Linaro-acpi February 2014

linaro-acpi@lists.linaro.org

13 participants
22 discussions

leg-kernel tag leg-20140206.0 released

by Graeme Gregory

The leg-kernel release has been made and tagged as leg-20140206.0 This is based on mainline kernel v3.14-rc1 Repository : http://git.linaro.org/arm/acpi/leg-kernel.git Direct Link: http://git.linaro.org/arm/acpi/leg-kernel.git/commit/2089f78f14cf361b8cb9d7… Notes :- 1) starting from this release, a FDT is not used to describe the platform. The kernel uses ACPI tables only. Given that current ACPI 5.0 tables have limitations in the MADT fields with regards to CPU topology for ARM platforms, currently this means that booting with ACPI will boot with only one processor running. This will remain until ACPI booting from PSCI prototype is completed. As hinted last month with the introduction of a dummy patch[1], the team is focusing on this and plans to present a prototype solution at LCA-14. Booting in FDT mode is unaffected. [1] http://www.spinics.net/lists/linux-acpi/msg48537.html

10 years, 2 months

[PATCH] arm64: if we chose to boot from acpi then disable FDT

by Graeme Gregory

If the early boot methods of acpi are happy that we have valid ACPI tables and acpi=off has not been passed. Then do not unflatted devicetree effectively disabling further hardware probing from DT. Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- arch/arm64/kernel/setup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 09f34ca..eac789d 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -242,7 +242,8 @@ void __init setup_arch(char **cmdline_p) paging_init(); request_standard_resources(); - unflatten_device_tree(); + if (acpi_disabled) + unflatten_device_tree(); psci_init(); -- 1.8.5.3

10 years, 2 months

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Linaro-acpi February 2014