From mboxrd@z Thu Jan 1 00:00:00 1970 From: AKASHI Takahiro Subject: [PATCH v26 7/7] Documentation: dt: chosen properties for arm64 kdump Date: Wed, 7 Sep 2016 13:32:03 +0900 Message-ID: <20160907043203.6309-1-takahiro.akashi@linaro.org> References: <20160907042908.6232-1-takahiro.akashi@linaro.org> Return-path: In-Reply-To: <20160907042908.6232-1-takahiro.akashi-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: catalin.marinas-5wv7dgnIgG8@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, frowand.list-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Cc: james.morse-5wv7dgnIgG8@public.gmane.org, geoff-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, bauerman-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org, dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, AKASHI Takahiro List-Id: devicetree@vger.kernel.org From: James Morse Add documentation for linux,crashkernel-base and crashkernel-size, linux,elfcorehdr used by arm64 kexec/kdump to decribe the kdump reserved area, and the elfcorehdr's location within it. Signed-off-by: James Morse [takahiro.akashi-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org: added "linux,crashkernel-base" and "-size" ] Signed-off-by: AKASHI Takahiro --- Documentation/devicetree/bindings/chosen.txt | 30 ++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt index 6ae9d82..6257ee7 100644 --- a/Documentation/devicetree/bindings/chosen.txt +++ b/Documentation/devicetree/bindings/chosen.txt @@ -52,3 +52,33 @@ This property is set (currently only on PowerPC, and only needed on book3e) by some versions of kexec-tools to tell the new kernel that it is being booted by kexec, as the booting environment may differ (e.g. a different secondary CPU release mechanism) + +linux,crashkernel-base +linux,crashkernel-size +---------------------- + +These properties (currently used on PowerPC and arm64) indicates +the base address and the size, respectively, of the reserved memory +range for crash dump kernel. +e.g. + +/ { + chosen { + linux,crashkernel-base = <0x9 0xf0000000>; + linux,crashkernel-size = <0x0 0x10000000>; + }; +}; + +linux,elfcorehdr +---------------- + +This property (currently used only on arm64) holds the memory range, +the address and the size, of the elf core header which mainly describes +the panicked kernel's memory layout as PT_LOAD segments of elf format. +e.g. + +/ { + chosen { + linux,elfcorehdr = <0x9 0xfffff000 0x0 0x800>; + }; +}; -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html