Commit graph

3 commits

Author SHA1 Message Date
Lionel Debieve
f29c0702d2 feat(mtd): add platform function to allow using external buffer
The scratch buffer could be large. The new function allows
platform to defined its own external buffer or use the default
one.

Signed-off-by: Lionel Debieve <lionel.debieve@foss.st.com>
Change-Id: Ib7ab8ff19fa0a9cb06e364f058b91af58c3c471a
2022-08-30 09:20:20 +02:00
Yann Gautier
bc3eebb25d feat(nand): count bad blocks before a given offset
In case of FIP, the offsets given in the FIP header are relative.
If bad blocks are found between the FIP base address and this offset,
the offset should be updated, taking care of the bad blocks.

Change-Id: I96fefabb583b3d030ab05191bae7d45cfeefe341
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
2021-07-13 18:16:55 +02:00
Lionel Debieve
b114abb609 Add raw NAND framework
The raw NAND framework supports SLC NAND devices.

It introduces a new high level interface (io_mtd) that
defines operations a driver can register to the NAND framework.
This interface will fill in the io_mtd device specification:
	- device_size
        - erase_size
that could be used by the io_storage interface.

NAND core source file integrates the standard read loop that
performs NAND device read operations using a skip bad block strategy.
A platform buffer must be defined in case of unaligned
data. This buffer must fit to the maximum device page size
defined by PLATFORM_MTD_MAX_PAGE_SIZE.

The raw_nand.c source file embeds the specific NAND operations
to read data.
The read command is a raw page read without any ECC correction.
This can be overridden by a low level driver.
No generic support for write or erase command or software
ECC correction.

NAND ONFI detection is available and can be enabled using
NAND_ONFI_DETECT=1.
For non-ONFI NAND management, platform can define required
information.

Change-Id: Id80e9864456cf47f02b74938cf25d99261da8e82
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
2020-01-20 11:32:59 +01:00