Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git

# Conflicts:
#	arch/riscv/Kconfig

6 files changed, 22 insertions, 0 deletions

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index a092fc085ecd..66638fc9ba43 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -23,6 +23,7 @@ config RISCV
 	select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM_VMEMMAP
 	select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
 	select ARCH_SUPPORTS_PMD_SOFTLEAF if TRANSPARENT_HUGEPAGE
+	select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
 	select ARCH_HAS_BINFMT_FLAT
 	select ARCH_HAS_CC_CAN_LINK
 	select ARCH_HAS_CURRENT_STACK_POINTER
diff --git a/arch/riscv/include/asm/acpi.h b/arch/riscv/include/asm/acpi.h
index 26ab37c171bc..d59bd06347cc 100644
--- a/arch/riscv/include/asm/acpi.h
+++ b/arch/riscv/include/asm/acpi.h
@@ -92,4 +92,6 @@ void acpi_map_cpus_to_nodes(void);
 static inline void acpi_map_cpus_to_nodes(void) { }
 #endif /* CONFIG_ACPI_NUMA */
 
+#define ACPI_TABLE_UPGRADE_MAX_PHYS MEMBLOCK_ALLOC_ACCESSIBLE
+
 #endif /*_ASM_ACPI_H*/
diff --git a/arch/riscv/kernel/acpi.c b/arch/riscv/kernel/acpi.c
index 068e0b404b6f..efd52a5d05b5 100644
--- a/arch/riscv/kernel/acpi.c
+++ b/arch/riscv/kernel/acpi.c
@@ -353,3 +353,8 @@ int acpi_get_cpu_uid(unsigned int cpu, u32 *uid)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(acpi_get_cpu_uid);
+
+void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
+{
+	memblock_mark_nomap(addr, size);
+}
diff --git a/arch/riscv/kernel/efi.c b/arch/riscv/kernel/efi.c
index b64bf1624a05..2d3cc57b4535 100644
--- a/arch/riscv/kernel/efi.c
+++ b/arch/riscv/kernel/efi.c
@@ -95,3 +95,8 @@ int __init efi_set_mapping_permissions(struct mm_struct *mm,
 				   md->num_pages << EFI_PAGE_SHIFT,
 				   set_permissions, md);
 }
+
+bool efi_poweroff_required(void)
+{
+	return efi_enabled(EFI_RUNTIME_SERVICES);
+}
diff --git a/arch/riscv/kernel/reset.c b/arch/riscv/kernel/reset.c
index 912288572226..541e2162c85a 100644
--- a/arch/riscv/kernel/reset.c
+++ b/arch/riscv/kernel/reset.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2012 Regents of the University of California
  */
 
+#include <linux/efi.h>
 #include <linux/reboot.h>
 #include <linux/pm.h>
 
@@ -17,6 +18,12 @@ EXPORT_SYMBOL(pm_power_off);
 
 void machine_restart(char *cmd)
 {
+	/*
+	 * UpdateCapsule() depends on the system being reset via ResetSystem().
+	 */
+	if (efi_enabled(EFI_RUNTIME_SERVICES))
+		efi_reboot(reboot_mode, NULL);
+
 	do_kernel_restart(cmd);
 	while (1);
 }
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 52d1d2b8f338..a32344bb220d 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -321,6 +321,8 @@ void __init setup_arch(char **cmdline_p)
 	efi_init();
 	paging_init();
 
+	acpi_table_upgrade();
+
 	/* Parse the ACPI tables for possible boot-time configuration */
 	acpi_boot_table_init();