arm: mvebu: Add SolidRun ClearFog Armada 38x initial support

This patch adds basic support for the SolidRun ClearFog Armada 38x based
board to mainline U-Boot. Supported interfaces / devices are:
- DDR3
- UART
- MMC
- Ethernet port 0 (connected to dedicated PHY)
- I2C

The included DT source was taken from Russell King's ftp server:
http://www.home.arm.linux.org.uk/~rmk/clearfog/

With only minor modifications, like the addition of some aliases and the
"u-boot,dm-pre-reloc" property.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Rabeeh Khoury <rabeeh@solid-run.com>
Cc: Luka Perkov <luka.perkov@sartura.hr>

6 files changed, 211 insertions, 0 deletions

diff --git a/board/solidrun/clearfog/Kconfig b/board/solidrun/clearfog/Kconfig
new file mode 100644
index 0000000000..cdf8938bd1
--- /dev/null
+++ b/board/solidrun/clearfog/Kconfig
@@ -0,0 +1,12 @@
+if TARGET_CLEARFOG
+
+config SYS_BOARD
+	default "clearfog"
+
+config SYS_VENDOR
+	default "solidrun"
+
+config SYS_CONFIG_NAME
+	default "clearfog"
+
+endif
diff --git a/board/solidrun/clearfog/MAINTAINERS b/board/solidrun/clearfog/MAINTAINERS
new file mode 100644
index 0000000000..298e5011c7
--- /dev/null
+++ b/board/solidrun/clearfog/MAINTAINERS
@@ -0,0 +1,6 @@
+CLEARFOG BOARD
+M:	Stefan Roese <sr@denx.de>
+S:	Maintained
+F:	board/soldrun/clearfog/
+F:	include/configs/clearfog.h
+F:	configs/clearfog_defconfig
diff --git a/board/solidrun/clearfog/Makefile b/board/solidrun/clearfog/Makefile
new file mode 100644
index 0000000000..1920d6bf6d
--- /dev/null
+++ b/board/solidrun/clearfog/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2015 Stefan Roese <sr@denx.de>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= clearfog.o
diff --git a/board/solidrun/clearfog/README b/board/solidrun/clearfog/README
new file mode 100644
index 0000000000..2cfa5bfc86
--- /dev/null
+++ b/board/solidrun/clearfog/README
@@ -0,0 +1,18 @@
+Update from original Marvell U-Boot to mainline U-Boot:
+-------------------------------------------------------
+
+Generate the U-Boot image with these commands:
+
+$ make clearfog_defconfig
+$ make
+
+The resulting image including the SPL binary with the
+full DDR setup is "u-boot-spl.kwb".
+
+Now all you need to do is copy this image on a SD card.
+For example with this command:
+
+$ sudo dd if=u-boot-spl.kwb of=/dev/sdX bs=512 seek=1
+
+Please use the correct device node for your setup instead
+of "/dev/sdX" here!
diff --git a/board/solidrun/clearfog/clearfog.c b/board/solidrun/clearfog/clearfog.c
new file mode 100644
index 0000000000..2773f5957e
--- /dev/null
+++ b/board/solidrun/clearfog/clearfog.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2015 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+
+#include "../drivers/ddr/marvell/a38x/ddr3_a38x_topology.h"
+#include <../serdes/a38x/high_speed_env_spec.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define ETH_PHY_CTRL_REG		0
+#define ETH_PHY_CTRL_POWER_DOWN_BIT	11
+#define ETH_PHY_CTRL_POWER_DOWN_MASK	(1 << ETH_PHY_CTRL_POWER_DOWN_BIT)
+
+/*
+ * Those values and defines are taken from the Marvell U-Boot version
+ * "u-boot-2013.01-15t1-clearfog"
+ */
+#define BOARD_GPP_OUT_ENA_LOW	0xffffffff
+#define BOARD_GPP_OUT_ENA_MID	0xffffffff
+
+#define BOARD_GPP_OUT_VAL_LOW	0x0
+#define BOARD_GPP_OUT_VAL_MID	0x0
+#define BOARD_GPP_POL_LOW	0x0
+#define BOARD_GPP_POL_MID	0x0
+
+/* IO expander on Marvell GP board includes e.g. fan enabling */
+struct marvell_io_exp {
+	u8 chip;
+	u8 addr;
+	u8 val;
+};
+
+static struct marvell_io_exp io_exp[] = {
+	{ 0x20, 2, 0x40 },	/* Deassert both mini pcie reset signals */
+	{ 0x20, 6, 0xf9 },
+	{ 0x20, 2, 0x46 },	/* rst signals and ena USB3 current limiter */
+	{ 0x20, 6, 0xb9 },
+	{ 0x20, 3, 0x00 },	/* Set SFP_TX_DIS to zero */
+	{ 0x20, 7, 0xbf },	/* Drive SFP_TX_DIS to zero */
+};
+
+static struct serdes_map board_serdes_map[] = {
+	{SATA0, SERDES_SPEED_3_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+	{SGMII1, SERDES_SPEED_1_25_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+	{PEX1, SERDES_SPEED_5_GBPS, PEX_ROOT_COMPLEX_X1, 0, 0},
+	{USB3_HOST1, SERDES_SPEED_5_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+	{PEX2, SERDES_SPEED_5_GBPS, PEX_ROOT_COMPLEX_X1, 0, 0},
+	{SGMII2, SERDES_SPEED_1_25_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+};
+
+int hws_board_topology_load(struct serdes_map **serdes_map_array, u8 *count)
+{
+	*serdes_map_array = board_serdes_map;
+	*count = ARRAY_SIZE(board_serdes_map);
+	return 0;
+}
+
+/*
+ * Define the DDR layout / topology here in the board file. This will
+ * be used by the DDR3 init code in the SPL U-Boot version to configure
+ * the DDR3 controller.
+ */
+static struct hws_topology_map board_topology_map = {
+	0x1, /* active interfaces */
+	/* cs_mask, mirror, dqs_swap, ck_swap X PUPs */
+	{ { { {0x1, 0, 0, 0},
+	      {0x1, 0, 0, 0},
+	      {0x1, 0, 0, 0},
+	      {0x1, 0, 0, 0},
+	      {0x1, 0, 0, 0} },
+	    SPEED_BIN_DDR_1600K,	/* speed_bin */
+	    BUS_WIDTH_16,		/* memory_width */
+	    MEM_4G,			/* mem_size */
+	    DDR_FREQ_800,		/* frequency */
+	    0, 0,			/* cas_l cas_wl */
+	    HWS_TEMP_LOW} },		/* temperature */
+	5,				/* Num Of Bus Per Interface*/
+	BUS_MASK_32BIT			/* Busses mask */
+};
+
+struct hws_topology_map *ddr3_get_topology_map(void)
+{
+	/* Return the board topology as defined in the board code */
+	return &board_topology_map;
+}
+
+int board_early_init_f(void)
+{
+	/* Configure MPP */
+	writel(0x11111111, MVEBU_MPP_BASE + 0x00);
+	writel(0x11111111, MVEBU_MPP_BASE + 0x04);
+	writel(0x10400011, MVEBU_MPP_BASE + 0x08);
+	writel(0x22043333, MVEBU_MPP_BASE + 0x0c);
+	writel(0x44400002, MVEBU_MPP_BASE + 0x10);
+	writel(0x41144004, MVEBU_MPP_BASE + 0x14);
+	writel(0x40333333, MVEBU_MPP_BASE + 0x18);
+	writel(0x00004444, MVEBU_MPP_BASE + 0x1c);
+
+	/* Set GPP Out value */
+	writel(BOARD_GPP_OUT_VAL_LOW, MVEBU_GPIO0_BASE + 0x00);
+	writel(BOARD_GPP_OUT_VAL_MID, MVEBU_GPIO1_BASE + 0x00);
+
+	/* Set GPP Polarity */
+	writel(BOARD_GPP_POL_LOW, MVEBU_GPIO0_BASE + 0x0c);
+	writel(BOARD_GPP_POL_MID, MVEBU_GPIO1_BASE + 0x0c);
+
+	/* Set GPP Out Enable */
+	writel(BOARD_GPP_OUT_ENA_LOW, MVEBU_GPIO0_BASE + 0x04);
+	writel(BOARD_GPP_OUT_ENA_MID, MVEBU_GPIO1_BASE + 0x04);
+
+	return 0;
+}
+
+int board_init(void)
+{
+	int i;
+
+	/* Address of boot parameters */
+	gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
+
+	/* Toggle GPIO41 to reset onboard switch and phy */
+	clrbits_le32(MVEBU_GPIO1_BASE + 0x0, BIT(9));
+	clrbits_le32(MVEBU_GPIO1_BASE + 0x4, BIT(9));
+	mdelay(1);
+	setbits_le32(MVEBU_GPIO1_BASE + 0x0, BIT(9));
+	mdelay(10);
+
+	/* Init I2C IO expanders */
+	for (i = 0; i < ARRAY_SIZE(io_exp); i++)
+		i2c_write(io_exp[i].chip, io_exp[i].addr, 1, &io_exp[i].val, 1);
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts("Board: SolidRun ClearFog\n");
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	cpu_eth_init(bis); /* Built in controller(s) come first */
+	return pci_eth_init(bis);
+}
diff --git a/board/solidrun/clearfog/kwbimage.cfg b/board/solidrun/clearfog/kwbimage.cfg
new file mode 100644
index 0000000000..c650c2c65e
--- /dev/null
+++ b/board/solidrun/clearfog/kwbimage.cfg
@@ -0,0 +1,12 @@
+#
+# Copyright (C) 2015 Stefan Roese <sr@denx.de>
+#
+
+# Armada XP uses version 1 image format
+VERSION		1
+
+# Boot Media configurations
+BOOT_FROM	sdio
+
+# Binary Header (bin_hdr) with DDR3 training code
+BINARY spl/u-boot-spl-dtb.bin 0000005b 00000068