4.11.3.3. element14 WaRP7¶

This CPU card is based on an NXP i.MX7S SoC.

4.11.3.3.1. Supported hardware¶

NXP PMIC PFUZE3000
Kingston 08EMCP04-EL3AV100 eMCP (eMMC and LPDDR3 memory in one package)
- 8 GiB eMMC Triple-Level cell NAND flash, eMMC standard 5.0 (HS400)
- 512 MiB LPDDR3 SDRAM starting at address 0x80000000

The device boots in internal boot mode from eMMC and is shipped with a vendor modified u-boot imximage.

Barebox can be used as a drop-in replacement for the shipped bootloader.

The WaRP7 IO Board has a double DIP switch where switch number two defines the boot source of the i.MX7 SoC:

+-----+
|     |
| | O | <--- on = high level
| | | |
| O | | <--- off = low level
|     |
| 1 2 |
+-----+

Bootsource is the internal eMMC:

+-----+
|     |
| O | |
| | | |
| | O | <---- eMMC
|     |
| 1 2 |
+-----+

Bootsource is the USB:

+-----+
|     |
| O O | <---- USB
| | | |
| | | |
|     |
| 1 2 |
+-----+