The UEFI spec already covers the requirements on the runtime memory map. No need to have a whole section on it here.
Signed-off-by: Grant Likely <grant.lik...@arm.com> --- source/chapter2-uefi.rst | 23 ----------------------- 1 file changed, 23 deletions(-) diff --git a/source/chapter2-uefi.rst b/source/chapter2-uefi.rst index 7fd8aa6..6f7d260 100644 --- a/source/chapter2-uefi.rst +++ b/source/chapter2-uefi.rst @@ -125,29 +125,6 @@ EL1 or EL2, with appropriate virtual address mappings. When called, subsequent runtime service calls must be from the same Exception level. -Runtime Memory Map ------------------- - -Before calling ExitBootServices(), the final call to GetMemoryMap() returns a -description of the entire UEFI memory map, that includes the persistent Runtime -Services mappings. - -After the call to ExitBootServices(), the Runtime Services page mappings can be -relocated in virtual address space by calling SetVirtualAddressMap(). -This call allows the Runtime Services to assign virtual addresses that are -compatible with the incoming Operating System memory map. - -A UEFI runtime environment compliant with this specification must not be -written with any assumption of an identity mapping between virtual and physical -memory maps. - -UEFI operates with a 4K page size. With Runtime Services, these pages are -mapped into the Operating System address space. - -To allow Operating Systems to use 64K page mappings, UEFI 2.7, constrains all -mapped 4K memory pages to have identical page attributes, within the same -physical 64K page. - Runtime Device Mappings ----------------------- -- 2.13.0 _______________________________________________ boot-architecture mailing list boot-architecture@lists.linaro.org https://lists.linaro.org/mailman/listinfo/boot-architecture
