brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-09-27 23:20:26 +09:00
Code Issues Projects Releases Wiki Activity

efi_loader: carving out memory reservations

Browse Source 
The "Devicetree Specification 0.2" does not prescribe that memory
reservations must be EFI page aligned. So let's not make such an
assumption in our code.

Do not carve out the pages for the device tree. This memory area is
already marked as EFI_RUNTIME_SERVICES_DATA.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2018-11-12 18:55:23 +01:00 committed by Alexander Graf
parent 4574d1b3d1
commit 23fd84b3ec
1 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
cmd/bootefi.c
View File

@ -275,7 +275,16 @@ static void efi_carve_out_dt_rsv(void *fdt)
if (fdt_get_mem_rsv(fdt, i, &addr, &size) != 0)
continue;
pages = ALIGN(size, EFI_PAGE_SIZE) >> EFI_PAGE_SHIFT;
/*
* Do not carve out the device tree. It is already marked as
* EFI_RUNTIME_SERVICES_DATA
*/
if (addr == (uintptr_t)fdt)
continue;
pages = ALIGN(size + (addr & EFI_PAGE_MASK), EFI_PAGE_SIZE) >>
EFI_PAGE_SHIFT;
addr &= ~EFI_PAGE_MASK;
if (!efi_add_memory_map(addr, pages, EFI_RESERVED_MEMORY_TYPE,
false))
printf("FDT memrsv map %d: Failed to add to map\n", i);