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-rw-r--r--arch/mips/cavium-octeon/executive/octeon-model.c436
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diff --git a/arch/mips/cavium-octeon/executive/octeon-model.c b/arch/mips/cavium-octeon/executive/octeon-model.c
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+++ b/arch/mips/cavium-octeon/executive/octeon-model.c
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+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2010 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**************************************/
+
+#include <asm/octeon/octeon.h>
+
+enum octeon_feature_bits __octeon_feature_bits __read_mostly;
+EXPORT_SYMBOL_GPL(__octeon_feature_bits);
+
+/**
+ * Read a byte of fuse data
+ * @byte_addr: address to read
+ *
+ * Returns fuse value: 0 or 1
+ */
+static uint8_t __init cvmx_fuse_read_byte(int byte_addr)
+{
+ union cvmx_mio_fus_rcmd read_cmd;
+
+ read_cmd.u64 = 0;
+ read_cmd.s.addr = byte_addr;
+ read_cmd.s.pend = 1;
+ cvmx_write_csr(CVMX_MIO_FUS_RCMD, read_cmd.u64);
+ while ((read_cmd.u64 = cvmx_read_csr(CVMX_MIO_FUS_RCMD))
+ && read_cmd.s.pend)
+ ;
+ return read_cmd.s.dat;
+}
+
+/*
+ * 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.
+ */
+static const char *__init 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 = 0;
+ if (!OCTEON_IS_MODEL(OCTEON_CN6XXX))
+ 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_pop(cvmx_read_csr(CVMX_CIU_FUSE));
+
+ /* Make sure the non existent 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";
+
+ if (!fus_dat2.s.nocrypto)
+ __octeon_feature_bits |= OCTEON_HAS_CRYPTO;
+
+ /*
+ * Assume pass number is encoded using <5:3><2:0>. Exceptions
+ * will be fixed later.
+ */
+ sprintf(pass, "%d.%d", (int)((chip_id >> 3) & 7) + 1, (int)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 32:
+ core_model = "80";
+ break;
+ case 24:
+ core_model = "70";
+ break;
+ 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, half cache (CP with half cache) */
+ if ((num_cores == 4) && fus3.cn58xx.crip_1024k && !strncmp(suffix, "CP", 2))
+ 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 (fus_dat3.s.bar2_en)
+ suffix = "NSPB2";
+ }
+ 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;
+ case 0x93: /* CN61XX */
+ family = "61";
+ if (fus_dat2.cn61xx.nocrypto && fus_dat2.cn61xx.dorm_crypto)
+ suffix = "AP";
+ if (fus_dat2.cn61xx.nocrypto)
+ suffix = "CP";
+ else if (fus_dat2.cn61xx.dorm_crypto)
+ suffix = "DAP";
+ else if (fus_dat3.cn61xx.nozip)
+ suffix = "SCP";
+ break;
+ case 0x90: /* CN63XX */
+ family = "63";
+ if (fus_dat3.s.l2c_crip == 2)
+ family = "62";
+ if (num_cores == 6) /* Other core counts match generic */
+ core_model = "35";
+ if (fus_dat2.cn63xx.nocrypto)
+ suffix = "CP";
+ else if (fus_dat2.cn63xx.dorm_crypto)
+ suffix = "DAP";
+ else if (fus_dat3.cn63xx.nozip)
+ suffix = "SCP";
+ else
+ suffix = "AAP";
+ break;
+ case 0x92: /* CN66XX */
+ family = "66";
+ if (num_cores == 6) /* Other core counts match generic */
+ core_model = "35";
+ if (fus_dat2.cn66xx.nocrypto && fus_dat2.cn66xx.dorm_crypto)
+ suffix = "AP";
+ if (fus_dat2.cn66xx.nocrypto)
+ suffix = "CP";
+ else if (fus_dat2.cn66xx.dorm_crypto)
+ suffix = "DAP";
+ else if (fus_dat3.cn66xx.nozip)
+ suffix = "SCP";
+ else
+ suffix = "AAP";
+ break;
+ case 0x91: /* CN68XX */
+ family = "68";
+ if (fus_dat2.cn68xx.nocrypto && fus_dat3.cn68xx.nozip)
+ suffix = "CP";
+ else if (fus_dat2.cn68xx.dorm_crypto)
+ suffix = "DAP";
+ else if (fus_dat3.cn68xx.nozip)
+ suffix = "SCP";
+ else if (fus_dat2.cn68xx.nocrypto)
+ suffix = "SP";
+ else
+ suffix = "AAP";
+ 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') {
+ int fuse_base = 384 / 8;
+ if (family[0] == '6')
+ fuse_base = 832 / 8;
+
+ /* Check for model in fuses, overrides normal decode */
+ /* This is _not_ valid for Octeon CN3XXX models */
+ fuse_data |= cvmx_fuse_read_byte(fuse_base + 3);
+ fuse_data = fuse_data << 8;
+ fuse_data |= cvmx_fuse_read_byte(fuse_base + 2);
+ fuse_data = fuse_data << 8;
+ fuse_data |= cvmx_fuse_read_byte(fuse_base + 1);
+ fuse_data = fuse_data << 8;
+ fuse_data |= cvmx_fuse_read_byte(fuse_base);
+ 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;
+}
+
+/**
+ * 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 *__init octeon_model_get_string(uint32_t chip_id)
+{
+ static char buffer[32];
+ return octeon_model_get_string_buffer(chip_id, buffer);
+}
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