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Author SHA1 Message Date
Ard Biesheuvel c5d5cba795 loongarch: efi: enable generic EFI compressed boot 
Wire up the generic EFI zboot support for LoongArch64

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
 2022-09-20 09:50:31 +02:00
Huacai Chen ead384d956 efi/loongarch: Add efistub booting support 
This patch adds efistub booting support, which is the standard UEFI boot
protocol for LoongArch to use.

We use generic efistub, which means we can pass boot information (i.e.,
system table, memory map, kernel command line, initrd) via a light FDT
and drop a lot of non-standard code.

We use a flat mapping to map the efi runtime in the kernel's address
space. In efi, VA = PA; in kernel, VA = PA + PAGE_OFFSET. As a result,
flat mapping is not identity mapping, SetVirtualAddressMap() is still
needed for the efi runtime.

Tested-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
[ardb: change fpic to fpie as suggested by Xi Ruoyao]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
 2022-09-06 11:19:34 +02:00
Huacai Chen fa96b57c14 LoongArch: Add build infrastructure 
Add Kbuild, Makefile, Kconfig and link script for LoongArch build
infrastructure.

Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2022-06-03 20:09:27 +08:00