blob: 29aa5a0fda6d9386071ba03f6966f0ac698a2e45 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
# SDRAM initialization script for the AT91SAM9260
#------------------------------------------------
# Configure master clock
echo Configuring the master clock...\n
# Enable main oscillator
set *0xFFFFFC20 = 0x00004001
while ((*0xFFFFFC68 & 0x1) == 0)
end
# Set PLLA to 200MHz
set *0xFFFFFC28 = 0x2060BF09
while ((*0xFFFFFC68 & 0x2) == 0)
end
# Set PLLB for USB usage
set *0xFFFFFC2C = 0x207C3F0C
while ((*0xFFFFFC68 & 0x4) == 0)
end
# Select prescaler
set *0xFFFFFC30 = 0x00000100
while ((*0xFFFFFC68 & 0x8) == 0)
end
# Select master clock
set *0xFFFFFC30 = 0x00000102
while ((*0xFFFFFC68 & 0x8) == 0)
end
echo Master clock ok.\n
echo Configuring the SDRAM controller...\n
# Enable EBI chip select for the SDRAM
set *0xFFFFEF1C = 0x2
# SDRAM configuration
set *0xFFFFEA08 = 0x85227259
set *0xFFFFEA00 = 0x1
set *0x20000000 = 0
set *0xFFFFEA00 = 0x2
set *0x20000000 = 0
set *0xFFFFEA00 = 0x4
set *0x20000000 = 0
set *0xFFFFEA00 = 0x4
set *0x20000000 = 0
set *0xFFFFEA00 = 0x4
set *0x20000000 = 0
set *0xFFFFEA00 = 0x4
set *0x20000000 = 0
set *0xFFFFEA00 = 0x4
set *0x20000000 = 0
set *0xFFFFEA00 = 0x4
set *0x20000000 = 0
set *0xFFFFEA00 = 0x4
set *0x20000000 = 0
set *0xFFFFEA00 = 0x4
set *0x20000000 = 0
set *0xFFFFEA00 = 0x3
set *0x20000000 = 0
set *0xFFFFEA00 = 0x0
set *0x20000000 = 0
set *0xFFFFEA04 = 0x2B7
echo SDRAM configuration ok.\n
|
