u-boot/board/Marvell/db-88f6820-gp/db-88f6820-gp.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2015 Stefan Roese <sr@denx.de>
 */

#include <common.h>
#include <i2c.h>
#include <init.h>
#include <miiphy.h>
#include <net.h>
#include <netdev.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 values and defines are taken from the Marvell U-Boot version
 * "u-boot-2013.01-2014_T3.0"
 */
#define DB_GP_88F68XX_GPP_OUT_ENA_LOW					\
	(~(BIT(1)  | BIT(4)  | BIT(6)  | BIT(7)  | BIT(8)  | BIT(9)  |	\
	   BIT(10) | BIT(11) | BIT(19) | BIT(22) | BIT(23) | BIT(25) |	\
	   BIT(26) | BIT(27) | BIT(29) | BIT(30) | BIT(31)))
#define DB_GP_88F68XX_GPP_OUT_ENA_MID					\
	(~(BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(15) |	\
	   BIT(16) | BIT(17) | BIT(18)))

#define DB_GP_88F68XX_GPP_OUT_VAL_LOW	0x0
#define DB_GP_88F68XX_GPP_OUT_VAL_MID	0x0
#define DB_GP_88F68XX_GPP_POL_LOW	0x0
#define DB_GP_88F68XX_GPP_POL_MID	0x0

/* IO expander on Marvell GP board includes e.g. fan enabling */
struct marvell_io_exp {
	u8 chip;
	u8 addr;
	u8 val;
};

static struct marvell_io_exp io_exp[] = {
	{ 0x20, 6, 0x20 }, /* Configuration registers: Bit on --> Input bits */
	{ 0x20, 7, 0xC3 }, /* Configuration registers: Bit on --> Input bits */
	{ 0x20, 2, 0x1D }, /* Output Data, register#0 */
	{ 0x20, 3, 0x18 }, /* Output Data, register#1 */
	{ 0x21, 6, 0xC3 }, /* Configuration registers: Bit on --> Input bits  */
	{ 0x21, 7, 0x31 }, /* Configuration registers: Bit on --> Input bits  */
	{ 0x21, 2, 0x08 }, /* Output Data, register#0 */
	{ 0x21, 3, 0xC0 }  /* Output Data, register#1 */
};

static struct serdes_map board_serdes_map[] = {
	{PEX0, SERDES_SPEED_5_GBPS, PEX_ROOT_COMPLEX_X1, 0, 0},
	{SATA0, SERDES_SPEED_3_GBPS, SERDES_DEFAULT_MODE, 0, 0},
	{SATA1, SERDES_SPEED_3_GBPS, SERDES_DEFAULT_MODE, 0, 0},
	{SATA3, SERDES_SPEED_3_GBPS, SERDES_DEFAULT_MODE, 0, 0},
	{SATA2, SERDES_SPEED_3_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_8BIT,	/* memory_width */
	    MV_DDR_DIE_CAP_4GBIT,	/* mem_size */
	    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 */
	{ {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)
{
	/* Configure MPP */
	writel(0x11111111, MVEBU_MPP_BASE + 0x00);
	writel(0x11111111, MVEBU_MPP_BASE + 0x04);
	writel(0x11244011, MVEBU_MPP_BASE + 0x08);
	writel(0x22222111, MVEBU_MPP_BASE + 0x0c);
	writel(0x22200002, MVEBU_MPP_BASE + 0x10);
	writel(0x30042022, MVEBU_MPP_BASE + 0x14);
	writel(0x55550555, MVEBU_MPP_BASE + 0x18);
	writel(0x00005550, MVEBU_MPP_BASE + 0x1c);

	/* Set GPP Out value */
	writel(DB_GP_88F68XX_GPP_OUT_VAL_LOW, MVEBU_GPIO0_BASE + 0x00);
	writel(DB_GP_88F68XX_GPP_OUT_VAL_MID, MVEBU_GPIO1_BASE + 0x00);

	/* Set GPP Polarity */
	writel(DB_GP_88F68XX_GPP_POL_LOW, MVEBU_GPIO0_BASE + 0x0c);
	writel(DB_GP_88F68XX_GPP_POL_MID, MVEBU_GPIO1_BASE + 0x0c);

	/* Set GPP Out Enable */
	writel(DB_GP_88F68XX_GPP_OUT_ENA_LOW, MVEBU_GPIO0_BASE + 0x04);
	writel(DB_GP_88F68XX_GPP_OUT_ENA_MID, MVEBU_GPIO1_BASE + 0x04);

	return 0;
}

int board_init(void)
{
	int i;

	/* adress of boot parameters */
	gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;

	/* Init I2C IO expanders */
	for (i = 0; i < ARRAY_SIZE(io_exp); i++)
		i2c_write(io_exp[i].chip, io_exp[i].addr, 1, &io_exp[i].val, 1);

	return 0;
}

int checkboard(void)
{
	puts("Board: Marvell DB-88F6820-GP\n");

	return 0;
}

int board_eth_init(bd_t *bis)
{
	cpu_eth_init(bis); /* Built in controller(s) come first */
	return pci_eth_init(bis);
}