diff options
Diffstat (limited to 'drivers/mtd/nand/core.c')
| -rw-r--r-- | drivers/mtd/nand/core.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/drivers/mtd/nand/core.c b/drivers/mtd/nand/core.c index 44b001e35..9f0331ad7 100644 --- a/drivers/mtd/nand/core.c +++ b/drivers/mtd/nand/core.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2019, STMicroelectronics - All Rights Reserved + * Copyright (c) 2019-2021, STMicroelectronics - All Rights Reserved * * SPDX-License-Identifier: BSD-3-Clause */ @@ -112,6 +112,47 @@ int nand_read(unsigned int offset, uintptr_t buffer, size_t length, return 0; } +int nand_seek_bb(uintptr_t base, unsigned int offset, size_t *extra_offset) +{ + unsigned int block; + unsigned int offset_block; + unsigned int max_block; + int is_bad; + size_t count_bb = 0U; + + block = base / nand_dev.block_size; + + if (offset != 0U) { + offset_block = (base + offset - 1U) / nand_dev.block_size; + } else { + offset_block = block; + } + + max_block = nand_dev.size / nand_dev.block_size; + + while (block <= offset_block) { + if (offset_block >= max_block) { + return -EIO; + } + + is_bad = nand_dev.mtd_block_is_bad(block); + if (is_bad < 0) { + return is_bad; + } + + if (is_bad == 1) { + count_bb++; + offset_block++; + } + + block++; + } + + *extra_offset = count_bb * nand_dev.block_size; + + return 0; +} + struct nand_device *get_nand_device(void) { return &nand_dev; |