powerpc/T4240EMU: Add T4240EMU target

Add emulator support for T4240. Emulator has limited peripherals and
interfaces. Difference between emulator and T4240QDS includes:
	ECC for DDR is disabled due the procedure to load images
	No board FPGA (QIXIS)
	NOR flash has 32-bit port for higher loading speed
	IFC and I2C timing don't really matter, so set them fast
	No ethernet

Signed-off-by: York Sun <yorksun@freescale.com>

1 files changed, 122 insertions, 0 deletions

diff --git a/board/freescale/t4qds/ddr.h b/board/freescale/t4qds/ddr.h
new file mode 100644
index 0000000..cde0785
--- /dev/null
+++ b/board/freescale/t4qds/ddr.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __DDR_H__
+#define __DDR_H__
+struct board_specific_parameters {
+	u32 n_ranks;
+	u32 datarate_mhz_high;
+	u32 rank_gb;
+	u32 clk_adjust;
+	u32 wrlvl_start;
+	u32 wrlvl_ctl_2;
+	u32 wrlvl_ctl_3;
+	u32 cpo;
+	u32 write_data_delay;
+	u32 force_2T;
+};
+
+/*
+ * These tables contain all valid speeds we want to override with board
+ * specific parameters. datarate_mhz_high values need to be in ascending order
+ * for each n_ranks group.
+ */
+
+#ifdef CONFIG_T4240QDS
+static const struct board_specific_parameters udimm0[] = {
+	/*
+	 * memory controller 0
+	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl | cpo  |wrdata|2T
+	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3  |      |delay |
+	 */
+	{2,  1350, 4, 4,     8, 0x0809090b, 0x0c0c0d0a,   0xff,    2,  0},
+	{2,  1350, 0, 5,     7, 0x0709090b, 0x0c0c0d09,   0xff,    2,  0},
+	{2,  1666, 4, 4,     8, 0x080a0a0d, 0x0d10100b,   0xff,    2,  0},
+	{2,  1666, 0, 5,     7, 0x080a0a0c, 0x0d0d0e0a,   0xff,    2,  0},
+	{2,  1900, 0, 4,     8, 0x090a0b0e, 0x0f11120c,   0xff,    2,  0},
+	{2,  2140, 0, 4,     8, 0x090a0b0e, 0x0f11120c,   0xff,    2,  0},
+	{1,  1350, 0, 5,     8, 0x0809090b, 0x0c0c0d0a,   0xff,    2,  0},
+	{1,  1700, 0, 5,     8, 0x080a0a0c, 0x0c0d0e0a,   0xff,    2,  0},
+	{1,  1900, 0, 4,     8, 0x080a0a0c, 0x0e0e0f0a,   0xff,    2,  0},
+	{1,  2140, 0, 4,     8, 0x090a0b0c, 0x0e0f100b,   0xff,    2,  0},
+	{}
+};
+
+static const struct board_specific_parameters rdimm0[] = {
+	/*
+	 * memory controller 0
+	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl | cpo  |wrdata|2T
+	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3  |      |delay |
+	 */
+	{4,  1350, 0, 5,     9, 0x08070605, 0x07080805,   0xff,    2,  0},
+	{4,  1666, 0, 5,     8, 0x08070605, 0x07080805,   0xff,    2,  0},
+	{4,  2140, 0, 5,     8, 0x08070605, 0x07081805,   0xff,    2,  0},
+	{2,  1350, 0, 5,     7, 0x0809090b, 0x0c0c0d09,   0xff,    2,  0},
+	{2,  1666, 0, 5,     8, 0x080a0a0c, 0x0c0d0e0a,   0xff,    2,  0},
+	{2,  2140, 0, 5,     8, 0x090a0b0c, 0x0e0f100b,   0xff,    2,  0},
+	{1,  1350, 0, 5,     8, 0x0809090b, 0x0c0c0d0a,   0xff,    2,  0},
+	{1,  1700, 0, 5,     8, 0x080a0a0c, 0x0c0d0e0a,   0xff,    2,  0},
+	{1,  1900, 0, 4,     8, 0x080a0a0c, 0x0e0e0f0a,   0xff,    2,  0},
+	{1,  2140, 0, 4,     8, 0x090a0b0c, 0x0e0f100b,   0xff,    2,  0},
+	{}
+};
+
+#else	/* CONFIG_T4240EMU */
+static const struct board_specific_parameters udimm0[] = {
+	/*
+	 * memory controller 0
+	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl | cpo  |wrdata|2T
+	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3  |      |delay |
+	 */
+	{2,  2140, 0, 4,     8, 0x0, 0x0,   0xff,    2,  0},
+	{1,  2140, 0, 4,     8, 0x0, 0x0,   0xff,    2,  0},
+	{}
+};
+
+static const struct board_specific_parameters rdimm0[] = {
+	/*
+	 * memory controller 0
+	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl | cpo  |wrdata|2T
+	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3  |      |delay |
+	 */
+	{4,  2140, 0, 5,     8, 0x0, 0x0,   0xff,    2,  0},
+	{2,  2140, 0, 5,     8, 0x0, 0x0,   0xff,    2,  0},
+	{1,  2140, 0, 4,     8, 0x0, 0x0,   0xff,    2,  0},
+	{}
+};
+#endif	/* CONFIG_T4240EMU */
+
+/*
+ * The three slots have slightly different timing. The center values are good
+ * for all slots. We use identical speed tables for them. In future use, if
+ * DIMMs require separated tables, make more entries as needed.
+ */
+static const struct board_specific_parameters *udimms[] = {
+	udimm0,
+};
+
+/*
+ * The three slots have slightly different timing. See comments above.
+ */
+static const struct board_specific_parameters *rdimms[] = {
+	rdimm0,
+};
+
+
+#endif