* (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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#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);
-/* fpga configuration data - not compressed, generated by bin2c */
-const unsigned char fpgadata[] =
+/*
+ * generate a short spike on the CAN tx line
+ * to bring the couplers in sync
+ */
+void init_coupler(u32 addr)
{
-#include "fpgadata.c"
-};
-int filesize = sizeof(fpgadata);
-
+ 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 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
* IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
*/
- mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
- mtdcr(uicer, 0x00000000); /* disable all ints */
- mtdcr(uiccr, 0x00000000); /* set all to be non-critical*/
- mtdcr(uicpr, 0xFFFFFF80); /* set int polarities */
- mtdcr(uictr, 0x10000000); /* set int trigger levels */
- mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority*/
- mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
+ 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 (epcr, 0xa8400000); /* ebc always driven */
+ mtebc (EBC0_CFG, 0xa8400000); /* ebc always driven */
/*
* Reset CPLD via GPIO12 (CS3) pin
*/
- out32(GPIO0_OR, in32(GPIO0_OR) & ~(0x80000000 >> 12));
+ out_be32((void *)GPIO0_OR,
+ in_be32((void *)GPIO0_OR) & ~(0x80000000 >> 12));
udelay(1000); /* wait 1ms */
- out32(GPIO0_OR, in32(GPIO0_OR) | (0x80000000 >> 12));
+ 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_r ("serial#", str, sizeof(str));
+ int i = getenv_f("serial#", str, sizeof(str));
int flashcnt;
int delay;
- volatile unsigned char *led_reg = (unsigned char *)((ulong)CAN_BA + 0x1000);
+ u8 *led_reg = (u8 *)(CAN_BA + 0x1000);
puts ("Board: ");
puts(str);
}
- printf(" (PLD-Version=%02d)\n", *led_reg);
+ printf(" (PLD-Version=%02d)\n", in_8(led_reg));
/*
* Flash LEDs
*/
for (flashcnt = 0; flashcnt < 3; flashcnt++) {
- *led_reg = 0x40; /* LED_B..D off */
+ out_8(led_reg, 0x40); /* LED_B..D off */
for (delay = 0; delay < 100; delay++)
udelay(1000);
- *led_reg = 0x47; /* LED_B..D on */
+ out_8(led_reg, 0x47); /* LED_B..D on */
for (delay = 0; delay < 50; delay++)
udelay(1000);
}
- *led_reg = 0x40;
+ out_8(led_reg, 0x40);
return 0;
}
-/* ------------------------------------------------------------------------- */
-
-long int initdram (int board_type)
-{
- unsigned long val;
-
- mtdcr(memcfga, mem_mb0cf);
- val = mfdcr(memcfgd);
-
-#if 0
- printf("\nmb0cf=%x\n", val); /* test-only */
- printf("strap=%x\n", mfdcr(strap)); /* test-only */
-#endif
-
- return (4*1024*1024 << ((val & 0x000e0000) >> 17));
-}
-
-/* ------------------------------------------------------------------------- */
-
void reset_phy(void)
{
#ifdef CONFIG_LXT971_NO_SLEEP