1 files changed, 75 insertions, 0 deletions
diff --git a/src/include/hw/nvram/openbios_firmware_abi.h b/src/include/hw/nvram/openbios_firmware_abi.h
new file mode 100644
index 0000000..c66ee22
--- /dev/null
+++ b/src/include/hw/nvram/openbios_firmware_abi.h
@@ -0,0 +1,75 @@
+#ifndef FIRMWARE_ABI_H
+#define FIRMWARE_ABI_H
+
+/* OpenBIOS NVRAM partition */
+struct OpenBIOS_nvpart_v1 {
+    uint8_t signature;
+    uint8_t checksum;
+    uint16_t len; // BE, length divided by 16
+    char name[12];
+};
+
+#define OPENBIOS_PART_SYSTEM 0x70
+#define OPENBIOS_PART_FREE 0x7f
+
+static inline void
+OpenBIOS_finish_partition(struct OpenBIOS_nvpart_v1 *header, uint32_t size)
+{
+    unsigned int i, sum;
+    uint8_t *tmpptr;
+
+    // Length divided by 16
+    header->len = cpu_to_be16(size >> 4);
+
+    // Checksum
+    tmpptr = (uint8_t *)header;
+    sum = *tmpptr;
+    for (i = 0; i < 14; i++) {
+        sum += tmpptr[2 + i];
+        sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
+    }
+    header->checksum = sum & 0xff;
+}
+
+static inline uint32_t
+OpenBIOS_set_var(uint8_t *nvram, uint32_t addr, const char *str)
+{
+    uint32_t len;
+
+    len = strlen(str) + 1;
+    memcpy(&nvram[addr], str, len);
+
+    return addr + len;
+}
+
+/* Sun IDPROM structure at the end of NVRAM */
+/* from http://www.squirrel.com/squirrel/sun-nvram-hostid.faq.html */
+struct Sun_nvram {
+    uint8_t type;       /* always 01 */
+    uint8_t machine_id; /* first byte of host id (machine type) */
+    uint8_t macaddr[6]; /* 6 byte ethernet address (first 3 bytes 08, 00, 20) */
+    uint8_t date[4];    /* date of manufacture */
+    uint8_t hostid[3];  /* remaining 3 bytes of host id (serial number) */
+    uint8_t checksum;   /* bitwise xor of previous bytes */
+};
+
+static inline void
+Sun_init_header(struct Sun_nvram *header, const uint8_t *macaddr, int machine_id)
+{
+    uint8_t tmp, *tmpptr;
+    unsigned int i;
+
+    header->type = 1;
+    header->machine_id = machine_id & 0xff;
+    memcpy(&header->macaddr, macaddr, 6);
+    memcpy(&header->hostid , &macaddr[3], 3);
+
+    /* Calculate checksum */
+    tmp = 0;
+    tmpptr = (uint8_t *)header;
+    for (i = 0; i < 15; i++)
+        tmp ^= tmpptr[i];
+
+    header->checksum = tmp;
+}
+#endif /* FIRMWARE_ABI_H */