LoongArch: Add boot and setup routines
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:WANG Xuerui <git@xen0n.name> Reviewed-by:
Jiaxun Yang <jiaxun.yang@flygoat.com> Co-developed-by:
Yun Liu <liuyun@loongson.cn> Signed-off-by:
Yun Liu <liuyun@loongson.cn> Signed-off-by:
Huacai Chen <chenhuacai@loongson.cn>
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