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[PATCH 0/4] linux: implement LoadFile2 initrd loading
From: |
Ard Biesheuvel |
Subject: |
[PATCH 0/4] linux: implement LoadFile2 initrd loading |
Date: |
Fri, 23 Oct 2020 14:08:21 +0200 |
This implements the LoadFile2 initrd loading protocol, which is
essentially a callback face into the bootloader to load the initrd
data into a caller provided buffer. This means the bootloader no
longer has to contain any policy regarding where to load the initrd
(which differs between architectures and kernel versions) and no
longer has to manipulate arch specific data structures such as DT
or struct bootparams to inform the OS where the initrd resides in
memory.
Sample output from booting a recent Linux/arm64 kernel:
grub> insmod part_msdos
grub> linux (hd0,msdos1)/Image
grub> initrd (hd0,msdos1)/initrd.img
grub> boot
EFI stub: Booting Linux Kernel...
EFI stub: EFI_RNG_PROTOCOL unavailable, KASLR will be disabled
EFI stub: Generating empty DTB
EFI stub: Loaded initrd from LINUX_EFI_INITRD_MEDIA_GUID device path
EFI stub: Exiting boot services and installing virtual address map...
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x411fd070]
Cc: grub-devel@gnu.org
Cc: daniel.kiper@oracle.com
Cc: leif@nuviainc.com
Ard Biesheuvel (4):
loader/linux: permit NULL argument for argv[] in grub_initrd_load()
efi: add definition of LoadFile2 protocol
efi: implemented LoadFile2 initr loading protocol for Linux
linux: ignore FDT unless we need to modify it
grub-core/commands/efi/lsefi.c | 1 +
grub-core/loader/arm64/linux.c | 139 ++++++++++++++++++--
grub-core/loader/efi/fdt.c | 7 +-
grub-core/loader/linux.c | 2 +-
include/grub/efi/api.h | 15 +++
5 files changed, 149 insertions(+), 15 deletions(-)
--
2.17.1
- [PATCH 0/4] linux: implement LoadFile2 initrd loading,
Ard Biesheuvel <=
- Re: [PATCH 0/4] linux: implement LoadFile2 initrd loading, Leif Lindholm, 2020/10/23
- [PATCH 1/4] loader/linux: permit NULL argument for argv[] in grub_initrd_load(), Ard Biesheuvel, 2020/10/23
- [PATCH 3/4] efi: implemented LoadFile2 initr loading protocol for Linux, Ard Biesheuvel, 2020/10/23
- [PATCH 2/4] efi: add definition of LoadFile2 protocol, Ard Biesheuvel, 2020/10/23
- [PATCH 4/4] linux: ignore FDT unless we need to modify it, Ard Biesheuvel, 2020/10/23