[{"id":3682350,"web_url":"http://patchwork.ozlabs.org/comment/3682350/","msgid":"","list_archive_url":null,"date":"2026-04-24T22:18:58","subject":"Re: [PATCH 00/12] arm64: FF-A runtime transport for EFI variables","submitter":{"id":61270,"url":"http://patchwork.ozlabs.org/api/people/61270/","name":"Heinrich Schuchardt","email":"xypron.glpk@gmx.de"},"content":"Am 24. April 2026 19:31:39 MESZ schrieb Harsimran Singh Tungal :\n>Hi all,\n>\n>This series adds FF-A runtime transport support so EFI variable runtime\n>services can communicate with the secure world after ExitBootServices().\n>It also extends tests, docs, and board configs to validate the runtime\n>path and keep boot‑time behavior aligned with the runtime flow.\n\nHello Harsiman,\n\nCould you, please, explain the motivation for the series.\n\nWhat is the overall architecture?\n\nPlease, describe how to set up a system on QEMU to test your development including the instructions for the secure world.\n\nWe would need a test in the CI using QEMU.\n\nBest regards\n\nHeinrich\n\n\n>\n>Changes in this series:\n>- Add EFI runtime-safe memset helper and FF-A runtime transport support.\n>- Implement FF-A runtime communication in the EFI variable TEE backend.\n>- Enable runtime variable operations and move helpers to avoid conflicts.\n>- Add sandbox runtime transport tests and metadata reuse.\n>- Extend EFI selftests for runtime variables and bootefi selftest config.\n>- Document the FF-A runtime transport and selftest behavior.\n>- Align boot‑time cache maintenance with the runtime path.\n>\n>Harsimran Singh Tungal (12):\n> efi_loader: add runtime memset helper\n> arm-ffa: add FF-A bus runtime support\n> efi_loader: add FF-A runtime support in EFI variable TEE driver\n> efi_loader: enable EFI runtime SetVariable()/GetVariable() using FF-A\n> transport\n> efi_loader: move runtime GetVariable() helpers to efi_variable.c\n> corstone1000: enable bootefi selftest\n> efi: selftest: add runtime variable tests with non-volatile storage\n> test: dm: add sandbox FF-A runtime transport tests\n> sandbox: ffa: share synthetic partition metadata via macros\n> doc: arm64: document FF-A runtime path for EFI variables\n> doc: bootefi: note two-phase runtime variables selftest\n> efi_loader: align FF-A cache maintenance with runtime path\n>\n> arch/sandbox/include/asm/sandbox_arm_ffa.h | 16 +-\n> configs/corstone1000_defconfig | 3 +\n> doc/arch/arm64.ffa.rst | 92 ++-\n> doc/usage/cmd/armffa.rst | 11 +\n> doc/usage/cmd/bootefi.rst | 12 +\n> drivers/firmware/arm-ffa/Kconfig | 11 +\n> drivers/firmware/arm-ffa/Makefile | 4 +-\n> drivers/firmware/arm-ffa/arm-ffa-runtime.c | 287 ++++++++\n> drivers/firmware/arm-ffa/arm-ffa-uclass.c | 111 +--\n> drivers/firmware/arm-ffa/arm-ffa.c | 16 +-\n> drivers/firmware/arm-ffa/ffa-emul-uclass.c | 48 +-\n> include/arm_ffa.h | 16 +-\n> include/arm_ffa_priv.h | 24 +-\n> include/arm_ffa_runtime.h | 183 +++++\n> include/efi_loader.h | 3 +\n> lib/charset.c | 2 +-\n> lib/efi_loader/efi_runtime.c | 21 +\n> lib/efi_loader/efi_var_common.c | 24 -\n> lib/efi_loader/efi_variable.c | 24 +\n> lib/efi_loader/efi_variable_tee.c | 686 +++++++++++++++++-\n> .../efi_selftest_variables_runtime.c | 106 ++-\n> test/dm/Makefile | 3 +-\n> test/dm/ffa.c | 6 +-\n> test/dm/ffa_runtime.c | 82 +++\n> 24 files changed, 1602 insertions(+), 189 deletions(-)\n> create mode 100644 drivers/firmware/arm-ffa/arm-ffa-runtime.c\n> create mode 100644 include/arm_ffa_runtime.h\n> create mode 100644 test/dm/ffa_runtime.c\n>","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=gmx.de header.i=xypron.glpk@gmx.de header.a=rsa-sha256\n header.s=s31663417 header.b=H7tfD9yr;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de;\n envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org)","phobos.denx.de;\n dmarc=pass (p=quarantine dis=none) header.from=gmx.de","phobos.denx.de;\n spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de","phobos.denx.de;\n\tdkim=pass (2048-bit key;\n secure) header.d=gmx.de header.i=xypron.glpk@gmx.de 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b=H7tfD9yrkFZR5/u1zN6NCMH5sfqLA1G7gx8dIk9RbOXqplwKrxtXBBhAe9OVBK4M\n SItsMJTJ6OXUt0RRJTzSn8I/Vi8/u/i6x4dCMU6Bt2wG2ADisVTjQjVKwGI7GU3jt\n wafird9hUkwn8uUaJQASeu7tkiVduDipnz9+JfMN0nApDjQuoNVy5Z3qRqXolw18A\n SY10s63o1VoUPJDVVjtYKgMISeQYCUOmOWPe5wBMNSQmoAnYfPOJw5/yqJSrnW0zk\n Ys1RCunXarwByFbshwDMd53/Ygcbp8GQwEMyiiyU6mr/3AELg/6nDiQOuCidlASVh\n eK0DlznzjEHmugRWBA==","X-UI-Sender-Class":"724b4f7f-cbec-4199-ad4e-598c01a50d3a","Date":"Sat, 25 Apr 2026 00:18:58 +0200","From":"Heinrich Schuchardt ","To":"Harsimran Singh Tungal ,\n u-boot@lists.denx.de","CC":"Abdellatif El Khlifi ,\n Tom Rini ,\n Ilias Apalodimas ,\n Hugues Kamba Mpiana ,\n Simon Glass ","Subject":"Re: [PATCH 00/12] arm64: FF-A runtime transport for EFI variables","User-Agent":"Thunderbird for Android","In-Reply-To":"<20260424173151.371134-1-harsimransingh.tungal@arm.com>","References":"<20260424173151.371134-1-harsimransingh.tungal@arm.com>","Message-ID":"","MIME-Version":"1.0","Content-Type":"text/plain;\n 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