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mtd: spi-nor: parse SFDP Sector Map Parameter Table

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Add support for the SFDP (JESD216B) Sector Map Parameter Table. This
table is optional, but when available, we parse it to identify the
location and size of sectors within the main data array of the
flash memory device and to identify which Erase Types are supported by
each sector.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Tudor Ambarus
2018-09-11 18:40:07 +03:00
committed by Boris Brezillon
parent 5390a8df76
commit b038e8e3be
2 changed files with 315 additions and 16 deletions
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12
include/linux/mtd/spi-nor.h
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@@ -419,6 +419,18 @@ spi_nor_region_end(const struct spi_nor_erase_region *region)
return (region->offset & ~SNOR_ERASE_FLAGS_MASK) + region->size;
}
static void __maybe_unused
spi_nor_region_mark_end(struct spi_nor_erase_region *region)
{
region->offset |= SNOR_LAST_REGION;
}
static void __maybe_unused
spi_nor_region_mark_overlay(struct spi_nor_erase_region *region)
{
region->offset |= SNOR_OVERLAID_REGION;
}
static bool __maybe_unused spi_nor_has_uniform_erase(const struct spi_nor *nor)
{
return !!nor->erase_map.uniform_erase_type;