| // Copyright lowRISC contributors. | |
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. | |
| // SPDX-License-Identifier: Apache-2.0 | |
| // | |
| package sram_ctrl_pkg; | |
| //////////////// | |
| // Parameters // | |
| //////////////// | |
| // The width of this RAM is currently restricted to 39 (32bit data + 7bit integrity). | |
| parameter int DataWidth = 32 + tlul_pkg::DataIntgWidth; | |
| parameter int NonceWidth = 64; | |
| ///////////// | |
| // RndCnst // | |
| ///////////// | |
| parameter otp_ctrl_pkg::sram_key_t RndCnstSramKeyDefault = | |
| 128'hbecda03b34bc0418a30a33861a610f71; | |
| parameter otp_ctrl_pkg::sram_nonce_t RndCnstSramNonceDefault = | |
| 128'h22f296f8f95efb84a75cd435a5541e9f; | |
| // These LFSR parameters have been generated with | |
| // $ ./util/design/gen-lfsr-seed.py --width 32 --seed 3296833456 --prefix "" | |
| parameter int LfsrWidth = 32; | |
| typedef logic [LfsrWidth-1:0] lfsr_seed_t; | |
| typedef logic [LfsrWidth-1:0][$clog2(LfsrWidth)-1:0] lfsr_perm_t; | |
| parameter lfsr_seed_t RndCnstLfsrSeedDefault = 32'h10a81ea5; | |
| parameter lfsr_perm_t RndCnstLfsrPermDefault = { | |
| 160'h438131ae2cb71ffdd2e4c29a1f412231747cd7b2 | |
| }; | |
| endpackage : sram_ctrl_pkg |