board: sifive: add HiFive Unmatched board support

Add defconfig and board support for HiFive Unmatched.

Signed-off-by: Green Wan <green.wan@sifive.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>

6 files changed, 179 insertions, 0 deletions

diff --git a/board/sifive/unleashed/Kconfig b/board/sifive/unleashed/Kconfig
index 502916e86a..b3b4342a1f 100644
--- a/board/sifive/unleashed/Kconfig
+++ b/board/sifive/unleashed/Kconfig
@@ -28,6 +28,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select SIFIVE_FU540
 	select ENV_IS_IN_SPI_FLASH
 	select BINMAN
+	select RESET_SIFIVE
 	imply CMD_DHCP
 	imply CMD_EXT2
 	imply CMD_EXT4
diff --git a/board/sifive/unmatched/Kconfig b/board/sifive/unmatched/Kconfig
new file mode 100644
index 0000000000..88b5883cae
--- /dev/null
+++ b/board/sifive/unmatched/Kconfig
@@ -0,0 +1,51 @@
+if TARGET_SIFIVE_UNMATCHED
+
+config SYS_BOARD
+	default "unmatched"
+
+config SYS_VENDOR
+	default "sifive"
+
+config SYS_CPU
+	default "fu740"
+
+config SYS_CONFIG_NAME
+	default "sifive-unmatched"
+
+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_FU740
+	select SUPPORT_SPL
+	select RESET_SIFIVE
+	select BINMAN
+	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 SYSRESET
+	imply SYSRESET_GPIO
+
+endif
diff --git a/board/sifive/unmatched/MAINTAINERS b/board/sifive/unmatched/MAINTAINERS
new file mode 100644
index 0000000000..94c9510bfa
--- /dev/null
+++ b/board/sifive/unmatched/MAINTAINERS
@@ -0,0 +1,9 @@
+SiFive HiFive Unmatched FU740 BOARD
+M:	Paul Walmsley <paul.walmsley@sifive.com>
+M:	Pragnesh Patel <pragnesh.patel@sifive.com>
+M:	Green Wan <green.wan@sifive.com>
+S:	Maintained
+F:	board/sifive/unmatched/
+F:	doc/board/sifive/hifive-unmatched-fu740.rst
+F:	include/configs/sifive-unmatched.h
+F:	configs/sifive_unmatched_defconfig
diff --git a/board/sifive/unmatched/Makefile b/board/sifive/unmatched/Makefile
new file mode 100644
index 0000000000..6308c80d64
--- /dev/null
+++ b/board/sifive/unmatched/Makefile
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2020-2021 SiFive, Inc
+
+obj-y   += unmatched.o
+
+ifdef CONFIG_SPL_BUILD
+obj-y += spl.o
+endif
diff --git a/board/sifive/unmatched/spl.c b/board/sifive/unmatched/spl.c
new file mode 100644
index 0000000000..5e1333b09a
--- /dev/null
+++ b/board/sifive/unmatched/spl.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2020-2021 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_SD		0xb
+#define MODE_SELECT_MASK	GENMASK(3, 0)
+
+int spl_board_init_f(void)
+{
+	int ret;
+
+	ret = spl_soc_init();
+	if (ret) {
+		debug("HiFive Unmatched FU740 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_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/unmatched/unmatched.c b/board/sifive/unmatched/unmatched.c
new file mode 100644
index 0000000000..6d60559588
--- /dev/null
+++ b/board/sifive/unmatched/unmatched.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2020-2021, SiFive Inc
+ *
+ * Authors:
+ *   Pragnesh Patel <pragnesh.patel@sifive.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <asm/arch/cache.h>
+
+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;
+}