/* * Copyright : (C) 2022 Phytium Information Technology, Inc. * All Rights Reserved. * * This program is OPEN SOURCE software: you can redistribute it and/or modify it * under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd, * either version 1.0 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the Phytium Public License for more details. * * * FilePath: fnand_ecc.c * Date: 2022-05-12 14:17:42 * LastEditTime: 2022-05-12 15:56:27 * Description:  This file is for ecc validation related api * * Modify History: * Ver   Who        Date         Changes * ----- ------     --------    -------------------------------------- * 1.0 huanghe 2022/05/10 first release */ #include "fnand_ecc.h" #include "fnand.h" #include "fnand_hw.h" #include "fdebug.h" #define FNAND_ECC_DEBUG_TAG "FNAND_ECC" #define FNAND_ECC_DEBUG_I(format, ...) FT_DEBUG_PRINT_I(FNAND_ECC_DEBUG_TAG, format, ##__VA_ARGS__) #define FNAND_ECC_DEBUG_W(format, ...) FT_DEBUG_PRINT_W(FNAND_ECC_DEBUG_TAG, format, ##__VA_ARGS__) #define FNAND_ECC_DEBUG_E(format, ...) FT_DEBUG_PRINT_E(FNAND_ECC_DEBUG_TAG, format, ##__VA_ARGS__) /** * @name: FNandGetEccTotalLength * @msg: 根据page size 与 ecc_strength（纠错个数）确定硬件ecc 产生 * @param {u32} bytes_per_page * @param {u32} ecc_strength * @return {*} * @note: */ u32 FNandGetEccTotalLength(u32 bytes_per_page, u32 ecc_strength) { int ecc_total = 0; switch (bytes_per_page) { case 0x200: if (ecc_strength == 8) { ecc_total = 0x0D; } else if (ecc_strength == 4) { ecc_total = 7; } else if (ecc_strength == 2) { ecc_total = 4; } else { ecc_total = 0; } break; case 0x800: if (ecc_strength == 8) { ecc_total = 0x34; } else if (ecc_strength == 4) { ecc_total = 0x1a; } else if (ecc_strength == 2) { ecc_total = 0xd; } else { ecc_total = 0; } break; case 0x1000: if (ecc_strength == 8) { ecc_total = 0x68; } else if (ecc_strength == 4) { ecc_total = 0x34; } else if (ecc_strength == 2) { ecc_total = 0x1a; } else { ecc_total = 0; } break; case 0x2000: if (ecc_strength == 8) { ecc_total = 0xD0; } else if (ecc_strength == 4) { ecc_total = 0x68; } else if (ecc_strength == 2) { ecc_total = 0x34; } else { ecc_total = 0; } break; case 0x4000: if (ecc_strength == 8) { ecc_total = 0x1A0; } if (ecc_strength == 4) { ecc_total = 0xD0; } else if (ecc_strength == 2) { ecc_total = 0x68; } else { ecc_total = 0; } break; default: ecc_total = 0; break; } FNAND_ECC_DEBUG_I("[%s %d]writesize: 0x%x, ecc strength: %d, ecc_total: 0x%x\n", __func__, __LINE__, bytes_per_page, ecc_strength, ecc_total); return ecc_total; } /** * @name: FNandCorrectEcc * @msg: * @note: * @return {*} * @param {uintptr_t} base_address * @param {u32} ecc_step_size 单次ecc 使用的步长大小 * @param {u32} hw_ecc_steps 一页操作需要进行的ecc 次数 * @param {u8*} buf page 页 对应的指针 * @param {u32} length */ // s32 FNandCorrectEcc(uintptr_t base_address,u32 ecc_step_size,u32 hw_ecc_steps,u8* buf ,u32 length) // { // u32 i, j; // u32 value, tmp; // int stat = 0; // if(!buf) // { // FNAND_ECC_DEBUG_E("page buffer is null"); // return -1; // } // /* i */ // for (i = 0; i < hw_ecc_steps; i++) // { // for (j = 0; j < 2; j++) { // value = FNAND_READREG(base_address, 0xB8 + 4 * (2 * i + j)); // FNAND_ECC_DEBUG_W("index:%x i is %d ,j is %d ", // 0xB8 + 4 * (2 * i + j),i,j); // if (value) // { // FNAND_ECC_DEBUG_W("offset:%x value:0x%08x\n", // 0xB8 + 4 * (2 * i + j), value); // //phytium_nfc_data_dump2(nfc, nfc->dma_buf + (ecc_step_size * i + tmp/8)/512, 512); // } // tmp = value & 0xFFFF; // if (tmp && (tmp <= 4096)) // { // tmp -= 1; // FNAND_ECC_DEBUG_W( "ECC_CORRECT %x %02x\n", // ecc_step_size * i + tmp / 8, // buf[ecc_step_size * i + tmp / 8]); // buf[ecc_step_size*i + tmp/8] ^= (0x01 << tmp%8); // stat++; // FNAND_ECC_DEBUG_W( "ECC_CORRECT xor %x %02x\n", // 0x01 << tmp % 8, // buf[ecc_step_size * i + tmp / 8]); // } // else // { // FNAND_ECC_DEBUG_E("ECC_CORRECT offset > 4096!\n"); // } // tmp = (value >> 16) & 0xFFFF; // if (tmp && (tmp <= 4096) ) // { // tmp -= 1; // FNAND_ECC_DEBUG_W( "ECC_CORRECT %x %02x\n", // ecc_step_size * i + tmp / 8, // buf[ecc_step_size * i + tmp / 8]); // buf[ecc_step_size*i + tmp/8] ^= (0x01 << tmp%8); // stat++; // FNAND_ECC_DEBUG_W( "ECC_CORRECT xor %x %02x\n", // ecc_step_size * i + tmp / 8, // buf[ecc_step_size * i + tmp / 8]); // } // else // { // FNAND_ECC_DEBUG_E("ECC_CORRECT offset > 4096!\n"); // } // } // } // return stat; // } // 校验offset 0xb8 + i * 0x10 // 校验强度为 2 j = 1 // 校验强度为 4 j = 2 // 校验强度为 8 j = 4 s32 FNandCorrectEcc(uintptr_t base_address, u32 ecc_step_size, u32 hw_ecc_steps, u8 *buf, u32 length) { u32 i, j; u32 value, tmp; int stat = 0; if (!buf) { FNAND_ECC_DEBUG_E("Page buffer is null"); return -1; } /* i */ for (i = 0; i < hw_ecc_steps; i++) { for (j = 0; j < 4; j++) { value = FNAND_READREG(base_address, 0xB8 + 0x10 * i + 4 * j); tmp = value & 0xFFFF; if (tmp && (tmp <= 4096)) { tmp -= 1; FNAND_ECC_DEBUG_W("ECC_CORRECT %x %02x\n", ecc_step_size * i + tmp / 8, buf[ecc_step_size * i + tmp / 8]); buf[ecc_step_size * i + tmp / 8] ^= (0x01 << tmp % 8); stat++; FNAND_ECC_DEBUG_W("ECC_CORRECT xor %x %02x\n", 0x01 << tmp % 8, buf[ecc_step_size * i + tmp / 8]); } tmp = (value >> 16) & 0xFFFF; if (tmp && (tmp <= 4096)) { tmp -= 1; FNAND_ECC_DEBUG_W("ECC_CORRECT %x %02x\n", ecc_step_size * i + tmp / 8, buf[ecc_step_size * i + tmp / 8]); buf[ecc_step_size * i + tmp / 8] ^= (0x01 << tmp % 8); stat++; FNAND_ECC_DEBUG_W("ECC_CORRECT xor %x %02x\n", ecc_step_size * i + tmp / 8, buf[ecc_step_size * i + tmp / 8]); } } } return stat; }