5 files changed, 287 insertions, 0 deletions
diff --git a/board/sifive/unleashed/Kconfig b/board/sifive/unleashed/Kconfig
new file mode 100644
index 0000000000..dbffd59c98
--- /dev/null
+++ b/board/sifive/unleashed/Kconfig
@@ -0,0 +1,52 @@
+if TARGET_SIFIVE_UNLEASHED
+
+config SYS_BOARD
+	default "unleashed"
+
+config SYS_VENDOR
+	default "sifive"
+
+config SYS_CPU
+	default "fu540"
+
+config SYS_CONFIG_NAME
+	default "sifive-unleashed"
+
+config SYS_TEXT_BASE
+	default 0x80200000 if SPL
+	default 0x80000000 if !RISCV_SMODE
+	default 0x80200000 if RISCV_SMODE
+
+config SPL_TEXT_BASE
+	default 0x08000000
+
+config SPL_OPENSBI_LOAD_ADDR
+	default 0x80000000
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select SIFIVE_FU540
+	select ENV_IS_IN_SPI_FLASH
+	imply CMD_DHCP
+	imply CMD_EXT2
+	imply CMD_EXT4
+	imply CMD_FAT
+	imply CMD_FS_GENERIC
+	imply CMD_GPT
+	imply PARTITION_TYPE_GUID
+	imply CMD_NET
+	imply CMD_PING
+	imply CMD_SF
+	imply DOS_PARTITION
+	imply EFI_PARTITION
+	imply IP_DYN
+	imply ISO_PARTITION
+	imply PHY_LIB
+	imply PHY_MSCC
+	imply SPI_FLASH
+	imply SPI_FLASH_ISSI
+	imply SYSRESET
+	imply SYSRESET_GPIO
+	imply CMD_I2C
+
+endif
diff --git a/board/sifive/unleashed/MAINTAINERS b/board/sifive/unleashed/MAINTAINERS
new file mode 100644
index 0000000000..2ea00749cb
--- /dev/null
+++ b/board/sifive/unleashed/MAINTAINERS
@@ -0,0 +1,10 @@
+SiFive HiFive Unleashed BOARD
+M:	Paul Walmsley <paul.walmsley@sifive.com>
+M:	Palmer Dabbelt <palmer@dabbelt.com>
+M:	Anup Patel <anup.patel@wdc.com>
+M:	Atish Patra <atish.patra@wdc.com>
+S:	Maintained
+F:	board/sifive/unleashed/
+F:	doc/board/sifive/unleashed.rst
+F:	include/configs/sifive-unleashed.h
+F:	configs/sifive_unleashed_defconfig
diff --git a/board/sifive/unleashed/Makefile b/board/sifive/unleashed/Makefile
new file mode 100644
index 0000000000..5821679dd9
--- /dev/null
+++ b/board/sifive/unleashed/Makefile
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2019 Western Digital Corporation or its affiliates.
+
+obj-y	+= unleashed.o
+
+ifdef CONFIG_SPL_BUILD
+obj-y += spl.o
+endif
diff --git a/board/sifive/unleashed/spl.c b/board/sifive/unleashed/spl.c
new file mode 100644
index 0000000000..fe27316b2d
--- /dev/null
+++ b/board/sifive/unleashed/spl.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2019 SiFive, Inc
+ *
+ * Authors:
+ *   Pragnesh Patel <pragnesh.patel@sifive.com>
+ */
+
+#include <init.h>
+#include <spl.h>
+#include <misc.h>
+#include <log.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <asm/gpio.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/spl.h>
+
+#define GEM_PHY_RESET		SIFIVE_GENERIC_GPIO_NR(0, 12)
+
+#define MODE_SELECT_REG		0x1000
+#define MODE_SELECT_QSPI	0x6
+#define MODE_SELECT_SD		0xb
+#define MODE_SELECT_MASK	GENMASK(3, 0)
+
+int spl_board_init_f(void)
+{
+	int ret;
+
+	ret = spl_soc_init();
+	if (ret) {
+		debug("FU540 SPL init failed: %d\n", ret);
+		return ret;
+	}
+
+	/*
+	 * GEMGXL init VSC8541 PHY reset sequence;
+	 * leave pull-down active for 2ms
+	 */
+	udelay(2000);
+	ret = gpio_request(GEM_PHY_RESET, "gem_phy_reset");
+	if (ret) {
+		debug("gem_phy_reset gpio request failed: %d\n", ret);
+		return ret;
+	}
+
+	/* Set GPIO 12 (PHY NRESET) */
+	ret = gpio_direction_output(GEM_PHY_RESET, 1);
+	if (ret) {
+		debug("gem_phy_reset gpio direction set failed: %d\n", ret);
+		return ret;
+	}
+
+	udelay(1);
+
+	/* Reset PHY again to enter unmanaged mode */
+	gpio_set_value(GEM_PHY_RESET, 0);
+	udelay(1);
+	gpio_set_value(GEM_PHY_RESET, 1);
+	mdelay(15);
+
+	return 0;
+}
+
+u32 spl_boot_device(void)
+{
+	u32 mode_select = readl((void *)MODE_SELECT_REG);
+	u32 boot_device = mode_select & MODE_SELECT_MASK;
+
+	switch (boot_device) {
+	case MODE_SELECT_QSPI:
+		return BOOT_DEVICE_SPI;
+	case MODE_SELECT_SD:
+		return BOOT_DEVICE_MMC1;
+	default:
+		debug("Unsupported boot device 0x%x but trying MMC1\n",
+		      boot_device);
+		return BOOT_DEVICE_MMC1;
+	}
+}
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+	/* boot using first FIT config */
+	return 0;
+}
+#endif
diff --git a/board/sifive/unleashed/unleashed.c b/board/sifive/unleashed/unleashed.c
new file mode 100644
index 0000000000..a4e78220cb
--- /dev/null
+++ b/board/sifive/unleashed/unleashed.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2019 Western Digital Corporation or its affiliates.
+ *
+ * Authors:
+ *   Anup Patel <anup.patel@wdc.com>
+ */
+
+#include <dm.h>
+#include <env.h>
+#include <init.h>
+#include <log.h>
+#include <linux/bitops.h>
+#include <linux/bug.h>
+#include <linux/delay.h>
+#include <misc.h>
+#include <spl.h>
+#include <asm/arch/cache.h>
+
+/*
+ * This define is a value used for error/unknown serial.
+ * If we really care about distinguishing errors and 0 is
+ * valid, we'll need a different one.
+ */
+#define ERROR_READING_SERIAL_NUMBER       0
+
+#ifdef CONFIG_MISC_INIT_R
+
+#if CONFIG_IS_ENABLED(SIFIVE_OTP)
+static u32 otp_read_serialnum(struct udevice *dev)
+{
+	int ret;
+	u32 serial[2] = {0};
+
+	for (int i = 0xfe * 4; i > 0; i -= 8) {
+		ret = misc_read(dev, i, serial, sizeof(serial));
+
+		if (ret != sizeof(serial)) {
+			printf("%s: error reading serial from OTP\n", __func__);
+			break;
+		}
+
+		if (serial[0] == ~serial[1])
+			return serial[0];
+	}
+
+	return ERROR_READING_SERIAL_NUMBER;
+}
+#endif
+
+static u32 fu540_read_serialnum(void)
+{
+	u32 serial = ERROR_READING_SERIAL_NUMBER;
+
+#if CONFIG_IS_ENABLED(SIFIVE_OTP)
+	struct udevice *dev;
+	int ret;
+
+	/* init OTP */
+	ret = uclass_get_device_by_driver(UCLASS_MISC,
+					  DM_DRIVER_GET(sifive_otp), &dev);
+
+	if (ret) {
+		debug("%s: could not find otp device\n", __func__);
+		return serial;
+	}
+
+	/* read serial from OTP and set env var */
+	serial = otp_read_serialnum(dev);
+#endif
+
+	return serial;
+}
+
+static void fu540_setup_macaddr(u32 serialnum)
+{
+	/* Default MAC address */
+	unsigned char mac[6] = { 0x70, 0xb3, 0xd5, 0x92, 0xf0, 0x00 };
+
+	/*
+	 * We derive our board MAC address by ORing last three bytes
+	 * of board serial number to above default MAC address.
+	 *
+	 * This logic of deriving board MAC address is taken from
+	 * SiFive FSBL and is kept unchanged.
+	 */
+	mac[5] |= (serialnum >>  0) & 0xff;
+	mac[4] |= (serialnum >>  8) & 0xff;
+	mac[3] |= (serialnum >> 16) & 0xff;
+
+	/* Update environment variable */
+	eth_env_set_enetaddr("ethaddr", mac);
+}
+
+int misc_init_r(void)
+{
+	u32 serial_num;
+	char buf[9] = {0};
+
+	/* Set ethaddr environment variable from board serial number */
+	if (!env_get("serial#")) {
+		serial_num = fu540_read_serialnum();
+		if (!serial_num) {
+			WARN(true, "Board serial number should not be 0 !!\n");
+			return 0;
+		}
+		snprintf(buf, sizeof(buf), "%08x", serial_num);
+		env_set("serial#", buf);
+		fu540_setup_macaddr(serial_num);
+	}
+	return 0;
+}
+
+#endif
+
+int board_init(void)
+{
+	int ret;
+
+	/* enable all cache ways */
+	ret = cache_enable_ways();
+	if (ret) {
+		debug("%s: could not enable cache ways\n", __func__);
+		return ret;
+	}
+
+	return 0;
+}