| .. SPDX-License-Identifier: GPL-2.0+ |
| |
| Booting from eMMC using HSS |
| --------------------------- |
| |
| Building U-Boot |
| ~~~~~~~~~~~~~~~ |
| |
| 1. Add the RISC-V toolchain to your PATH. |
| 2. Setup ARCH & cross compilation environment variable: |
| |
| .. code-block:: none |
| |
| export CROSS_COMPILE=<riscv64 toolchain prefix> |
| |
| 3. make microchip_mpfs_generic_defconfig |
| 4. make |
| |
| Flashing |
| ~~~~~~~~ |
| |
| The current U-Boot port is supported in S-mode only and loaded from DRAM. |
| |
| A prior stage M-mode firmware/bootloader (e.g HSS with OpenSBI) is required to |
| boot the u-boot.bin in S-mode. |
| |
| Currently, the u-boot.bin is used as a payload of the HSS firmware (Microchip |
| boot-flow) and OpenSBI generic platform fw_payload.bin (with u-boot.bin embedded) |
| as HSS payload (Custom boot-flow) |
