forked from Mirrors/opensbi
bc4d6108f4
This patch extends fw_payload blob to provide FW_PAYLOAD_FDT_PATH option using which we can embed custom FDT in .text section of fw_payload blob. In other words, FW_PAYLOAD_FDT_PATH is an option to forcefully override FDT passed by previous booting stage in a1 register. Signed-off-by: Anup Patel <anup.patel@wdc.com>
RISC-V Open Source Supervisor Binary Interface (OpenSBI)
The RISC-V Supervisor Binary Interface (SBI) is a recommended interface between:
- platform specific firmware running in M-mode and bootloader running in S-mode
- platform specific firmware running in M-mode and general purpose operating system running in S-mode
- hypervisor runnng in HS-mode and general purpose operating system running in VS-mode.
The RISC-V SBI spec is maintained as independent project by RISC-V Foundation at https://github.com/riscv/riscv-sbi-doc
The RISC-V OpenSBI project aims to provides an open-source and extensible implementation of the SBI spec. This project can be easily extended by RISC-V platform or RISC-V System-on-Chip vendors.
How to Build?
Below are the steps to cross-compile and install RISC-V OpenSBI:
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Setup build environment $ CROSS_COMPILE=riscv64-unknown-linux-gnu-
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Build sources $ make PLAT=<platform_name> OR $ make PLAT=<platform_name> O=<build_directory>
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Install blobs $ make PLAT=<platform_name> install OR $ make PLAT=<platform_name> I=<install_directory> install