arm: add support for the suen3 board from keymile

Add support for the ARM part of the mgcoge2, named suen3.
This board is based on the Marvell Kirkwood (88F6281) SoC.
As there come more board variants, common config options
are collected in include/configs/km_arm.h. Also, this board
use common code for all keymile boards, which is stored in
board/keymile/common/common.c

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Heiko Schocher <hs@denx.de>

1 files changed, 324 insertions, 0 deletions

diff --git a/board/keymile/km_arm/km_arm.c b/board/keymile/km_arm/km_arm.c
new file mode 100644
index 0000000000..53cf474767
--- /dev/null
+++ b/board/keymile/km_arm/km_arm.c
@@ -0,0 +1,324 @@
+/*
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ * Prafulla Wadaskar <prafulla@marvell.com>
+ *
+ * (C) Copyright 2009
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * (C) Copyright 2010
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <nand.h>
+#include <netdev.h>
+#include <miiphy.h>
+#include <asm/io.h>
+#include <asm/arch/kirkwood.h>
+#include <asm/arch/mpp.h>
+
+#include "../common/common.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int	io_dev;
+extern I2C_MUX_DEVICE *i2c_mux_ident_muxstring (uchar *buf);
+
+/* Multi-Purpose Pins Functionality configuration */
+u32 kwmpp_config[] = {
+	MPP0_NF_IO2,
+	MPP1_NF_IO3,
+	MPP2_NF_IO4,
+	MPP3_NF_IO5,
+	MPP4_NF_IO6,
+	MPP5_NF_IO7,
+	MPP6_SYSRST_OUTn,
+	MPP7_PEX_RST_OUTn,
+#if defined(CONFIG_SOFT_I2C)
+	MPP8_GPIO,		/* SDA */
+	MPP9_GPIO,		/* SCL */
+#endif
+#if defined(CONFIG_HARD_I2C)
+	MPP8_TW_SDA,
+	MPP9_TW_SCK,
+#endif
+	MPP10_UART0_TXD,
+	MPP11_UART0_RXD,
+	MPP12_GPO,		/* Reserved */
+	MPP13_UART1_TXD,
+	MPP14_UART1_RXD,
+	MPP15_GPIO,		/* Not used */
+	MPP16_GPIO,		/* Not used */
+	MPP17_GPIO,		/* Reserved */
+	MPP18_NF_IO0,
+	MPP19_NF_IO1,
+	MPP20_GPIO,
+	MPP21_GPIO,
+	MPP22_GPIO,
+	MPP23_GPIO,
+	MPP24_GPIO,
+	MPP25_GPIO,
+	MPP26_GPIO,
+	MPP27_GPIO,
+	MPP28_GPIO,
+	MPP29_GPIO,
+	MPP30_GPIO,
+	MPP31_GPIO,
+	MPP32_GPIO,
+	MPP33_GPIO,
+	MPP34_GPIO,		/* CDL1 (input) */
+	MPP35_GPIO,		/* CDL2 (input) */
+	MPP36_GPIO,		/* MAIN_IRQ (input) */
+	MPP37_GPIO,		/* BOARD_LED */
+	MPP38_GPIO,		/* Piggy3 LED[1] */
+	MPP39_GPIO,		/* Piggy3 LED[2] */
+	MPP40_GPIO,		/* Piggy3 LED[3] */
+	MPP41_GPIO,		/* Piggy3 LED[4] */
+	MPP42_GPIO,		/* Piggy3 LED[5] */
+	MPP43_GPIO,		/* Piggy3 LED[6] */
+	MPP44_GPIO,		/* Piggy3 LED[7] */
+	MPP45_GPIO,		/* Piggy3 LED[8] */
+	MPP46_GPIO,		/* Reserved */
+	MPP47_GPIO,		/* Reserved */
+	MPP48_GPIO,		/* Reserved */
+	MPP49_GPIO,		/* SW_INTOUTn */
+	0
+};
+
+int ethernet_present(void)
+{
+	uchar	buf;
+	int	ret = 0;
+
+	if (i2c_read(0x10, 2, 1, &buf, 1) != 0) {
+		printf ("%s: Error reading Boco\n", __FUNCTION__);
+		return -1;
+	}
+	if ((buf & 0x40) == 0x40) {
+		ret = 1;
+	}
+	return ret;
+}
+
+int misc_init_r(void)
+{
+	I2C_MUX_DEVICE	*i2cdev;
+	char *str;
+	int mach_type;
+
+	/* add I2C Bus for I/O Expander */
+	i2cdev = i2c_mux_ident_muxstring((uchar *)"pca9554a:70:a");
+	io_dev = i2cdev->busid;
+	puts("Piggy:");
+	if (ethernet_present() == 0)
+		puts (" not");
+	puts(" present\n");
+
+	str = getenv("mach_type");
+	if (str != NULL) {
+		mach_type = simple_strtoul(str, NULL, 10);
+		printf("Overwriting MACH_TYPE with %d!!!\n", mach_type);
+		gd->bd->bi_arch_number = mach_type;
+	}
+	return 0;
+}
+
+int board_init(void)
+{
+	u32 tmp;
+
+	kirkwood_mpp_conf(kwmpp_config);
+
+	/*
+	 * The FLASH_GPIO_PIN switches between using a
+	 * NAND or a SPI FLASH. Set this pin on start
+	 * to NAND mode.
+	 */
+	tmp = readl(KW_GPIO0_BASE);
+	writel(tmp | FLASH_GPIO_PIN , KW_GPIO0_BASE);
+	tmp = readl(KW_GPIO0_BASE + 4);
+	writel(tmp & (~FLASH_GPIO_PIN) , KW_GPIO0_BASE + 4);
+	printf("KM: setting NAND mode\n");
+
+	/*
+	 * arch number of board
+	 */
+	gd->bd->bi_arch_number = MACH_TYPE_SUEN3;
+
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = kw_sdram_bar(0) + 0x100;
+
+#if defined(CONFIG_SOFT_I2C)
+	/* init the GPIO for I2C Bitbang driver */
+	kw_gpio_set_valid(SUEN3_SDA_PIN, 1);
+	kw_gpio_set_valid(SUEN3_SCL_PIN, 1);
+	kw_gpio_direction_output(SUEN3_SDA_PIN, 0);
+	kw_gpio_direction_output(SUEN3_SCL_PIN, 0);
+#endif
+#if defined(CONFIG_SYS_EEPROM_WREN)
+	kw_gpio_set_valid(SUEN3_ENV_WP, 38);
+	kw_gpio_direction_output(SUEN3_ENV_WP, 1);
+#endif
+	return 0;
+}
+
+#if defined(CONFIG_CMD_SF)
+int do_spi_toggle(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	u32 tmp;
+	if (argc < 2) {
+		cmd_usage(cmdtp);
+		return 1;
+	}
+
+	if ((strcmp(argv[1], "off") == 0)) {
+		printf("SPI FLASH disabled, NAND enabled\n");
+		/* Multi-Purpose Pins Functionality configuration */
+		kwmpp_config[0] = MPP0_NF_IO2;
+		kwmpp_config[1] = MPP1_NF_IO3;
+		kwmpp_config[2] = MPP2_NF_IO4;
+		kwmpp_config[3] = MPP3_NF_IO5;
+
+		kirkwood_mpp_conf(kwmpp_config);
+		tmp = readl(KW_GPIO0_BASE);
+		writel(tmp | FLASH_GPIO_PIN , KW_GPIO0_BASE);
+	} else if ((strcmp(argv[1], "on") == 0)) {
+		printf("SPI FLASH enabled, NAND disabled\n");
+		/* Multi-Purpose Pins Functionality configuration */
+		kwmpp_config[0] = MPP0_SPI_SCn;
+		kwmpp_config[1] = MPP1_SPI_MOSI;
+		kwmpp_config[2] = MPP2_SPI_SCK;
+		kwmpp_config[3] = MPP3_SPI_MISO;
+
+		kirkwood_mpp_conf(kwmpp_config);
+		tmp = readl(KW_GPIO0_BASE);
+		writel(tmp & (~FLASH_GPIO_PIN) , KW_GPIO0_BASE);
+	} else {
+		cmd_usage(cmdtp);
+		return 1;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	spitoggle,	2,	0,	do_spi_toggle,
+	"En-/disable SPI FLASH access",
+	"<on|off> - Enable (on) or disable (off) SPI FLASH access\n"
+	);
+#endif
+
+int dram_init(void)
+{
+	int i;
+
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		gd->bd->bi_dram[i].start = kw_sdram_bar(i);
+		gd->bd->bi_dram[i].size = get_ram_size((long *)kw_sdram_bar(i),
+						       kw_sdram_bs(i));
+	}
+	return 0;
+}
+
+/* Configure and enable MV88E1118 PHY */
+void reset_phy(void)
+{
+	char *name = "egiga0";
+
+	if (miiphy_set_current_dev(name))
+		return;
+
+	/* reset the phy */
+	miiphy_reset(name, CONFIG_PHY_BASE_ADR);
+}
+
+#if defined(CONFIG_HUSH_INIT_VAR)
+int hush_init_var (void)
+{
+	ivm_read_eeprom ();
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_BOOTCOUNT_LIMIT)
+void bootcount_store (ulong a)
+{
+	volatile ulong *save_addr;
+	volatile ulong size = 0;
+	int i;
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		size += gd->bd->bi_dram[i].size;
+	}
+	save_addr = (ulong*)(size - BOOTCOUNT_ADDR);
+	writel(a, save_addr);
+	writel(BOOTCOUNT_MAGIC, &save_addr[1]);
+}
+
+ulong bootcount_load (void)
+{
+	volatile ulong *save_addr;
+	volatile ulong size = 0;
+	int i;
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		size += gd->bd->bi_dram[i].size;
+	}
+	save_addr = (ulong*)(size - BOOTCOUNT_ADDR);
+	if (readl(&save_addr[1]) != BOOTCOUNT_MAGIC)
+		return 0;
+	else
+		return readl(save_addr);
+}
+#endif
+
+#if defined(CONFIG_SOFT_I2C)
+void set_sda (int state)
+{
+	I2C_ACTIVE;
+	I2C_SDA(state);
+}
+
+void set_scl (int state)
+{
+	I2C_SCL(state);
+}
+
+int get_sda (void)
+{
+	I2C_TRISTATE;
+	return I2C_READ;
+}
+
+int get_scl (void)
+{
+	return (kw_gpio_get_value(SUEN3_SCL_PIN) ? 1 : 0);
+}
+#endif
+
+#if defined(CONFIG_SYS_EEPROM_WREN)
+int eeprom_write_enable (unsigned dev_addr, int state)
+{
+	kw_gpio_set_value(SUEN3_ENV_WP, !state);
+
+	return !kw_gpio_get_value(SUEN3_ENV_WP);
+}
+#endif