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809ac5e7 SR |
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; | |
45 | int i; | |
46 | uint pbcr; | |
47 | unsigned long base_b0; | |
48 | int size_val = 0; | |
49 | ||
50 | /* Init: no FLASHes known */ | |
6d0f6bcf | 51 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
809ac5e7 SR |
52 | flash_info[i].flash_id = FLASH_UNKNOWN; |
53 | } | |
54 | ||
55 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
56 | ||
57 | size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); | |
58 | ||
59 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
60 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
61 | size_b0, size_b0<<20); | |
62 | } | |
63 | ||
64 | /* Setup offsets */ | |
65 | flash_get_offsets (-size_b0, &flash_info[0]); | |
66 | ||
67 | /* Re-do sizing to get full correct info */ | |
68 | mtdcr(ebccfga, pb0cr); | |
69 | pbcr = mfdcr(ebccfgd); | |
70 | mtdcr(ebccfga, pb0cr); | |
71 | base_b0 = -size_b0; | |
72 | switch (size_b0) { | |
73 | case 1 << 20: | |
74 | size_val = 0; | |
75 | break; | |
76 | case 2 << 20: | |
77 | size_val = 1; | |
78 | break; | |
79 | case 4 << 20: | |
80 | size_val = 2; | |
81 | break; | |
82 | case 8 << 20: | |
83 | size_val = 3; | |
84 | break; | |
85 | case 16 << 20: | |
86 | size_val = 4; | |
87 | break; | |
88 | } | |
89 | pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17); | |
90 | mtdcr(ebccfgd, pbcr); | |
91 | ||
92 | /* Monitor protection ON by default */ | |
93 | (void)flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf | 94 | -CONFIG_SYS_MONITOR_LEN, |
809ac5e7 SR |
95 | 0xffffffff, |
96 | &flash_info[0]); | |
97 | ||
98 | flash_info[0].size = size_b0; | |
99 | ||
100 | return (size_b0); | |
101 | } |