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ead384d956
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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
..
alpha Bitmap patches for v6.0-rc1 2022-08-07 17:52:35 -07:00
arc Kbuild updates for v5.20 2022-08-10 10:40:41 -07:00
arm Merge 'irq/loongarch', 'pci/ctrl/loongson' and 'pci/header-cleanup-immutable' 2022-08-11 21:06:14 +08:00
arm64 Including fixes from bluetooth, bpf, can and netfilter. 2022-08-11 13:45:37 -07:00
csky Merge 'irq/loongarch', 'pci/ctrl/loongson' and 'pci/header-cleanup-immutable' 2022-08-11 21:06:14 +08:00
hexagon Bitmap patches for v6.0-rc1 2022-08-07 17:52:35 -07:00
ia64 Bitmap patches for v6.0-rc1 2022-08-07 17:52:35 -07:00
loongarch efi/loongarch: Add efistub booting support 2022-09-06 11:19:34 +02:00
m68k Fixes include: 2022-08-09 09:39:25 -07:00
microblaze - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
mips Merge 'irq/loongarch', 'pci/ctrl/loongson' and 'pci/header-cleanup-immutable' 2022-08-11 21:06:14 +08:00
nios2 nios2: drop definition of PGD_ORDER 2022-07-17 17:14:43 -07:00
openrisc Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
parisc Merge 'irq/loongarch', 'pci/ctrl/loongson' and 'pci/header-cleanup-immutable' 2022-08-11 21:06:14 +08:00
powerpc powerpc fixes for 6.0 #2 2022-08-14 08:48:13 -07:00
riscv RISC-V Patches for the 5.20 Merge Window, Part 2 2022-08-12 18:39:43 -07:00
s390 Merge 'irq/loongarch', 'pci/ctrl/loongson' and 'pci/header-cleanup-immutable' 2022-08-11 21:06:14 +08:00
sh Merge 'irq/loongarch', 'pci/ctrl/loongson' and 'pci/header-cleanup-immutable' 2022-08-11 21:06:14 +08:00
sparc Merge 'irq/loongarch', 'pci/ctrl/loongson' and 'pci/header-cleanup-immutable' 2022-08-11 21:06:14 +08:00
um virtio: fatures, fixes 2022-08-12 09:50:34 -07:00
x86 xen: branch for v6.0-rc1b 2022-08-14 09:28:54 -07:00
xtensa Merge 'irq/loongarch', 'pci/ctrl/loongson' and 'pci/header-cleanup-immutable' 2022-08-11 21:06:14 +08:00
.gitignore
Kconfig asm-generic: updates for 6.0 2022-08-05 10:07:23 -07:00