FMC外设用于将STM32 MPU与SLC 8位或16位NAND闪存设备接口。
FMC NAND控制器支持：
与静态内存映射设备的接口，包括：
NOR Flash memory
Static or pseudo-static random access memory (SRAM, PSRAM)
NAND Flash memory with 4-bit/8-bit BCH hardware ECC
- 支持8bit，16bit数据宽度
- 可编程纠错能力(ECC)使用BCH8，BCH4或Hamming
- 支持可编程的页面大小为2048、4096和8192字节
- 支持可编程的存储器时序
| Domain | Peripheral | Runtime allocation | Comment | |||
|---|---|---|---|---|---|---|
| Instance | Cortex-A7 secure (OP-TEE) | Cortex-A7 non-secure (Linux) | Cortex-M4 (STM32Cube) | |||
| Mass storage | FMC | FMC | ☐ | |||
&fmc {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&fmc_pins_a>;
pinctrl-1 = <&fmc_sleep_pins_a>;
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
nand: nand@0 {
reg = <0>;
nand-on-flash-bbt;
#address-cells = <1>;
#size-cells = <1>;
nand-ecc-strength = <4>;
nand-ecc-step-size = <512>;
partition@0 {
label = "fsbl";
reg = <0x0 0x200000>;
};
partition@200000 {
label = "ssbl1";
reg = <0x200000 0x400000>;
};
partition@40000 {
label = "ssbl2";
reg = <0x400000 0x600000>;
};
partition@600000 {
label = "UBI";
reg = <0x600000 0xf800000>;
};
};
};