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7644f16f SR |
1 | /* |
2 | * (C) Copyright 2005 | |
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 <command.h> | |
27 | #include <malloc.h> | |
28 | ||
29 | int board_early_init_f (void) | |
30 | { | |
31 | unsigned long cntrl0Reg; | |
32 | ||
33 | /* | |
34 | * Setup GPIO pins (CS4 as GPIO) | |
35 | */ | |
36 | cntrl0Reg = mfdcr(cntrl0); | |
37 | mtdcr(cntrl0, cntrl0Reg | 0x00800000); | |
38 | ||
39 | out32(GPIO0_OR, CFG_INTA_FAKE | CFG_EEPROM_WP); /* set output pins to high */ | |
40 | out32(GPIO0_ODR, CFG_INTA_FAKE); /* INTA# is open drain */ | |
41 | out32(GPIO0_TCR, CFG_INTA_FAKE | CFG_EEPROM_WP); /* setup for output */ | |
42 | ||
43 | /* | |
44 | * IRQ 0-15 405GP internally generated; active high; level sensitive | |
45 | * IRQ 16 405GP internally generated; active low; level sensitive | |
46 | * IRQ 17-24 RESERVED | |
47 | * IRQ 25 (EXT IRQ 0) PB0; active low; level sensitive | |
48 | * IRQ 26 (EXT IRQ 1) PB1; active low; level sensitive | |
49 | * IRQ 27 (EXT IRQ 2) PCI SLOT 0; active low; level sensitive | |
50 | * IRQ 28 (EXT IRQ 3) PCI SLOT 1; active low; level sensitive | |
51 | * IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive | |
52 | * IRQ 30 (EXT IRQ 5) PCI SLOT 3; active low; level sensitive | |
53 | * IRQ 31 (EXT IRQ 6) unused | |
54 | */ | |
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, 0xFFFFFF81); /* set int polarities */ | |
59 | ||
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 | return 0; | |
65 | } | |
66 | ||
67 | ||
68 | int misc_init_f (void) | |
69 | { | |
70 | return 0; /* dummy implementation */ | |
71 | } | |
72 | ||
73 | ||
74 | int misc_init_r (void) | |
75 | { | |
76 | DECLARE_GLOBAL_DATA_PTR; | |
77 | unsigned long cntrl0Reg; | |
78 | ||
79 | /* adjust flash start and offset */ | |
80 | gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize; | |
81 | gd->bd->bi_flashoffset = 0; | |
82 | ||
83 | /* | |
84 | * Select cts (and not dsr) on uart1 | |
85 | */ | |
86 | cntrl0Reg = mfdcr(cntrl0); | |
87 | mtdcr(cntrl0, cntrl0Reg | 0x00001000); | |
88 | ||
89 | return (0); | |
90 | } | |
91 | ||
92 | ||
93 | /* | |
94 | * Check Board Identity: | |
95 | */ | |
96 | int checkboard (void) | |
97 | { | |
98 | unsigned char str[64]; | |
99 | int i = getenv_r ("serial#", str, sizeof(str)); | |
100 | ||
101 | puts ("Board: "); | |
102 | ||
103 | if (i == -1) { | |
104 | puts ("### No HW ID - assuming CPCI2DP"); | |
105 | } else { | |
106 | puts(str); | |
107 | } | |
108 | ||
109 | printf(" (Ver 1.0)"); | |
110 | ||
111 | putc ('\n'); | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | /* ------------------------------------------------------------------------- */ | |
117 | ||
118 | long int initdram (int board_type) | |
119 | { | |
120 | unsigned long val; | |
121 | ||
122 | mtdcr(memcfga, mem_mb0cf); | |
123 | val = mfdcr(memcfgd); | |
124 | ||
125 | return (4*1024*1024 << ((val & 0x000e0000) >> 17)); | |
126 | } | |
127 | ||
128 | /* ------------------------------------------------------------------------- */ | |
129 | ||
130 | int testdram (void) | |
131 | { | |
132 | /* TODO: XXX XXX XXX */ | |
133 | printf ("test: 64 MB - ok\n"); | |
134 | ||
135 | return (0); | |
136 | } | |
137 | ||
138 | /* ------------------------------------------------------------------------- */ | |
139 | ||
140 | #if defined(CFG_EEPROM_WREN) | |
141 | /* Input: <dev_addr> I2C address of EEPROM device to enable. | |
142 | * <state> -1: deliver current state | |
143 | * 0: disable write | |
144 | * 1: enable write | |
145 | * Returns: -1: wrong device address | |
146 | * 0: dis-/en- able done | |
147 | * 0/1: current state if <state> was -1. | |
148 | */ | |
149 | int eeprom_write_enable (unsigned dev_addr, int state) { | |
150 | if (CFG_I2C_EEPROM_ADDR != dev_addr) { | |
151 | return -1; | |
152 | } | |
153 | else { | |
154 | switch (state) { | |
155 | case 1: | |
156 | /* Enable write access, clear bit GPIO_SINT2. */ | |
157 | out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_EEPROM_WP); | |
158 | state = 0; | |
159 | break; | |
160 | case 0: | |
161 | /* Disable write access, set bit GPIO_SINT2. */ | |
162 | out32(GPIO0_OR, in32(GPIO0_OR) | CFG_EEPROM_WP); | |
163 | state = 0; | |
164 | break; | |
165 | default: | |
166 | /* Read current status back. */ | |
167 | state = (0 == (in32(GPIO0_OR) & CFG_EEPROM_WP)); | |
168 | break; | |
169 | } | |
170 | } | |
171 | return state; | |
172 | } | |
173 | #endif | |
174 | ||
175 | #if defined(CFG_EEPROM_WREN) | |
176 | int do_eep_wren (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
177 | { | |
178 | int query = argc == 1; | |
179 | int state = 0; | |
180 | ||
181 | if (query) { | |
182 | /* Query write access state. */ | |
183 | state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, -1); | |
184 | if (state < 0) { | |
185 | puts ("Query of write access state failed.\n"); | |
186 | } | |
187 | else { | |
188 | printf ("Write access for device 0x%0x is %sabled.\n", | |
189 | CFG_I2C_EEPROM_ADDR, state ? "en" : "dis"); | |
190 | state = 0; | |
191 | } | |
192 | } | |
193 | else { | |
194 | if ('0' == argv[1][0]) { | |
195 | /* Disable write access. */ | |
196 | state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, 0); | |
197 | } | |
198 | else { | |
199 | /* Enable write access. */ | |
200 | state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, 1); | |
201 | } | |
202 | if (state < 0) { | |
203 | puts ("Setup of write access state failed.\n"); | |
204 | } | |
205 | } | |
206 | ||
207 | return state; | |
208 | } | |
209 | ||
210 | U_BOOT_CMD( | |
211 | eepwren, 2, 0, do_eep_wren, | |
212 | "eepwren - Enable / disable / query EEPROM write access\n", | |
213 | NULL | |
214 | ); | |
215 | #endif /* #if defined(CFG_EEPROM_WREN) */ |