|2.0.0
|Jan 2020
|[[BELK/BXELK_software_components#BELK_4.1.0|4.1.10]]|Updated for BELK/BXELK 4.1.10
|-
|}
NOR and NAND flashes are managed as [[Memory_Tecnology_Device_(MTD)|MTD devices]].
Generally speaking, NAND flash memory is partitons partitions are defined in using the devitetreekernel command line:
<pre>
partition@nand-partition-table { label = "nand-SPL"; reg = <0x0 0x80000Bora>; };pri mtdparts partition@nand-uboot { label mtdparts= "nand-uboot"; reg mtdparts= <0x80000 0x80000>; }; partition@nandpl35x-uboot-env1 { label = "nand-:256K(spl),768K(uboot-),256K(env1"; reg = <0x100000 0x40000>; }; partition@nand-uboot-env2 { label = "nand-uboot-),256K(env2"; reg = <0x140000 0x40000>; }; partition@nand),6M(fpga),512K(fdt),8M(kernel),-bitstream { label = "(nand-bitstream";ubi) reg = <0x180000 0x440000Bora>; }; partition@nand-device-tree { label = "nand-device-tree"; reg = <0x5C0000 0x40000>; }; partition@nand-linux { label = "nand-linux"; reg = <0x600000 0x400000>; }; partition@nand-rootfs { label = "nand-rootfs"; reg = <0xA00000 0x1F600000>; };
</pre>
defines these adding <code>addmisc</code> to the <code>bootargs</code> parameters list. The kernel ''dmesg'' will configure the NAND partitionsin the following way: <pre>[ 1.148350] Creating 8 MTD partitions on "pl35x-nand":[ 1.153486] 0x000000000000-0x000000040000 : "spl"[ 1.170502] 0x000000040000-0x000000100000 : "uboot"[ 1.186404] 0x000000100000-0x000000140000 : "env1"[ 1.202301] 0x000000140000-0x000000180000 : "env2"[ 1.218170] 0x000000180000-0x000000780000 : "fpga"[ 1.229456] 0x000000780000-0x000000800000 : "fdt"[ 1.237981] 0x000000800000-0x000001000000 : "kernel"[ 1.244063] 0x000001000000-0x000040000000 : "nand-ubi"</pre>
<pre>
root@bora:~# cat /proc/mtd
dev: size erasesize name
mtd0: 00080000 00040000 00020000 "nand-SPLspl"mtd1: 00080000 000c0000 00020000 "nand-uboot"mtd2: 00040000 00020000 "nand-uboot-env1"mtd3: 00040000 00020000 "nand-uboot-env2"mtd4: 00440000 00600000 00020000 "nand-bitstreamfpga"mtd5: 00040000 00080000 00020000 "nand-device-treefdt"mtd6: 00400000 00800000 00020000 "nand-linuxkernel"mtd7: 1f600000 3f000000 00020000 "nand-rootfsubi"
</pre>
