1 | #ifndef SUN_NVRAM_H |
---|---|
2 | #define SUN_NVRAM_H |
3 | |
4 | /* Sun IDPROM structure at the end of NVRAM */ |
5 | /* from http://www.squirrel.com/squirrel/sun-nvram-hostid.faq.html */ |
6 | struct Sun_nvram { |
7 | uint8_t type; /* always 01 */ |
8 | uint8_t machine_id; /* first byte of host id (machine type) */ |
9 | uint8_t macaddr[6]; /* 6 byte ethernet address (first 3 bytes 08, 00, 20) */ |
10 | uint8_t date[4]; /* date of manufacture */ |
11 | uint8_t hostid[3]; /* remaining 3 bytes of host id (serial number) */ |
12 | uint8_t checksum; /* bitwise xor of previous bytes */ |
13 | }; |
14 | |
15 | static inline void |
16 | Sun_init_header(struct Sun_nvram *header, const uint8_t *macaddr, int machine_id) |
17 | { |
18 | uint8_t tmp, *tmpptr; |
19 | unsigned int i; |
20 | |
21 | header->type = 1; |
22 | header->machine_id = machine_id & 0xff; |
23 | memcpy(&header->macaddr, macaddr, 6); |
24 | memcpy(&header->hostid , &macaddr[3], 3); |
25 | |
26 | /* Calculate checksum */ |
27 | tmp = 0; |
28 | tmpptr = (uint8_t *)header; |
29 | for (i = 0; i < 15; i++) |
30 | tmp ^= tmpptr[i]; |
31 | |
32 | header->checksum = tmp; |
33 | } |
34 | #endif /* SUN_NVRAM_H */ |
35 |