mtd/spi-nor/sfdp.c

75 	 * op code and erase sector size to be used by Sector Erase commands.
311  * spi_nor_set_erase_settings_from_bfpt() - set erase type settings from BFPT
312  * @erase:	pointer to a structure that describes a SPI NOR erase type
313  * @size:	the size of the sector/block erased by the erase type
314  * @opcode:	the SPI command op code to erase the sector/block
315  * @i:		erase type index as sorted in the Basic Flash Parameter Table
324 spi_nor_set_erase_settings_from_bfpt(struct spi_nor_erase_type *erase,
327 	erase->idx = i;
328 	spi_nor_set_erase_type(erase, size, opcode);
332  * spi_nor_map_cmp_erase_type() - compare the map's erase types by size
337  * map's erase types, the smallest erase type size being the first member in the
350  * spi_nor_sort_erase_mask() - sort erase mask
351  * @map:	the erase map of the SPI NOR
352  * @erase_mask:	the erase type mask to be sorted
354  * Replicate the sort done for the map's erase types in BFPT: sort the erase
355  * mask in ascending order with the smallest erase type size starting from
356  * BIT(0) in the sorted erase mask.
358  * Return: sorted erase mask.
369 	/* Replicate the sort done for the map's erase types. */
378  * spi_nor_regions_sort_erase_types() - sort erase types in each region
379  * @map:	the erase map of the SPI NOR
381  * Function assumes that the erase types defined in the erase map are already
382  * sorted in ascending order, with the smallest erase type size being the first
384  * erase types. Each region's erase bitmask will indicate which erase types are
385  * supported from the sorted erase types defined in the erase map.
386  * Sort the all region's erase type at init in order to speed up the process of
387  * finding the best erase command at runtime.
399 		/* Overwrite erase mask. */
517 	 * Sector Erase settings. Reinitialize the uniform erase map using the
543 	 * erase size being the first member in the erase_type array.
548 	 * Sort the erase types in the uniform region in order to update the
550 	 * selecting the uniform erase.
805  * @region:	pointer to a structure that describes a SPI NOR erase region
806  * @erase:	pointer to a structure that describes a SPI NOR erase type
807  * @erase_type:	erase type bitmask
811 			     const struct spi_nor_erase_type *erase,
817 		if (!(erase[i].size && erase_type & BIT(erase[i].idx)))
819 		if (region->size & erase[i].size_mask) {
827  * spi_nor_init_non_uniform_erase_map() - initialize the non-uniform erase map
837 	struct spi_nor_erase_type *erase = map->erase_type;
868 		spi_nor_region_check_overlay(&region[i], erase, erase_type);
871 		 * Save the erase types that are supported in all regions and
872 		 * can erase the entire flash memory.
877 		 * regions_erase_type mask will indicate all the erase types
900 	 * BFPT advertises all the erase types supported by all the possible
901 	 * map configurations. Mask out the erase types that are not supported
905 		if (!(regions_erase_type & BIT(erase[i].idx)))
906 			spi_nor_mask_erase_type(&erase[i]);
1066 		const struct sfdp_4bait *erase = &erases[i];
1068 		if (dwords[SFDP_DWORD(1)] & erase->supported_bit)
1072 	/* Replicate the sort done for the map's erase types in BFPT. */
1076 	 * We need at least one 4-byte op code per read, program and erase
1077 	 * operation; the .read(), .write() and .erase() hooks share the
1128 	 * this latest function implements a legacy quirk for the erase size of