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2022-07-02dt-bindings: chosen: remove old .txt bindingJason A. Donenfeld1-137/+0
chosen.txt has been replaced by a schema in dtschema[1] and is now out of date as well. Remove it to avoid confusion. [1] https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/chosen.yaml Link: https://lore.kernel.org/lkml/c8dddfe6-6385-ed34-e789-9f845c8a32bd@linaro.org/ Link: https://lore.kernel.org/lkml/CAL_Jsq+uSdk9YNbUW35yjN3q8-3FDobrxHmBpy=4RKmCfnB0KQ@mail.gmail.com/ Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> [robh: Improve commmit msg] Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220628153354.870543-1-Jason@zx2c4.com
2021-08-25of: fdt: Add generic support for handling usable memory range propertyGeert Uytterhoeven1-3/+3
Add support for handling the "linux,usable-memory-range" property in the "/chosen" node to the FDT core code. This can co-exist safely with the architecture-specific handling, until the latter has been removed. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/3bd69bada93ee59b7d23c38b3527fc1654e19343.1628670468.git.geert+renesas@glider.be
2021-08-25of: fdt: Add generic support for handling elf core headers propertyGeert Uytterhoeven1-3/+3
There are two methods to specify the location of the elf core headers: using the "elfcorehdr=" kernel parameter, as handled by generic code in kernel/crash_dump.c, or using the "linux,elfcorehdr" property under the "/chosen" node in the Device Tree, as handled by architecture-specific code in arch/arm64/mm/init.c. Extend support for "linux,elfcorehdr" to all platforms supporting DT by adding platform-agnostic handling for handling this property to the FDT core code. This can co-exist safely with the architecture-specific handling, until the latter has been removed. This requires moving the call to of_scan_flat_dt() up, as the code scanning the "/chosen" node now needs to be aware of the values of "#address-cells" and "#size-cells". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/c7e46e50aaf87ef49bdaa61358d25b122f32b7df.1628670468.git.geert+renesas@glider.be
2017-12-15dt-bindings: chosen: Document linux,initrd-{start,end}Jonathan Neuschäfer1-0/+15
These properties have been in use for a very long time (at least since 2005), but were never documented in chosen.txt. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Rob Herring <robh@kernel.org>
2017-07-24dt-bindings: chosen: document kaslr-seed propertyKees Cook1-2/+24
Document the /chosen/kaslr-seed property (and its interaction with the EFI_RNG_PROTOCOL API). Thanks to Ard for clarifications. Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Rob Herring <robh@kernel.org>
2017-06-22of: update ePAPR references to point to Devicetree SpecificationFrank Rowand1-1/+2
The Devicetree Specification has superseded the ePAPR as the base specification for bindings. Update files in Documentation to reference the new document. First reference to ePAPR in Documentation/devicetree/bindings/arm/cci.txt is generic, remove it. Some files are not updated because there is no hypervisor chapter in the Devicetree Specification: Documentation/devicetree/bindings/powerpc/fsl/msi-pic.txt Documenation/virtual/kvm/api.txt Documenation/virtual/kvm/ppc-pv.txt Signed-off-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Rob Herring <robh@kernel.org>
2017-04-05Documentation: dt: chosen properties for arm64 kdumpJames Morse1-0/+45
Add documentation for DT properties: linux,usable-memory-range linux,elfcorehdr used by arm64 kdump. Those are, respectively, a usable memory range allocated to crash dump kernel and the elfcorehdr's location within it. Signed-off-by: James Morse <james.morse@arm.com> [takahiro.akashi@linaro.org: update the text due to recent changes ] Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: Rob Herring <robh+dt@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-28powerpc/book3e-64/kexec: Enable SMP releaseScott Wood1-0/+8
The SMP release mechanism for FSL book3e is different from when booting with normal hardware. In theory we could simulate the normal spin table mechanism, but not at the addresses U-Boot put in the device tree -- so there'd need to be even more communication between the kernel and kexec to set that up. Instead, kexec-tools will set a boolean property linux,booted-from-kexec in the /chosen node. Signed-off-by: Scott Wood <scottwood@freescale.com> Cc: devicetree@vger.kernel.org
2014-12-04of: Add bindings for chosen node, stdout-pathLeif Lindholm1-0/+46
Add a global binding for the chosen node. Include a description of the stdout-path, and an explicit statement on its extra options in the context of a UART console. Opening description stolen from www.devicetree.org, and part of the remaining text provided by Mark Rutland. Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> [grant.likely: remove reference to uart_parse_options] Reviewed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>