linux-user: stack_base is now mandatory on all targets
[qemu.git] / hw / firmware_abi.h
1 #ifndef FIRMWARE_ABI_H
2 #define FIRMWARE_ABI_H
3
4 /* OpenBIOS NVRAM partition */
5 struct OpenBIOS_nvpart_v1 {
6 uint8_t signature;
7 uint8_t checksum;
8 uint16_t len; // BE, length divided by 16
9 char name[12];
10 };
11
12 #define OPENBIOS_PART_SYSTEM 0x70
13 #define OPENBIOS_PART_FREE 0x7f
14
15 static inline void
16 OpenBIOS_finish_partition(struct OpenBIOS_nvpart_v1 *header, uint32_t size)
17 {
18 unsigned int i, sum;
19 uint8_t *tmpptr;
20
21 // Length divided by 16
22 header->len = cpu_to_be16(size >> 4);
23
24 // Checksum
25 tmpptr = (uint8_t *)header;
26 sum = *tmpptr;
27 for (i = 0; i < 14; i++) {
28 sum += tmpptr[2 + i];
29 sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
30 }
31 header->checksum = sum & 0xff;
32 }
33
34 static inline uint32_t
35 OpenBIOS_set_var(uint8_t *nvram, uint32_t addr, const char *str)
36 {
37 uint32_t len;
38
39 len = strlen(str) + 1;
40 memcpy(&nvram[addr], str, len);
41
42 return addr + len;
43 }
44
45 /* Sun IDPROM structure at the end of NVRAM */
46 /* from http://www.squirrel.com/squirrel/sun-nvram-hostid.faq.html */
47 struct Sun_nvram {
48 uint8_t type; /* always 01 */
49 uint8_t machine_id; /* first byte of host id (machine type) */
50 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 */
54 };
55
56 static inline void
57 Sun_init_header(struct Sun_nvram *header, const uint8_t *macaddr, int machine_id)
58 {
59 uint8_t tmp, *tmpptr;
60 unsigned int i;
61
62 header->type = 1;
63 header->machine_id = machine_id & 0xff;
64 memcpy(&header->macaddr, macaddr, 6);
65 /* Calculate checksum */
66 tmp = 0;
67 tmpptr = (uint8_t *)header;
68 for (i = 0; i < 15; i++)
69 tmp ^= tmpptr[i];
70
71 header->checksum = tmp;
72 }
73 #endif /* FIRMWARE_ABI_H */