2 * (C) Copyright 2001-2004
3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
5 * SPDX-License-Identifier: GPL-2.0+
9 #include <asm/processor.h>
15 DECLARE_GLOBAL_DATA_PTR;
17 extern void lxt971_no_sleep(void);
20 * generate a short spike on the CAN tx line
21 * to bring the couplers in sync
23 void init_coupler(u32 addr)
25 struct sja1000_basic_s *ctrl = (struct sja1000_basic_s *)addr;
28 out_8(&ctrl->cr, CR_RR);
31 out_8(&ctrl->btr0, 0x00); /* btr setup is required */
32 out_8(&ctrl->btr1, 0x14); /* we use 1Mbit/s */
33 out_8(&ctrl->oc, OC_TP1 | OC_TN1 | OC_POL1 |
34 OC_TP0 | OC_TN0 | OC_POL0 | OC_MODE1);
35 out_8(&ctrl->cr, 0x00);
44 out_8(&ctrl->cr, CR_RR);
47 int board_early_init_f (void)
50 * IRQ 0-15 405GP internally generated; active high; level sensitive
51 * IRQ 16 405GP internally generated; active low; level sensitive
53 * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
54 * IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive
55 * IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive
56 * IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive
57 * IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive
58 * IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
59 * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
61 mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
62 mtdcr(UIC0ER, 0x00000000); /* disable all ints */
63 mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical*/
64 mtdcr(UIC0PR, 0xFFFFFF80); /* set int polarities */
65 mtdcr(UIC0TR, 0x10000000); /* set int trigger levels */
66 mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority*/
67 mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
70 * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
72 mtebc (EBC0_CFG, 0xa8400000); /* ebc always driven */
75 * Reset CPLD via GPIO12 (CS3) pin
77 out_be32((void *)GPIO0_OR,
78 in_be32((void *)GPIO0_OR) & ~(0x80000000 >> 12));
79 udelay(1000); /* wait 1ms */
80 out_be32((void *)GPIO0_OR,
81 in_be32((void *)GPIO0_OR) | (0x80000000 >> 12));
82 udelay(1000); /* wait 1ms */
87 int misc_init_r (void)
89 /* adjust flash start and offset */
90 gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
91 gd->bd->bi_flashoffset = 0;
94 * Init magnetic coupler
96 if (!getenv("noinitcoupler"))
103 * Check Board Identity:
105 int checkboard (void)
108 int i = getenv_f("serial#", str, sizeof(str));
111 u8 *led_reg = (u8 *)(CAN_BA + 0x1000);
116 puts ("### No HW ID - assuming VOM405");
121 printf(" (PLD-Version=%02d)\n", in_8(led_reg));
126 for (flashcnt = 0; flashcnt < 3; flashcnt++) {
127 out_8(led_reg, 0x40); /* LED_B..D off */
128 for (delay = 0; delay < 100; delay++)
130 out_8(led_reg, 0x47); /* LED_B..D on */
131 for (delay = 0; delay < 50; delay++)
134 out_8(led_reg, 0x40);
141 #ifdef CONFIG_LXT971_NO_SLEEP
144 * Disable sleep mode in LXT971