arm: mvebu: Add support for Synology DS116 (Armada 385)

Synology DS116 is a NAS based on Marvell Armada 385 SoC.

Board Specification:

- Marvel MV88F6820 Dual Core at 1.8GHz
- 1 GiB DDR3 RAM
- 8MB Macronix mx25l6405d SPI flash
- I2C
- 2x USB 3.0
- 1x GBE LAN port (PHY: Marvell 88E1510)
- 1x SATA (6 Gbps)
- 3x LED
- PIC16F1829 (connected to uart1)
- GPIO fan
- serial console

Note that this patch depends on the add-support for Thecus N2350 patch:
https://patchwork.ozlabs.org/project/uboot/patch/20230201231306.7010-1-mibodhi@gmail.com/

Signed-off-by: Tony Dinh <mibodhi@gmail.com>
diff --git a/board/Synology/ds116/ds116.c b/board/Synology/ds116/ds116.c
new file mode 100644
index 0000000..cf2575b
--- /dev/null
+++ b/board/Synology/ds116/ds116.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2023 Tony Dinh <mibodhi@gmail.com>
+ *
+ */
+
+#include <i2c.h>
+#include <init.h>
+#include <miiphy.h>
+#include <net.h>
+#include <netdev.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+#include <linux/bitops.h>
+
+#include "../drivers/ddr/marvell/a38x/ddr3_init.h"
+#include <../serdes/a38x/high_speed_env_spec.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Those DS116_GPP_xx values and defines in board_serdes_map, and board_topology_map
+ * are taken from Marvell U-Boot version
+ * U-Boot 2013.01-g6cc0a6d (Marvell version: 2015_T1.0p16)
+ */
+#define DS116_GPP_OUT_ENA_LOW						\
+	(~(BIT(1)  | BIT(4)  | BIT(6)  | BIT(7)  | BIT(8)  | BIT(9)  |	\
+	   BIT(10) | BIT(11) | BIT(15) | BIT(19) | BIT(22) | BIT(23) |	\
+	   BIT(25) | BIT(26) | BIT(27) | BIT(29) | BIT(30) | BIT(31)))
+#define DS116_GPP_OUT_ENA_MID						\
+	(~(BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(15) |	\
+	   BIT(16) | BIT(17) | BIT(18) | BIT(26) | BIT(27)))
+
+#define DS116_GPP_OUT_VAL_LOW	BIT(15)
+#define DS116_GPP_OUT_VAL_MID	(BIT(26) | BIT(27))
+#define DS116_GPP_POL_LOW	0x0
+#define DS116_GPP_POL_MID	0x0
+
+static struct serdes_map board_serdes_map[] = {
+	{SGMII0, SERDES_SPEED_1_25_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+	{SATA0, SERDES_SPEED_6_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+	{DEFAULT_SERDES, SERDES_SPEED_5_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+	{DEFAULT_SERDES, SERDES_SPEED_5_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+	{USB3_HOST0, SERDES_SPEED_5_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+	{USB3_HOST1, SERDES_SPEED_5_GBPS, SERDES_DEFAULT_MODE, 0, 0},
+};
+
+int hws_board_topology_load(struct serdes_map **serdes_map_array, u8 *count)
+{
+	*serdes_map_array = board_serdes_map;
+	*count = ARRAY_SIZE(board_serdes_map);
+	return 0;
+}
+
+/*
+ * Define the DDR layout / topology here in the board file. This will
+ * be used by the DDR3 init code in the SPL U-Boot version to configure
+ * the DDR3 controller.
+ */
+static struct mv_ddr_topology_map board_topology_map = {
+	DEBUG_LEVEL_ERROR,
+	0x1, /* active interfaces */
+	/* cs_mask, mirror, dqs_swap, ck_swap X PUPs */
+	{ { { {0x1, 0, 0, 0},
+	      {0x1, 0, 0, 0},
+	      {0x1, 0, 0, 0},
+	      {0x1, 0, 0, 0},
+	      {0x1, 0, 0, 0} },
+	    SPEED_BIN_DDR_1866L,        /* speed_bin */
+	    MV_DDR_DEV_WIDTH_16BIT,     /* memory_width - 16 bits */
+	    MV_DDR_DIE_CAP_4GBIT,       /* mem_size - DS116 board has 2x512MB DRAM banks */
+	    MV_DDR_FREQ_800,            /* frequency */
+	    0, 0,			/* cas_wl cas_l */
+	    MV_DDR_TEMP_LOW,		/* temperature */
+	    MV_DDR_TIM_DEFAULT} },	/* timing */
+	BUS_MASK_32BIT,			/* Busses mask */
+	MV_DDR_CFG_DEFAULT,		/* ddr configuration data source */
+	NOT_COMBINED,			/* ddr twin-die combined */
+	{ {0} },			/* raw spd data */
+	{0}				/* timing parameters */
+};
+
+struct mv_ddr_topology_map *mv_ddr_topology_map_get(void)
+{
+	/* Return the board topology as defined in the board code */
+	return &board_topology_map;
+}
+
+int board_early_init_f(void)
+{
+	/*
+	 * Those MPP values are taken from the Marvell U-Boot version
+	 * U-Boot 2013.01-g6cc0a6d (Marvell version: 2015_T1.0p16)
+	 */
+
+	/* Configure MPP */
+	writel(0x00111111, MVEBU_MPP_BASE + 0x00);
+	writel(0x00000000, MVEBU_MPP_BASE + 0x04);
+	writel(0x11040330, MVEBU_MPP_BASE + 0x08);
+	writel(0x00000011, MVEBU_MPP_BASE + 0x0c);
+	writel(0x00000000, MVEBU_MPP_BASE + 0x10);
+	writel(0x00000000, MVEBU_MPP_BASE + 0x14);
+	writel(0x00000000, MVEBU_MPP_BASE + 0x18);
+	writel(0x00000000, MVEBU_MPP_BASE + 0x1c);
+
+	/* Set GPP Out value */
+	writel(DS116_GPP_OUT_VAL_LOW, MVEBU_GPIO0_BASE + 0x00);
+	writel(DS116_GPP_OUT_VAL_MID, MVEBU_GPIO1_BASE + 0x00);
+
+	/* Set GPP Polarity */
+	writel(DS116_GPP_POL_LOW, MVEBU_GPIO0_BASE + 0x0c);
+	writel(DS116_GPP_POL_MID, MVEBU_GPIO1_BASE + 0x0c);
+
+	/* Set GPP Out Enable */
+	writel(DS116_GPP_OUT_ENA_LOW, MVEBU_GPIO0_BASE + 0x04);
+	writel(DS116_GPP_OUT_ENA_MID, MVEBU_GPIO1_BASE + 0x04);
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
+
+	return 0;
+}
+
+int board_eth_init(struct bd_info *bis)
+{
+	cpu_eth_init(bis); /* Built in controller(s) come first */
+	return pci_eth_init(bis);
+}