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[189.203.106.235]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7dc269402b9sm929859a34.20.2026.04.09.19.04.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2026 19:05:00 -0700 (PDT) Date: Thu, 9 Apr 2026 20:04:57 -0600 From: Tom Rini To: Marek Vasut Cc: "Kumar, Udit" , u-boot@lists.denx.de, Casey Connolly , Heinrich Schuchardt , Ilias Apalodimas , Jerome Forissier Subject: Re: [PATCH v2] arm: Add ARMv8-M aarch32 support Message-ID: <20260410020457.GS41863@bill-the-cat> References: <20260329231442.332359-1-marek.vasut+renesas@mailbox.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="1IrrSZDnp07q61WJ" Content-Disposition: inline In-Reply-To: X-Clacks-Overhead: GNU Terry Pratchett X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 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 0.103.8 at phobos.denx.de X-Virus-Status: Clean --1IrrSZDnp07q61WJ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Apr 10, 2026 at 03:24:10AM +0200, Marek Vasut wrote: > On 3/31/26 8:04 AM, Kumar, Udit wrote: > >=20 > >=20 > > On 3/30/2026 4:44 AM, Marek Vasut wrote: > > > Add configuration for ARMv8-M aarch32 core, which are currently > > > Cortex-M23/M33 cores. These cores are treated similar to ARMv7-M > > > cores, except the code has to be compiled with matching compiler > > > -march=3Darmv8-m.main flag . These cores have no MMU, they have MPU, > > > which is currently not configured. > > >=20 > > > Unlike ARMv7-M, these cores have 512 interrupt vectors. While the > > > SYS_ARM_ARCH should be set to 8, it is set to 7 because all of the > > > initialization code is built from from arch/arm/cpu/armv7m and not > > > armv8. Furthermore, CONFIG_ARM64 must be disabled, although DTs > > > for devices using these cores do come from arch/arm64/boot/dts . > > >=20 > > > To avoid excess duplication in Makefiles, introduce one new Kconfig > > > symbol, CPU_V7M_V8M. The CPU_V7M_V8M cover both ARMv7-M and ARMv8-M > > > cores. > > >=20 > > > Signed-off-by: Marek Vasut > > > --- > > > Cc: Casey Connolly > > > Cc: Heinrich Schuchardt > > > Cc: Ilias Apalodimas > > > Cc: Jerome Forissier > > > Cc: Tom Rini > > > Cc: Udit Kumar > > > Cc: u-boot@lists.denx.de > > > --- > > > V2: - Rename CPU_V78M to CPU_V7M_V8M > > > - Isolate V7M specific and otherwise option bits in cpu.c > >=20 > > Thanks for v2 Marek, > > Apart of name of config discussion over v1 [0]. > >=20 > > For changes, > > Acked-by: Udit Kumar > >=20 > > [0] : > > https://lore.kernel.org/all/30108d25-efd6-4ff6-9bfe-0dc55670a83f@mailbo= x.org/ > Tom, is the naming now OK ? I'm unable to come up with something I like better, so, yes, I will merge this soon, thanks! --=20 Tom --1IrrSZDnp07q61WJ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTzzqh0PWDgGS+bTHor4qD1Cr/kCgUCadhaxQAKCRAr4qD1Cr/k CufsAQDzw2Gx0r3IXsBjbyBN4unb6wf1r+OodahF41PLCjS+aAD/QHgNeX13II3u +rMoS+d2xysXSSn0LQ8IgmleZApIXQc= =eUqZ -----END PGP SIGNATURE----- --1IrrSZDnp07q61WJ--