diff options
Diffstat (limited to 'board/atmel/at91sam9n12ek/at91sam9n12ek.c')
| -rw-r--r-- | board/atmel/at91sam9n12ek/at91sam9n12ek.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/board/atmel/at91sam9n12ek/at91sam9n12ek.c b/board/atmel/at91sam9n12ek/at91sam9n12ek.c new file mode 100644 index 0000000..8752794 --- /dev/null +++ b/board/atmel/at91sam9n12ek/at91sam9n12ek.c @@ -0,0 +1,228 @@ +/* + * (C) Copyright 2013 Atmel Corporation + * Josh Wu <josh.wu@atmel.com> + * + * 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/at91_pio.h> +#include <asm/arch/clk.h> +#include <lcd.h> +#include <atmel_hlcdc.h> +#include <atmel_mci.h> + +#ifdef CONFIG_LCD_INFO +#include <nand.h> +#include <version.h> +#endif + +DECLARE_GLOBAL_DATA_PTR; + +/* ------------------------------------------------------------------------- */ +/* + * Miscelaneous platform dependent initialisations + */ +#ifdef CONFIG_NAND_ATMEL +static void at91sam9n12ek_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_EBI_CS3A_SMC_SMARTMEDIA; + /* Configure databus */ + csa &= ~AT91_MATRIX_NFD0_ON_D16; /* nandflash connect to D0~D15 */ + /* 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(2) | 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(7), + &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); + + /* Configure RDY/BSY pin */ + at91_set_pio_input(AT91_PIO_PORTD, 5, 1); + + /* Configure ENABLE pin for NandFlash */ + at91_set_pio_output(AT91_PIO_PORTD, 4, 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); /* ALE */ + at91_set_a_periph(AT91_PIO_PORTD, 3, 1); /* CLE */ +} +#endif + +#ifdef CONFIG_LCD +vidinfo_t panel_info = { + .vl_col = 480, + .vl_row = 272, + .vl_clk = 9000000, + .vl_bpix = LCD_BPP, + .vl_sync = 0, + .vl_tft = 1, + .vl_hsync_len = 5, + .vl_left_margin = 8, + .vl_right_margin = 43, + .vl_vsync_len = 10, + .vl_upper_margin = 4, + .vl_lower_margin = 12, + .mmio = ATMEL_BASE_LCDC, +}; + +void lcd_enable(void) +{ + at91_set_pio_output(AT91_PIO_PORTC, 25, 0); /* power up */ +} + +void lcd_disable(void) +{ + at91_set_pio_output(AT91_PIO_PORTC, 25, 1); /* power down */ +} + +#ifdef CONFIG_LCD_INFO +void lcd_show_board_info(void) +{ + ulong dram_size, nand_size; + int i; + char temp[32]; + + lcd_printf("%s\n", U_BOOT_VERSION); + lcd_printf("ATMEL Corp\n"); + lcd_printf("at91@atmel.com\n"); + lcd_printf("%s CPU at %s MHz\n", + ATMEL_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 +#include <spi.h> +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 0: + at91_set_pio_output(AT91_PIO_PORTA, 14, 0); + break; + case 1: + at91_set_pio_output(AT91_PIO_PORTA, 7, 0); + break; + } +} + +void spi_cs_deactivate(struct spi_slave *slave) +{ + switch (slave->cs) { + case 0: + at91_set_pio_output(AT91_PIO_PORTA, 14, 1); + break; + case 1: + at91_set_pio_output(AT91_PIO_PORTA, 7, 1); + break; + } +} +#endif /* CONFIG_ATMEL_SPI */ + +#ifdef CONFIG_GENERIC_ATMEL_MCI +int board_mmc_init(bd_t *bd) +{ + at91_mci_hw_init(); + + return atmel_mci_init((void *)ATMEL_BASE_HSMCI0); +} +#endif + +int board_early_init_f(void) +{ + /* Enable clocks for all PIOs */ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + writel((1 << ATMEL_ID_PIOAB) | (1 << ATMEL_ID_PIOCD), &pmc->pcer); + + at91_seriald_hw_init(); + return 0; +} + +int board_init(void) +{ + /* adress of boot parameters */ + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; + +#ifdef CONFIG_NAND_ATMEL + at91sam9n12ek_nand_hw_init(); +#endif + +#ifdef CONFIG_ATMEL_SPI + at91_spi0_hw_init(1 << 0); +#endif + +#ifdef CONFIG_LCD + at91_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; +} |