pm9g45.c
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/*
* (C) Copyright 2010
* Ilko Iliev <iliev@ronetix.at>
* Asen Dimov <dimov@ronetix.at>
* Ronetix GmbH <www.ronetix.at>
*
* (C) Copyright 2007-2008
* Stelian Pop <stelian@popies.net>
* Lead Tech Design <www.leadtechdesign.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.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/gpio.h>
#include <asm/arch/clk.h>
#if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
#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 pm9g45_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->ccr[6]) | AT91_MATRIX_CSA_EBI_CS3A;
writel(csa, &matrix->ccr[6]);
/* 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(4) | AT91_SMC_PULSE_NCS_WR(3) |
AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(2),
&smc->cs[3].pulse);
writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(4),
&smc->cs[3].cycle);
writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
AT91_SMC_MODE_EXNW_DISABLE |
AT91_SMC_MODE_DBW_8 |
AT91_SMC_MODE_TDF_CYCLE(3),
&smc->cs[3].mode);
at91_periph_clk_enable(ATMEL_ID_PIOC);
#ifdef CONFIG_SYS_NAND_READY_PIN
/* Configure RDY/BSY */
gpio_direction_input(CONFIG_SYS_NAND_READY_PIN);
#endif
/* Enable NandFlash */
gpio_direction_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
}
#endif
#ifdef CONFIG_MACB
static void pm9g45_macb_hw_init(void)
{
/*
* PD2 enables the 50MHz oscillator for Ethernet PHY
* 1 - enable
* 0 - disable
*/
at91_set_pio_output(AT91_PIO_PORTD, 2, 1);
at91_set_pio_value(AT91_PIO_PORTD, 2, 1); /* 1- enable, 0 - disable */
at91_periph_clk_enable(ATMEL_ID_EMAC);
/*
* Disable pull-up on:
* RXDV (PA15) => PHY normal mode (not Test mode)
* ERX0 (PA12) => PHY ADDR0
* ERX1 (PA13) => PHY ADDR1 => PHYADDR = 0x0
*
* PHY has internal pull-down
*/
at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 12, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 13, 0);
/* Re-enable pull-up */
at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 12, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 13, 1);
at91_macb_hw_init();
}
#endif
int board_early_init_f(void)
{
at91_periph_clk_enable(ATMEL_ID_PIOA);
at91_periph_clk_enable(ATMEL_ID_PIOB);
at91_periph_clk_enable(ATMEL_ID_PIOC);
at91_periph_clk_enable(ATMEL_ID_PIODE);
at91_seriald_hw_init();
return 0;
}
int board_init(void)
{
/* arch number of AT91SAM9M10G45EK-Board */
gd->bd->bi_arch_number = MACH_TYPE_PM9G45;
/* adress of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
#ifdef CONFIG_CMD_NAND
pm9g45_nand_hw_init();
#endif
#ifdef CONFIG_MACB
pm9g45_macb_hw_init();
#endif
return 0;
}
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_MACB
/*
* Initialize ethernet HW addr prior to starting Linux,
* needed for nfsroot
*/
eth_init();
#endif
}
#endif
int board_eth_init(bd_t *bis)
{
int rc = 0;
#ifdef CONFIG_MACB
rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0x01);
#endif
return rc;
}