• Huacai Chen's avatar
    LoongArch: Add boot and setup routines · 628c3bb4
    Huacai Chen authored
    Add basic boot, setup and reset routines for LoongArch. Now, LoongArch
    machines use UEFI-based firmware. The firmware passes configuration
    information to the kernel via ACPI and DMI/SMBIOS.
    
    Currently an existing interface between the kernel and the bootloader
    is implemented. Kernel gets 2 values from the bootloader, passed in
    registers a0 and a1; a0 is an "EFI boot flag" distinguishing UEFI and
    non-UEFI firmware, while a1 is a pointer to an FDT with systable,
    memmap, cmdline and initrd information.
    
    The standard UEFI boot protocol (EFISTUB) will be added later.
    
    Cc: linux-efi@vger.kernel.org
    Cc: Ard Biesheuvel <ardb@kernel.org>
    Reviewed-by: default avatarWANG Xuerui <git@xen0n.name>
    Reviewed-by: default avatarJiaxun Yang <jiaxun.yang@flygoat.com>
    Co-developed-by: default avatarYun Liu <liuyun@loongson.cn>
    Signed-off-by: default avatarYun Liu <liuyun@loongson.cn>
    Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
    628c3bb4
efi.c 1.75 KB