I will review your patches later. There might be some overlap with my "arm"
branch. Can you have a look whether it diverges a lot?
On Tue, Feb 28, 2017, 14:48 Leif Lindholm <leif.lindh...@linaro.org> wrote:
> This patch series is really three different ones, but they unite around
> the need for (and the implementation) of more flexible control of memory
> allocation on UEFI systems.
>
> 1: Adding new interfaces
> - A function for detecting the start address of RAM
> Since ARM platforms have no standardised memory map, implement a
> function that picks the lowest-address region supporting the
> write-back cache atribute from the UEFI memory map.
> - Implement and expose a new memory allocation function giving access to
> the allocation type and memory type arguments to the AllocatePages
> boot service.
>
> 2: ARM unificatios
> - The fdt helper library for arm64/efi is really an efi/fdt function.
> So move it to neutral ground in loader/efi.
> - The arm64 efi linux loader was written for arm64 only, so clean it up a
> bit with regards to 32/64-bit portability, and abstract out some
> definitions and function prototypes.
> - Move the arm efi port to use the arm64 linux loader instead of the one
> shared with the u-boot port. Clean up the u-boot loder by deleting the
> efi-specific bits and other code only used by that.
>
> 3: Correctness improvements
> - There are some restrictions on the placement of initrd images in
> relation to the runtime kernel images, for both arm and arm64 - but the
> arm64 one did not use to be explicitly documented (and only triggerable
> on systems with > 40GB of RAM), and the u-boot loader always placed the
> images nearly adjacent. Use the new interfaces to place the initrd as
> approrpiate for each architecture.
> - The allocation of memory for the grub heap is done of memory type
> GRUB_EFI_LOADER_DATA. Since UEFI can return memory with non-executable
> mappings for this request, and modules are loaded onto the heap, change
> this allocation GRUB_EFI_LOADER_CODE instead.
>
> Leif Lindholm (7):
> efi: add grub_efi_get_dram_base() function for arm*
> efi: refactor grub_efi_allocate_pages
> efi: move fdt helper library
> arm64: make efi linux loader more generic
> arm: reuse arm64 linux loader on efi systems
> efi: restrict arm/arm64 linux loader initrd placement
> efi: change heap allocation type to GRUB_EFI_LOADER_CODE
>
> grub-core/Makefile.am | 1 -
> grub-core/Makefile.core.def | 6 +-
> grub-core/kern/arm/efi/misc.c | 202
> ----------------------------------
> grub-core/kern/efi/mm.c | 92 ++++++++++++----
> grub-core/loader/arm/linux.c | 48 +-------
> grub-core/loader/arm64/linux.c | 73 ++++++++----
> grub-core/loader/arm64/xen_boot.c | 15 +--
> grub-core/loader/{arm64 => efi}/fdt.c | 11 +-
> include/grub/arm/efi/loader.h | 26 -----
> include/grub/arm/efi/memory.h | 3 +
> include/grub/arm/linux.h | 30 ++---
> include/grub/arm64/efi/memory.h | 3 +
> include/grub/arm64/linux.h | 13 +--
> include/grub/efi/efi.h | 10 ++
> include/grub/{arm64 => efi}/fdtload.h | 3 -
> include/grub/efi/pe32.h | 2 +
> 16 files changed, 176 insertions(+), 362 deletions(-)
> delete mode 100644 grub-core/kern/arm/efi/misc.c
> rename grub-core/loader/{arm64 => efi}/fdt.c (93%)
> delete mode 100644 include/grub/arm/efi/loader.h
> rename include/grub/{arm64 => efi}/fdtload.h (89%)
>
> --
> 2.11.0
>
>
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