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 EFI changes in this cycle are much larger than usual, for two
  (positive) reasons:

   - The GRUB project is showing signs of life again, resulting in the
     introduction of the generic Linux/UEFI boot protocol, instead of
     x86 specific hacks which are increasingly difficult to maintain.
     There's hope that all future extensions will now go through that
     boot protocol.

   - Preparatory work for RISC-V EFI support.

  The main changes are:

   - Boot time GDT handling changes

   - Simplify handling of EFI properties table on arm64

   - Generic EFI stub cleanups, to improve command line handling, file
     I/O, memory allocation, etc.

   - Introduce a generic initrd loading method based on calling back
     into the firmware, instead of relying on the x86 EFI handover
     protocol or device tree.

   - Introduce a mixed mode boot method that does not rely on the x86
     EFI handover protocol either, and could potentially be adopted by
     other architectures (if another one ever surfaces where one
     execution mode is a superset of another)

   - Clean up the contents of 'struct efi', and move out everything that
     doesn't need to be stored there.

   - Incorporate support for UEFI spec v2.8A changes that permit
     firmware implementations to return EFI_UNSUPPORTED from UEFI
     runtime services at OS runtime, and expose a mask of which ones are
     supported or unsupported via a configuration table.

   - Partial fix for the lack of by-VA cache maintenance in the
     decompressor on 32-bit ARM.

   - Changes to load device firmware from EFI boot service memory
     regions

   - Various documentation updates and minor code cleanups and fixes"

* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (114 commits)
  efi/libstub/arm: Fix spurious message that an initrd was loaded
  efi/libstub/arm64: Avoid image_base value from efi_loaded_image
  partitions/efi: Fix partition name parsing in GUID partition entry
  efi/x86: Fix cast of image argument
  efi/libstub/x86: Use ULONG_MAX as upper bound for all allocations
  efi: Fix a mistype in comments mentioning efivar_entry_iter_begin()
  efi/libstub: Avoid linking libstub/lib-ksyms.o into vmlinux
  efi/x86: Preserve %ebx correctly in efi_set_virtual_address_map()
  efi/x86: Ignore the memory attributes table on i386
  efi/x86: Don't relocate the kernel unless necessary
  efi/x86: Remove extra headroom for setup block
  efi/x86: Add kernel preferred address to PE header
  efi/x86: Decompress at start of PE image load address
  x86/boot/compressed/32: Save the output address instead of recalculating it
  efi/libstub/x86: Deal with exit() boot service returning
  x86/boot: Use unsigned comparison for addresses
  efi/x86: Avoid using code32_start
  efi/x86: Make efi32_pe_entry() more readable
  efi/x86: Respect 32-bit ABI in efi32_pe_entry()
  efi/x86: Annotate the LOADED_IMAGE_PROTOCOL_GUID with SYM_DATA
  ...

5 files changed, 8 insertions, 11 deletions

diff --git a/arch/x86/kernel/asm-offsets.c b/arch/x86/kernel/asm-offsets.c
index 5c7ee3df4d0b..3ca07ad552ae 100644
--- a/arch/x86/kernel/asm-offsets.c
+++ b/arch/x86/kernel/asm-offsets.c
@@ -88,7 +88,6 @@ static void __used common(void)
 	OFFSET(BP_kernel_alignment, boot_params, hdr.kernel_alignment);
 	OFFSET(BP_init_size, boot_params, hdr.init_size);
 	OFFSET(BP_pref_address, boot_params, hdr.pref_address);
-	OFFSET(BP_code32_start, boot_params, hdr.code32_start);
 
 	BLANK();
 	DEFINE(PTREGS_SIZE, sizeof(struct pt_regs));
diff --git a/arch/x86/kernel/asm-offsets_32.c b/arch/x86/kernel/asm-offsets_32.c
index 82826f2275cc..2b4256ebe86e 100644
--- a/arch/x86/kernel/asm-offsets_32.c
+++ b/arch/x86/kernel/asm-offsets_32.c
@@ -3,6 +3,8 @@
 # error "Please do not build this file directly, build asm-offsets.c instead"
 #endif
 
+#include <linux/efi.h>
+
 #include <asm/ucontext.h>
 
 #define __SYSCALL_I386(nr, sym, qual) [nr] = 1,
@@ -64,4 +66,7 @@ void foo(void)
 	BLANK();
 	DEFINE(__NR_syscall_max, sizeof(syscalls) - 1);
 	DEFINE(NR_syscalls, sizeof(syscalls));
+
+	BLANK();
+	DEFINE(EFI_svam, offsetof(efi_runtime_services_t, set_virtual_address_map));
 }
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index 3923ab4630d7..f66a6b90f954 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -67,11 +67,6 @@ __HEAD
 SYM_CODE_START(startup_32)
 	movl pa(initial_stack),%ecx
 	
-	/* test KEEP_SEGMENTS flag to see if the bootloader is asking
-		us to not reload segments */
-	testb $KEEP_SEGMENTS, BP_loadflags(%esi)
-	jnz 2f
-
 /*
  * Set segments to known values.
  */
@@ -82,7 +77,6 @@ SYM_CODE_START(startup_32)
 	movl %eax,%fs
 	movl %eax,%gs
 	movl %eax,%ss
-2:
 	leal -__PAGE_OFFSET(%ecx),%esp
 
 /*
diff --git a/arch/x86/kernel/ima_arch.c b/arch/x86/kernel/ima_arch.c
index 23054909c8dd..7dfb1e808928 100644
--- a/arch/x86/kernel/ima_arch.c
+++ b/arch/x86/kernel/ima_arch.c
@@ -17,7 +17,7 @@ static enum efi_secureboot_mode get_sb_mode(void)
 
 	size = sizeof(secboot);
 
-	if (!efi_enabled(EFI_RUNTIME_SERVICES)) {
+	if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) {
 		pr_info("ima: secureboot mode unknown, no efi\n");
 		return efi_secureboot_mode_unknown;
 	}
diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c
index f293d872602a..db6578d45157 100644
--- a/arch/x86/kernel/kexec-bzimage64.c
+++ b/arch/x86/kernel/kexec-bzimage64.c
@@ -141,9 +141,8 @@ prepare_add_efi_setup_data(struct boot_params *params,
 	struct setup_data *sd = (void *)params + efi_setup_data_offset;
 	struct efi_setup_data *esd = (void *)sd + sizeof(struct setup_data);
 
-	esd->fw_vendor = efi.fw_vendor;
-	esd->runtime = efi.runtime;
-	esd->tables = efi.config_table;
+	esd->fw_vendor = efi_fw_vendor;
+	esd->tables = efi_config_table;
 	esd->smbios = efi.smbios;
 
 	sd->type = SETUP_EFI;