Merge tag 'efi-next-for-v5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull more EFI updates from Ard Biesheuvel:
"Follow-up tweaks for EFI changes - they mostly address issues
introduced this merge window, except for Heinrich's patch:

- fix new DXE service invocations for mixed mode

- use correct Kconfig symbol when setting PE header flag

- clean up the drivers/firmware/efi Kconfig dependencies so that
features that depend on CONFIG_EFI are hidden from the UI when the
symbol is not enabled.

Also included is a RISC-V bugfix from Heinrich to avoid read-write
mappings of read-only firmware regions in the EFI page tables"

* tag 'efi-next-for-v5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi: clean up Kconfig dependencies on CONFIG_EFI
efi/x86: libstub: Make DXE calls mixed mode safe
efi: x86: Fix config name for setting the NX-compatibility flag in the PE header
riscv: read-only pages should not be writable

arch/riscv/kernel/efi.c

···
 
 	if (md->attribute & EFI_MEMORY_RO) {
 		val = pte_val(pte) & ~_PAGE_WRITE;
-		val = pte_val(pte) | _PAGE_READ;
+		val |= _PAGE_READ;
 		pte = __pte(val);
 	}
 	if (md->attribute & EFI_MEMORY_XP) {

arch/x86/boot/header.S

···
 	.long	0x200				# SizeOfHeaders
 	.long	0				# CheckSum
 	.word	IMAGE_SUBSYSTEM_EFI_APPLICATION	# Subsystem (EFI application)
-#ifdef CONFIG_DXE_MEM_ATTRIBUTES
+#ifdef CONFIG_EFI_DXE_MEM_ATTRIBUTES
 	.word	IMAGE_DLL_CHARACTERISTICS_NX_COMPAT	# DllCharacteristics
 #else
 	.word	0				# DllCharacteristics

arch/x86/include/asm/efi.h

···
 	return (u32)(status | (u64)status >> 32);
 }
 
+#define __efi64_split(val)		(val) & U32_MAX, (u64)(val) >> 32
+
 #define __efi64_argmap_free_pages(addr, size)				\
 	((addr), 0, (size))
 
···
 /* TCG2 protocol */
 #define __efi64_argmap_hash_log_extend_event(prot, fl, addr, size, ev)	\
 	((prot), (fl), 0ULL, (u64)(addr), 0ULL, (u64)(size), 0ULL, ev)
+
+/* DXE services */
+#define __efi64_argmap_get_memory_space_descriptor(phys, desc) \
+	(__efi64_split(phys), (desc))
+
+#define __efi64_argmap_set_memory_space_descriptor(phys, size, flags) \
+	(__efi64_split(phys), __efi64_split(size), __efi64_split(flags))
 
 /*
  * The macros below handle the plumbing for the argument mapping. To add a

drivers/firmware/Makefile

···
 obj-y				+= cirrus/
 obj-y				+= meson/
 obj-$(CONFIG_GOOGLE_FIRMWARE)	+= google/
-obj-$(CONFIG_EFI)		+= efi/
-obj-$(CONFIG_UEFI_CPER)		+= efi/
+obj-y				+= efi/
 obj-y				+= imx/
 obj-y				+= psci/
 obj-y				+= smccc/

drivers/firmware/efi/Kconfig

···
 	  Say Y here to enable the runtime services support via /dev/efi_test.
 	  If unsure, say N.
 
+config EFI_DEV_PATH_PARSER
+	bool
+
 config APPLE_PROPERTIES
 	bool "Apple Device Properties"
 	depends on EFI_STUB && X86
···
 	  options "efi=disable_early_pci_dma" or "efi=no_disable_early_pci_dma"
 	  may be used to override this option.
 
-endmenu
-
-config EFI_EMBEDDED_FIRMWARE
-	bool
-	depends on EFI
-	select CRYPTO_LIB_SHA256
-
-config UEFI_CPER
-	bool
-
-config UEFI_CPER_ARM
-	bool
-	depends on UEFI_CPER && ( ARM || ARM64 )
-	default y
-
-config UEFI_CPER_X86
-	bool
-	depends on UEFI_CPER && X86
-	default y
-
-config EFI_DEV_PATH_PARSER
-	bool
-	depends on ACPI
-	default n
-
 config EFI_EARLYCON
 	def_bool y
-	depends on EFI && SERIAL_EARLYCON && !ARM && !IA64
+	depends on SERIAL_EARLYCON && !ARM && !IA64
 	select FONT_SUPPORT
 	select ARCH_USE_MEMREMAP_PROT
 
 config EFI_CUSTOM_SSDT_OVERLAYS
 	bool "Load custom ACPI SSDT overlay from an EFI variable"
-	depends on EFI && ACPI
+	depends on ACPI
 	default ACPI_TABLE_UPGRADE
 	help
 	  Allow loading of an ACPI SSDT overlay from an EFI variable specified
···
 
 config EFI_COCO_SECRET
 	bool "EFI Confidential Computing Secret Area Support"
-	depends on EFI
 	help
 	  Confidential Computing platforms (such as AMD SEV) allow the
 	  Guest Owner to securely inject secrets during guest VM launch.
···
 	  for usage inside the kernel.  This will allow the
 	  virt/coco/efi_secret module to access the secrets, which in turn
 	  allows userspace programs to access the injected secrets.
+
+config EFI_EMBEDDED_FIRMWARE
+	bool
+	select CRYPTO_LIB_SHA256
+
+endmenu
+
+config UEFI_CPER
+	bool
+
+config UEFI_CPER_ARM
+	bool
+	depends on UEFI_CPER && ( ARM || ARM64 )
+	default y
+
+config UEFI_CPER_X86
+	bool
+	depends on UEFI_CPER && X86
+	default y

drivers/firmware/efi/libstub/x86-stub.c

···
 				      EFI_MEMORY_WB);
 
 		if (status != EFI_SUCCESS) {
-			efi_warn("Unable to unprotect memory range [%08lx,%08lx]: %d\n",
+			efi_warn("Unable to unprotect memory range [%08lx,%08lx]: %lx\n",
 				 unprotect_start,
 				 unprotect_start + unprotect_size,
-				 (int)status);
+				 status);
 		}
 	}
 }