diff options
Diffstat (limited to 'u-boot/board/esd/vom405/vom405.c')
| -rw-r--r-- | u-boot/board/esd/vom405/vom405.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/u-boot/board/esd/vom405/vom405.c b/u-boot/board/esd/vom405/vom405.c new file mode 100644 index 0000000..f665a3e --- /dev/null +++ b/u-boot/board/esd/vom405/vom405.c @@ -0,0 +1,164 @@ +/* + * (C) Copyright 2001-2004 + * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.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/processor.h> +#include <asm/io.h> +#include <command.h> +#include <malloc.h> +#include <sja1000.h> + +DECLARE_GLOBAL_DATA_PTR; + +extern void lxt971_no_sleep(void); + +/* + * generate a short spike on the CAN tx line + * to bring the couplers in sync + */ +void init_coupler(u32 addr) +{ + struct sja1000_basic_s *ctrl = (struct sja1000_basic_s *)addr; + + /* reset */ + out_8(&ctrl->cr, CR_RR); + + /* dominant */ + out_8(&ctrl->btr0, 0x00); /* btr setup is required */ + out_8(&ctrl->btr1, 0x14); /* we use 1Mbit/s */ + out_8(&ctrl->oc, OC_TP1 | OC_TN1 | OC_POL1 | + OC_TP0 | OC_TN0 | OC_POL0 | OC_MODE1); + out_8(&ctrl->cr, 0x00); + + /* delay */ + in_8(&ctrl->cr); + in_8(&ctrl->cr); + in_8(&ctrl->cr); + in_8(&ctrl->cr); + + /* reset */ + out_8(&ctrl->cr, CR_RR); +} + +int board_early_init_f (void) +{ + /* + * IRQ 0-15 405GP internally generated; active high; level sensitive + * IRQ 16 405GP internally generated; active low; level sensitive + * IRQ 17-24 RESERVED + * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive + * IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive + * IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive + * IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive + * IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive + * IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive + * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive + */ + mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */ + mtdcr(UIC0ER, 0x00000000); /* disable all ints */ + mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical*/ + mtdcr(UIC0PR, 0xFFFFFF80); /* set int polarities */ + mtdcr(UIC0TR, 0x10000000); /* set int trigger levels */ + mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority*/ + mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */ + + /* + * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us + */ + mtebc (EBC0_CFG, 0xa8400000); /* ebc always driven */ + + /* + * Reset CPLD via GPIO12 (CS3) pin + */ + out_be32((void *)GPIO0_OR, + in_be32((void *)GPIO0_OR) & ~(0x80000000 >> 12)); + udelay(1000); /* wait 1ms */ + out_be32((void *)GPIO0_OR, + in_be32((void *)GPIO0_OR) | (0x80000000 >> 12)); + udelay(1000); /* wait 1ms */ + + return 0; +} + +int misc_init_r (void) +{ + /* adjust flash start and offset */ + gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize; + gd->bd->bi_flashoffset = 0; + + /* + * Init magnetic coupler + */ + if (!getenv("noinitcoupler")) + init_coupler(CAN_BA); + + return (0); +} + +/* + * Check Board Identity: + */ +int checkboard (void) +{ + char str[64]; + int i = getenv_f("serial#", str, sizeof(str)); + int flashcnt; + int delay; + u8 *led_reg = (u8 *)(CAN_BA + 0x1000); + + puts ("Board: "); + + if (i == -1) { + puts ("### No HW ID - assuming VOM405"); + } else { + puts(str); + } + + printf(" (PLD-Version=%02d)\n", in_8(led_reg)); + + /* + * Flash LEDs + */ + for (flashcnt = 0; flashcnt < 3; flashcnt++) { + out_8(led_reg, 0x40); /* LED_B..D off */ + for (delay = 0; delay < 100; delay++) + udelay(1000); + out_8(led_reg, 0x47); /* LED_B..D on */ + for (delay = 0; delay < 50; delay++) + udelay(1000); + } + out_8(led_reg, 0x40); + + return 0; +} + +void reset_phy(void) +{ +#ifdef CONFIG_LXT971_NO_SLEEP + + /* + * Disable sleep mode in LXT971 + */ + lxt971_no_sleep(); +#endif +} |