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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
#include <config.h>
#include <asm/arch/imx-regs.h>
#define writel(val, reg) \
ldr r0, =reg; \
ldr r1, =val; \
str r1, [r0];
#define CRM_PLL_PCTL_PARAM(pd, fd, fi, fn) (((pd-1)<<26) + ((fd-1)<<16) + (fi<<10) + (fn<<0))
.globl board_init_lowlevel
board_init_lowlevel:
mov r10, lr
/*
* AHB-Lite IP Interface
*/
writel(0x20040304, AIPI1_PSR0)
writel(0xDFFBFCFB, AIPI1_PSR1)
writel(0x00000000, AIPI2_PSR0)
writel(0xFFFFFFFF, AIPI2_PSR1)
ldr r0, =CSCR
ldr r1, [r0]
bic r1, r1, #0x3
str r1, [r0]
writel(0x00041c02, MPCTL0)
writel(0x04082008, SPCTL0)
writel(0x33f00304, CSCR)
writel(0x33f00300 | CSCR_FPM_EN | CSCR_MPEN | CSCR_SPEN | CSCR_MCU_SEL |
CSCR_SP_SEL | CSCR_MPLL_RESTART | CSCR_SPLL_RESTART |
0 ,
CSCR)
/* add some delay here */
mov r1, #0x1000
1: subs r1, r1, #0x1
bne 1b
writel(0x33f00300 | CSCR_FPM_EN | CSCR_MPEN | CSCR_SPEN | CSCR_MCU_SEL |
CSCR_SP_SEL | CSCR_MPLL_RESTART | CSCR_SPLL_RESTART |
CSCR_ARM_SRC_MPLL,
CSCR)
writel(0x00070f08, GPCR)
writel(0x130410c3, PCDR0)
writel(0x09030913, PCDR1)
/* Skip SDRAM initialization if we run from RAM */
cmp pc, #0xa0000000
bls 1f
cmp pc, #0xc0000000
bhi 1f
mov pc,r10
1:
/*
* DDR on CSD0
*/
writel(0x00000008, 0xD8001010)
writel(0x55555555, 0x10027828)
writel(0x55555555, 0x10027830)
writel(0x55555555, 0x10027834)
writel(0x00005005, 0x10027838)
writel(0x15555555, 0x1002783C)
writel(0x00000004, 0xD8001010)
writel(0x006ac73a, 0xD8001004)
writel(0x92100000, 0xD8001000)
writel(0x00000000, 0xA0000F00)
writel(0xA2100000, 0xD8001000)
writel(0x00000000, 0xA0000F00)
writel(0x00000000, 0xA0000F00)
writel(0x00000000, 0xA0000F00)
writel(0x00000000, 0xA0000F00)
writel(0xA2200000, 0xD8001000)
writel(0x00000000, 0xA0000F00)
writel(0x00000000, 0xA0000F00)
writel(0x00000000, 0xA0000F00)
writel(0x00000000, 0xA0000F00)
writel(0xb2100000, 0xD8001000)
ldr r0, =0xA0000033
mov r1, #0xda
strb r1, [r0]
ldr r0, =0xA1000000
mov r1, #0xff
strb r1, [r0]
writel(0x82226080, 0xD8001000)
mov pc,r10
|
