uboot/u-boot-stm32mp-2020.01/board/ronetix/pm9261/pm9261.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2007-2008
 * Stelian Pop <stelian@popies.net>
 * Lead Tech Design <www.leadtechdesign.com>
 * Copyright (C) 2008 Ronetix Ilko Iliev (www.ronetix.at)
 * Copyright (C) 2009 Jean-Christopher PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
 */

#include <common.h>
#include <vsprintf.h>
#include <linux/sizes.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/at91_matrix.h>
#include <asm/arch/clk.h>
#include <asm/arch/gpio.h>
#if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_DRIVER_DM9000)
#include <net.h>
#endif
#include <netdev.h>
#include <asm/mach-types.h>

DECLARE_GLOBAL_DATA_PTR;

/* ------------------------------------------------------------------------- */
/*
 * Miscelaneous platform dependent initialisations
 */

#ifdef CONFIG_CMD_NAND
static void pm9261_nand_hw_init(void)
{
	unsigned long csa;
	struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
	struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;

	/* Enable CS3 */
	csa = readl(&matrix->csa) | AT91_MATRIX_CSA_EBI_CS3A;
	writel(csa, &matrix->csa);

	/* Configure SMC CS3 for NAND/SmartMedia */
	writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
		AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
		&smc->cs[3].setup);

	writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
		AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
		&smc->cs[3].pulse);

	writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
		&smc->cs[3].cycle);

	writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
		AT91_SMC_MODE_EXNW_DISABLE |
#ifdef CONFIG_SYS_NAND_DBW_16
		AT91_SMC_MODE_DBW_16 |
#else /* CONFIG_SYS_NAND_DBW_8 */
		AT91_SMC_MODE_DBW_8 |
#endif
		AT91_SMC_MODE_TDF_CYCLE(2),
		&smc->cs[3].mode);

	at91_periph_clk_enable(ATMEL_ID_PIOA);
	at91_periph_clk_enable(ATMEL_ID_PIOC);

	/* Configure RDY/BSY */
	gpio_direction_input(CONFIG_SYS_NAND_READY_PIN);

	/* Enable NandFlash */
	gpio_direction_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);

	at91_set_a_periph(AT91_PIO_PORTC, 0, 0);	/* NANDOE */
	at91_set_a_periph(AT91_PIO_PORTC, 1, 0);	/* NANDWE */
}
#endif


#ifdef CONFIG_DRIVER_DM9000
static void pm9261_dm9000_hw_init(void)
{
	struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;

	/* Configure SMC CS2 for DM9000 */
	writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
		AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
		&smc->cs[2].setup);

	writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(8) |
		AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(8),
		&smc->cs[2].pulse);

	writel(AT91_SMC_CYCLE_NWE(16) | AT91_SMC_CYCLE_NRD(16),
		&smc->cs[2].cycle);

	writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
		AT91_SMC_MODE_EXNW_DISABLE |
		AT91_SMC_MODE_BAT | AT91_SMC_MODE_DBW_16 |
		AT91_SMC_MODE_TDF_CYCLE(1),
		&smc->cs[2].mode);

	/* Configure Interrupt pin as input, no pull-up */
	at91_periph_clk_enable(ATMEL_ID_PIOA);
	at91_set_pio_input(AT91_PIO_PORTA, 24, 0);
}
#endif

int board_early_init_f(void)
{
	return 0;
}

int board_init(void)
{
	/* arch number of PM9261-Board */
	gd->bd->bi_arch_number = MACH_TYPE_PM9261;

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

#ifdef CONFIG_CMD_NAND
	pm9261_nand_hw_init();
#endif
#ifdef CONFIG_DRIVER_DM9000
	pm9261_dm9000_hw_init();
#endif
	return 0;
}

#ifdef CONFIG_DRIVER_DM9000
int board_eth_init(bd_t *bis)
{
	return dm9000_initialize(bis);
}
#endif

int dram_init(void)
{
	/* dram_init must store complete ramsize in gd->ram_size */
	gd->ram_size = get_ram_size((void *)PHYS_SDRAM,
				PHYS_SDRAM_SIZE);
	return 0;
}

int dram_init_banksize(void)
{
	gd->bd->bi_dram[0].start = PHYS_SDRAM;
	gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;

	return 0;
}

#ifdef CONFIG_RESET_PHY_R
void reset_phy(void)
{
#ifdef CONFIG_DRIVER_DM9000
	/*
	 * Initialize ethernet HW addr prior to starting Linux,
	 * needed for nfsroot
	 */
	eth_init();
#endif
}
#endif

#ifdef CONFIG_DISPLAY_BOARDINFO
int checkboard (void)
{
	char buf[32];

	printf ("Board : Ronetix PM9261\n");
	printf ("Crystal frequency: %8s MHz\n",
					strmhz(buf, get_main_clk_rate()));
	printf ("CPU clock        : %8s MHz\n",
					strmhz(buf, get_cpu_clk_rate()));
	printf ("Master clock     : %8s MHz\n",
					strmhz(buf, get_mck_clk_rate()));

	return 0;
}
#endif