diff options
Diffstat (limited to 'arch/arm/boards/at91sam9261ek/init.c')
| -rw-r--r-- | arch/arm/boards/at91sam9261ek/init.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/arch/arm/boards/at91sam9261ek/init.c b/arch/arm/boards/at91sam9261ek/init.c new file mode 100644 index 0000000000..576a022434 --- /dev/null +++ b/arch/arm/boards/at91sam9261ek/init.c @@ -0,0 +1,174 @@ +/* + * Copyright (C) 2007 Sascha Hauer, Pengutronix + * + * 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 <net.h> +#include <init.h> +#include <environment.h> +#include <asm/armlinux.h> +#include <generated/mach-types.h> +#include <partition.h> +#include <fs.h> +#include <fcntl.h> +#include <asm/io.h> +#include <asm/hardware.h> +#include <nand.h> +#include <linux/mtd/nand.h> +#include <mach/at91_pmc.h> +#include <mach/board.h> +#include <mach/gpio.h> +#include <mach/io.h> +#include <mach/at91sam9_smc.h> +#include <mach/sam9_smc.h> +#include <dm9000.h> + +static struct atmel_nand_data nand_pdata = { + .ale = 22, + .cle = 21, +/* .det_pin = ... not connected */ + .rdy_pin = AT91_PIN_PC15, + .enable_pin = AT91_PIN_PC14, +#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16) + .bus_width_16 = 1, +#else + .bus_width_16 = 0, +#endif +}; + +static struct sam9_smc_config ek_nand_smc_config = { + .ncs_read_setup = 0, + .nrd_setup = 1, + .ncs_write_setup = 0, + .nwe_setup = 1, + + .ncs_read_pulse = 3, + .nrd_pulse = 3, + .ncs_write_pulse = 3, + .nwe_pulse = 3, + + .read_cycle = 5, + .write_cycle = 5, + + .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE, + .tdf_cycles = 2, +}; + +static void ek_add_device_nand(void) +{ + /* setup bus-width (8 or 16) */ + if (nand_pdata.bus_width_16) + ek_nand_smc_config.mode |= AT91_SMC_DBW_16; + else + ek_nand_smc_config.mode |= AT91_SMC_DBW_8; + + /* configure chip-select 3 (NAND) */ + sam9_smc_configure(3, &ek_nand_smc_config); + + at91_add_device_nand(&nand_pdata); +} + +/* + * DM9000 ethernet device + */ +#if defined(CONFIG_DRIVER_NET_DM9000) +static struct dm9000_platform_data dm9000_data = { + .iobase = AT91_CHIPSELECT_2, + .iodata = AT91_CHIPSELECT_2 + 4, + .buswidth = DM9000_WIDTH_16, + .srom = 0, +}; + +static struct device_d dm9000_dev = { + .id = 0, + .name = "dm9000", + .map_base = AT91_CHIPSELECT_2, + .size = 8, + .platform_data = &dm9000_data, +}; + +/* + * SMC timings for the DM9000. + * Note: These timings were calculated for MASTER_CLOCK = 100000000 according to the DM9000 timings. + */ +static struct sam9_smc_config __initdata dm9000_smc_config = { + .ncs_read_setup = 0, + .nrd_setup = 2, + .ncs_write_setup = 0, + .nwe_setup = 2, + + .ncs_read_pulse = 8, + .nrd_pulse = 4, + .ncs_write_pulse = 8, + .nwe_pulse = 4, + + .read_cycle = 16, + .write_cycle = 16, + + .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16, + .tdf_cycles = 1, +}; + +static void __init ek_add_device_dm9000(void) +{ + /* Configure chip-select 2 (DM9000) */ + sam9_smc_configure(2, &dm9000_smc_config); + + /* Configure Reset signal as output */ + at91_set_gpio_output(AT91_PIN_PC10, 0); + + /* Configure Interrupt pin as input, no pull-up */ + at91_set_gpio_input(AT91_PIN_PC11, 0); + + register_device(&dm9000_dev); +} +#else +static void __init ek_add_device_dm9000(void) {} +#endif /* CONFIG_DRIVER_NET_DM9000 */ + +static int at91sam9261ek_devices_init(void) +{ + + at91_add_device_sdram(64 * 1024 * 1024); + ek_add_device_nand(); + ek_add_device_dm9000(); + + devfs_add_partition("nand0", 0x00000, 0x80000, PARTITION_FIXED, "self_raw"); + dev_add_bb_dev("self_raw", "self0"); + devfs_add_partition("nand0", 0x40000, 0x40000, PARTITION_FIXED, "env_raw"); + dev_add_bb_dev("env_raw", "env0"); + + armlinux_set_bootparams((void *)(AT91_CHIPSELECT_1 + 0x100)); + if (machine_is_at91sam9g10ek()) + armlinux_set_architecture(MACH_TYPE_AT91SAM9G10EK); + else + armlinux_set_architecture(MACH_TYPE_AT91SAM9261EK); + + return 0; +} + +device_initcall(at91sam9261ek_devices_init); + +static int at91sam9261ek_console_init(void) +{ + at91_register_uart(0, 0); + return 0; +} + +console_initcall(at91sam9261ek_console_init); |