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[2603:6081:7b01:cbda:143e:7f00:f95f:8895]) by smtp.gmail.com with ESMTPSA id v194sm4360721qkb.94.2021.06.18.10.17.48 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 18 Jun 2021 10:17:48 -0700 (PDT) Date: Fri, 18 Jun 2021 13:17:46 -0400 From: Tom Rini To: raghu.ncstate@icloud.com Cc: =?iso-8859-1?Q?'Fran=E7ois?= Ozog' , 'Simon Glass' , 'Ed Stuber' , 'Boot Architecture Mailman List' , 'Harb Abdulhamid OS' , 'U-Boot Mailing List' , 'Arjun Khare' , 'Paul Isaac's' , 'Ron Minnich' , 'Moe Ammar' Subject: Re: [TF-A] Proposal: TF-A to adopt hand-off blocks (HOBs) for information passing between boot stages Message-ID: <20210618171746.GV9516@bill-the-cat> References: <0100017974aff4fb-0af45782-0b60-4724-b300-822f8fe4b799-000000@email.amazonses.com> <0100017982591630-15bf1d32-8f0b-4b2a-bb4d-a2ba39760820-000000@email.amazonses.com> <10CCF05B-96E6-4C92-942F-1B4C774A813E@arm.com> <0100017a1b8bea04-71a338d9-55ac-4163-80c9-2c350d62d425-000000@email.amazonses.com> <08d801d763d2$e6c52240$b44f66c0$@icloud.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="85zYTqyks938QIiw" Content-Disposition: inline In-Reply-To: <08d801d763d2$e6c52240$b44f66c0$@icloud.com> X-Clacks-Overhead: GNU Terry Pratchett User-Agent: Mutt/1.9.4 (2018-02-28) X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean --85zYTqyks938QIiw Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jun 17, 2021 at 04:45:48PM -0700, raghu.ncstate@icloud.com wrote: [snip] > I also think it is incorrect to partition platforms into what u-boot/linu= x boot/embdedded systems do and what =E2=80=9CUEFI/private code=E2=80=9D do= es. UEFI is a huge part of the ARM eco-system and is being used fairly exte= nsively and supported across different markets and is not private code. I don't think "u-boot/linux boot/embedded systems" vs "UEFI/private code" is the right distinction. It's "device tree/related" vs "ACPI/related" as the difference between U-Boot (for example) and EDK II (for another example) on aarch64 booting a system via EFI is that U-Boot is likely to be passing in a device tree (setting aside what we can do on x86 as a digression) and EDK II being likely to pass ACPI/related. In both cases we can quite easily be talking about all of the data having been written to persistent flash and automatically passed along. To riff on a phrase, U-Boot can be quite boring too. --=20 Tom --85zYTqyks938QIiw Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEGjx/cOCPqxcHgJu/FHw5/5Y0tywFAmDM1TIACgkQFHw5/5Y0 tyyCLQv7B7QD3zf/5faJcOh38DzhuUQpD7QwnqdZ9gsN92t0tlHXUY28CBsx8U7x vBzpe10GMSaeIaHtPPvWGtWh875p62XAON312lj+cUwvZSiKe9jxWP+6KQ/ZTjD5 LVUpSpLW5OeQJCJ1ZfLq6kyTkWhgKCVZBeiyOiOS/xBVWH0yVHEUvnBsxIP9h6no D4RLVK7arw2f7QitAeEvibRjfV/pXFelDyKEWMZOgpjEf6uhI2OSyQ7eAg+ZvRxR /j63sGwyILVTQg0l5rglGZe7pUm17iq2oJcS9h5IUYtmp2mzLNo92+X6Stki0gD5 pNaXWlLmeaDFxWXmn9/JyK4fJAKy3YYc/90+RLevnSrgoexYYbWDshgvDDDzNmzz qMlxaVEQi29vn2lfy3Xp4AmMa5WMqfy9W5IIFDUlrEDyFVuSsAySSCWT365GmcHi REYs2cRgD8RB7MU6ME07z+4YbhmYF/OY/QDpEdTRUHWGGAiwp5D+77yskAbmbhe5 ldpXaNSH =X01Y -----END PGP SIGNATURE----- --85zYTqyks938QIiw--