5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <asm/processor.h>
29 DECLARE_GLOBAL_DATA_PTR;
31 extern void lxt971_no_sleep(void);
33 /* fpga configuration data - not compressed, generated by bin2c */
34 const unsigned char fpgadata[] =
38 int filesize = sizeof(fpgadata);
41 int board_early_init_f (void)
44 * IRQ 0-15 405GP internally generated; active high; level sensitive
45 * IRQ 16 405GP internally generated; active low; level sensitive
47 * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
48 * IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive
49 * IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive
50 * IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive
51 * IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive
52 * IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
53 * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
55 mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
56 mtdcr(uicer, 0x00000000); /* disable all ints */
57 mtdcr(uiccr, 0x00000000); /* set all to be non-critical*/
58 mtdcr(uicpr, 0xFFFFFF80); /* set int polarities */
59 mtdcr(uictr, 0x10000000); /* set int trigger levels */
60 mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority*/
61 mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
64 * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
66 mtebc (epcr, 0xa8400000); /* ebc always driven */
69 * Reset CPLD via GPIO12 (CS3) pin
71 out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_PLD_RESET);
72 udelay(1000); /* wait 1ms */
73 out32(GPIO0_OR, in32(GPIO0_OR) | CFG_PLD_RESET);
74 udelay(1000); /* wait 1ms */
80 /* ------------------------------------------------------------------------- */
82 int misc_init_f (void)
84 return 0; /* dummy implementation */
88 int misc_init_r (void)
90 /* adjust flash start and offset */
91 gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
92 gd->bd->bi_flashoffset = 0;
95 * Setup and enable EEPROM write protection
97 out32(GPIO0_OR, in32(GPIO0_OR) | CFG_EEPROM_WP);
100 * Set NAND-FLASH GPIO signals to default
102 out32(GPIO0_OR, in32(GPIO0_OR) & ~(CFG_NAND_CLE | CFG_NAND_ALE));
103 out32(GPIO0_OR, in32(GPIO0_OR) | CFG_NAND_CE);
110 * Check Board Identity:
113 int checkboard (void)
118 volatile unsigned char *led_reg = (unsigned char *)((ulong)CFG_PLD_BASE + 0x1000);
119 volatile unsigned char *ver_reg = (unsigned char *)((ulong)CFG_PLD_BASE + 0x1001);
123 if (getenv_r("serial#", str, sizeof(str)) == -1) {
124 puts ("### No HW ID - assuming CMS700");
129 printf(" (PLD-Version=%02d)\n", *ver_reg);
134 for (flashcnt = 0; flashcnt < 3; flashcnt++) {
135 *led_reg = 0x00; /* LEDs off */
136 for (delay = 0; delay < 100; delay++)
138 *led_reg = 0x0f; /* LEDs on */
139 for (delay = 0; delay < 50; delay++)
147 /* ------------------------------------------------------------------------- */
149 long int initdram (int board_type)
153 mtdcr(memcfga, mem_mb0cf);
154 val = mfdcr(memcfgd);
157 printf("\nmb0cf=%x\n", val); /* test-only */
158 printf("strap=%x\n", mfdcr(strap)); /* test-only */
161 return (4*1024*1024 << ((val & 0x000e0000) >> 17));
164 /* ------------------------------------------------------------------------- */
166 #if defined(CFG_EEPROM_WREN)
167 /* Input: <dev_addr> I2C address of EEPROM device to enable.
168 * <state> -1: deliver current state
171 * Returns: -1: wrong device address
172 * 0: dis-/en- able done
173 * 0/1: current state if <state> was -1.
175 int eeprom_write_enable (unsigned dev_addr, int state)
177 if (CFG_I2C_EEPROM_ADDR != dev_addr) {
182 /* Enable write access, clear bit GPIO_SINT2. */
183 out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_EEPROM_WP);
187 /* Disable write access, set bit GPIO_SINT2. */
188 out32(GPIO0_OR, in32(GPIO0_OR) | CFG_EEPROM_WP);
192 /* Read current status back. */
193 state = (0 == (in32(GPIO0_OR) & CFG_EEPROM_WP));
200 int do_eep_wren (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
202 int query = argc == 1;
206 /* Query write access state. */
207 state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, -1);
209 puts ("Query of write access state failed.\n");
211 printf ("Write access for device 0x%0x is %sabled.\n",
212 CFG_I2C_EEPROM_ADDR, state ? "en" : "dis");
216 if ('0' == argv[1][0]) {
217 /* Disable write access. */
218 state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, 0);
220 /* Enable write access. */
221 state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, 1);
224 puts ("Setup of write access state failed.\n");
231 U_BOOT_CMD(eepwren, 2, 0, do_eep_wren,
232 "eepwren - Enable / disable / query EEPROM write access\n",
234 #endif /* #if defined(CFG_EEPROM_WREN) */
236 /* ------------------------------------------------------------------------- */
238 #if defined(CONFIG_CMD_NAND)
239 #include <linux/mtd/nand_legacy.h>
240 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
244 nand_probe(CFG_NAND_BASE);
245 if (nand_dev_desc[0].ChipID != NAND_ChipID_UNKNOWN) {
246 print_size(nand_dev_desc[0].totlen, "\n");
253 #ifdef CONFIG_LXT971_NO_SLEEP
256 * Disable sleep mode in LXT971