MSCC: Add board support for Serval SoC family.

Add board support and configuration for Jaguar2 SoC family.
The detection of the board type is based on the phy ids.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

3 files changed, 91 insertions, 0 deletions

diff --git a/board/mscc/serval/Kconfig b/board/mscc/serval/Kconfig
new file mode 100644
index 0000000000..64f1c683e4
--- /dev/null
+++ b/board/mscc/serval/Kconfig
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+config SYS_VENDOR
+	default "mscc"
+
+if SOC_SERVAL
+
+config SYS_BOARD
+	default "serval"
+
+config SYS_CONFIG_NAME
+	default "serval"
+
+endif
diff --git a/board/mscc/serval/Makefile b/board/mscc/serval/Makefile
new file mode 100644
index 0000000000..c7ba56e951
--- /dev/null
+++ b/board/mscc/serval/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+obj-$(CONFIG_SOC_SERVAL)	:= serval.o
diff --git a/board/mscc/serval/serval.c b/board/mscc/serval/serval.c
new file mode 100644
index 0000000000..24ee5e528d
--- /dev/null
+++ b/board/mscc/serval/serval.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <led.h>
+
+enum {
+	BOARD_TYPE_PCB106 = 0xAABBCD00,
+	BOARD_TYPE_PCB105,
+};
+
+int board_early_init_r(void)
+{
+	/* Prepare SPI controller to be used in master mode */
+	writel(0, BASE_CFG + ICPU_SW_MODE);
+
+	/* Address of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE;
+
+	/* LED setup */
+	if (IS_ENABLED(CONFIG_LED))
+		led_default_state();
+
+	return 0;
+}
+
+static void do_board_detect(void)
+{
+	u16 gpio_in_reg;
+
+	/* Set MDIO and MDC */
+	mscc_gpio_set_alternate(9, 2);
+	mscc_gpio_set_alternate(10, 2);
+
+	/* Set GPIO page */
+	mscc_phy_wr(1, 16, 31, 0x10);
+	if (!mscc_phy_rd(1, 16, 15, &gpio_in_reg)) {
+		if (gpio_in_reg & 0x200)
+			gd->board_type = BOARD_TYPE_PCB106;
+		else
+			gd->board_type = BOARD_TYPE_PCB105;
+		mscc_phy_wr(1, 16, 15, 0);
+	} else {
+		gd->board_type = BOARD_TYPE_PCB105;
+	}
+}
+
+#if defined(CONFIG_MULTI_DTB_FIT)
+int board_fit_config_name_match(const char *name)
+{
+	if (gd->board_type == BOARD_TYPE_PCB106 &&
+	    strcmp(name, "serval_pcb106") == 0)
+		return 0;
+
+	if (gd->board_type == BOARD_TYPE_PCB105 &&
+	    strcmp(name, "serval_pcb105") == 0)
+		return 0;
+
+	return -1;
+}
+#endif
+
+#if defined(CONFIG_DTB_RESELECT)
+int embedded_dtb_select(void)
+{
+	do_board_detect();
+	fdtdec_setup();
+
+	return 0;
+}
+#endif