0x90000000 0x00000000
+	mww 0x90000000 0x00000000
+	mww 0x90000000 0x00000000
+	mww 0x90000000 0x00000000
+	mww 0x90000000 0x00000000
+	mww 0x90000000 0x00000000
+	mww 0x90000000 0x00000000
+	mww 0x90000000 0x00000000
+
+	# CTL SMode = Load Mode Register command
+	mww 0xB8001008 0xB2116480
+	mwb 0x90000033 0x00
+
+	# CTL SMode = normal
+	mww 0xB8001008 0x82116480
+
+	# GPIO configuration
+	#-------------------------------------------------------------------------
+
+	mww 0x43FAC02C 0x00000015
+	mww 0x53FD0000 0x01000000
+	mww 0x53FD0004 0x00000080
+}