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Diffstat (limited to 'docs/system/target-riscv.rst')
| -rw-r--r-- | docs/system/target-riscv.rst | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/docs/system/target-riscv.rst b/docs/system/target-riscv.rst index 4b3c783..a5cc06b 100644 --- a/docs/system/target-riscv.rst +++ b/docs/system/target-riscv.rst @@ -70,5 +70,16 @@ undocumented; you can get a complete list by running riscv/shakti-c riscv/sifive_u -RISC-V CPU features +RISC-V CPU firmware ------------------- + +When using the ``sifive_u`` or ``virt`` machine there are three different +firmware boot options: +1. ``-bios default`` - This is the default behaviour if no -bios option +is included. This option will load the default OpenSBI firmware automatically. +The firmware is included with the QEMU release and no user interaction is +required. All a user needs to do is specify the kernel they want to boot +with the -kernel option +2. ``-bios none`` - QEMU will not automatically load any firmware. It is up +to the user to load all the images they need. +3. ``-bios <file>`` - Tells QEMU to load the specified file as the firmware. |