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6
7#include <common.h>
8#include <asm/arch/sys_proto.h>
9static void do_cancel_out(u32 *num, u32 *den, u32 factor)
10{
11 while (1) {
12 if (((*num)/factor*factor == (*num)) &&
13 ((*den)/factor*factor == (*den))) {
14 (*num) /= factor;
15 (*den) /= factor;
16 } else
17 break;
18 }
19}
20
21
22
23
24
25void cancel_out(u32 *num, u32 *den, u32 den_limit)
26{
27 do_cancel_out(num, den, 2);
28 do_cancel_out(num, den, 3);
29 do_cancel_out(num, den, 5);
30 do_cancel_out(num, den, 7);
31 do_cancel_out(num, den, 11);
32 do_cancel_out(num, den, 13);
33 do_cancel_out(num, den, 17);
34 while ((*den) > den_limit) {
35 *num /= 2;
36
37
38
39
40 *den = (*den + 1) / 2;
41 }
42}
43
44__weak void omap_die_id(unsigned int *die_id)
45{
46 die_id[0] = die_id[1] = die_id[2] = die_id[3] = 0;
47}
48
49void omap_die_id_serial(void)
50{
51 unsigned int die_id[4] = { 0 };
52 char serial_string[17] = { 0 };
53
54 omap_die_id((unsigned int *)&die_id);
55
56 if (!getenv("serial#")) {
57 snprintf(serial_string, sizeof(serial_string),
58 "%08x%08x", die_id[0], die_id[3]);
59
60 setenv("serial#", serial_string);
61 }
62}
63
64void omap_die_id_get_board_serial(struct tag_serialnr *serialnr)
65{
66 char *serial_string;
67 unsigned long long serial;
68
69 serial_string = getenv("serial#");
70
71 if (serial_string) {
72 serial = simple_strtoull(serial_string, NULL, 16);
73
74 serialnr->high = (unsigned int) (serial >> 32);
75 serialnr->low = (unsigned int) (serial & 0xffffffff);
76 } else {
77 serialnr->high = 0;
78 serialnr->low = 0;
79 }
80}
81
82void omap_die_id_usbethaddr(void)
83{
84 unsigned int die_id[4] = { 0 };
85 unsigned char mac[6] = { 0 };
86
87 omap_die_id((unsigned int *)&die_id);
88
89 if (!getenv("usbethaddr")) {
90
91
92
93
94 mac[0] = 0x02;
95 mac[1] = die_id[3] & 0xff;
96 mac[2] = die_id[2] & 0xff;
97 mac[3] = die_id[1] & 0xff;
98 mac[4] = die_id[0] & 0xff;
99 mac[5] = (die_id[0] >> 8) & 0xff;
100
101 eth_setenv_enetaddr("usbethaddr", mac);
102 }
103}
104
105void omap_die_id_display(void)
106{
107 unsigned int die_id[4] = { 0 };
108
109 omap_die_id(die_id);
110
111 printf("OMAP die ID: %08x%08x%08x%08x\n", die_id[3], die_id[2],
112 die_id[1], die_id[0]);
113}
114