f9681f116c
On SparcStations, the HostID field in the NVRAM is equal to the last three bytes of the MAC address (which is also stored in the NVRAM). This constant is used as an identification/serial number on Solaris. Signed-off-by: Olivier Danet <odanet@caramail.com> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
#ifndef FIRMWARE_ABI_H
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#define FIRMWARE_ABI_H
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/* OpenBIOS NVRAM partition */
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struct OpenBIOS_nvpart_v1 {
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uint8_t signature;
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uint8_t checksum;
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uint16_t len; // BE, length divided by 16
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char name[12];
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};
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#define OPENBIOS_PART_SYSTEM 0x70
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#define OPENBIOS_PART_FREE 0x7f
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static inline void
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OpenBIOS_finish_partition(struct OpenBIOS_nvpart_v1 *header, uint32_t size)
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{
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unsigned int i, sum;
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uint8_t *tmpptr;
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// Length divided by 16
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header->len = cpu_to_be16(size >> 4);
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// Checksum
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tmpptr = (uint8_t *)header;
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sum = *tmpptr;
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for (i = 0; i < 14; i++) {
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sum += tmpptr[2 + i];
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sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
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}
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header->checksum = sum & 0xff;
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}
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static inline uint32_t
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OpenBIOS_set_var(uint8_t *nvram, uint32_t addr, const char *str)
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{
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uint32_t len;
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len = strlen(str) + 1;
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memcpy(&nvram[addr], str, len);
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return addr + len;
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}
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/* Sun IDPROM structure at the end of NVRAM */
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/* from http://www.squirrel.com/squirrel/sun-nvram-hostid.faq.html */
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struct Sun_nvram {
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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) */
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uint8_t date[4]; /* date of manufacture */
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uint8_t hostid[3]; /* remaining 3 bytes of host id (serial number) */
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uint8_t checksum; /* bitwise xor of previous bytes */
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};
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static inline void
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Sun_init_header(struct Sun_nvram *header, const uint8_t *macaddr, int machine_id)
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{
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uint8_t tmp, *tmpptr;
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unsigned int i;
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header->type = 1;
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header->machine_id = machine_id & 0xff;
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memcpy(&header->macaddr, macaddr, 6);
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memcpy(&header->hostid , &macaddr[3], 3);
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/* Calculate checksum */
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tmp = 0;
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tmpptr = (uint8_t *)header;
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for (i = 0; i < 15; i++)
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tmp ^= tmpptr[i];
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header->checksum = tmp;
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}
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#endif /* FIRMWARE_ABI_H */
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