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

3 files changed, 1 insertions, 86 deletions

diff --git a/arch/x86/platform/efi/Makefile b/arch/x86/platform/efi/Makefile
index 066619b0700c..f1d83b34c329 100644
--- a/arch/x86/platform/efi/Makefile
+++ b/arch/x86/platform/efi/Makefile
@@ -1,6 +1,5 @@
 OBJECT_FILES_NON_STANDARD_efi_thunk_$(BITS).o := y
 
 obj-$(CONFIG_EFI) 		+= quirks.o efi.o efi_$(BITS).o efi_stub_$(BITS).o
-obj-$(CONFIG_ACPI_BGRT) += efi-bgrt.o
 obj-$(CONFIG_EARLY_PRINTK_EFI)	+= early_printk.o
 obj-$(CONFIG_EFI_MIXED)		+= efi_thunk_$(BITS).o
diff --git a/arch/x86/platform/efi/efi-bgrt.c b/arch/x86/platform/efi/efi-bgrt.c
deleted file mode 100644
index 04ca8764f0c0..000000000000
--- a/arch/x86/platform/efi/efi-bgrt.c
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Copyright 2012 Intel Corporation
- * Author: Josh Triplett <josh@joshtriplett.org>
- *
- * Based on the bgrt driver:
- * Copyright 2012 Red Hat, Inc <mjg@redhat.com>
- * Author: Matthew Garrett
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/efi.h>
-#include <linux/efi-bgrt.h>
-
-struct acpi_table_bgrt bgrt_tab;
-size_t __initdata bgrt_image_size;
-
-struct bmp_header {
-	u16 id;
-	u32 size;
-} __packed;
-
-void __init efi_bgrt_init(struct acpi_table_header *table)
-{
-	void *image;
-	struct bmp_header bmp_header;
-	struct acpi_table_bgrt *bgrt = &bgrt_tab;
-
-	if (acpi_disabled)
-		return;
-
-	if (table->length < sizeof(bgrt_tab)) {
-		pr_notice("Ignoring BGRT: invalid length %u (expected %zu)\n",
-		       table->length, sizeof(bgrt_tab));
-		return;
-	}
-	*bgrt = *(struct acpi_table_bgrt *)table;
-	if (bgrt->version != 1) {
-		pr_notice("Ignoring BGRT: invalid version %u (expected 1)\n",
-		       bgrt->version);
-		goto out;
-	}
-	if (bgrt->status & 0xfe) {
-		pr_notice("Ignoring BGRT: reserved status bits are non-zero %u\n",
-		       bgrt->status);
-		goto out;
-	}
-	if (bgrt->image_type != 0) {
-		pr_notice("Ignoring BGRT: invalid image type %u (expected 0)\n",
-		       bgrt->image_type);
-		goto out;
-	}
-	if (!bgrt->image_address) {
-		pr_notice("Ignoring BGRT: null image address\n");
-		goto out;
-	}
-
-	image = early_memremap(bgrt->image_address, sizeof(bmp_header));
-	if (!image) {
-		pr_notice("Ignoring BGRT: failed to map image header memory\n");
-		goto out;
-	}
-
-	memcpy(&bmp_header, image, sizeof(bmp_header));
-	early_memunmap(image, sizeof(bmp_header));
-	if (bmp_header.id != 0x4d42) {
-		pr_notice("Ignoring BGRT: Incorrect BMP magic number 0x%x (expected 0x4d42)\n",
-			bmp_header.id);
-		goto out;
-	}
-	bgrt_image_size = bmp_header.size;
-	efi_mem_reserve(bgrt->image_address, bgrt_image_size);
-
-	return;
-out:
-	memset(bgrt, 0, sizeof(bgrt_tab));
-}
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
index a4695da42d77..6cbf9e036aa8 100644
--- a/arch/x86/platform/efi/efi_64.c
+++ b/arch/x86/platform/efi/efi_64.c
@@ -47,7 +47,7 @@
 #include <asm/pgalloc.h>
 
 /*
- * We allocate runtime services regions bottom-up, starting from -4G, i.e.
+ * We allocate runtime services regions top-down, starting from -4G, i.e.
  * 0xffff_ffff_0000_0000 and limit EFI VA mapping space to 64G.
  */
 static u64 efi_va = EFI_VA_START;