Since ARM platforms do not have a common memory map, add a helper
function that finds the lowest address region with the EFI_MEMORY_WB
attribute set in the UEFI memory map.
Required for the arm64 efi linux loader to restrict the initrd
location to where it will be accessible by the kernel at runtime.
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
There are several implementations of this function in the tree.
Add a central version in grub-core/efi/mm.c.
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
When we exit grub, we don't free all the memory that we allocated earlier
for our heap region. This can cause problems with setups where you try
to descend the boot order using "exit" entries, such as PXE -> HD boot
scenarios.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
With upcoming changes to EDK2, allocations of type EFI_LOADER_DATA may
not return regions with execute ability. Since modules are loaded onto
the heap, change the heap allocation type to GRUB_EFI_LOADER_CODE in
order to permit execution on systems with this feature enabled.
Closes: 50420
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
grub_efi_allocate_pages Essentially does 2 unrelated things:
* Allocate at fixed address.
* Allocate at any address.
To switch between 2 different functions it uses address == 0 as magic
value which is wrong as 0 is a perfectly valid fixed adress to allocate at.
Expose a new function, grub_efi_allocate_pages_real(), making it possible
to specify allocation type and memory type as supported by the UEFI
AllocatePages boot service.
Make grub_efi_allocate_pages() a consumer of the new function,
maintaining its old functionality.
Also delete some left-around #if 1/#else blocks in the affected
functions.
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
* grub-core/Makefile.am (KERNEL_HEADER_FILES): Add pci.h on x86 EFI.
* grub-core/Makefile.core.def (kernel): Add pci.c on x86 EFI.
(pci): Don't build on x86 EFI.
* grub-core/bus/pci.c (grub_pci_find_capability): New function.
* grub-core/kern/efi/mm.c (stop_broadcom) [__i386__ || __x86_64__]:
New function.
(grub_efi_finish_boot_services) [__i386__ || __x86_64__]: Call
stop_broadcom if running on EFI.
* include/grub/pci.h (GRUB_PCI_CLASS_NETWORK): New enum value.
(GRUB_PCI_CAP_POWER_MANAGEMENT): Likewise.
(GRUB_PCI_VENDOR_BROADCOM): Likewise.
(grub_pci_find_capability): New proto.
Also-By: Vladimir Serbinenko <phcoder@gmail.com>
