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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 Microchip Technology Inc. and its subsidiaries
*
* Author: Sandeep Sheriker M <sandeep.sheriker@microchip.com>
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/at91_sfr.h>
#include <asm/arch/clk.h>
#include <asm/arch/gpio.h>
#include <debug_uart.h>
#include <asm/mach-types.h>
DECLARE_GLOBAL_DATA_PTR;
void at91_prepare_cpu_var(void);
#ifdef CONFIG_CMD_NAND
static void sam9x60ek_nand_hw_init(void)
{
struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
unsigned int csa;
at91_pio3_set_a_periph(AT91_PIO_PORTD, 0, 1); /* NAND OE */
at91_pio3_set_a_periph(AT91_PIO_PORTD, 1, 1); /* NAND WE */
at91_pio3_set_a_periph(AT91_PIO_PORTD, 2, 0); /* NAND ALE */
at91_pio3_set_a_periph(AT91_PIO_PORTD, 3, 0); /* NAND CLE */
/* Enable NandFlash */
at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
/* Configure RDY/BSY */
at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
at91_pio3_set_a_periph(AT91_PIO_PORTD, 6, 1);
at91_pio3_set_a_periph(AT91_PIO_PORTD, 7, 1);
at91_pio3_set_a_periph(AT91_PIO_PORTD, 8, 1);
at91_pio3_set_a_periph(AT91_PIO_PORTD, 9, 1);
at91_pio3_set_a_periph(AT91_PIO_PORTD, 10, 1);
at91_pio3_set_a_periph(AT91_PIO_PORTD, 11, 1);
at91_pio3_set_a_periph(AT91_PIO_PORTD, 12, 1);
at91_pio3_set_a_periph(AT91_PIO_PORTD, 13, 1);
at91_periph_clk_enable(ATMEL_ID_PIOD);
/* Enable CS3 */
csa = readl(&sfr->ebicsa);
csa |= AT91_SFR_CCFG_EBI_CSA(3, 1) | AT91_SFR_CCFG_NFD0_ON_D16;
/* Configure IO drive */
csa &= ~AT91_SFR_CCFG_EBI_DRIVE_SAM9X60;
writel(csa, &sfr->ebicsa);
/* Configure SMC CS3 for NAND/SmartMedia */
writel(AT91_SMC_SETUP_NWE(4), &smc->cs[3].setup);
writel(AT91_SMC_PULSE_NWE(10) | AT91_SMC_PULSE_NCS_WR(20) |
AT91_SMC_PULSE_NRD(10) | AT91_SMC_PULSE_NCS_RD(20),
&smc->cs[3].pulse);
writel(AT91_SMC_CYCLE_NWE(20) | AT91_SMC_CYCLE_NRD(20),
&smc->cs[3].cycle);
writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
#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 | AT91_SMC_MODE_TDF_CYCLE(15),
&smc->cs[3].mode);
}
#endif
#ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void)
{
at91_prepare_cpu_var();
return 0;
}
#endif
#ifdef CONFIG_DEBUG_UART_BOARD_INIT
void board_debug_uart_init(void)
{
at91_seriald_hw_init();
}
#endif
#ifdef CONFIG_BOARD_EARLY_INIT_F
int board_early_init_f(void)
{
#ifdef CONFIG_DEBUG_UART
debug_uart_init();
#endif
return 0;
}
#endif
int board_init(void)
{
/* address of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
#ifdef CONFIG_CMD_NAND
sam9x60ek_nand_hw_init();
#endif
return 0;
}
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
CONFIG_SYS_SDRAM_SIZE);
return 0;
}
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