board/chiliboard: Add support for chiliBoard

chiliBoard is a development board which uses chiliSOM as its base.

Hardware specification:
 * chiliSOM (TI AM335x, DRAM, NAND)
 * Ethernet PHY (id 0)
 * USB host (usb1)
 * MicroSD slot (mmc0)

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

5 files changed, 266 insertions, 0 deletions

diff --git a/board/grinn/chiliboard/Kconfig b/board/grinn/chiliboard/Kconfig
new file mode 100644
index 0000000..20056e8
--- /dev/null
+++ b/board/grinn/chiliboard/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_CHILIBOARD
+
+config SYS_BOARD
+	default "chiliboard"
+
+config SYS_VENDOR
+	default "grinn"
+
+config SYS_CONFIG_NAME
+	default "chiliboard"
+
+config SYS_SOC
+	default "am33xx"
+
+endif
diff --git a/board/grinn/chiliboard/MAINTAINERS b/board/grinn/chiliboard/MAINTAINERS
new file mode 100644
index 0000000..5eaccb2
--- /dev/null
+++ b/board/grinn/chiliboard/MAINTAINERS
@@ -0,0 +1,8 @@
+CHILIBOARD
+M:	Marcin Niestroj <m.niestroj@grinn-global.com>
+S:	Maintained
+F:	arch/arm/include/asm/arch-am33xx/chilisom.h
+F:	arch/arm/mach-omap2/am33xx/chilisom.c
+F:	board/grinn/chiliboard/
+F:	include/configs/chiliboard.h
+F:	configs/chiliboard_defconfig
diff --git a/board/grinn/chiliboard/Makefile b/board/grinn/chiliboard/Makefile
new file mode 100644
index 0000000..865968d
--- /dev/null
+++ b/board/grinn/chiliboard/Makefile
@@ -0,0 +1,6 @@
+# (C) Copyright 2017 Grinn
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y  := board.o
diff --git a/board/grinn/chiliboard/README b/board/grinn/chiliboard/README
new file mode 100644
index 0000000..cea4c1d
--- /dev/null
+++ b/board/grinn/chiliboard/README
@@ -0,0 +1,31 @@
+How to use U-Boot on Grinn's chiliBoard
+--------------------------------------
+
+- Build U-Boot for chiliBoard:
+
+$ make mrproper
+$ make chiliboard_defconfig
+$ make
+
+This will generate the SPL image called MLO and the u-boot.img.
+
+- Flash the SPL image into the micro SD card:
+
+sudo dd if=MLO of=/dev/mmcblk0 bs=128k; sync
+
+- Flash the u-boot.img image into the micro SD card:
+
+sudo dd if=u-boot.img of=/dev/mmcblk0 bs=128k seek=3; sync
+
+- Jumper settings:
+
+S2: 1 1 1 0 1 0
+
+where 0 means bottom position and 1 means top position (from the
+switch label numbers reference).
+
+- Insert the micro SD card in the board.
+
+- Connect USB cable between chiliBoard and the PC for the power and console.
+
+- U-Boot messages should come up.
diff --git a/board/grinn/chiliboard/board.c b/board/grinn/chiliboard/board.c
new file mode 100644
index 0000000..e3f82b0
--- /dev/null
+++ b/board/grinn/chiliboard/board.c
@@ -0,0 +1,206 @@
+/*
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
+ * Copyright (C) 2017, Grinn - http://grinn-global.com/
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/chilisom.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/omap.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/mmc_host_def.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/emif.h>
+#include <asm/io.h>
+#include <cpsw.h>
+#include <environment.h>
+#include <errno.h>
+#include <miiphy.h>
+#include <serial.h>
+#include <spl.h>
+#include <watchdog.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static __maybe_unused struct ctrl_dev *cdev =
+	(struct ctrl_dev *)CTRL_DEVICE_BASE;
+
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+static struct module_pin_mux uart0_pin_mux[] = {
+	{OFFSET(uart0_rxd), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* UART0_RXD */
+	{OFFSET(uart0_txd), (MODE(0) | PULLUDEN)},		/* UART0_TXD */
+	{-1},
+};
+
+static struct module_pin_mux mmc0_pin_mux[] = {
+	{OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)},	/* MMC0_DAT3 */
+	{OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)},	/* MMC0_DAT2 */
+	{OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)},	/* MMC0_DAT1 */
+	{OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)},	/* MMC0_DAT0 */
+	{OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)},	/* MMC0_CLK */
+	{OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)},	/* MMC0_CMD */
+	{-1},
+};
+
+static struct module_pin_mux rmii1_pin_mux[] = {
+	{OFFSET(mii1_crs), MODE(1) | RXACTIVE},		/* RMII1_CRS */
+	{OFFSET(mii1_rxerr), MODE(1) | RXACTIVE},	/* RMII1_RXERR */
+	{OFFSET(mii1_txen), MODE(1)},			/* RMII1_TXEN */
+	{OFFSET(mii1_txd1), MODE(1)},			/* RMII1_TXD1 */
+	{OFFSET(mii1_txd0), MODE(1)},			/* RMII1_TXD0 */
+	{OFFSET(mii1_rxd1), MODE(1) | RXACTIVE},	/* RMII1_RXD1 */
+	{OFFSET(mii1_rxd0), MODE(1) | RXACTIVE},	/* RMII1_RXD0 */
+	{OFFSET(mdio_data), MODE(0) | RXACTIVE | PULLUP_EN}, /* MDIO_DATA */
+	{OFFSET(mdio_clk), MODE(0) | PULLUP_EN},	/* MDIO_CLK */
+	{OFFSET(rmii1_refclk), MODE(0) | RXACTIVE},	/* RMII1_REFCLK */
+	{-1},
+};
+
+static void enable_board_pin_mux(void)
+{
+	chilisom_enable_pin_mux();
+
+	/* chiliboard pinmux */
+	configure_module_pin_mux(rmii1_pin_mux);
+	configure_module_pin_mux(mmc0_pin_mux);
+}
+#endif /* CONFIG_SKIP_LOWLEVEL_INIT */
+
+#ifndef CONFIG_DM_SERIAL
+struct serial_device *default_serial_console(void)
+{
+	return &eserial1_device;
+}
+#endif
+
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+void set_uart_mux_conf(void)
+{
+	configure_module_pin_mux(uart0_pin_mux);
+}
+
+void set_mux_conf_regs(void)
+{
+	enable_board_pin_mux();
+}
+
+void am33xx_spl_board_init(void)
+{
+	chilisom_spl_board_init();
+}
+#endif
+
+/*
+ * Basic board specific setup.  Pinmux has been handled already.
+ */
+int board_init(void)
+{
+#if defined(CONFIG_HW_WATCHDOG)
+	hw_watchdog_init();
+#endif
+
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+	gpmc_init();
+
+	return 0;
+}
+
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+#if !defined(CONFIG_SPL_BUILD)
+	uint8_t mac_addr[6];
+	uint32_t mac_hi, mac_lo;
+
+	/* try reading mac address from efuse */
+	mac_lo = readl(&cdev->macid0l);
+	mac_hi = readl(&cdev->macid0h);
+	mac_addr[0] = mac_hi & 0xFF;
+	mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+	mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+	mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
+	mac_addr[4] = mac_lo & 0xFF;
+	mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+
+	if (!getenv("ethaddr")) {
+		printf("<ethaddr> not set. Validating first E-fuse MAC\n");
+
+		if (is_valid_ethaddr(mac_addr))
+			eth_setenv_enetaddr("ethaddr", mac_addr);
+	}
+
+	mac_lo = readl(&cdev->macid1l);
+	mac_hi = readl(&cdev->macid1h);
+	mac_addr[0] = mac_hi & 0xFF;
+	mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+	mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+	mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
+	mac_addr[4] = mac_lo & 0xFF;
+	mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+
+	if (!getenv("eth1addr")) {
+		if (is_valid_ethaddr(mac_addr))
+			eth_setenv_enetaddr("eth1addr", mac_addr);
+	}
+#endif
+
+	return 0;
+}
+#endif
+
+#if !defined(CONFIG_DM_ETH) && defined(CONFIG_DRIVER_TI_CPSW) && \
+	!defined(CONFIG_SPL_BUILD)
+static void cpsw_control(int enabled)
+{
+	/* VTP can be added here */
+
+	return;
+}
+
+static struct cpsw_slave_data cpsw_slaves[] = {
+	{
+		.slave_reg_ofs	= 0x208,
+		.sliver_reg_ofs	= 0xd80,
+		.phy_addr	= 0,
+	}
+};
+
+static struct cpsw_platform_data cpsw_data = {
+	.mdio_base		= CPSW_MDIO_BASE,
+	.cpsw_base		= CPSW_BASE,
+	.mdio_div		= 0xff,
+	.channels		= 8,
+	.cpdma_reg_ofs		= 0x800,
+	.slaves			= 1,
+	.slave_data		= cpsw_slaves,
+	.ale_reg_ofs		= 0xd00,
+	.ale_entries		= 1024,
+	.host_port_reg_ofs	= 0x108,
+	.hw_stats_reg_ofs	= 0x900,
+	.bd_ram_ofs		= 0x2000,
+	.mac_control		= (1 << 5),
+	.control		= cpsw_control,
+	.host_port_num		= 0,
+	.version		= CPSW_CTRL_VERSION_2,
+};
+
+int board_eth_init(bd_t *bis)
+{
+	int rv, n = 0;
+
+	writel(RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE, &cdev->miisel);
+	cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_RMII;
+
+	rv = cpsw_register(&cpsw_data);
+	if (rv < 0)
+		printf("Error %d registering CPSW switch\n", rv);
+	else
+		n += rv;
+
+	return n;
+}
+#endif