diff options
Diffstat (limited to 'arch/mips/cavium-octeon/executive/octeon-model.c')
| -rw-r--r-- | arch/mips/cavium-octeon/executive/octeon-model.c | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/arch/mips/cavium-octeon/executive/octeon-model.c b/arch/mips/cavium-octeon/executive/octeon-model.c new file mode 100644 index 000000000000..9afc3794ed1b --- /dev/null +++ b/arch/mips/cavium-octeon/executive/octeon-model.c @@ -0,0 +1,358 @@ +/***********************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; +} |
