From: geoff@infradead.org (Geoff Levand) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v19 13/13] Documentation: dt: usable-memory and elfcorehdr nodes for arm64 kexec Date: Thu, 16 Jun 2016 23:48:28 +0000 [thread overview] Message-ID: <eedcb4f4fde3530a1a6745bf18a716330e077eba.1466120418.git.geoff@infradead.org> (raw) In-Reply-To: <cover.1466120418.git.geoff@infradead.org> From: James Morse <james.morse@arm.com> Add documentation for linux,usable-memory and linux,elfcorehdr chosen nodes used by arm64 kexec to decribe the kdump reserved area, and the elfcorehdr's location within it. Signed-off-by: James Morse <james.morse@arm.com> --- Documentation/devicetree/bindings/chosen.txt | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt index 6ae9d82..443f88b 100644 --- a/Documentation/devicetree/bindings/chosen.txt +++ b/Documentation/devicetree/bindings/chosen.txt @@ -52,3 +52,31 @@ 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,usable-memory +------------------- + +This property is set on PowerPC and arm64 by kexec-tools during kdump +to tell the crash kernel the base address of its reserved area of memory, and +the size. e.g. + +/ { + chosen { + linux,usable-memory = <0x9 0xf0000000 0x0 0x10000000>; + }; +}; + +linux,elfcorehdr +---------------- + +This property is set (currently only on arm64) by kexec-tools during kdump +to tell the crash kernel the address and size of the elfcorehdr that describes +the old kernel's memory as an elf file. This memory must reside within the area +described by 'linux,usable-memory'. e.g. + +/ { + chosen { + linux,usable-memory = <0x9 0xf0000000 0x0 0x10000000>; + linux,elfcorehdr = <0x9 0xfffff000 0x0 0x800>; + }; +}; -- 2.5.0
WARNING: multiple messages have this Message-ID (diff)
From: Geoff Levand <geoff@infradead.org> To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com> Cc: Mark Rutland <mark.rutland@arm.com>, marc.zyngier@arm.com, kexec@lists.infradead.org, AKASHI Takahiro <takahiro.akashi@linaro.org>, James Morse <james.morse@arm.com>, linux-arm-kernel@lists.infradead.org Subject: [PATCH v19 13/13] Documentation: dt: usable-memory and elfcorehdr nodes for arm64 kexec Date: Thu, 16 Jun 2016 23:48:28 +0000 [thread overview] Message-ID: <eedcb4f4fde3530a1a6745bf18a716330e077eba.1466120418.git.geoff@infradead.org> (raw) In-Reply-To: <cover.1466120418.git.geoff@infradead.org> From: James Morse <james.morse@arm.com> Add documentation for linux,usable-memory and linux,elfcorehdr chosen nodes used by arm64 kexec to decribe the kdump reserved area, and the elfcorehdr's location within it. Signed-off-by: James Morse <james.morse@arm.com> --- Documentation/devicetree/bindings/chosen.txt | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt index 6ae9d82..443f88b 100644 --- a/Documentation/devicetree/bindings/chosen.txt +++ b/Documentation/devicetree/bindings/chosen.txt @@ -52,3 +52,31 @@ 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,usable-memory +------------------- + +This property is set on PowerPC and arm64 by kexec-tools during kdump +to tell the crash kernel the base address of its reserved area of memory, and +the size. e.g. + +/ { + chosen { + linux,usable-memory = <0x9 0xf0000000 0x0 0x10000000>; + }; +}; + +linux,elfcorehdr +---------------- + +This property is set (currently only on arm64) by kexec-tools during kdump +to tell the crash kernel the address and size of the elfcorehdr that describes +the old kernel's memory as an elf file. This memory must reside within the area +described by 'linux,usable-memory'. e.g. + +/ { + chosen { + linux,usable-memory = <0x9 0xf0000000 0x0 0x10000000>; + linux,elfcorehdr = <0x9 0xfffff000 0x0 0x800>; + }; +}; -- 2.5.0 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec
next prev parent reply other threads:[~2016-06-16 23:48 UTC|newest] Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-06-16 23:48 [PATCH v19 00/13] arm64 kexec kernel patches Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-16 23:48 ` [PATCH v19 05/13] arm64/kexec: Add pr_debug output Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-20 16:06 ` James Morse 2016-06-20 16:06 ` James Morse 2016-06-20 16:50 ` Geoff Levand 2016-06-20 16:50 ` Geoff Levand 2016-06-16 23:48 ` [PATCH v19 02/13] arm64: Add back cpu reset routines Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-16 23:48 ` [PATCH v19 04/13] arm64/kexec: Enable kexec in the arm64 defconfig Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-16 23:48 ` [PATCH v19 01/13] arm64: Add cpus_are_stuck_in_kernel Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-16 23:48 ` [PATCH v19 03/13] arm64/kexec: Add core kexec support Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-20 15:36 ` James Morse 2016-06-20 15:36 ` James Morse 2016-06-20 16:49 ` Geoff Levand 2016-06-20 16:49 ` Geoff Levand 2016-06-16 23:48 ` [PATCH v19 11/13] arm64: kdump: enable kdump in the arm64 defconfig Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-16 23:48 ` Geoff Levand [this message] 2016-06-16 23:48 ` [PATCH v19 13/13] Documentation: dt: usable-memory and elfcorehdr nodes for arm64 kexec Geoff Levand 2016-06-16 23:48 ` [PATCH v19 12/13] arm64: kdump: update a kernel doc Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-16 23:48 ` [PATCH v19 10/13] arm64: kdump: add VMCOREINFO's for user-space coredump tools Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-20 5:32 ` Pratyush Anand 2016-06-20 5:32 ` Pratyush Anand 2016-06-22 5:59 ` AKASHI Takahiro 2016-06-22 5:59 ` AKASHI Takahiro 2016-06-23 7:14 ` Pratyush Anand 2016-06-23 7:14 ` Pratyush Anand 2016-06-23 8:42 ` AKASHI Takahiro 2016-06-23 8:42 ` AKASHI Takahiro 2016-06-23 15:46 ` Pratyush Anand 2016-06-23 15:46 ` Pratyush Anand 2016-06-30 0:44 ` AKASHI Takahiro 2016-06-30 0:44 ` AKASHI Takahiro 2016-06-16 23:48 ` [PATCH v19 07/13] arm64: limit memory regions based on DT property, usable-memory Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-16 23:48 ` [PATCH v19 08/13] arm64: kdump: implement machine_crash_shutdown() Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-16 23:48 ` [PATCH v19 06/13] arm64: kdump: reserve memory for crash dump kernel Geoff Levand 2016-06-16 23:48 ` Geoff Levand 2016-06-20 16:07 ` James Morse 2016-06-20 16:07 ` James Morse 2016-06-21 1:23 ` AKASHI Takahiro 2016-06-21 1:23 ` AKASHI Takahiro 2016-06-16 23:48 ` [PATCH v19 09/13] arm64: kdump: add kdump support Geoff Levand 2016-06-16 23:48 ` Geoff Levand
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=eedcb4f4fde3530a1a6745bf18a716330e077eba.1466120418.git.geoff@infradead.org \ --to=geoff@infradead.org \ --cc=linux-arm-kernel@lists.infradead.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.