/***********************license start***************
* Author: Cavium Networks
*
* Contact: support@caviumnetworks.com
* This file is part of the OCTEON SDK
*
* Copyright (c) 2003-2008 Cavium Networks
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, Version 2, as
* published by the Free Software Foundation.
*
* This file is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this file; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* or visit http://www.gnu.org/licenses/.
*
* This file may also be available under a different license from Cavium.
* Contact Cavium Networks for more information
***********************license end**************************************/
/*
* File defining functions for working with different Octeon
* models.
*/
#include <asm/octeon/octeon.h>
/**
* Given the chip processor ID from COP0, this function returns a
* string representing the chip model number. The string is of the
* form CNXXXXpX.X-FREQ-SUFFIX.
* - XXXX = The chip model number
* - X.X = Chip pass number
* - FREQ = Current frequency in Mhz
* - SUFFIX = NSP, EXP, SCP, SSP, or CP
*
* @chip_id: Chip ID
*
* Returns Model string
*/
const char *octeon_model_get_string(uint32_t chip_id)
{
static char buffer[32];
return octeon_model_get_string_buffer(chip_id, buffer);
}
/*
* Version of octeon_model_get_string() that takes buffer as argument,
* as running early in u-boot static/global variables don't work when
* running from flash.
*/
const char *octeon_model_get_string_buffer(uint32_t chip_id, char *buffer)
{
const char *family;
const char *core_model;
char pass[4];
int clock_mhz;
const char *suffix;
union cvmx_l2d_fus3 fus3;
int num_cores;
union cvmx_mio_fus_dat2 fus_dat2;
union cvmx_mio_fus_dat3 fus_dat3;
char fuse_model[10];
uint32_t fuse_data = 0;
fus3.u64 = cvmx_read_csr(CVMX_L2D_FUS3);
fus_dat2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
fus_dat3.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT3);
num_cores = cvmx_octeon_num_cores();
/* Make sure the non existant devices look disabled */
switch ((chip_id >> 8) & 0xff) {
case 6: /* CN50XX */
case 2: /* CN30XX */
fus_dat3.s.nodfa_dte = 1;
fus_dat3.s.nozip = 1;
break;
case 4: /* CN57XX or CN56XX */
fus_dat3.s.nodfa_dte = 1;
break;
default:
break;
}
/* Make a guess at the suffix */
/* NSP = everything */
/* EXP = No crypto */
/* SCP = No DFA, No zip */
/* CP = No DFA, No crypto, No zip */
if (fus_dat3.s.nodfa_dte) {
if (fus_dat2.s.nocrypto)
suffix = "CP";
else
suffix = "SCP";
} else if (fus_dat2.s.nocrypto)
suffix = "EXP";
else
suffix = "NSP";
/*
* Assume pass number is encoded using <5:3><2:0>. Exceptions
* will be fixed later.
*/
sprintf(pass, "%u.%u", ((chip_id >> 3) & 7) + 1, chip_id & 7);
/*
* Use the number of cores to determine the last 2 digits of
* the model number. There are some exceptions that are fixed
* later.
*/
switch (num_cores) {
case 16:
core_model = "60";
break;
case 15:
core_model = "58";
break;
case 14:
core_model = "55";
break;
case 13:
core_model = "52";
break;
case 12:
core_model = "50";
break;
case 11:
core_model = "48";
break;
case 10:
core_model = "45";
break;
case 9:
core_model = "42";
break;
case 8:
core_model = "40";
break;
case 7:
core_model = "38";
break;
case 6:
core_model = "34";
break;
case 5:
core_model = "32";
break;
case 4:
core_model = "30";
break;
case 3:
core_model = "25";
break;
case 2:
core_model = "20";
break;
case 1:
core_model = "10";
break;
default:
core_model = "XX";
break;
}
/* Now figure out the family, the first two digits */
switch ((chip_id >> 8) & 0xff) {
case 0: /* CN38XX, CN37XX or CN36XX */
if (fus3.cn38xx.crip_512k) {
/*
* For some unknown reason, the 16 core one is
* called 37 instead of 36.
*/
if (num_cores >= 16)
family = "37";
else
family = "36";
} else
family = "38";
/*
* This series of chips didn't follow the standard
* pass numbering.
*/
switch (chip_id & 0xf) {
case 0:
strcpy(pass, "1.X");
break;
case 1:
strcpy(pass, "2.X");
break;
case 3:
strcpy(pass, "3.X");
break;
default:
strcpy(pass, "X.X");
break;
}
break;
case 1: /* CN31XX or CN3020 */
if ((chip_id & 0x10) || fus3.cn31xx.crip_128k)
family = "30";
else
family = "31";
/*
* This series of chips didn't follow the standard
* pass numbering.
*/
switch (chip_id & 0xf) {
case 0:
strcpy(pass, "1.0");
break;
case 2:
strcpy(pass, "1.1");
break;
default:
strcpy(pass, "X.X");
break;
}
break;
case 2: /* CN3010 or CN3005 */
family = "30";
/* A chip with half cache is an 05 */
if (fus3.cn30xx.crip_64k)
core_model = "05";
/*
* This series of chips didn't follow the standard
* pass numbering.
*/
switch (chip_id & 0xf) {
case 0:
strcpy(pass, "1.0");
break;
case 2:
strcpy(pass, "1.1");
break;
default:
strcpy(pass, "X.X");
break;
}
break;
case 3: /* CN58XX */
family = "58";
/* Special case. 4 core, no crypto */
if ((num_cores == 4) && fus_dat2.cn38xx.nocrypto)
core_model = "29";
/* Pass 1 uses different encodings for pass numbers */
if ((chip_id & 0xFF) < 0x8) {
switch (chip_id & 0x3) {
case 0:
strcpy(pass, "1.0");
break;
case 1:
strcpy(pass, "1.1");
break;
case 3:
strcpy(pass, "1.2");
break;
default:
strcpy(pass, "1.X");
break;
}
}
break;
case 4: /* CN57XX, CN56XX, CN55XX, CN54XX */
if (fus_dat2.cn56xx.raid_en) {
if (fus3.cn56xx.crip_1024k)
family = "55";
else
family = "57";
if (fus_dat2.cn56xx.nocrypto)
suffix = "SP";
else
suffix = "SSP";
} else {
if (fus_dat2.cn56xx.nocrypto)
suffix = "CP";
else {
suffix = "NSP";
if (fus_dat3.s.nozip)
suffix = "SCP";
}
if (fus3.cn56xx.crip_1024k)
family = "54";
else
family = "56";
}
break;
case 6: /* CN50XX */
family = "50";
break;
case 7: /* CN52XX */
if (fus3.cn52xx.crip_256k)
family = "51";
else
family = "52";
break;
default:
family = "XX";
core_model = "XX";
strcpy(pass, "X.X");
suffix = "XXX";
break;
}
clock_mhz = octeon_get_clock_rate() / 1000000;
if (family[0] != '3') {
/* Check for model in fuses, overrides normal decode */
/* This is _not_ valid for Octeon CN3XXX models */
fuse_data |= cvmx_fuse_read_byte(51);
fuse_data = fuse_data << 8;
fuse_data |= cvmx_fuse_read_byte(50);
fuse_data = fuse_data << 8;
fuse_data |= cvmx_fuse_read_byte(49);
fuse_data = fuse_data << 8;
fuse_data |= cvmx_fuse_read_byte(48);
if (fuse_data & 0x7ffff) {
int model = fuse_data & 0x3fff;
int suffix = (fuse_data >> 14) & 0x1f;
if (suffix && model) {
/*
* Have both number and suffix in
* fuses, so both
*/
sprintf(fuse_model, "%d%c",
model, 'A' + suffix - 1);
core_model = "";
family = fuse_model;
} else if (suffix && !model) {
/*
* Only have suffix, so add suffix to
* 'normal' model number.
*/
sprintf(fuse_model, "%s%c", core_model,
'A' + suffix - 1);
core_model = fuse_model;
} else {
/*
* Don't have suffix, so just use
* model from fuses.
*/
sprintf(fuse_model, "%d", model);
core_model = "";
family = fuse_model;
}
}
}
sprintf(buffer, "CN%s%sp%s-%d-%s",
family, core_model, pass, clock_mhz, suffix);
return buffer;
}
