| Date | Fri, 17 Aug 2012 02:38:22 -0700 | From | Tony Lindgren <> | Subject | Re: [PATCH v2 04/31] arm64: MMU definitions |
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* Catalin Marinas <catalin.marinas@arm.com> [120817 02:21]: > On Fri, Aug 17, 2012 at 10:04:52AM +0100, Tony Lindgren wrote: > > * Catalin Marinas <catalin.marinas@arm.com> [120814 10:57]: > > > The virtual memory layout is described in > > > Documentation/arm64/memory.txt. This patch adds the MMU definitions for > > > the 4KB and 64KB translation table configurations. The SECTION_SIZE is > > > 2MB with 4KB page and 512MB with 64KB page configuration. > > > > > > PHYS_OFFSET is calculated at run-time and stored in a variable (no > > > run-time code patching at this stage). > > > > Care to clarify this part a bit? Is the memory standardized somehow > > now and not needed? Or do we still need to add that for various SoCs > > later on? > > The memory is not standardised but we have FDT to fully specify it. The > PHYS_OFFSET does not need to be defined, it is automatically detected at > boo-time based on the kernel load address and stored in a variable to be > used later.
OK nice thanks.
Tony
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