Flash Layout¶
Ten64 boards have two flash IC's, which are used to house the low-level boot firmware and other useful utilities (such as the recovery image):
-
A 8MB (64Mbit) SPI NOR flash - houses ARM Trusted Firmware, U-Boot, DPAA2 FW, DPAA2 config files
-
A 256MB (2Gbit) SPI-NAND flash - contains recovery and OpenWrt (two separate partitions to support A/B upgrades)
Future variants (starting with B2B/OEM variants first) may remove the 8MB NOR flash in favour of having NAND only - the first 8MB on the NAND has been reserved to facilitate this.
NOR layout¶
| Firmware Definition | MaxSize (KiB) | Flash Offset | Hex offset | Hex size |
|---|---|---|---|---|
| RCW + PBI + BL2 (bl2.pbl) | 1048576 | 0 | 0 | 100000 |
| ATF FIP Image (fip.bin) BL31 + BL32 + BL33 | 2097152 | 1048576 | 100000 | 200000 |
| DPAA2 MC | 2097152 | 3145728 | 300000 | 200000 |
| Boot firmware environment | 524288 | 5242880 | 500000 | 80000 |
| DPAA2 DPL | 262144 | 5767168 | 580000 | 40000 |
| DPAA2 DPC | 262144 | 6029312 | 5C0000 | 40000 |
| Device Tree | 262144 | 6291456 | 600000 | 40000 |
NAND layout¶
| Firmware Definition | MaxSize (KiB) | Flash Offset | Hex offset | Hex size |
|---|---|---|---|---|
| Reserved (future boot from NAND) | 8388608 | 0 | 0 | 800000 |
| Recovery | 33554432 | 8388608 | 800000 | 2000000 |
| OpenWrt ubifs (slot A) | 113246208 | 41943040 | 2800000 | 6C00000 |
| OpenWrt ubifs (slot B) | 113246208 | 155189248 | 9400000 | 6C00000 |
mtdparts and kernel mtd output:¶
# mtdparts on u-boot environment and kernel command line
mtdparts=mtdparts=spi-nand0:8m(reserved),32m(recovery),108m(ubia),108m(ubib);nor1:1m(bl2),2m(bl3),2m(mcfirmware),512k(ubootenv),256k(dpl),256k(dpc),256k(devicetree)
# /proc/mtd:
mtd0: 00100000 00001000 "bl2"
mtd1: 00200000 00001000 "bl3"
mtd2: 00200000 00001000 "mcfirmware"
mtd3: 00080000 00001000 "ubootenv"
mtd4: 00040000 00001000 "dpl"
mtd5: 00040000 00001000 "dpc"
mtd6: 00040000 00001000 "devicetree"
mtd7: 00800000 00020000 "nand-boot-reserved"
mtd8: 02000000 00020000 "recovery"
mtd9: 06c00000 00020000 "ubia"
mtd10: 06c00000 00020000 "ubib"