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affae2bf WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Stefan Roese, esd gmbh germany, stefan.roese@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 <ppc4xx.h> | |
26 | #include <asm/processor.h> | |
27 | ||
28 | /* | |
29 | * include common flash code (for esd boards) | |
30 | */ | |
31 | #include "../common/flash.c" | |
32 | ||
33 | /*----------------------------------------------------------------------- | |
34 | * Functions | |
35 | */ | |
36 | static ulong flash_get_size (vu_long * addr, flash_info_t * info); | |
37 | static void flash_get_offsets (ulong base, flash_info_t * info); | |
38 | ||
39 | /*----------------------------------------------------------------------- | |
40 | */ | |
41 | ||
42 | unsigned long flash_init (void) | |
43 | { | |
44 | unsigned long size_b0, size_b1; | |
45 | int i; | |
46 | uint pbcr; | |
47 | unsigned long base_b0, base_b1; | |
48 | int size_val = 0; | |
49 | ||
50 | /* Init: no FLASHes known */ | |
6d0f6bcf | 51 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
affae2bf WD |
52 | flash_info[i].flash_id = FLASH_UNKNOWN; |
53 | } | |
54 | ||
55 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
56 | ||
57 | base_b0 = FLASH_BASE0_PRELIM; | |
58 | size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]); | |
59 | ||
60 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
61 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
62 | size_b0, size_b0 << 20); | |
63 | } | |
64 | ||
65 | base_b1 = FLASH_BASE1_PRELIM; | |
66 | size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]); | |
67 | ||
68 | /* Re-do sizing to get full correct info */ | |
69 | ||
70 | if (size_b1) { | |
71 | mtdcr (ebccfga, pb0cr); | |
72 | pbcr = mfdcr (ebccfgd); | |
73 | mtdcr (ebccfga, pb0cr); | |
74 | base_b1 = -size_b1; | |
75 | switch (size_b1) { | |
76 | case 1 << 20: | |
77 | size_val = 0; | |
78 | break; | |
79 | case 2 << 20: | |
80 | size_val = 1; | |
81 | break; | |
82 | case 4 << 20: | |
83 | size_val = 2; | |
84 | break; | |
85 | case 8 << 20: | |
86 | size_val = 3; | |
87 | break; | |
88 | case 16 << 20: | |
89 | size_val = 4; | |
90 | break; | |
91 | } | |
92 | pbcr = (pbcr & 0x0001ffff) | base_b1 | (size_val << 17); | |
93 | mtdcr (ebccfgd, pbcr); | |
94 | /* printf("pb1cr = %x\n", pbcr); */ | |
95 | } | |
96 | ||
97 | if (size_b0) { | |
98 | mtdcr (ebccfga, pb1cr); | |
99 | pbcr = mfdcr (ebccfgd); | |
100 | mtdcr (ebccfga, pb1cr); | |
101 | base_b0 = base_b1 - size_b0; | |
102 | switch (size_b1) { | |
103 | case 1 << 20: | |
104 | size_val = 0; | |
105 | break; | |
106 | case 2 << 20: | |
107 | size_val = 1; | |
108 | break; | |
109 | case 4 << 20: | |
110 | size_val = 2; | |
111 | break; | |
112 | case 8 << 20: | |
113 | size_val = 3; | |
114 | break; | |
115 | case 16 << 20: | |
116 | size_val = 4; | |
117 | break; | |
118 | } | |
119 | pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17); | |
120 | mtdcr (ebccfgd, pbcr); | |
121 | /* printf("pb0cr = %x\n", pbcr); */ | |
122 | } | |
123 | ||
124 | size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]); | |
125 | ||
126 | flash_get_offsets (base_b0, &flash_info[0]); | |
127 | ||
128 | /* monitor protection ON by default */ | |
129 | flash_protect (FLAG_PROTECT_SET, | |
3b57fe0a | 130 | base_b0 + size_b0 - monitor_flash_len, |
affae2bf WD |
131 | base_b0 + size_b0 - 1, &flash_info[0]); |
132 | ||
133 | if (size_b1) { | |
134 | /* Re-do sizing to get full correct info */ | |
135 | size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]); | |
136 | ||
137 | flash_get_offsets (base_b1, &flash_info[1]); | |
138 | ||
139 | /* monitor protection ON by default */ | |
140 | flash_protect (FLAG_PROTECT_SET, | |
3b57fe0a | 141 | base_b1 + size_b1 - monitor_flash_len, |
affae2bf WD |
142 | base_b1 + size_b1 - 1, &flash_info[1]); |
143 | /* monitor protection OFF by default (one is enough) */ | |
144 | flash_protect (FLAG_PROTECT_CLEAR, | |
3b57fe0a | 145 | base_b0 + size_b0 - monitor_flash_len, |
affae2bf WD |
146 | base_b0 + size_b0 - 1, &flash_info[0]); |
147 | } else { | |
148 | flash_info[1].flash_id = FLASH_UNKNOWN; | |
149 | flash_info[1].sector_count = -1; | |
150 | } | |
151 | ||
152 | flash_info[0].size = size_b0; | |
153 | flash_info[1].size = size_b1; | |
154 | ||
155 | return (size_b0 + size_b1); | |
156 | } |