STRUCT SPI_NOR_ERASE_MAP(9)

💅 struct spi_nor_erase_map(9) 💅

okay bestie, so this page lives in the Kernel API Manual and it's literally all about struct spi_nor_erase_map — the structure that describes the SPI NOR erase map 🗺️✨ yes, the whole map. main character struct energy fr fr.

---

🌸 NAME 🌸

struct spi_nor_erase_map — the structure that describes the SPI NOR erase map 🎀

---

✨ SYNOPSIS ✨

struct spi_nor_erase_map {
    struct spi_nor_erase_region     *regions;
    struct spi_nor_erase_region     uniform_region;
    struct spi_nor_erase_type       erase_type[SNOR_ERASE_TYPE_MAX];
    unsigned int                    n_regions;
 };

look at her. four members. immaculate. copy it exactly like that, no cap 💅

---

🫶 Members 🫶

• regions — an array of erase regions 💖 these regions are consecutive in address space, and walking through them is done incrementally. like girl, one after the other, in order, no skipping 🚶‍♀️
• uniform_region — a pre-allocated erase region for SPI NOR with a uniform sector size. that's the legacy implementation, just so u know 🧚 it's giving "we keep her around for the old stuff"
• erase_type — an array of erase types shared by all the regions 🔥 and listen: the erase types are sorted in ascending order, with the smallest Erase Type size being the first member in the erase_type array. smallest first, periodt 📏
• n_regions — number of erase regions. literally just the count, bestie 🔢

---

👑 SEE ALSO 👑

• Kernel file ./drivers/mtd/spi-nor/core.h
• struct spi_nor_erase_type(9)
• struct spi_nor_erase_command(9)
• struct spi_nor_erase_region(9)
• struct spi_nor_locking_ops(9)
• struct spi_nor_otp_organization(9)
• struct spi_nor_otp_ops(9)
• struct spi_nor_otp(9)
• struct spi_nor_flash_parameter(9)
• struct spi_nor_fixups(9)
• struct spi_nor_id(9)
• struct flash_info(9)
• struct spi_nor_manufacturer(9)
• struct sfdp(9)
• spi_nor_needs_sfdp(9)

like, the whole friend group showed up 🌈🦋

---

ngl this one's short but she ate 💀 everything above is exactly what's in the page — don't go inventing extra behaviour, iykyk 🙈

---

mwah, that's a wrap 🍓 this lil page comes to u from ./drivers/mtd/spi-nor, dated October 2026, and it's struct spi_nor_erase_map(9) forever and always 💜✨🎀