diff options
Diffstat (limited to 'u-boot/board/esd/meesc/meesc.c')
| -rw-r--r-- | u-boot/board/esd/meesc/meesc.c | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/u-boot/board/esd/meesc/meesc.c b/u-boot/board/esd/meesc/meesc.c new file mode 100644 index 0000000..41fa3e1 --- /dev/null +++ b/u-boot/board/esd/meesc/meesc.c @@ -0,0 +1,283 @@ +/* + * (C) Copyright 2007-2008 + * Stelian Pop <stelian.pop@leadtechdesign.com> + * Lead Tech Design <www.leadtechdesign.com> + * + * (C) Copyright 2009-2010 + * Daniel Gorsulowski <daniel.gorsulowski@esd.eu> + * esd electronic system design gmbh <www.esd.eu> + * + * 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/arch/at91sam9263.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_matrix.h> +#include <asm/arch/at91_pio.h> +#include <asm/arch/clk.h> +#include <asm/arch/hardware.h> +#include <asm/arch/io.h> +#include <netdev.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * Miscelaneous platform dependent initialisations + */ + +static int hw_rev = -1; /* hardware revision */ + +int get_hw_rev(void) +{ + if (hw_rev >= 0) + return hw_rev; + + hw_rev = at91_get_pio_value(AT91_PIO_PORTB, 19); + hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 20) << 1; + hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 21) << 2; + hw_rev |= at91_get_pio_value(AT91_PIO_PORTB, 22) << 3; + + if (hw_rev == 15) + hw_rev = 0; + + return hw_rev; +} + +#ifdef CONFIG_CMD_NAND +static void meesc_nand_hw_init(void) +{ + unsigned long csa; + at91_smc_t *smc = (at91_smc_t *) AT91_SMC0_BASE; + at91_matrix_t *matrix = (at91_matrix_t *) AT91_MATRIX_BASE; + + /* Enable CS3 */ + csa = readl(&matrix->csa[0]) | AT91_MATRIX_CSA_EBI_CS3A; + writel(csa, &matrix->csa[0]); + + /* 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_EXNW_DISABLE | + AT91_SMC_MODE_DBW_8 | + AT91_SMC_MODE_TDF_CYCLE(2), + &smc->cs[3].mode); + + /* Configure RDY/BSY */ + at91_set_pio_input(CONFIG_SYS_NAND_READY_PIN, 1); + + /* Enable NandFlash */ + at91_set_pio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1); +} +#endif /* CONFIG_CMD_NAND */ + +#ifdef CONFIG_MACB +static void meesc_macb_hw_init(void) +{ + at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + /* Enable clock */ + writel(1 << AT91SAM9263_ID_EMAC, &pmc->pcer); + at91_macb_hw_init(); +} +#endif + +/* + * Static memory controller initialization to enable Beckhoff ET1100 EtherCAT + * controller debugging + * The ET1100 is located at physical address 0x70000000 + * Its process memory is located at physical address 0x70001000 + */ +static void meesc_ethercat_hw_init(void) +{ + at91_smc_t *smc1 = (at91_smc_t *) AT91_SMC1_BASE; + + /* Configure SMC EBI1_CS0 for EtherCAT */ + writel(AT91_SMC_SETUP_NWE(0) | AT91_SMC_SETUP_NCS_WR(0) | + AT91_SMC_SETUP_NRD(0) | AT91_SMC_SETUP_NCS_RD(0), + &smc1->cs[0].setup); + writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(9) | + AT91_SMC_PULSE_NRD(5) | AT91_SMC_PULSE_NCS_RD(9), + &smc1->cs[0].pulse); + writel(AT91_SMC_CYCLE_NWE(10) | AT91_SMC_CYCLE_NRD(6), + &smc1->cs[0].cycle); + /* + * Configure behavior at external wait signal, byte-select mode, 16 bit + * data bus width, none data float wait states and TDF optimization + */ + writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_EXNW_READY | + AT91_SMC_MODE_DBW_16 | AT91_SMC_MODE_TDF_CYCLE(0) | + AT91_SMC_MODE_TDF, &smc1->cs[0].mode); + + /* Configure RDY/BSY */ + at91_set_b_periph(AT91_PIO_PORTE, 20, 0); /* EBI1_NWAIT */ +} + +int dram_init(void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM; + gd->bd->bi_dram[0].size = get_ram_size((long *) PHYS_SDRAM, (1 << 27)); + return 0; +} + +int board_eth_init(bd_t *bis) +{ + int rc = 0; +#ifdef CONFIG_MACB + rc = macb_eth_initialize(0, (void *)AT91_EMAC_BASE, 0x00); +#endif + return rc; +} + +int checkboard(void) +{ + char str[32]; + u_char hw_type; /* hardware type */ + + /* read the "Type" register of the ET1100 controller */ + hw_type = readb(CONFIG_ET1100_BASE); + + switch (hw_type) { + case 0x11: + case 0x3F: + /* ET1100 present, arch number of MEESC-Board */ + gd->bd->bi_arch_number = MACH_TYPE_MEESC; + puts("Board: CAN-EtherCAT Gateway"); + break; + case 0xFF: + /* no ET1100 present, arch number of EtherCAN/2-Board */ + gd->bd->bi_arch_number = MACH_TYPE_ETHERCAN2; + puts("Board: EtherCAN/2 Gateway"); + /* switch on LED1D */ + at91_set_pio_output(AT91_PIO_PORTB, 12, 1); + break; + default: + /* assume, no ET1100 present, arch number of EtherCAN/2-Board */ + gd->bd->bi_arch_number = MACH_TYPE_ETHERCAN2; + printf("ERROR! Read invalid hw_type: %02X\n", hw_type); + puts("Board: EtherCAN/2 Gateway"); + break; + } + if (getenv_f("serial#", str, sizeof(str)) > 0) { + puts(", serial# "); + puts(str); + } + printf("\nHardware-revision: 1.%d\n", get_hw_rev()); + printf("Mach-type: %lu\n", gd->bd->bi_arch_number); + return 0; +} + +#ifdef CONFIG_SERIAL_TAG +void get_board_serial(struct tag_serialnr *serialnr) +{ + char *str; + + char *serial = getenv("serial#"); + if (serial) { + str = strchr(serial, '_'); + if (str && (strlen(str) >= 4)) { + serialnr->high = (*(str + 1) << 8) | *(str + 2); + serialnr->low = simple_strtoul(str + 3, NULL, 16); + } + } else { + serialnr->high = 0; + serialnr->low = 0; + } +} +#endif + +#ifdef CONFIG_REVISION_TAG +u32 get_board_rev(void) +{ + return hw_rev | 0x100; +} +#endif + +#ifdef CONFIG_MISC_INIT_R +int misc_init_r(void) +{ + char *str; + char buf[32]; + at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + + /* + * Normally the processor clock has a divisor of 2. + * In some cases this this needs to be set to 4. + * Check the user has set environment mdiv to 4 to change the divisor. + */ + if ((str = getenv("mdiv")) && (strcmp(str, "4") == 0)) { + writel((readl(&pmc->mckr) & ~AT91_PMC_MDIV) | + AT91SAM9_PMC_MDIV_4, &pmc->mckr); + at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK); + serial_setbrg(); + /* Notify the user that the clock is not default */ + printf("Setting master clock to %s MHz\n", + strmhz(buf, get_mck_clk_rate())); + } + + return 0; +} +#endif /* CONFIG_MISC_INIT_R */ + +int board_init(void) +{ + at91_pmc_t *pmc = (at91_pmc_t *) AT91_PMC_BASE; + + /* Peripheral Clock Enable Register */ + writel(1 << AT91SAM9263_ID_PIOA | + 1 << AT91SAM9263_ID_PIOB | + 1 << AT91SAM9263_ID_PIOCDE | + 1 << AT91SAM9263_ID_UHP, + &pmc->pcer); + + /* initialize ET1100 Controller */ + meesc_ethercat_hw_init(); + + /* adress of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + + at91_serial_hw_init(); +#ifdef CONFIG_CMD_NAND + meesc_nand_hw_init(); +#endif +#ifdef CONFIG_HAS_DATAFLASH + at91_spi0_hw_init(1 << 0); +#endif +#ifdef CONFIG_MACB + meesc_macb_hw_init(); +#endif +#ifdef CONFIG_AT91_CAN + at91_can_hw_init(); +#endif +#ifdef CONFIG_USB_OHCI_NEW + at91_uhp_hw_init(); +#endif + return 0; +} |