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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-01 18:20:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-01 18:20:03 -0700
commit3711c94fd6593318146348c940d81040acf9e877 (patch)
tree46119e721e66184e4e73c3e59307047677dfc7cc /arch/arm
parent174ddfd5dfbfc2d91a45332f809977050ac3fdc5 (diff)
parent197decefdb79d6f1350ba0316ce26ba737372d0c (diff)
Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Ingo Molnar: "The main changes in this cycle were: - move BGRT handling to drivers/acpi so it can be shared between x86 and ARM - bring the EFI stub's initrd and FDT allocation logic in line with the latest changes to the arm64 boot protocol - improvements and fixes to the EFI stub's command line parsing routines - randomize the virtual mapping of the UEFI runtime services on ARM/arm64 - ... and other misc enhancements, cleanups and fixes" * 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/libstub/arm: Don't use TASK_SIZE when randomizing the RT space ef/libstub/arm/arm64: Randomize the base of the UEFI rt services region efi/libstub/arm/arm64: Disable debug prints on 'quiet' cmdline arg efi/libstub: Unify command line param parsing efi/libstub: Fix harmless command line parsing bug efi/arm32-stub: Allow boot-time allocations in the vmlinux region x86/efi: Clean up a minor mistake in comment efi/pstore: Return error code (if any) from efi_pstore_write() efi/bgrt: Enable ACPI BGRT handling on arm64 x86/efi/bgrt: Move efi-bgrt handling out of arch/x86 efi/arm-stub: Round up FDT allocation to mapping size efi/arm-stub: Correct FDT and initrd allocation rules for arm64
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/include/asm/efi.h14
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/arm/include/asm/efi.h b/arch/arm/include/asm/efi.h
index e4e6a9d6a825..17f1f1a814ff 100644
--- a/arch/arm/include/asm/efi.h
+++ b/arch/arm/include/asm/efi.h
@@ -85,6 +85,18 @@ static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
*/
#define ZIMAGE_OFFSET_LIMIT SZ_128M
#define MIN_ZIMAGE_OFFSET MAX_UNCOMP_KERNEL_SIZE
-#define MAX_FDT_OFFSET ZIMAGE_OFFSET_LIMIT
+
+/* on ARM, the FDT should be located in the first 128 MB of RAM */
+static inline unsigned long efi_get_max_fdt_addr(unsigned long dram_base)
+{
+ return dram_base + ZIMAGE_OFFSET_LIMIT;
+}
+
+/* on ARM, the initrd should be loaded in a lowmem region */
+static inline unsigned long efi_get_max_initrd_addr(unsigned long dram_base,
+ unsigned long image_addr)
+{
+ return dram_base + SZ_512M;
+}
#endif /* _ASM_ARM_EFI_H */