diff options
Diffstat (limited to 'arch/arm/mach-imx/imx6-bbu-nand.c')
-rw-r--r-- | arch/arm/mach-imx/imx6-bbu-nand.c | 491 |
1 files changed, 0 insertions, 491 deletions
diff --git a/arch/arm/mach-imx/imx6-bbu-nand.c b/arch/arm/mach-imx/imx6-bbu-nand.c deleted file mode 100644 index d2bfedbad5..0000000000 --- a/arch/arm/mach-imx/imx6-bbu-nand.c +++ /dev/null @@ -1,491 +0,0 @@ -/* - * Copyright (C) 2014 Sascha Hauer, Pengutronix - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 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 - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation. - * - */ - -#define pr_fmt(fmt) "imx6-bbu-nand: " fmt - -#include <filetype.h> -#include <common.h> -#include <malloc.h> -#include <errno.h> -#include <fcntl.h> -#include <ioctl.h> -#include <linux/sizes.h> -#include <bbu.h> -#include <fs.h> -#include <mach/bbu.h> -#include <linux/mtd/mtd-abi.h> -#include <linux/mtd/nand_mxs.h> -#include <linux/mtd/mtd.h> -#include <linux/stat.h> - -struct dbbt_block { - uint32_t Checksum; - uint32_t FingerPrint; - uint32_t Version; - uint32_t reserved; - uint32_t DBBTNumOfPages; -}; - -struct fcb_block { - uint32_t Checksum; /* First fingerprint in first byte */ - uint32_t FingerPrint; /* 2nd fingerprint at byte 4 */ - uint32_t Version; /* 3rd fingerprint at byte 8 */ - uint8_t DataSetup; - uint8_t DataHold; - uint8_t AddressSetup; - uint8_t DSAMPLE_TIME; - /* These are for application use only and not for ROM. */ - uint8_t NandTimingState; - uint8_t REA; - uint8_t RLOH; - uint8_t RHOH; - uint32_t PageDataSize; /* 2048 for 2K pages, 4096 for 4K pages */ - uint32_t TotalPageSize; /* 2112 for 2K pages, 4314 for 4K pages */ - uint32_t SectorsPerBlock; /* Number of 2K sections per block */ - uint32_t NumberOfNANDs; /* Total Number of NANDs - not used by ROM */ - uint32_t TotalInternalDie; /* Number of separate chips in this NAND */ - uint32_t CellType; /* MLC or SLC */ - uint32_t EccBlockNEccType; /* Type of ECC, can be one of BCH-0-20 */ - uint32_t EccBlock0Size; /* Number of bytes for Block0 - BCH */ - uint32_t EccBlockNSize; /* Block size in bytes for all blocks other than Block0 - BCH */ - uint32_t EccBlock0EccType; /* Ecc level for Block 0 - BCH */ - uint32_t MetadataBytes; /* Metadata size - BCH */ - uint32_t NumEccBlocksPerPage; /* Number of blocks per page for ROM use - BCH */ - uint32_t EccBlockNEccLevelSDK; /* Type of ECC, can be one of BCH-0-20 */ - uint32_t EccBlock0SizeSDK; /* Number of bytes for Block0 - BCH */ - uint32_t EccBlockNSizeSDK; /* Block size in bytes for all blocks other than Block0 - BCH */ - uint32_t EccBlock0EccLevelSDK; /* Ecc level for Block 0 - BCH */ - uint32_t NumEccBlocksPerPageSDK;/* Number of blocks per page for SDK use - BCH */ - uint32_t MetadataBytesSDK; /* Metadata size - BCH */ - uint32_t EraseThreshold; /* To set into BCH_MODE register */ - uint32_t BootPatch; /* 0 for normal boot and 1 to load patch starting next to FCB */ - uint32_t PatchSectors; /* Size of patch in sectors */ - uint32_t Firmware1_startingPage;/* Firmware image starts on this sector */ - uint32_t Firmware2_startingPage;/* Secondary FW Image starting Sector */ - uint32_t PagesInFirmware1; /* Number of sectors in firmware image */ - uint32_t PagesInFirmware2; /* Number of sector in secondary FW image */ - uint32_t DBBTSearchAreaStartAddress; /* Page address where dbbt search area begins */ - uint32_t BadBlockMarkerByte; /* Byte in page data that have manufacturer marked bad block marker, */ - /* this will be swapped with metadata[0] to complete page data. */ - uint32_t BadBlockMarkerStartBit;/* For BCH ECC sizes other than 8 and 16 the bad block marker does not */ - /* start at 0th bit of BadBlockMarkerByte. This field is used to get to */ - /* the start bit of bad block marker byte with in BadBlockMarkerByte */ - uint32_t BBMarkerPhysicalOffset;/* FCB value that gives byte offset for bad block marker on physical NAND page */ - uint32_t BCHType; - - uint32_t TMTiming2_ReadLatency; - uint32_t TMTiming2_PreambleDelay; - uint32_t TMTiming2_CEDelay; - uint32_t TMTiming2_PostambleDelay; - uint32_t TMTiming2_CmdAddPause; - uint32_t TMTiming2_DataPause; - uint32_t TMSpeed; - uint32_t TMTiming1_BusyTimeout; - - uint32_t DISBBM; /* the flag to enable (1)/disable(0) bi swap */ - uint32_t BBMarkerPhysicalOffsetInSpareData; /* The swap position of main area in spare area */ -}; - -#define BF_VAL(v, bf) (((v) & bf##_MASK) >> bf##_OFFSET) -#define GETBIT(v,n) (((v) >> (n)) & 0x1) - -static uint8_t calculate_parity_13_8(uint8_t d) -{ - uint8_t p = 0; - - p |= (GETBIT(d, 6) ^ GETBIT(d, 5) ^ GETBIT(d, 3) ^ GETBIT(d, 2)) << 0; - p |= (GETBIT(d, 7) ^ GETBIT(d, 5) ^ GETBIT(d, 4) ^ GETBIT(d, 2) ^ GETBIT(d, 1)) << 1; - p |= (GETBIT(d, 7) ^ GETBIT(d, 6) ^ GETBIT(d, 5) ^ GETBIT(d, 1) ^ GETBIT(d, 0)) << 2; - p |= (GETBIT(d, 7) ^ GETBIT(d, 4) ^ GETBIT(d, 3) ^ GETBIT(d, 0)) << 3; - p |= (GETBIT(d, 6) ^ GETBIT(d, 4) ^ GETBIT(d, 3) ^ GETBIT(d, 2) ^ GETBIT(d, 1) ^ GETBIT(d, 0)) << 4; - return p; -} - -static void encode_hamming_13_8(void *_src, void *_ecc, size_t size) -{ - int i; - uint8_t *src = _src; - uint8_t *ecc = _ecc; - - for (i = 0; i < size; i++) - ecc[i] = calculate_parity_13_8(src[i]); -} - -static uint32_t calc_chksum(void *buf, size_t size) -{ - u32 chksum = 0; - u8 *bp = buf; - size_t i; - - for (i = 0; i < size; i++) - chksum += bp[i]; - - return ~chksum; -} - -static __maybe_unused void dump_fcb(void *buf) -{ - struct fcb_block *fcb = buf; - - pr_debug("Checksum: 0x%08x\n", fcb->Checksum); - pr_debug("FingerPrint: 0x%08x\n", fcb->FingerPrint); - pr_debug("Version: 0x%08x\n", fcb->Version); - pr_debug("DataSetup: 0x%02x\n", fcb->DataSetup); - pr_debug("DataHold: 0x%02x\n", fcb->DataHold); - pr_debug("AddressSetup: 0x%02x\n", fcb->AddressSetup); - pr_debug("DSAMPLE_TIME: 0x%02x\n", fcb->DSAMPLE_TIME); - pr_debug("NandTimingState: 0x%02x\n", fcb->NandTimingState); - pr_debug("REA: 0x%02x\n", fcb->REA); - pr_debug("RLOH: 0x%02x\n", fcb->RLOH); - pr_debug("RHOH: 0x%02x\n", fcb->RHOH); - pr_debug("PageDataSize: 0x%08x\n", fcb->PageDataSize); - pr_debug("TotalPageSize: 0x%08x\n", fcb->TotalPageSize); - pr_debug("SectorsPerBlock: 0x%08x\n", fcb->SectorsPerBlock); - pr_debug("NumberOfNANDs: 0x%08x\n", fcb->NumberOfNANDs); - pr_debug("TotalInternalDie: 0x%08x\n", fcb->TotalInternalDie); - pr_debug("CellType: 0x%08x\n", fcb->CellType); - pr_debug("EccBlockNEccType: 0x%08x\n", fcb->EccBlockNEccType); - pr_debug("EccBlock0Size: 0x%08x\n", fcb->EccBlock0Size); - pr_debug("EccBlockNSize: 0x%08x\n", fcb->EccBlockNSize); - pr_debug("EccBlock0EccType: 0x%08x\n", fcb->EccBlock0EccType); - pr_debug("MetadataBytes: 0x%08x\n", fcb->MetadataBytes); - pr_debug("NumEccBlocksPerPage: 0x%08x\n", fcb->NumEccBlocksPerPage); - pr_debug("EccBlockNEccLevelSDK: 0x%08x\n", fcb->EccBlockNEccLevelSDK); - pr_debug("EccBlock0SizeSDK: 0x%08x\n", fcb->EccBlock0SizeSDK); - pr_debug("EccBlockNSizeSDK: 0x%08x\n", fcb->EccBlockNSizeSDK); - pr_debug("EccBlock0EccLevelSDK: 0x%08x\n", fcb->EccBlock0EccLevelSDK); - pr_debug("NumEccBlocksPerPageSDK: 0x%08x\n", fcb->NumEccBlocksPerPageSDK); - pr_debug("MetadataBytesSDK: 0x%08x\n", fcb->MetadataBytesSDK); - pr_debug("EraseThreshold: 0x%08x\n", fcb->EraseThreshold); - pr_debug("BootPatch: 0x%08x\n", fcb->BootPatch); - pr_debug("PatchSectors: 0x%08x\n", fcb->PatchSectors); - pr_debug("Firmware1_startingPage: 0x%08x\n", fcb->Firmware1_startingPage); - pr_debug("Firmware2_startingPage: 0x%08x\n", fcb->Firmware2_startingPage); - pr_debug("PagesInFirmware1: 0x%08x\n", fcb->PagesInFirmware1); - pr_debug("PagesInFirmware2: 0x%08x\n", fcb->PagesInFirmware2); - pr_debug("DBBTSearchAreaStartAddress: 0x%08x\n", fcb->DBBTSearchAreaStartAddress); - pr_debug("BadBlockMarkerByte: 0x%08x\n", fcb->BadBlockMarkerByte); - pr_debug("BadBlockMarkerStartBit: 0x%08x\n", fcb->BadBlockMarkerStartBit); - pr_debug("BBMarkerPhysicalOffset: 0x%08x\n", fcb->BBMarkerPhysicalOffset); - pr_debug("BCHType: 0x%08x\n", fcb->BCHType); - pr_debug("TMTiming2_ReadLatency: 0x%08x\n", fcb->TMTiming2_ReadLatency); - pr_debug("TMTiming2_PreambleDelay: 0x%08x\n", fcb->TMTiming2_PreambleDelay); - pr_debug("TMTiming2_CEDelay: 0x%08x\n", fcb->TMTiming2_CEDelay); - pr_debug("TMTiming2_PostambleDelay: 0x%08x\n", fcb->TMTiming2_PostambleDelay); - pr_debug("TMTiming2_CmdAddPause: 0x%08x\n", fcb->TMTiming2_CmdAddPause); - pr_debug("TMTiming2_DataPause: 0x%08x\n", fcb->TMTiming2_DataPause); - pr_debug("TMSpeed: 0x%08x\n", fcb->TMSpeed); - pr_debug("TMTiming1_BusyTimeout: 0x%08x\n", fcb->TMTiming1_BusyTimeout); - pr_debug("DISBBM: 0x%08x\n", fcb->DISBBM); - pr_debug("BBMarkerPhysOfsInSpareData: 0x%08x\n", fcb->BBMarkerPhysicalOffsetInSpareData); -} - -static __maybe_unused ssize_t raw_read_page(struct mtd_info *mtd, void *dst, loff_t offset) -{ - struct mtd_oob_ops ops; - ssize_t ret; - - ops.mode = MTD_OPS_RAW; - ops.ooboffs = 0; - ops.datbuf = dst; - ops.len = mtd->writesize; - ops.oobbuf = dst + mtd->writesize; - ops.ooblen = mtd->oobsize; - ret = mtd_read_oob(mtd, offset, &ops); - - return ret; -} - -static ssize_t raw_write_page(struct mtd_info *mtd, void *buf, loff_t offset) -{ - struct mtd_oob_ops ops; - ssize_t ret; - - ops.mode = MTD_OPS_RAW; - ops.ooboffs = 0; - ops.datbuf = buf; - ops.len = mtd->writesize; - ops.oobbuf = buf + mtd->writesize; - ops.ooblen = mtd->oobsize; - ret = mtd_write_oob(mtd, offset, &ops); - - return ret; -} - -static int fcb_create(struct fcb_block *fcb, struct mtd_info *mtd) -{ - fcb->FingerPrint = 0x20424346; - fcb->Version = 0x01000000; - fcb->PageDataSize = mtd->writesize; - fcb->TotalPageSize = mtd->writesize + mtd->oobsize; - fcb->SectorsPerBlock = mtd->erasesize / mtd->writesize; - - /* Divide ECC strength by two and save the value into FCB structure. */ - fcb->EccBlock0EccType = - mxs_nand_get_ecc_strength(mtd->writesize, mtd->oobsize) >> 1; - fcb->EccBlockNEccType = fcb->EccBlock0EccType; - - /* Also hardcoded in kobs-ng */ - fcb->DataSetup = 80; - fcb->DataHold = 60; - fcb->AddressSetup = 25; - fcb->DSAMPLE_TIME = 6; - fcb->MetadataBytes = 0x0000000a; - fcb->EccBlock0Size = 0x00000200; - fcb->EccBlockNSize = 0x00000200; - - fcb->NumEccBlocksPerPage = mtd->writesize / fcb->EccBlock0Size - 1; - - /* DBBT search area starts at third block */ - fcb->DBBTSearchAreaStartAddress = mtd->erasesize / mtd->writesize * 2; - - fcb->BadBlockMarkerByte = mxs_nand_mark_byte_offset(mtd); - fcb->BadBlockMarkerStartBit = mxs_nand_mark_bit_offset(mtd); - - fcb->BBMarkerPhysicalOffset = mtd->writesize; - - fcb->Checksum = calc_chksum((void *)fcb + 4, sizeof(*fcb) - 4); - - return 0; -} - -static int imx6_bbu_erase(struct mtd_info *mtd) -{ - uint64_t offset = 0; - int len = SZ_2M; - struct erase_info erase; - int ret; - - while (len > 0) { - pr_debug("erasing at 0x%08llx\n", offset); - if (mtd_block_isbad(mtd, offset)) { - offset += mtd->erasesize; - pr_debug("erase skip block @ 0x%08llx\n", offset); - continue; - } - - memset(&erase, 0, sizeof(erase)); - erase.addr = offset; - erase.len = mtd->erasesize; - - ret = mtd_erase(mtd, &erase); - if (ret) - return ret; - - offset += mtd->erasesize; - len -= mtd->erasesize; - } - - return 0; -} - -static int imx6_bbu_write_firmware(struct mtd_info *mtd, int block, void *buf, size_t len) -{ - uint64_t offset = block * mtd->erasesize; - int ret; - size_t written; - - while (len > 0) { - int now = min(len, mtd->erasesize); - - pr_debug("writing %p at 0x%08llx, left 0x%08x\n", - buf, offset, len); - - if (mtd_block_isbad(mtd, offset)) { - offset += mtd->erasesize; - block++; - pr_debug("write skip block @ 0x%08llx\n", offset); - continue; - } - - ret = mtd_write(mtd, offset, now, &written, buf); - if (ret) - return ret; - - offset += now; - len -= now; - buf += now; - block++; - } - - return block; -} - -static int dbbt_data_create(struct mtd_info *mtd, void *buf, int block_last) -{ - int n; - int n_bad_blocks = 0; - uint32_t *bb = buf + 0x8; - uint32_t *n_bad_blocksp = buf + 0x4; - - for (n = 0; n <= block_last; n++) { - loff_t offset = n * mtd->erasesize; - if (mtd_block_isbad(mtd, offset)) { - n_bad_blocks++; - *bb = n; - bb++; - } - } - - *n_bad_blocksp = n_bad_blocks; - - return n_bad_blocks; -} - -static int imx6_bbu_nand_update(struct bbu_handler *handler, struct bbu_data *data) -{ - struct cdev *bcb_cdev; - struct mtd_info *mtd; - int ret, block_fw1, block_fw2, block_last; - struct fcb_block *fcb; - struct dbbt_block *dbbt; - void *fcb_raw_page, *dbbt_page, *dbbt_data_page; - void *ecc; - int written; - void *fw; - unsigned fw_size; - int i; - - if (file_detect_type(data->image, data->len) != filetype_arm_barebox && - !bbu_force(data, "Not an ARM barebox image")) - return -EINVAL; - - ret = bbu_confirm(data); - if (ret) - return ret; - - bcb_cdev = cdev_by_name("nand0"); - if (!bcb_cdev) { - pr_err("%s: No FCB device!\n", __func__); - return -ENODEV; - } - - mtd = bcb_cdev->mtd; - - fcb_raw_page = xzalloc(mtd->writesize + mtd->oobsize); - - fcb = fcb_raw_page + 12; - ecc = fcb_raw_page + 512 + 12; - - dbbt_page = xzalloc(mtd->writesize); - dbbt_data_page = xzalloc(mtd->writesize); - dbbt = dbbt_page; - - /* - * We have to write one additional page to make the ROM happy. - * Maybe the PagesInFirmwarex fields are really the number of pages - 1. - * kobs-ng has the same. - */ - fw_size = ALIGN(data->len + mtd->writesize, mtd->writesize); - fw = xzalloc(fw_size); - memcpy(fw, data->image, data->len); - - block_fw1 = 4; - - ret = imx6_bbu_erase(mtd); - if (ret) - goto out; - - ret = imx6_bbu_write_firmware(mtd, block_fw1, fw, fw_size); - if (ret < 0) - goto out; - - block_fw2 = ret; - - ret = imx6_bbu_write_firmware(mtd, block_fw2, fw, fw_size); - if (ret < 0) - goto out; - - block_last = ret; - - fcb->Firmware1_startingPage = block_fw1 * mtd->erasesize / mtd->writesize; - fcb->Firmware2_startingPage = block_fw2 * mtd->erasesize / mtd->writesize; - fcb->PagesInFirmware1 = ALIGN(data->len, mtd->writesize) / mtd->writesize; - fcb->PagesInFirmware2 = fcb->PagesInFirmware1; - - fcb_create(fcb, mtd); - encode_hamming_13_8(fcb, ecc, 512); - - /* - * Set the first and second byte of OOB data to 0xFF, not 0x00. These - * bytes are used as the Manufacturers Bad Block Marker (MBBM). Since - * the FCB is mostly written to the first page in a block, a scan for - * factory bad blocks will detect these blocks as bad, e.g. when - * function nand_scan_bbt() is executed to build a new bad block table. - */ - memset(fcb_raw_page + mtd->writesize, 0xFF, 2); - - ret = raw_write_page(mtd, fcb_raw_page, 0); - if (ret) - goto out; - - ret = raw_write_page(mtd, fcb_raw_page, mtd->erasesize); - if (ret) - goto out; - - dbbt->Checksum = 0; - dbbt->FingerPrint = 0x54424244; - dbbt->Version = 0x01000000; - - ret = dbbt_data_create(mtd, dbbt_data_page, block_last); - if (ret < 0) - goto out; - - if (ret > 0) - dbbt->DBBTNumOfPages = 1; - - for (i = 2; i < 4; i++) { - ret = mtd_write(mtd, mtd->erasesize * i, 2048, &written, dbbt_page); - if (ret) - goto out; - - if (dbbt->DBBTNumOfPages > 0) { - ret = mtd_write(mtd, mtd->erasesize * i + mtd->writesize * 4, - 2048, &written, dbbt_data_page); - if (ret) - goto out; - } - } - -out: - free(dbbt_page); - free(dbbt_data_page); - free(fcb_raw_page); - free(fw); - - return ret; -} - -int imx6_bbu_nand_register_handler(const char *name, unsigned long flags) -{ - struct bbu_handler *handler; - int ret; - - handler = xzalloc(sizeof(*handler)); - handler->devicefile = "/dev/nand0"; - handler->name = name; - handler->flags = flags; - handler->handler = imx6_bbu_nand_update; - - ret = bbu_register_handler(handler); - if (ret) - free(handler); - - return ret; -} |