[PATCH v6 0/9] Add EFI HTTP boot support

[Masahisa Kojima]

On Mon, 16 Oct 2023 at 08:50, Masahisa Kojima
<masahisa.kojima at linaro.org> wrote:
>
> This series adds the EFI HTTP boot support.
> User can add the URI device path with "efidebug boot add" command.
> efibootmgr handles the URI device path, download the
> specified file using wget, mount the downloaded image with
> blkmap, then boot with the default file(e.g. EFI/BOOT/BOOTAA64.EFI)
> by selecting automatically created boot option when the new disk is
> detected.
>
> This version still does not include the test.
>
> To enable EFI HTTP boot, we need to enable the following Kconfig options.
>  CONFIG_CMD_DNS
>  CONFIG_CMD_WGET
>  CONFIG_BLKMAP
>  CONFIG_EFI_HTTP_BOOT
>
> On the Socionext Developerbox, enter the following commands then
> debian installer is downloaded into "loadaddr" and installer
> automatically starts.
>  => dhcp
>  => setenv serverip 192.168.1.1
>  => efidebug boot add -u 3 debian-netinst http://ftp.riken.jp/Linux/debian/debian-cd/12.1.0/arm64/iso-cd/debian-12.1.0-arm64-netinst.iso
>  => efidebug boot order 3
>  => bootefi bootmgr
>
> Note that this debian installer can not proceed the installation
> bacause RAM disk of installer image is not recogniged by the kernel.
> I'm still investigating this issue, but drivers/nvdimm/of_pmem.c in linux
> will be one of the solution to recognize RAM disk from kernel.
> (In EDK2, the equivalent solution is called ACPI NFIT.)
>
> On QEMU, I can not make DNS work from the QEMU guest.
> The following commands work on qemu_arm64(manually set the http server ip in URI).
>   => dhcp
>   => setenv gatewayip 10.0.2.2
>   => setenv httpserverip 134.160.38.1
>   => efidebug boot add -u 3 debian-netinst http://134.160.38.1/Linux/debian/debian-cd/12.1.0/arm64/iso-cd/debian-12.1.0-arm64-netinst.iso
>   => efidebug boot order 3
>   => bootefi bootmgr
>
> [TODO]
> - add test
> - stricter wget uri check
> - omit the dns process if the given uri has ip address
>    -> this will be supported when the lwip migration completes
> - uri device path support in eficonfig
>
> [change log]
> v5 -> v6
> - add patch #4 "Boot var automatic management for removable medias"
> - boot from automatically created boot option
>   rather than searching default file on the fly
> - introduce new CONFIG_EFI_HTTP_BOOT Kconfig option
> - comment in one place
> - use log_err() rather than printf()
> - use env_get_hex("filesize", 0) instead of return value of net_loop()
> - use more suitable error code
> - blkmap can be build for SPL/TPL
> - add CDROM short-form device path support

Sorry but I forgot to include the necessary changes.
I will resend this series soon.

Thanks,
Masahisa Kojima


>
> v4 -> v5
> - add missing else statement
> - add NULL check of efi_dp_find_obj() call
> - update document to remove "limitation"
>
> v3 -> v4
> - patch#8 is added to simplify the bootmgr default boot process
> - add function comments
>
> v2 -> v3
> - Patch#6 is added, reserve the whole ramdisk memory region
> - remove .efi file extension check for PE-COFF image
> - use "if IS_ENABLED(..)" as much as possible
> - 1024 should be sizeof(net_boot_file_name)
> - call net_set_state(NETLOOP_FAIL) when wget encounters error
> - describe DNS ip address host name limitation in document
>
> v1 -> v2
> - carve out the network handling(wget and dns code) under net/wget.c
> - carve out ramdisk creation code under drivers/block/blkmap_helper.c
> - wget supports the valid range check to store the received blocks using lmb
> - support when the downloaded image have no partiton table but a file system
> - not start the .efi file in try_load_entry()
> - call efi_check_pe() for .efi file to check the file is PE-COFF image
> - add documentation for EFI HTTP Boot
>
> Masahisa Kojima (8):
>   net: wget: prevent overwriting reserved memory
>   net: wget: add wget with dns utility function
>   blk: blkmap: add ramdisk creation utility function
>   efi_loader: create default file boot option
>   efi_loader: support boot from URI device path
>   efi_loader: add CDROM short-form device path
>   cmd: efidebug: add uri device path
>   doc: uefi: add HTTP Boot support
>
> Raymond Mao (1):
>   Boot var automatic management for removable medias
>
>  cmd/efidebug.c                                |  50 ++++
>  doc/develop/uefi/uefi.rst                     |  30 ++
>  drivers/block/Makefile                        |   3 +-
>  drivers/block/blkmap.c                        |  15 -
>  drivers/block/blkmap_helper.c                 |  53 ++++
>  include/blkmap.h                              |  29 ++
>  include/efi_loader.h                          |   2 +
>  include/net.h                                 |  17 ++
>  lib/efi_loader/Kconfig                        |   9 +
>  lib/efi_loader/efi_bootmgr.c                  | 282 ++++++++++++++++--
>  lib/efi_loader/efi_device_path.c              |   3 +-
>  lib/efi_loader/efi_disk.c                     |  18 ++
>  lib/efi_loader/efi_dt_fixup.c                 |   2 +-
>  lib/efi_loader/efi_setup.c                    |   7 +
>  net/wget.c                                    | 205 ++++++++++++-
>  test/py/tests/test_efi_secboot/test_signed.py |  42 +--
>  .../test_efi_secboot/test_signed_intca.py     |  14 +-
>  .../tests/test_efi_secboot/test_unsigned.py   |  14 +-
>  .../test_fs/test_squashfs/test_sqfs_ls.py     |   6 +
>  19 files changed, 718 insertions(+), 83 deletions(-)
>  create mode 100644 drivers/block/blkmap_helper.c
>
>
> base-commit: c1ab04626d6b05c6e82dfe4d97d3f62f7310d612
> prerequisite-patch-id: 386e2563ffafe7f80fda169076d2835ea071b3f9
> --
> 2.34.1
>