/* Implement CRC using Octeon's CRC hardware unit. This provides a significant
* speed up, especially when the code is executing from flash (and the data
* being CRC'ed is in flash, as is done during boot.)
*/
uint32_t ZEXPORT crc32_no_comp(uint32_t crc, const Bytef *buf, uInt len)
{
volatile uint64_t *ptr64;
volatile uint8_t *ptr = (void *)buf;
uint32_t poly = 0;
poly = 0x04c11db7; /* Bit reversed standard CRC32 polynomial - 0xedb88320 */
CVMX_MT_CRC_POLYNOMIAL(poly);
/* Do endian byte swap on CRC, then use reflect mode of
* MT IV to reverse the bits within the bytes. This results
* in a bit-reversed IV. */
CVMX_ES32(crc, crc);
CVMX_MT_CRC_IV_REFLECT(crc);
while ((((uint32_t)ptr) & 0x7) && len) {
CVMX_MT_CRC_BYTE_REFLECT(*ptr++);
len--;
}
ptr64 = (void *)ptr;
while (len > 8) {
CVMX_MT_CRC_DWORD_REFLECT(*ptr64++);
len -= 8;
}
ptr = (void *)ptr64;
while (len--)
CVMX_MT_CRC_BYTE_REFLECT(*ptr++);
CVMX_MF_CRC_IV_REFLECT(crc);
return crc;
}
void __octeon_board_create_random_mac_addr(void)
{
#ifndef CONFIG_OCTEON_SIM
uint8_t fuse_buf[128];
cvmx_mio_fus_rcmd_t fus_rcmd;
uint32_t poly = 0x04c11db7;
uint32_t crc = 0xffffffff;
uint64_t *ptr;
int ser_len = strlen((char *)gd->arch.board_desc.serial_str);
int i;
memset(fuse_buf, 0, sizeof(fuse_buf));
fuse_buf[0] = gd->arch.board_desc.board_type;
fuse_buf[1] = (gd->arch.board_desc.rev_major << 4)
| gd->arch.board_desc.rev_minor;
fuse_buf[2] = ser_len;
strncpy((char*)(fuse_buf+3), (char*)gd->arch.board_desc.serial_str,
sizeof(fuse_buf)-3);
/* For a random number we perform a CRC32 using the board type,
* revision, serial number length, serial number and for OCTEON 2 and 3
* the fuse settings.
*/
CVMX_MT_CRC_POLYNOMIAL(poly);
CVMX_ES32(crc, crc);
CVMX_MT_CRC_IV_REFLECT(crc);
ptr = (uint64_t *)fuse_buf;
for (i = 0; i < sizeof(fuse_buf); i += 8)
CVMX_MT_CRC_DWORD_REFLECT(*ptr++);
if (!OCTEON_IS_OCTEON1PLUS()) {
fus_rcmd.u64 = 0;
fus_rcmd.s.pend = 1;
for (i = 0; i < sizeof(fuse_buf); i++) {
do {
fus_rcmd.u64 = cvmx_read_csr(CVMX_MIO_FUS_RCMD);
} while (fus_rcmd.s.pend == 1);
fuse_buf[i] = fus_rcmd.s.dat;
}
for (i = 0; i < sizeof(fuse_buf); i += 8)
CVMX_MT_CRC_DWORD_REFLECT(*ptr++);
}
/* Get the final CRC32 */
CVMX_MF_CRC_IV_REFLECT(crc);
crc ^= 0xffffffff;
gd->arch.mac_desc.count = 255;
gd->arch.mac_desc.mac_addr_base[0] = 0x02; /* locally administered */
gd->arch.mac_desc.mac_addr_base[1] = crc & 0xff;
gd->arch.mac_desc.mac_addr_base[2] = (crc >> 8) & 0xff;
gd->arch.mac_desc.mac_addr_base[3] = (crc >> 16) & 0xff;
gd->arch.mac_desc.mac_addr_base[4] = (crc >> 24) & 0xff;
gd->arch.mac_desc.mac_addr_base[5] = 0;
debug("Created random MAC address %pM", gd->arch.mac_desc.mac_addr_base);
#else
gd->arch.mac_desc.mac_addr_base[0] = 2;
gd->arch.mac_desc.mac_addr_base[1] = 0x00;
gd->arch.mac_desc.mac_addr_base[2] = 0xDE;
gd->arch.mac_desc.mac_addr_base[3] = 0xAD;
gd->arch.mac_desc.mac_addr_base[4] = 0xBF;
gd->arch.mac_desc.mac_addr_base[5] = 0x00;
gd->arch.mac_desc.count = 255;
#endif
}
