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Open Source and information security mailing list archives
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Date: Tue, 16 Sep 2014 17:24:16 -0400 From: Christopher Covington <cov@...eaurora.org> To: Christopher Covington <cov@...eaurora.org> CC: Sonny Rao <sonnyrao@...omium.org>, Will Deacon <will.deacon@....com>, Catalin Marinas <Catalin.Marinas@....com>, Mark Rutland <Mark.Rutland@....com>, Stephen Boyd <sboyd@...eaurora.org>, Marc Zyngier <marc.zyngier@....com>, linux-arm-kernel@...ts.infradead.org, Doug Anderson <dianders@...omium.org>, linux-kernel@...r.kernel.org Subject: Re: [RFC] arm: Handle starting up in secure mode On 09/16/2014 05:09 PM, Christopher Covington wrote: > ARM Linux currently has the most features available to it in hypervisor > (HYP) mode, so switch to it when possible. This can also ensure proper > reset of newer registers such as CNTVOFF. > > The permissions on the Non-Secure Access Control Register (NSACR) are > used to probe what the security setting currently is when in supervisor > (SVC) mode. Sorry, this doesn't work yet. I was misinterpreting my test results. For what it's worth, my testing and development methodology is to run it after hacked up versions of the semihosting bootwrapper on the simulator that corresponds to rtsm_ve-aemv8a.dtb (AEM VE FVP these days?) and examine the instruction traces. Christopher -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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