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Diffstat (limited to 'doc/board/microchip/mpfs_build_boot.rst')
| -rw-r--r-- | doc/board/microchip/mpfs_build_boot.rst | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/doc/board/microchip/mpfs_build_boot.rst b/doc/board/microchip/mpfs_build_boot.rst new file mode 100644 index 00000000000..1239f675ec8 --- /dev/null +++ b/doc/board/microchip/mpfs_build_boot.rst @@ -0,0 +1,29 @@ +.. 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) |