spi_nor_init...rm_erase_map(9)
π spi_nor_init_uniform_erase_map β Kernel API Manual π
okay bestie, welcome to the Kernel API Manual, this one's for spi_nor_init_uniform_erase_map(9) and it's genuinely so straightforward you're gonna eat it up. no cap, this is a little setup function that hands your SPI NOR flash a nice tidy uniform erase map, and honestly? iconic behaviour.
β¨ NAME β¨
spi_nor_init_uniform_erase_map β Initialize uniform erase map π
πΈ SYNOPSIS πΈ
void spi_nor_init_uniform_erase_map (struct spi_nor_erase_map *map , u8
erase_mask , u64 flash_size );
like, look at it. void, so nothing comes back out π. it just goes in and does the thing. respect.
π¦ ARGUMENTS π¦
mapβ the erase map of the SPI NOR πΊοΈβ¨ this is the struct you're initializing, the main character of the whole operation.erase_maskβ bitmask encoding erase types that can erase the entire flash memory π₯π think of it as a little picker: which erase types are allowed to nuke the whole chip? the bits say it all.flash_sizeβ the spi nor flash memory size ππ yep, the size. of the flash. that's the vibe.
π SEE ALSO π
Kernel file ./drivers/mtd/spi-nor/core.c β the home base π π
and here is the whole friend group, in order, no notes, all of them, fr fr:
spi_nor_get_cmd_ext(9)spi_nor_spimem_setup_op(9)spi_nor_spimem_bounce(9)spi_nor_spimem_exec_op(9)spi_nor_spimem_read_data(9)spi_nor_read_data(9)spi_nor_spimem_write_data(9)spi_nor_write_data(9)spi_nor_read_any_reg(9)spi_nor_write_any_volatile_reg(9)spi_nor_write_enable(9)spi_nor_write_disable(9)spi_nor_read_id(9)spi_nor_read_sr(9)spi_nor_read_cr(9)spi_nor_set_4byte_addr_mode_en4b_ex4b(9)spi_nor_set_4byte_addr_mode_wren_en4b_ex4b(9)spi_nor_set_4byte_addr_mode_brwr(9)spi_nor_sr_ready(9)spi_nor_use_parallel_locking(9)spi_nor_ready(9)spi_nor_wait_till_ready_with_timeout(9)spi_nor_wait_till_ready(9)spi_nor_global_block_unlock(9)spi_nor_write_sr(9)spi_nor_write_sr1_and_check(9)spi_nor_write_16bit_sr_and_check(9)spi_nor_write_16bit_cr_and_check(9)spi_nor_write_16bit_sr_cr_and_check(9)spi_nor_write_sr_and_check(9)spi_nor_write_sr_cr_and_check(9)spi_nor_write_sr2(9)spi_nor_read_sr2(9)spi_nor_erase_die(9)spi_nor_div_by_erase_size(9)spi_nor_find_best_erase_type(9)spi_nor_init_erase_cmd(9)spi_nor_destroy_erase_cmd_list(9)spi_nor_init_erase_cmd_list(9)spi_nor_erase_multi_sectors(9)spi_nor_sr1_bit6_quad_enable(9)spi_nor_sr2_bit1_quad_enable(9)spi_nor_sr2_bit7_quad_enable(9)spi_nor_spimem_check_read_pp_op(9)spi_nor_spimem_check_readop(9)spi_nor_spimem_check_pp(9)spi_nor_spimem_adjust_hwcaps(9)spi_nor_set_erase_type(9)spi_nor_mask_erase_type(9)spi_nor_select_uniform_erase(9)spi_nor_manufacturer_init_params(9)spi_nor_no_sfdp_init_params(9)spi_nor_init_flags(9)spi_nor_init_fixup_flags(9)spi_nor_late_init_params(9)spi_nor_sfdp_init_params_deprecated(9)spi_nor_init_params_deprecated(9)spi_nor_init_default_params(9)spi_nor_init_params(9)spi_nor_quad_enable(9)spi_nor_set_4byte_addr_mode(9)spi_nor_soft_reset(9)
and that's the whole page bestie, go forth and initialize your uniform erase map πβ¨
this lil masterpiece lives in ./drivers/mtd/spi-nor, dated October 2026 β mwah, xoxo, go touch some flash ππ¦
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms