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Commit | Line | Data |
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a65cb682 SR |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
a65cb682 SR |
6 | */ |
7 | ||
8 | #include <common.h> | |
b36df561 | 9 | #include <asm/ppc4xx.h> |
a65cb682 SR |
10 | #include <asm/processor.h> |
11 | ||
12 | /* | |
13 | * include common flash code (for esd boards) | |
14 | */ | |
15 | #include "../common/flash.c" | |
16 | ||
17 | /*----------------------------------------------------------------------- | |
18 | * Functions | |
19 | */ | |
20 | static ulong flash_get_size (vu_long * addr, flash_info_t * info); | |
21 | static void flash_get_offsets (ulong base, flash_info_t * info); | |
22 | ||
23 | /*----------------------------------------------------------------------- | |
24 | */ | |
25 | ||
26 | unsigned long flash_init (void) | |
27 | { | |
28 | unsigned long size_b0; | |
29 | int i; | |
30 | uint pbcr; | |
31 | unsigned long base_b0; | |
32 | int size_val = 0; | |
33 | ||
34 | /* Init: no FLASHes known */ | |
6d0f6bcf | 35 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
a65cb682 SR |
36 | flash_info[i].flash_id = FLASH_UNKNOWN; |
37 | } | |
38 | ||
39 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
40 | ||
41 | size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); | |
42 | ||
43 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
44 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
45 | size_b0, size_b0<<20); | |
46 | } | |
47 | ||
48 | /* Setup offsets */ | |
49 | flash_get_offsets (-size_b0, &flash_info[0]); | |
50 | ||
51 | /* Re-do sizing to get full correct info */ | |
d1c3b275 SR |
52 | mtdcr(EBC0_CFGADDR, PB0CR); |
53 | pbcr = mfdcr(EBC0_CFGDATA); | |
54 | mtdcr(EBC0_CFGADDR, PB0CR); | |
a65cb682 SR |
55 | base_b0 = -size_b0; |
56 | switch (size_b0) { | |
57 | case 1 << 20: | |
58 | size_val = 0; | |
59 | break; | |
60 | case 2 << 20: | |
61 | size_val = 1; | |
62 | break; | |
63 | case 4 << 20: | |
64 | size_val = 2; | |
65 | break; | |
66 | case 8 << 20: | |
67 | size_val = 3; | |
68 | break; | |
69 | case 16 << 20: | |
70 | size_val = 4; | |
71 | break; | |
72 | } | |
73 | pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17); | |
d1c3b275 | 74 | mtdcr(EBC0_CFGDATA, pbcr); |
a65cb682 SR |
75 | |
76 | /* Monitor protection ON by default */ | |
77 | (void)flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf | 78 | -CONFIG_SYS_MONITOR_LEN, |
a65cb682 SR |
79 | 0xffffffff, |
80 | &flash_info[0]); | |
81 | ||
82 | flash_info[0].size = size_b0; | |
83 | ||
84 | return (size_b0); | |
85 | } |