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1 | /* | |
2 | * (C) Copyright 2005-2007 | |
3 | * Matthias Fuchs, esd gmbh germany, matthias.fuchs@esd-electronics.com | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
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, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include <common.h> | |
25 | #include <asm/processor.h> | |
26 | #include <asm/io.h> | |
27 | #include <command.h> | |
28 | #include <malloc.h> | |
29 | ||
30 | DECLARE_GLOBAL_DATA_PTR; | |
31 | ||
32 | extern void lxt971_no_sleep(void); | |
33 | ||
34 | /* fpga configuration data - not compressed, generated by bin2c */ | |
35 | const unsigned char fpgadata[] = | |
36 | { | |
37 | #include "fpgadata.c" | |
38 | }; | |
39 | int filesize = sizeof(fpgadata); | |
40 | ||
41 | ||
42 | int board_early_init_f (void) | |
43 | { | |
44 | /* | |
45 | * IRQ 0-15 405GP internally generated; active high; level sensitive | |
46 | * IRQ 16 405GP internally generated; active low; level sensitive | |
47 | * IRQ 17-24 RESERVED | |
48 | * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive | |
49 | * IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive | |
50 | * IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive | |
51 | * IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive | |
52 | * IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive | |
53 | * IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive | |
54 | * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive | |
55 | */ | |
56 | mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ | |
57 | mtdcr(uicer, 0x00000000); /* disable all ints */ | |
58 | mtdcr(uiccr, 0x00000000); /* set all to be non-critical*/ | |
59 | mtdcr(uicpr, 0xFFFFFF80); /* set int polarities */ | |
60 | mtdcr(uictr, 0x10000000); /* set int trigger levels */ | |
61 | mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority*/ | |
62 | mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ | |
63 | ||
64 | /* | |
65 | * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us | |
66 | */ | |
67 | mtebc (epcr, 0xa8400000); /* ebc always driven */ | |
68 | ||
69 | /* | |
70 | * Reset CPLD via GPIO12 (CS3) pin | |
71 | */ | |
72 | out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CONFIG_SYS_PLD_RESET); | |
73 | udelay(1000); /* wait 1ms */ | |
74 | out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CONFIG_SYS_PLD_RESET); | |
75 | udelay(1000); /* wait 1ms */ | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
80 | int misc_init_r (void) | |
81 | { | |
82 | /* adjust flash start and offset */ | |
83 | gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize; | |
84 | gd->bd->bi_flashoffset = 0; | |
85 | ||
86 | /* | |
87 | * Setup and enable EEPROM write protection | |
88 | */ | |
89 | out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CONFIG_SYS_EEPROM_WP); | |
90 | ||
91 | return (0); | |
92 | } | |
93 | ||
94 | ||
95 | /* | |
96 | * Check Board Identity: | |
97 | */ | |
98 | ||
99 | int checkboard (void) | |
100 | { | |
101 | char str[64]; | |
102 | int flashcnt; | |
103 | int delay; | |
104 | volatile unsigned char *led_reg = (unsigned char *)((ulong)CONFIG_SYS_PLD_BASE + 0x1000); | |
105 | volatile unsigned char *ver_reg = (unsigned char *)((ulong)CONFIG_SYS_PLD_BASE + 0x1001); | |
106 | ||
107 | puts ("Board: "); | |
108 | ||
109 | if (getenv_r("serial#", str, sizeof(str)) == -1) { | |
110 | puts ("### No HW ID - assuming CMS700"); | |
111 | } else { | |
112 | puts(str); | |
113 | } | |
114 | ||
115 | printf(" (PLD-Version=%02d)\n", *ver_reg); | |
116 | ||
117 | /* | |
118 | * Flash LEDs | |
119 | */ | |
120 | for (flashcnt = 0; flashcnt < 3; flashcnt++) { | |
121 | *led_reg = 0x00; /* LEDs off */ | |
122 | for (delay = 0; delay < 100; delay++) | |
123 | udelay(1000); | |
124 | *led_reg = 0x0f; /* LEDs on */ | |
125 | for (delay = 0; delay < 50; delay++) | |
126 | udelay(1000); | |
127 | } | |
128 | *led_reg = 0x70; | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | /* ------------------------------------------------------------------------- */ | |
134 | ||
135 | #if defined(CONFIG_SYS_EEPROM_WREN) | |
136 | /* Input: <dev_addr> I2C address of EEPROM device to enable. | |
137 | * <state> -1: deliver current state | |
138 | * 0: disable write | |
139 | * 1: enable write | |
140 | * Returns: -1: wrong device address | |
141 | * 0: dis-/en- able done | |
142 | * 0/1: current state if <state> was -1. | |
143 | */ | |
144 | int eeprom_write_enable (unsigned dev_addr, int state) | |
145 | { | |
146 | if (CONFIG_SYS_I2C_EEPROM_ADDR != dev_addr) { | |
147 | return -1; | |
148 | } else { | |
149 | switch (state) { | |
150 | case 1: | |
151 | /* Enable write access, clear bit GPIO_SINT2. */ | |
152 | out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CONFIG_SYS_EEPROM_WP); | |
153 | state = 0; | |
154 | break; | |
155 | case 0: | |
156 | /* Disable write access, set bit GPIO_SINT2. */ | |
157 | out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CONFIG_SYS_EEPROM_WP); | |
158 | state = 0; | |
159 | break; | |
160 | default: | |
161 | /* Read current status back. */ | |
162 | state = (0 == (in_be32((void *)GPIO0_OR) & CONFIG_SYS_EEPROM_WP)); | |
163 | break; | |
164 | } | |
165 | } | |
166 | return state; | |
167 | } | |
168 | ||
169 | int do_eep_wren (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
170 | { | |
171 | int query = argc == 1; | |
172 | int state = 0; | |
173 | ||
174 | if (query) { | |
175 | /* Query write access state. */ | |
176 | state = eeprom_write_enable (CONFIG_SYS_I2C_EEPROM_ADDR, -1); | |
177 | if (state < 0) { | |
178 | puts ("Query of write access state failed.\n"); | |
179 | } else { | |
180 | printf ("Write access for device 0x%0x is %sabled.\n", | |
181 | CONFIG_SYS_I2C_EEPROM_ADDR, state ? "en" : "dis"); | |
182 | state = 0; | |
183 | } | |
184 | } else { | |
185 | if ('0' == argv[1][0]) { | |
186 | /* Disable write access. */ | |
187 | state = eeprom_write_enable (CONFIG_SYS_I2C_EEPROM_ADDR, 0); | |
188 | } else { | |
189 | /* Enable write access. */ | |
190 | state = eeprom_write_enable (CONFIG_SYS_I2C_EEPROM_ADDR, 1); | |
191 | } | |
192 | if (state < 0) { | |
193 | puts ("Setup of write access state failed.\n"); | |
194 | } | |
195 | } | |
196 | ||
197 | return state; | |
198 | } | |
199 | ||
200 | U_BOOT_CMD(eepwren, 2, 0, do_eep_wren, | |
201 | "eepwren - Enable / disable / query EEPROM write access\n", | |
202 | NULL); | |
203 | #endif /* #if defined(CONFIG_SYS_EEPROM_WREN) */ | |
204 | ||
205 | /* ------------------------------------------------------------------------- */ | |
206 | ||
207 | void reset_phy(void) | |
208 | { | |
209 | #ifdef CONFIG_LXT971_NO_SLEEP | |
210 | ||
211 | /* | |
212 | * Disable sleep mode in LXT971 | |
213 | */ | |
214 | lxt971_no_sleep(); | |
215 | #endif | |
216 | } |