riscv-openocd/tcl/board/tx25_stk5.cfg

# SPDX-License-Identifier: GPL-2.0-or-later

# -------------------------------------------------------------------------
# KaRo TX25 CPU Module on a StarterkitV base board
# http://www.karo-electronics.com/tx25.html
# -------------------------------------------------------------------------


source [find 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
}