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/*
* (C) Copyright 2007-2008
* Stelian Pop <stelian@popies.net>
* Lead Tech Design <www.leadtechdesign.com>
*
* Achim Ehrlich <aehrlich@taskit.de>
* taskit GmbH <www.taskit.de>
*
* (C) Copyright 2012-
* Markus Hubig <mhubig@imko.de>
* IMKO GmbH <www.imko.de>
* (C) Copyright 2014
* Heiko Schocher <hs@denx.de>
* DENX Software Engineering GmbH
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <asm/io.h>
#include <asm/arch/at91sam9_sdramc.h>
#include <asm/arch/at91sam9260_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/atmel_serial.h>
#include <asm/arch/at91_spi.h>
#include <spi.h>
#include <asm/arch/clk.h>
#include <asm/arch/gpio.h>
#include <asm/gpio.h>
#include <watchdog.h>
# include <net.h>
#ifndef CONFIG_DM_ETH
# include <netdev.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
static void smartweb_request_gpio(void)
{
gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand ena");
gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand rdy");
gpio_request(AT91_PIN_PA26, "ena PHY");
}
static void smartweb_nand_hw_init(void)
{
struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
unsigned long csa;
/* Assign CS3 to NAND/SmartMedia Interface */
csa = readl(&matrix->ebicsa);
csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
writel(csa, &matrix->ebicsa);
/* 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_TDF_CYCLE(2),
&smc->cs[3].mode);
/* Configure RDY/BSY */
at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
/* Enable NandFlash */
at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
}
static void smartweb_macb_hw_init(void)
{
struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
/* Enable the PHY Chip via PA26 on the Stamp 2 Adaptor */
at91_set_gpio_output(AT91_PIN_PA26, 0);
/*
* Disable pull-up on:
* RXDV (PA17) => PHY normal mode (not Test mode)
* ERX0 (PA14) => PHY ADDR0
* ERX1 (PA15) => PHY ADDR1
* ERX2 (PA25) => PHY ADDR2
* ERX3 (PA26) => PHY ADDR3
* ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
*
* PHY has internal pull-down
*/
writel(pin_to_mask(AT91_PIN_PA14) |
pin_to_mask(AT91_PIN_PA15) |
pin_to_mask(AT91_PIN_PA17) |
pin_to_mask(AT91_PIN_PA25) |
pin_to_mask(AT91_PIN_PA26) |
pin_to_mask(AT91_PIN_PA28) |
pin_to_mask(AT91_PIN_PA29),
&pioa->pudr);
at91_phy_reset();
/* Re-enable pull-up */
writel(pin_to_mask(AT91_PIN_PA14) |
pin_to_mask(AT91_PIN_PA15) |
pin_to_mask(AT91_PIN_PA17) |
pin_to_mask(AT91_PIN_PA25) |
pin_to_mask(AT91_PIN_PA26) |
pin_to_mask(AT91_PIN_PA28) |
pin_to_mask(AT91_PIN_PA29),
&pioa->puer);
/* Initialize EMAC=MACB hardware */
at91_macb_hw_init();
}
#ifdef CONFIG_USB_GADGET_AT91
#include <linux/usb/at91_udc.h>
void at91_udp_hw_init(void)
{
/* Enable PLLB */
at91_pllb_clk_enable(get_pllb_init());
/* Enable UDPCK clock, MCK is enabled in at91_clock_init() */
at91_periph_clk_enable(ATMEL_ID_UDP);
at91_system_clk_enable(AT91SAM926x_PMC_UDP);
}
struct at91_udc_data board_udc_data = {
.baseaddr = ATMEL_BASE_UDP0,
};
#endif
int board_early_init_f(void)
{
/* enable this here, as we have SPL without serial support */
at91_seriald_hw_init();
smartweb_request_gpio();
return 0;
}
int board_init(void)
{
smartweb_request_gpio();
/* power LED red */
at91_set_gpio_output(AT91_PIN_PC6, 0);
at91_set_gpio_output(AT91_PIN_PC7, 1);
/* alarm LED off */
at91_set_gpio_output(AT91_PIN_PC8, 0);
at91_set_gpio_output(AT91_PIN_PC9, 0);
/* prog LED red */
at91_set_gpio_output(AT91_PIN_PC10, 0);
at91_set_gpio_output(AT91_PIN_PC11, 1);
#ifdef CONFIG_USB_GADGET_AT91
at91_udp_hw_init();
at91_udc_probe(&board_udc_data);
#endif
/* Adress of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
smartweb_nand_hw_init();
smartweb_macb_hw_init();
return 0;
}
int dram_init(void)
{
gd->ram_size = get_ram_size(
(void *)CONFIG_SYS_SDRAM_BASE,
CONFIG_SYS_SDRAM_SIZE);
return 0;
}
#ifndef CONFIG_DM_ETH
#ifdef CONFIG_MACB
int board_eth_init(bd_t *bis)
{
return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
}
#endif /* CONFIG_MACB */
#endif
#if defined(CONFIG_SPL_BUILD)
#include <spl.h>
#include <nand.h>
#include <spi_flash.h>
void matrix_init(void)
{
struct at91_matrix *mat = (struct at91_matrix *)ATMEL_BASE_MATRIX;
writel((readl(&mat->scfg[3]) & (~AT91_MATRIX_SLOT_CYCLE))
| AT91_MATRIX_SLOT_CYCLE_(0x40),
&mat->scfg[3]);
}
void at91_spl_board_init(void)
{
smartweb_request_gpio();
/* power LED orange */
at91_set_gpio_output(AT91_PIN_PC6, 1);
at91_set_gpio_output(AT91_PIN_PC7, 1);
/* alarm LED orange */
at91_set_gpio_output(AT91_PIN_PC8, 1);
at91_set_gpio_output(AT91_PIN_PC9, 1);
/* prog LED red */
at91_set_gpio_output(AT91_PIN_PC10, 0);
at91_set_gpio_output(AT91_PIN_PC11, 1);
smartweb_nand_hw_init();
at91_set_gpio_input(AT91_PIN_PA28, 1);
at91_set_gpio_input(AT91_PIN_PA29, 1);
/* check if both button are pressed */
if (at91_get_gpio_value(AT91_PIN_PA28) == 0 &&
at91_get_gpio_value(AT91_PIN_PA29) == 0) {
smartweb_nand_hw_init();
nand_init();
spl_nand_erase_one(0, 0);
}
}
#define SDRAM_BASE_CONF (AT91_SDRAMC_NC_9 | AT91_SDRAMC_NR_13 \
| AT91_SDRAMC_CAS_2 \
| AT91_SDRAMC_NB_4 | AT91_SDRAMC_DBW_32 \
| AT91_SDRAMC_TWR_VAL(2) | AT91_SDRAMC_TRC_VAL(7) \
| AT91_SDRAMC_TRP_VAL(2) | AT91_SDRAMC_TRCD_VAL(2) \
| AT91_SDRAMC_TRAS_VAL(5) | AT91_SDRAMC_TXSR_VAL(8))
void mem_init(void)
{
struct at91_matrix *ma = (struct at91_matrix *)ATMEL_BASE_MATRIX;
struct at91_port *port = (struct at91_port *)ATMEL_BASE_PIOC;
struct sdramc_reg setting;
setting.cr = SDRAM_BASE_CONF;
setting.mdr = AT91_SDRAMC_MD_SDRAM;
setting.tr = (CONFIG_SYS_MASTER_CLOCK * 7) / 1000000;
/*
* I write here directly in this register, because this
* approach is smaller than calling at91_set_a_periph() in a
* for loop. This saved me 96 bytes.
*/
writel(0xffff0000, &port->pdr);
writel(readl(&ma->ebicsa) | AT91_MATRIX_CS1A_SDRAMC, &ma->ebicsa);
sdramc_initialize(ATMEL_BASE_CS1, &setting);
}
#endif
static struct atmel_serial_platdata at91sam9260_serial_plat = {
.base_addr = ATMEL_BASE_DBGU,
};
U_BOOT_DEVICE(at91sam9260_serial) = {
.name = "serial_atmel",
.platdata = &at91sam9260_serial_plat,
};
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