From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Mon, 20 Feb 2012 10:01:22 +0000 Subject: Question on ARM Cortex R4 support in Linux In-Reply-To: <4F4217F7.6050908@st.com> References: <20120213105313.GD4994@arm.com> <20120213110730.GA7375@arm.com> <4F4217F7.6050908@st.com> Message-ID: <20120220100122.GB14018@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Feb 20, 2012 at 09:52:55AM +0000, Armando Visconti wrote: > >>>> Has anybody used it on Cortex R4 based platform ? > >>> > >>> In theory Linux support for R4 should just work (once CONFIG_MMU is > >>> disabled). I used to test it in the past regularly but not recently. > >> > >> Great. I was planning to use linux-3.2, I hope the support is there ? > > > > It's been there for years, but some bit-rotting may have occurred. > > I'm assuming you have tried it on a FPGA solution, is that correct? It may have been a real silicon (core tile for a RealView EB board), I don't remember the details. > We are planning to buy a Cortex-R4 board from ARM. > Lionel Belnet suggested to buy Versatile + a CoreTile with Cortex-R4F > r1p2 Test Chip on it. > > Is there any Linux/ucLinux support already offered for this solution? On www.arm.com/linux there is a uClinux tab with images for download, though the kernel is 2.6.35. Anyway, you can always get a newer kernel and just disable CONFIG_MMU for a RealView/EB board with ARMv6 processor. > Any other idea? I can't really tell what other R4 platforms are around. -- Catalin