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fe8c2806 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; | |
45 | int i; | |
8bde7f77 WD |
46 | uint pbcr; |
47 | unsigned long base_b0; | |
fe8c2806 WD |
48 | |
49 | /* Init: no FLASHes known */ | |
6d0f6bcf | 50 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
fe8c2806 WD |
51 | flash_info[i].flash_id = FLASH_UNKNOWN; |
52 | } | |
53 | ||
54 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
55 | ||
56 | size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); | |
57 | ||
58 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
59 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
60 | size_b0, size_b0<<20); | |
61 | } | |
62 | ||
8bde7f77 WD |
63 | /* Setup offsets */ |
64 | flash_get_offsets (-size_b0, &flash_info[0]); | |
fe8c2806 | 65 | |
8bde7f77 | 66 | /* Re-do sizing to get full correct info */ |
d1c3b275 SR |
67 | mtdcr(EBC0_CFGADDR, PB0CR); |
68 | pbcr = mfdcr(EBC0_CFGDATA); | |
69 | mtdcr(EBC0_CFGADDR, PB0CR); | |
8bde7f77 WD |
70 | base_b0 = -size_b0; |
71 | pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17); | |
d1c3b275 SR |
72 | mtdcr(EBC0_CFGDATA, pbcr); |
73 | /* printf("PB1CR = %x\n", pbcr); */ | |
fe8c2806 | 74 | |
8bde7f77 WD |
75 | /* Monitor protection ON by default */ |
76 | (void)flash_protect(FLAG_PROTECT_SET, | |
77 | -monitor_flash_len, | |
78 | 0xffffffff, | |
79 | &flash_info[0]); | |
fe8c2806 | 80 | |
8bde7f77 | 81 | flash_info[0].size = size_b0; |
fe8c2806 WD |
82 | |
83 | return (size_b0); | |
84 | } |