topic: Add support for i.MX28EVK

Added the file imx28.cfg to the target directory
Added the file imx28evk.cfg to the board directory

Change-Id: I02a74a03f3773892f830d13660ffdded34f3261d
Signed-off-by: James Robinson <jmr13031@gmail.com>
Reviewed-on: http://openocd.zylin.com/428
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

2 files changed, 206 insertions, 0 deletions

diff --git a/tcl/board/imx28evk.cfg b/tcl/board/imx28evk.cfg
new file mode 100644
index 00000000..a85c2ca6
--- /dev/null
+++ b/tcl/board/imx28evk.cfg
@@ -0,0 +1,168 @@
+# The IMX28EVK eval board has a IMX28 chip
+# Tested on SCH-26241 Rev D board with Olimex ARM-USB-OCD
+# Date:	201-02-01
+# Authors: James Robinson & Fabio Estevam
+
+source [find target/imx28.cfg]
+$_TARGETNAME configure -event gdb-attach { imx28evk_init }
+$_TARGETNAME configure -event reset-init { imx28evk_init }
+
+proc imx28evk_init { } {
+
+	halt
+
+	#****************************
+	# VDDD setting
+	#****************************
+	# set VDDD =1.55V =(0.8v + TRIG x 0.025v), TRIG=0x1e
+	mww 0x80044010 0x0003F503
+	mww 0x80044040 0x0002041E
+
+	#****************************
+	# CLOCK set up
+	#****************************
+	# Power up PLL0 HW_CLKCTRL_PLL0CTRL0
+	mww 0x80040000 0x00020000
+	# Set up fractional dividers for CPU and EMI - HW_CLKCTRL_FRAC0
+	# EMI - first set DIV_EMI to div-by-2 before programming frac divider
+	mww 0x800400F0 0x80000002
+
+
+	# CPU: CPUFRAC=19 480*18/29=454.7MHz, EMI: EMIFRAC=22, (480/2)*18/22=196.4MHz
+	mww 0x800401B0 0x92921613
+	# Clear the bypass bits for CPU and EMI clocks in HW_CLKCTRL_CLKSEQ_CLR
+	mww 0x800401D8 0x00040080
+	# HCLK = 227MHz,HW_CLKCTRL_HBUS DIV =0x2
+	mww 0x80040060 0x00000002
+
+	#****************************
+	# POWER up DCDD_VDDA (DDR2)
+	#****************************
+	# Now set the voltage level to 1.8V HW_POWER_VDDACTRL bits TRC=0xC
+	mww 0x80044050 0x0000270C
+
+	#****************************
+	# DDR2 DCDD_VDDA
+	#****************************
+	# First set up pin muxing and drive strength
+	# Ungate module clock and bring out of reset HW_PINCTRL_CTRL_CLR
+	mww 0x80018008 0xC0000000
+
+	#****************************
+	# EMI PAD setting
+	#****************************
+	# Set up drive strength for EMI pins
+	mww 0x80019B80 0x00030000
+	#IOMUXC_SW_PAD_CTL_GRP_CTLDS
+
+	# Set up pin muxing for EMI, HW_PINCTRL_MUXSEL10, 11, 12, 13
+	mww 0x800181A8 0xFFFFFFFF
+	mww 0x800181B8 0xFFFFFFFF
+	mww 0x800181C8 0xFFFFFFFF
+	mww 0x800181D8 0xFFFFFFFF
+
+	#** Ungate EMI clock in CCM
+	mww 0x800400F0 0x00000002
+
+	#============================================================================
+	# DDR Controller Registers
+	#============================================================================
+	# Manufacturer:    Elpida
+	# Device Part Number:    EDE1116AEBG
+	# Clock Freq.:     200MHz
+	# Density:         1Gb
+	# Chip Selects:    1
+	# Number of Banks: 8
+	# Row address:     13
+	# Column address:  10
+	#============================================================================
+	mww 0x800E0000 0x00000000
+	mww 0x800E0040 0x00000000
+	mww 0x800E0054 0x00000000
+	mww 0x800E0058 0x00000000
+	mww 0x800E005C 0x00000000
+	mww 0x800E0060 0x00000000
+	mww 0x800E0064 0x00000000
+	mww 0x800E0068 0x00010101
+	mww 0x800E006C 0x01010101
+	mww 0x800E0070 0x000f0f01
+	mww 0x800E0074 0x0102020A
+	mww 0x800E007C 0x00010101
+	mww 0x800E0080 0x00000100
+	mww 0x800E0084 0x00000100
+	mww 0x800E0088 0x00000000
+	mww 0x800E008C 0x00000002
+	mww 0x800E0090 0x01010000
+	mww 0x800E0094 0x07080403
+	mww 0x800E0098 0x06005003
+	mww 0x800E009C 0x0A0000C8
+	mww 0x800E00A0 0x02009C40
+	mww 0x800E00A4 0x0002030C
+	mww 0x800E00A8 0x0036B009
+	mww 0x800E00AC 0x031A0612
+	mww 0x800E00B0 0x02030202
+	mww 0x800E00B4 0x00C8001C
+	mww 0x800E00C0 0x00011900
+	mww 0x800E00C4 0xffff0303
+	mww 0x800E00C8 0x00012100
+	mww 0x800E00CC 0xffff0303
+	mww 0x800E00D0 0x00012100
+	mww 0x800E00D4 0xffff0303
+	mww 0x800E00D8 0x00012100
+	mww 0x800E00DC 0xffff0303
+	mww 0x800E00E0 0x00000003
+	mww 0x800E00E8 0x00000000
+	mww 0x800E0108 0x00000612
+	mww 0x800E010C 0x01000f02
+	mww 0x800E0114 0x00000200
+	mww 0x800E0118 0x00020007
+	mww 0x800E011C 0xf4004a27
+	mww 0x800E0120 0xf4004a27
+	mww 0x800E012C 0x07400300
+	mww 0x800E0130 0x07400300
+	mww 0x800E013C 0x00000005
+	mww 0x800E0140 0x00000000
+	mww 0x800E0144 0x00000000
+	mww 0x800E0148 0x01000000
+	mww 0x800E014C 0x01020408
+	mww 0x800E0150 0x08040201
+	mww 0x800E0154 0x000f1133
+	mww 0x800E015C 0x00001f04
+	mww 0x800E0160 0x00001f04
+	mww 0x800E016C 0x00001f04
+	mww 0x800E0170 0x00001f04
+	mww 0x800E0288 0x00010000
+	mww 0x800E028C 0x00030404
+	mww 0x800E0290 0x00000003
+	mww 0x800E02AC 0x01010000
+	mww 0x800E02B0 0x01000000
+	mww 0x800E02B4 0x03030000
+	mww 0x800E02B8 0x00010303
+	mww 0x800E02BC 0x01020202
+	mww 0x800E02C0 0x00000000
+	mww 0x800E02C4 0x02030303
+	mww 0x800E02C8 0x21002103
+	mww 0x800E02CC 0x00061200
+	mww 0x800E02D0 0x06120612
+	mww 0x800E02D4 0x04420442
+	# Mode register 0 for CS1 and CS0, ok to program CS1 even if not used
+	mww 0x800E02D8 0x00000000
+	# Mode register 0 for CS2 and CS3, not supported in this processor
+	mww 0x800E02DC 0x00040004
+	# Mode register 1 for CS1 and CS0, ok to program CS1 even if not used
+	mww 0x800E02E0 0x00000000
+	# Mode register 1 for CS2 and CS3, not supported in this processor
+	mww 0x800E02E4 0x00000000
+	# Mode register 2 for CS1 and CS0, ok to program CS1 even if not used
+	mww 0x800E02E8 0x00000000
+	# Mode register 2 for CS2 and CS3, not supported in this processor
+	mww 0x800E02EC 0x00000000
+	# Mode register 3 for CS1 and CS0, ok to program CS1 even if not used
+	mww 0x800E02F0 0x00000000
+	# Mode register 3 for CS2 and CS3, not supported in this processor
+	mww 0x800E02F4 0xffffffff
+
+	#**  start controller **#
+	mww 0x800E0040 0x00000001
+	# bit[0]: start
+}
diff --git a/tcl/target/imx28.cfg b/tcl/target/imx28.cfg
new file mode 100644
index 00000000..0cbedce4
--- /dev/null
+++ b/tcl/target/imx28.cfg
@@ -0,0 +1,38 @@
+# i.MX28 config file.
+# based off of the imx21.cfg file.
+
+reset_config trst_and_srst
+
+#jtag nTRST and nSRST delay
+adapter_nsrst_delay 100
+jtag_ntrst_delay 100
+
+if { [info exists CHIPNAME] } {
+   set  _CHIPNAME $CHIPNAME
+} else {
+   set  _CHIPNAME imx28
+}
+
+if { [info exists ENDIAN] } {
+   set  _ENDIAN $ENDIAN
+} else {
+   set  _ENDIAN little
+}
+
+
+# Note above there is 1 tap
+
+# The CPU tap
+if { [info exists CPUTAPID ] } {
+   set _CPUTAPID $CPUTAPID
+} else {
+   set _CPUTAPID 0x079264f3
+}
+jtag newtap $_CHIPNAME cpu  -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
+
+
+# Create the GDB Target.
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME arm926ejs -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm926ejs
+
+arm7_9 dcc_downloads enable