|
| From: | Leif Lindholm |
| Subject: | [PATCH v2 00/14] efi: improved correctness, arm unification, and cleanup |
| Date: | Thu, 3 Aug 2017 11:04:18 +0100 |
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 unification
- 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 to GRUB_EFI_LOADER_CODE instead.
Changes between v1 and v2:
- Move EFI_PAGE_SHIFT/EFI_BYTES_TO_PAGES first in the series, as
separate patch.
- Add GRUB_EFI_PAGE_SIZE definition.
- Break out find_efi_mmap_size function from existing code to common
code for reuse.
- Move current users to this version.
- Rename grub_efi_get_dram_base -> grub_efi_get_ram_base.
- Break up commits to better separate logical changes.
- Moved initrd location restrictions description, and the resulting
macros, to the body of the function that uses them.
Changes between RFC and v1:
- Rebased (to deal with arm coreboot upstream changes).
- Moved EFI page size definitions to common header.
- Moved a few stray 32/64-bit fixes from 3/7 to 4/7.
Leif Lindholm (14):
arm64/efi: move EFI_PAGE definitions to efi/memory.h
efi: add central copy of grub_efi_find_mmap_size
loader: drop local implementations of find_efi_mmap_size
efi: add grub_efi_get_ram_base() function for arm*
efi: refactor grub_efi_allocate_pages
efi: move fdt helper library
efi: Add GRUB_PE32_MAGIC definition
arm64 linux loader: improve type portability
arm64 linux loader: rename functions and macros and move to common
headers
loader: switch arm/linux to grub_linux_kernel_header struct
arm/efi: switch to arm64 linux loader
arm: delete unused efi support from loader/arm
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 | 130 ++++++++++++++++++----
grub-core/loader/arm/linux.c | 39 +------
grub-core/loader/arm64/linux.c | 73 ++++++++----
grub-core/loader/arm64/xen_boot.c | 15 +--
grub-core/loader/{arm64 => efi}/fdt.c | 11 +-
grub-core/loader/i386/linux.c | 51 +--------
grub-core/loader/multiboot_mbi2.c | 38 +------
include/grub/arm/efi/loader.h | 26 -----
include/grub/arm/linux.h | 31 ++----
include/grub/arm64/linux.h | 13 +--
include/grub/efi/efi.h | 11 ++
include/grub/{arm64 => efi}/fdtload.h | 3 -
include/grub/efi/memory.h | 4 +
include/grub/efi/pe32.h | 2 +
17 files changed, 216 insertions(+), 440 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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