From mboxrd@z Thu Jan 1 00:00:00 1970 From: armando.visconti@st.com (Armando Visconti) Date: Mon, 20 Feb 2012 11:26:44 +0100 Subject: Question on ARM Cortex R4 support in Linux In-Reply-To: <20120220100122.GB14018@arm.com> References: <20120213105313.GD4994@arm.com> <20120213110730.GA7375@arm.com> <4F4217F7.6050908@st.com> <20120220100122.GB14018@arm.com> Message-ID: <4F421FE4.3030106@st.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Ciao Catalin, Thx for the answer. On 02/20/2012 11:01 AM, Catalin Marinas wrote: > 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. > OK, I see. >> 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. > So, you are suggesting that we can got for a RealView + CoreTile with Cortex-R4F testchip instead of versatile? Why ARMv6? Maybe you meant ARMv7? Thx, Arm -- -- "Every step appears to be the unavoidable consequence of the -- preceding one." (A. Einstein) -- Armando Visconti Mobile: (+39) 346 8879146 Senior SW Engineer Fax: (+39) 02 93519290 CPG Work: (+39) 02 93519683 Computer System Division e-mail: armando.visconti at st.com ST Microelectronics TINA: 051 4683