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u-boot/board/atmel/at91sam9x5ek/at91sam9x5ek.c
Wu, Josh 1c5794a13e at91sam9x5: set default EBI I/O drive configuration. 
This patch configure at91sam9x5's EBI drive I/O. Without this, When SD card boot, the nand flash read/write are not stable. Which will cause kernel MTD test fail (Since mainline kernel doesn't configure the EBI register).

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2012-09-13 14:27:28 +02:00

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/*
* Copyright (C) 2012 Atmel Corporation
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/at91sam9x5_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/gpio.h>
#include <asm/arch/clk.h>
#include <lcd.h>
#include <atmel_hlcdc.h>
#ifdef CONFIG_MACB
#include <net.h>
#endif
#include <netdev.h>
#ifdef CONFIG_LCD_INFO
#include <nand.h>
#include <version.h>
#endif
#ifdef CONFIG_ATMEL_SPI
#include <spi.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
/* ------------------------------------------------------------------------- */
/*
* Miscelaneous platform dependent initialisations
*/
#ifdef CONFIG_CMD_NAND
static void at91sam9x5ek_nand_hw_init(void)
{
struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
unsigned long csa;
/* Enable CS3 */
csa = readl(&matrix->ebicsa);
csa |= AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA;
/* NAND flash on D16 */
csa |= AT91_MATRIX_NFD0_ON_D16;
/* Configure IO drive */
csa &= ~AT91_MATRIX_EBI_EBI_IOSR_NORMAL;
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(5) |
AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(6),
&smc->cs[3].pulse);
writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(6),
&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(1),
&smc->cs[3].mode);
writel(1 << ATMEL_ID_PIOCD, &pmc->pcer);
/* 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);
at91_set_a_periph(AT91_PIO_PORTD, 0, 1); /* NAND OE */
at91_set_a_periph(AT91_PIO_PORTD, 1, 1); /* NAND WE */
at91_set_a_periph(AT91_PIO_PORTD, 2, 1); /* NAND ALE */
at91_set_a_periph(AT91_PIO_PORTD, 3, 1); /* NAND CLE */
at91_set_a_periph(AT91_PIO_PORTD, 6, 1);
at91_set_a_periph(AT91_PIO_PORTD, 7, 1);
at91_set_a_periph(AT91_PIO_PORTD, 8, 1);
at91_set_a_periph(AT91_PIO_PORTD, 9, 1);
at91_set_a_periph(AT91_PIO_PORTD, 10, 1);
at91_set_a_periph(AT91_PIO_PORTD, 11, 1);
at91_set_a_periph(AT91_PIO_PORTD, 12, 1);
at91_set_a_periph(AT91_PIO_PORTD, 13, 1);
}
#endif
int board_eth_init(bd_t *bis)
{
int rc = 0;
#ifdef CONFIG_MACB
if (has_emac0())
rc = macb_eth_initialize(0,
(void *)ATMEL_BASE_EMAC0, 0x00);
if (has_emac1())
rc = macb_eth_initialize(1,
(void *)ATMEL_BASE_EMAC1, 0x00);
#endif
return rc;
}
#ifdef CONFIG_LCD
vidinfo_t panel_info = {
.vl_col = 800,
.vl_row = 480,
.vl_clk = 24000000,
.vl_sync = LCDC_LCDCFG5_HSPOL | LCDC_LCDCFG5_VSPOL,
.vl_bpix = LCD_BPP,
.vl_tft = 1,
.vl_clk_pol = 1,
.vl_hsync_len = 128,
.vl_left_margin = 64,
.vl_right_margin = 64,
.vl_vsync_len = 2,
.vl_upper_margin = 22,
.vl_lower_margin = 21,
.mmio = ATMEL_BASE_LCDC,
};
void lcd_enable(void)
{
if (has_lcdc())
at91_set_a_periph(AT91_PIO_PORTC, 29, 1); /* power up */
}
void lcd_disable(void)
{
if (has_lcdc())
at91_set_a_periph(AT91_PIO_PORTC, 29, 0); /* power down */
}
static void at91sam9x5ek_lcd_hw_init(void)
{
struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
if (has_lcdc()) {
at91_set_a_periph(AT91_PIO_PORTC, 26, 0); /* LCDPWM */
at91_set_a_periph(AT91_PIO_PORTC, 27, 0); /* LCDVSYNC */
at91_set_a_periph(AT91_PIO_PORTC, 28, 0); /* LCDHSYNC */
at91_set_a_periph(AT91_PIO_PORTC, 24, 0); /* LCDDISP */
at91_set_a_periph(AT91_PIO_PORTC, 29, 0); /* LCDDEN */
at91_set_a_periph(AT91_PIO_PORTC, 30, 0); /* LCDPCK */
at91_set_a_periph(AT91_PIO_PORTC, 0, 0); /* LCDD0 */
at91_set_a_periph(AT91_PIO_PORTC, 1, 0); /* LCDD1 */
at91_set_a_periph(AT91_PIO_PORTC, 2, 0); /* LCDD2 */
at91_set_a_periph(AT91_PIO_PORTC, 3, 0); /* LCDD3 */
at91_set_a_periph(AT91_PIO_PORTC, 4, 0); /* LCDD4 */
at91_set_a_periph(AT91_PIO_PORTC, 5, 0); /* LCDD5 */
at91_set_a_periph(AT91_PIO_PORTC, 6, 0); /* LCDD6 */
at91_set_a_periph(AT91_PIO_PORTC, 7, 0); /* LCDD7 */
at91_set_a_periph(AT91_PIO_PORTC, 8, 0); /* LCDD8 */
at91_set_a_periph(AT91_PIO_PORTC, 9, 0); /* LCDD9 */
at91_set_a_periph(AT91_PIO_PORTC, 10, 0); /* LCDD10 */
at91_set_a_periph(AT91_PIO_PORTC, 11, 0); /* LCDD11 */
at91_set_a_periph(AT91_PIO_PORTC, 12, 0); /* LCDD12 */
at91_set_a_periph(AT91_PIO_PORTC, 13, 0); /* LCDD13 */
at91_set_a_periph(AT91_PIO_PORTC, 14, 0); /* LCDD14 */
at91_set_a_periph(AT91_PIO_PORTC, 15, 0); /* LCDD15 */
at91_set_a_periph(AT91_PIO_PORTC, 16, 0); /* LCDD16 */
at91_set_a_periph(AT91_PIO_PORTC, 17, 0); /* LCDD17 */
at91_set_a_periph(AT91_PIO_PORTC, 18, 0); /* LCDD18 */
at91_set_a_periph(AT91_PIO_PORTC, 19, 0); /* LCDD19 */
at91_set_a_periph(AT91_PIO_PORTC, 20, 0); /* LCDD20 */
at91_set_a_periph(AT91_PIO_PORTC, 21, 0); /* LCDD21 */
at91_set_a_periph(AT91_PIO_PORTC, 22, 0); /* LCDD22 */
at91_set_a_periph(AT91_PIO_PORTC, 23, 0); /* LCDD23 */
writel(1 << ATMEL_ID_LCDC, &pmc->pcer);
}
}
#ifdef CONFIG_LCD_INFO
void lcd_show_board_info(void)
{
ulong dram_size, nand_size;
int i;
char temp[32];
if (has_lcdc()) {
lcd_printf("%s\n", U_BOOT_VERSION);
lcd_printf("(C) 2012 ATMEL Corp\n");
lcd_printf("at91support@atmel.com\n");
lcd_printf("%s CPU at %s MHz\n",
get_cpu_name(),
strmhz(temp, get_cpu_clk_rate()));
dram_size = 0;
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
dram_size += gd->bd->bi_dram[i].size;
nand_size = 0;
for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
nand_size += nand_info[i].size;
lcd_printf(" %ld MB SDRAM, %ld MB NAND\n",
dram_size >> 20,
nand_size >> 20);
}
}
#endif /* CONFIG_LCD_INFO */
#endif /* CONFIG_LCD */
/* SPI chip select control */
#ifdef CONFIG_ATMEL_SPI
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
return bus == 0 && cs < 2;
}
void spi_cs_activate(struct spi_slave *slave)
{
switch (slave->cs) {
case 1:
at91_set_pio_output(AT91_PIO_PORTA, 7, 0);
break;
case 0:
default:
at91_set_pio_output(AT91_PIO_PORTA, 14, 0);
break;
}
}
void spi_cs_deactivate(struct spi_slave *slave)
{
switch (slave->cs) {
case 1:
at91_set_pio_output(AT91_PIO_PORTA, 7, 1);
break;
case 0:
default:
at91_set_pio_output(AT91_PIO_PORTA, 14, 1);
break;
}
}
#endif /* CONFIG_ATMEL_SPI */
int board_early_init_f(void)
{
at91_seriald_hw_init();
return 0;
}
int board_init(void)
{
/* arch number of AT91SAM9X5EK-Board */
gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9X5EK;
/* adress of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
#ifdef CONFIG_CMD_NAND
at91sam9x5ek_nand_hw_init();
#endif
#ifdef CONFIG_ATMEL_SPI
at91_spi0_hw_init(1 << 0);
at91_spi0_hw_init(1 << 4);
#endif
#ifdef CONFIG_MACB
at91_macb_hw_init();
#endif
#ifdef CONFIG_LCD
at91sam9x5ek_lcd_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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