6 files changed, 517 insertions, 33 deletions

diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 85856868507b..85935e6f69f3 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -154,6 +154,27 @@ static inline bool efi_is_native(void)
 
 extern struct console early_efi_console;
 extern void parse_efi_setup(u64 phys_addr, u32 data_len);
+
+#ifdef CONFIG_EFI_MIXED
+extern void efi_thunk_runtime_setup(void);
+extern efi_status_t efi_thunk_set_virtual_address_map(
+        void *phys_set_virtual_address_map,
+        unsigned long memory_map_size,
+        unsigned long descriptor_size,
+        u32 descriptor_version,
+        efi_memory_desc_t *virtual_map);
+#else
+static inline void efi_thunk_runtime_setup(void) {}
+static inline efi_status_t efi_thunk_set_virtual_address_map(
+        void *phys_set_virtual_address_map,
+        unsigned long memory_map_size,
+        unsigned long descriptor_size,
+        u32 descriptor_version,
+        efi_memory_desc_t *virtual_map)
+{
+        return EFI_SUCCESS;
+}
+#endif /* CONFIG_EFI_MIXED */
 #else
 /*
  * IF EFI is not configured, have the EFI calls return -ENOSYS.
diff --git a/arch/x86/platform/efi/Makefile b/arch/x86/platform/efi/Makefile
index b7b0b35c1981..d51045afcaaf 100644
--- a/arch/x86/platform/efi/Makefile
+++ b/arch/x86/platform/efi/Makefile
@@ -1,3 +1,4 @@
 obj-$(CONFIG_EFI)               += efi.o efi_$(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.c b/arch/x86/platform/efi/efi.c
index b96ae7918a16..39f5b7bba695 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -588,37 +588,85 @@ static int __init efi_systab_init(void *phys)
         return 0;
 }
 
-static int __init efi_runtime_init(void)
+static int __init efi_runtime_init32(void)
 {
-        efi_runtime_services_t *runtime;
+        efi_runtime_services_32_t *runtime;
+
+        runtime = early_ioremap((unsigned long)efi.systab->runtime,
+                        sizeof(efi_runtime_services_32_t));
+        if (!runtime) {
+                pr_err("Could not map the runtime service table!\n");
+                return -ENOMEM;
+        }
 
         /*
-         * Check out the runtime services table. We need to map
-         * the runtime services table so that we can grab the physical
-         * address of several of the EFI runtime functions, needed to
-         * set the firmware into virtual mode.
+         * We will only need *early* access to the following two
+         * EFI runtime services before set_virtual_address_map
+         * is invoked.
          */
+        efi_phys.get_time = (efi_get_time_t *)
+                        (unsigned long)runtime->get_time;
+        efi_phys.set_virtual_address_map =
+                        (efi_set_virtual_address_map_t *)
+                        (unsigned long)runtime->set_virtual_address_map;
+        /*
+         * Make efi_get_time can be called before entering
+         * virtual mode.
+         */
+        efi.get_time = phys_efi_get_time;
+        early_iounmap(runtime, sizeof(efi_runtime_services_32_t));
+
+        return 0;
+}
+
+static int __init efi_runtime_init64(void)
+{
+        efi_runtime_services_64_t *runtime;
+
         runtime = early_ioremap((unsigned long)efi.systab->runtime,
-                                sizeof(efi_runtime_services_t));
+                        sizeof(efi_runtime_services_64_t));
         if (!runtime) {
                 pr_err("Could not map the runtime service table!\n");
                 return -ENOMEM;
         }
+
         /*
-         * We will only need *early* access to the following
-         * two EFI runtime services before set_virtual_address_map
+         * We will only need *early* access to the following two
+         * EFI runtime services before set_virtual_address_map
          * is invoked.
          */
-        efi_phys.get_time = (efi_get_time_t *)runtime->get_time;
+        efi_phys.get_time = (efi_get_time_t *)
+                        (unsigned long)runtime->get_time;
         efi_phys.set_virtual_address_map =
-                (efi_set_virtual_address_map_t *)
-                runtime->set_virtual_address_map;
+                        (efi_set_virtual_address_map_t *)
+                        (unsigned long)runtime->set_virtual_address_map;
         /*
          * Make efi_get_time can be called before entering
          * virtual mode.
          */
         efi.get_time = phys_efi_get_time;
-        early_iounmap(runtime, sizeof(efi_runtime_services_t));
+        early_iounmap(runtime, sizeof(efi_runtime_services_64_t));
+
+        return 0;
+}
+
+static int __init efi_runtime_init(void)
+{
+        int rv;
+
+        /*
+         * Check out the runtime services table. We need to map
+         * the runtime services table so that we can grab the physical
+         * address of several of the EFI runtime functions, needed to
+         * set the firmware into virtual mode.
+         */
+        if (efi_enabled(EFI_64BIT))
+                rv = efi_runtime_init64();
+        else
+                rv = efi_runtime_init32();
+
+        if (rv)
+                return rv;
 
         return 0;
 }
@@ -841,6 +889,22 @@ void __init old_map_region(efi_memory_desc_t *md)
                        (unsigned long long)md->phys_addr);
 }
 
+static void native_runtime_setup(void)
+{
+        efi.get_time = virt_efi_get_time;
+        efi.set_time = virt_efi_set_time;
+        efi.get_wakeup_time = virt_efi_get_wakeup_time;
+        efi.set_wakeup_time = virt_efi_set_wakeup_time;
+        efi.get_variable = virt_efi_get_variable;
+        efi.get_next_variable = virt_efi_get_next_variable;
+        efi.set_variable = virt_efi_set_variable;
+        efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count;
+        efi.reset_system = virt_efi_reset_system;
+        efi.query_variable_info = virt_efi_query_variable_info;
+        efi.update_capsule = virt_efi_update_capsule;
+        efi.query_capsule_caps = virt_efi_query_capsule_caps;
+}
+
 /* Merge contiguous regions of the same type and attribute */
 static void __init efi_merge_regions(void)
 {
@@ -1023,11 +1087,20 @@ void __init efi_enter_virtual_mode(void)
         efi_sync_low_kernel_mappings();
 
         if (!efi_setup) {
-                status = phys_efi_set_virtual_address_map(
-                        memmap.desc_size * count,
-                        memmap.desc_size,
-                        memmap.desc_version,
-                        (efi_memory_desc_t *)__pa(new_memmap));
+                if (efi_is_native()) {
+                        status = phys_efi_set_virtual_address_map(
+                                        memmap.desc_size * count,
+                                        memmap.desc_size,
+                                        memmap.desc_version,
+                                        (efi_memory_desc_t *)__pa(new_memmap));
+                } else {
+                        status = efi_thunk_set_virtual_address_map(