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Diffstat (limited to 'board/emk/top9000/top9000.c')
| -rw-r--r-- | board/emk/top9000/top9000.c | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/board/emk/top9000/top9000.c b/board/emk/top9000/top9000.c new file mode 100644 index 0000000..b0fe2d6 --- /dev/null +++ b/board/emk/top9000/top9000.c @@ -0,0 +1,290 @@ +/* + * (C) Copyright 2007-2008 + * Stelian Pop <stelian.pop@leadtechdesign.com> + * Lead Tech Design <www.leadtechdesign.com> + * + * (C) Copyright 2010 + * Reinhard Meyer, EMK Elektronik, reinhard.meyer@emk-elektronik.de + * + * 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 <net.h> +#include <netdev.h> +#include <mmc.h> +#include <i2c.h> +#include <spi.h> +#include <asm/arch/at91sam9260.h> +#include <asm/arch/at91sam9260_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_shdwn.h> +#include <asm/arch/gpio.h> +#include <asm/arch/io.h> +#include <asm/arch/hardware.h> + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_CMD_NAND +static void nand_hw_init(void) +{ + unsigned long csa; + + /* Enable CS3 */ + csa = at91_sys_read(AT91_MATRIX_EBICSA); + at91_sys_write(AT91_MATRIX_EBICSA, + csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA); + + /* Configure SMC CS3 for NAND/SmartMedia */ + at91_sys_write(AT91_SMC_SETUP(3), + AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0) | + AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0)); + at91_sys_write(AT91_SMC_PULSE(3), + AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) | + AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3)); + at91_sys_write(AT91_SMC_CYCLE(3), + AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5)); + at91_sys_write(AT91_SMC_MODE(3), + AT91_SMC_READMODE | AT91_SMC_WRITEMODE | + AT91_SMC_EXNWMODE_DISABLE | + AT91_SMC_DBW_8 | + AT91_SMC_TDF_(2)); + + /* 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); +} +#endif + +#ifdef CONFIG_MACB +static void macb_hw_init(void) +{ + /* Enable EMAC clock */ + at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC); + + /* Initialize EMAC=MACB hardware */ + at91_macb_hw_init(); +} +#endif + +#ifdef CONFIG_GENERIC_ATMEL_MCI +/* this is a weak define that we are overriding */ +int board_mmc_init(bd_t *bd) +{ + /* Enable MCI clock */ + at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_MCI); + + /* Initialize MCI hardware */ + at91_mci_hw_init(); + + /* This calls the atmel_mmc_init in gen_atmel_mci.c */ + return atmel_mci_init((void *)AT91_BASE_MCI); +} + +/* this is a weak define that we are overriding */ +int board_mmc_getcd(u8 *cd, struct mmc *mmc) +{ + /* + * the only currently existing use of this function + * (fsl_esdhc.c) suggests this function must return + * *cs = TRUE if a card is NOT detected -> in most + * cases the value of the pin when the detect switch + * closes to GND + */ + *cd = at91_get_gpio_value(CONFIG_SYS_MMC_CD_PIN) ? 1 : 0; + return 0; +} + +#endif + +int board_early_init_f(void) +{ + at91_shdwn_t *shdwn = (at91_shdwn_t *)AT91_SHDWN_BASE; + + /* + * make sure the board can be powered on by + * any transition on WKUP + */ + writel(AT91_SHDW_MR_WKMODE0H2L | AT91_SHDW_MR_WKMODE0L2H, + &shdwn->mr); + + /* Enable clocks for all PIOs */ + at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOA); + at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOB); + at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC); + + /* set SCL0 and SDA0 to open drain */ + at91_set_pio_output(I2C0_PORT, SCL0_PIN, 1); + at91_set_pio_multi_drive(I2C0_PORT, SCL0_PIN, 1); + at91_set_pio_pullup(I2C0_PORT, SCL0_PIN, 1); + at91_set_pio_output(I2C0_PORT, SDA0_PIN, 1); + at91_set_pio_multi_drive(I2C0_PORT, SDA0_PIN, 1); + at91_set_pio_pullup(I2C0_PORT, SDA0_PIN, 1); + + /* set SCL1 and SDA1 to open drain */ + at91_set_pio_output(I2C1_PORT, SCL1_PIN, 1); + at91_set_pio_multi_drive(I2C1_PORT, SCL1_PIN, 1); + at91_set_pio_pullup(I2C1_PORT, SCL1_PIN, 1); + at91_set_pio_output(I2C1_PORT, SDA1_PIN, 1); + at91_set_pio_multi_drive(I2C1_PORT, SDA1_PIN, 1); + at91_set_pio_pullup(I2C1_PORT, SDA1_PIN, 1); + return 0; +} + +int board_init(void) +{ + /* arch number of TOP9000 Board */ + gd->bd->bi_arch_number = MACH_TYPE_TOP9000; + /* adress of boot parameters */ + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; + + at91_serial_hw_init(); +#ifdef CONFIG_CMD_NAND + nand_hw_init(); +#endif +#ifdef CONFIG_MACB + macb_hw_init(); +#endif +#ifdef CONFIG_ATMEL_SPI0 + /* (n+4) denotes to use nSPISEL(0) in GPIO mode! */ + at91_spi0_hw_init(1 << (FRAM_CS_NUM + 4)); +#endif +#ifdef CONFIG_ATMEL_SPI1 + at91_spi1_hw_init(1 << (ENC_CS_NUM + 4)); +#endif + return 0; +} + +#ifdef CONFIG_MISC_INIT_R +int misc_init_r(void) +{ + /* read 'factory' part of EEPROM */ + read_factory_r(); + return 0; +} +#endif + +int dram_init(void) +{ + gd->ram_size = get_ram_size( + (void *)CONFIG_SYS_SDRAM_BASE, + CONFIG_SYS_SDRAM_SIZE); + return 0; +} + +#ifdef CONFIG_RESET_PHY_R +void reset_phy(void) +{ + /* + * Initialize ethernet HW addresses prior to starting Linux, + * needed for nfsroot. + * TODO: We need to investigate if that is really necessary. + */ + eth_init(gd->bd); +} +#endif + +int board_eth_init(bd_t *bis) +{ + int rc = 0; + int num = 0; +#ifdef CONFIG_MACB + rc = macb_eth_initialize(0, + (void *)AT91_EMAC_BASE, + CONFIG_SYS_PHY_ID); + if (!rc) + num++; +#endif +#ifdef CONFIG_ENC28J60 + rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM, + ENC_SPI_CLOCK, SPI_MODE_0); + if (!rc) + num++; +# ifdef CONFIG_ENC28J60_2 + rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+1, + ENC_SPI_CLOCK, SPI_MODE_0); + if (!rc) + num++; +# ifdef CONFIG_ENC28J60_3 + rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+2, + ENC_SPI_CLOCK, SPI_MODE_0); + if (!rc) + num++; +# endif +# endif +#endif + return num; +} + +/* + * I2C access functions + * + * Note: + * We need to access Bus 0 before relocation to access the + * environment settings. + * However i2c_get_bus_num() cannot be called before + * relocation. + */ +#ifdef CONFIG_SOFT_I2C +void iic_init(void) +{ + /* ports are now initialized in board_early_init_f() */ +} + +int iic_read(void) +{ + switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) { + case 0: + return at91_get_pio_value(I2C0_PORT, SDA0_PIN); + case 1: + return at91_get_pio_value(I2C1_PORT, SDA1_PIN); + } + return 1; +} + +void iic_sda(int bit) +{ + switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) { + case 0: + at91_set_pio_value(I2C0_PORT, SDA0_PIN, bit); + break; + case 1: + at91_set_pio_value(I2C1_PORT, SDA1_PIN, bit); + break; + } +} + +void iic_scl(int bit) +{ + switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) { + case 0: + at91_set_pio_value(I2C0_PORT, SCL0_PIN, bit); + break; + case 1: + at91_set_pio_value(I2C1_PORT, SCL1_PIN, bit); + break; + } +} + +#endif |