4
/* OpenBIOS NVRAM partition */
5
struct OpenBIOS_nvpart_v1 {
8
uint16_t len; // BE, length divided by 16
12
#define OPENBIOS_PART_SYSTEM 0x70
13
#define OPENBIOS_PART_FREE 0x7f
16
OpenBIOS_finish_partition(struct OpenBIOS_nvpart_v1 *header, uint32_t size)
21
// Length divided by 16
22
header->len = cpu_to_be16(size >> 4);
25
tmpptr = (uint8_t *)header;
27
for (i = 0; i < 14; i++) {
29
sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
31
header->checksum = sum & 0xff;
34
static inline uint32_t
35
OpenBIOS_set_var(uint8_t *nvram, uint32_t addr, const char *str)
39
len = strlen(str) + 1;
40
memcpy(&nvram[addr], str, len);
45
/* Sun IDPROM structure at the end of NVRAM */
46
/* from http://www.squirrel.com/squirrel/sun-nvram-hostid.faq.html */
48
uint8_t type; /* always 01 */
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uint8_t machine_id; /* first byte of host id (machine type) */
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uint8_t macaddr[6]; /* 6 byte ethernet address (first 3 bytes 08, 00, 20) */
51
uint8_t date[4]; /* date of manufacture */
52
uint8_t hostid[3]; /* remaining 3 bytes of host id (serial number) */
53
uint8_t checksum; /* bitwise xor of previous bytes */
57
Sun_init_header(struct Sun_nvram *header, const uint8_t *macaddr, int machine_id)
63
header->machine_id = machine_id & 0xff;
64
memcpy(&header->macaddr, macaddr, 6);
65
/* Calculate checksum */
67
tmpptr = (uint8_t *)header;
68
for (i = 0; i < 15; i++)
71
header->checksum = tmp;
73
#endif /* FIRMWARE_ABI_H */