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* doc: arm64: add description of EFI stub supportMark Salter2014-04-301-0/+4
| | | | | | | | | | | Add explanation of arm64 EFI stub and kernel image header changes needed to masquerade as a PE/COFF application. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Grant Likely <grant.likely@linaro.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
* arm64: Relax the kernel cache requirements for bootCatalin Marinas2014-04-051-2/+8
| | | | | | | | | | | | With system caches for the host OS or architected caches for guest OS we cannot easily guarantee that there are no dirty or stale cache lines for the areas of memory written by the kernel during boot with the MMU off (therefore non-cacheable accesses). This patch adds the necessary cache maintenance during boot and relaxes the booting requirements. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* Docs: arm64: booting: clarify boot requirementsMark Rutland2013-10-241-14/+31
| | | | | | | | | | | | | | | | | | There are a few points in the arm64 booting document which are unclear (such as the initial state of secondary CPUs), and/or have not been documented (PSCI is a supported mechanism for booting secondary CPUs). This patch amends the arm64 boot document to better express the (existing) requirements, and to describe PSCI as a supported booting mechanism. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Martin <dave.martin@arm.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Fu Wei <tekkamanninja@gmail.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* Documentation/arm64: clarify requirements for DTB placementMark Salter2013-09-051-3/+3
| | | | | | | | | | | The current description of DTB placement requirements does not quite match the kernel code in head.S: __vet_fdt and __create_page_tables. This patch tweaks the text to match the actual requirements placed on it by the code. Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: Expand arm64 image headerRoy Franz2013-08-221-3/+13
| | | | | | | | | | | | | | Expand the arm64 image header to allow for co-existance with PE/COFF header required by the EFI stub. The PE/COFF format requires the "MZ" header to be at offset 0, and the offset to the PE/COFF header to be at offset 0x3c. The image header is expanded to allow 2 instructions at the beginning to accommodate a benign intruction at offset 0 that includes the "MZ" header, a magic number, and the offset to the PE/COFF header. Signed-off-by: Roy Franz <roy.franz@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: Kernel booting and initialisationCatalin Marinas2012-09-171-0/+152
The patch adds the kernel booting and the initial setup code. Documentation/arm64/booting.txt describes the booting protocol on the AArch64 Linux kernel. This is subject to change following the work on boot standardisation, ACPI. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Arnd Bergmann <arnd@arndb.de>