summaryrefslogtreecommitdiff
path: root/drivers/firmware
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/efi/libstub/Makefile2
-rw-r--r--drivers/firmware/efi/libstub/x86-stub.c2
-rw-r--r--drivers/firmware/efi/riscv-runtime.c15
-rw-r--r--drivers/firmware/efi/runtime-wrappers.c358
4 files changed, 249 insertions, 128 deletions
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index ae8874401a9f..92389a5481ff 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -147,7 +147,7 @@ STUBCOPY_RELOC-$(CONFIG_ARM64) := R_AARCH64_ABS
# For RISC-V, we don't need anything special other than arm64. Keep all the
# symbols in .init section and make sure that no absolute symbols references
-# doesn't exist.
+# exist.
STUBCOPY_FLAGS-$(CONFIG_RISCV) += --prefix-alloc-sections=.init \
--prefix-symbols=__efistub_
STUBCOPY_RELOC-$(CONFIG_RISCV) := R_RISCV_HI20
diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c
index e976288728e9..2fee52ed335d 100644
--- a/drivers/firmware/efi/libstub/x86-stub.c
+++ b/drivers/firmware/efi/libstub/x86-stub.c
@@ -72,7 +72,7 @@ preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
rom->data.type = SETUP_PCI;
rom->data.len = size - sizeof(struct setup_data);
rom->data.next = 0;
- rom->pcilen = pci->romsize;
+ rom->pcilen = romsize;
*__rom = rom;
status = efi_call_proto(pci, pci.read, EfiPciIoWidthUint16,
diff --git a/drivers/firmware/efi/riscv-runtime.c b/drivers/firmware/efi/riscv-runtime.c
index d0daacd2c903..09525fb5c240 100644
--- a/drivers/firmware/efi/riscv-runtime.c
+++ b/drivers/firmware/efi/riscv-runtime.c
@@ -130,14 +130,25 @@ static int __init riscv_enable_runtime_services(void)
}
early_initcall(riscv_enable_runtime_services);
-void efi_virtmap_load(void)
+static void efi_virtmap_load(void)
{
preempt_disable();
switch_mm(current->active_mm, &efi_mm, NULL);
}
-void efi_virtmap_unload(void)
+static void efi_virtmap_unload(void)
{
switch_mm(&efi_mm, current->active_mm, NULL);
preempt_enable();
}
+
+void arch_efi_call_virt_setup(void)
+{
+ sync_kernel_mappings(efi_mm.pgd);
+ efi_virtmap_load();
+}
+
+void arch_efi_call_virt_teardown(void)
+{
+ efi_virtmap_unload();
+}
diff --git a/drivers/firmware/efi/runtime-wrappers.c b/drivers/firmware/efi/runtime-wrappers.c
index a400c4312c82..5d56bc40a79d 100644
--- a/drivers/firmware/efi/runtime-wrappers.c
+++ b/drivers/firmware/efi/runtime-wrappers.c
@@ -40,55 +40,97 @@
* code doesn't get too cluttered:
*/
#define efi_call_virt(f, args...) \
- efi_call_virt_pointer(efi.runtime, f, args)
-#define __efi_call_virt(f, args...) \
- __efi_call_virt_pointer(efi.runtime, f, args)
+ arch_efi_call_virt(efi.runtime, f, args)
+
+union efi_rts_args {
+ struct {
+ efi_time_t *time;
+ efi_time_cap_t *capabilities;
+ } GET_TIME;
+
+ struct {
+ efi_time_t *time;
+ } SET_TIME;
+
+ struct {
+ efi_bool_t *enabled;
+ efi_bool_t *pending;
+ efi_time_t *time;
+ } GET_WAKEUP_TIME;
+
+ struct {
+ efi_bool_t enable;
+ efi_time_t *time;
+ } SET_WAKEUP_TIME;
+
+ struct {
+ efi_char16_t *name;
+ efi_guid_t *vendor;
+ u32 *attr;
+ unsigned long *data_size;
+ void *data;
+ } GET_VARIABLE;
+
+ struct {
+ unsigned long *name_size;
+ efi_char16_t *name;
+ efi_guid_t *vendor;
+ } GET_NEXT_VARIABLE;
+
+ struct {
+ efi_char16_t *name;
+ efi_guid_t *vendor;
+ u32 attr;
+ unsigned long data_size;
+ void *data;
+ } SET_VARIABLE;
+
+ struct {
+ u32 attr;
+ u64 *storage_space;
+ u64 *remaining_space;
+ u64 *max_variable_size;
+ } QUERY_VARIABLE_INFO;
+
+ struct {
+ u32 *high_count;
+ } GET_NEXT_HIGH_MONO_COUNT;
+
+ struct {
+ efi_capsule_header_t **capsules;
+ unsigned long count;
+ unsigned long sg_list;
+ } UPDATE_CAPSULE;
+
+ struct {
+ efi_capsule_header_t **capsules;
+ unsigned long count;
+ u64 *max_size;
+ int *reset_type;
+ } QUERY_CAPSULE_CAPS;
+
+ struct {
+ efi_status_t (__efiapi *acpi_prm_handler)(u64, void *);
+ u64 param_buffer_addr;
+ void *context;
+ } ACPI_PRM_HANDLER;
+};
struct efi_runtime_work efi_rts_work;
/*
- * efi_queue_work: Queue efi_runtime_service() and wait until it's done
- * @rts: efi_runtime_service() function identifier
- * @rts_arg<1-5>: efi_runtime_service() function arguments
+ * efi_queue_work: Queue EFI runtime service call and wait for completion
+ * @_rts: EFI runtime service function identifier
+ * @_args: Arguments to pass to the EFI runtime service
*
* Accesses to efi_runtime_services() are serialized by a binary
* semaphore (efi_runtime_lock) and caller waits until the work is
* finished, hence _only_ one work is queued at a time and the caller
* thread waits for completion.
*/
-#define efi_queue_work(_rts, _arg1, _arg2, _arg3, _arg4, _arg5) \
-({ \
- efi_rts_work.status = EFI_ABORTED; \
- \
- if (!efi_enabled(EFI_RUNTIME_SERVICES)) { \
- pr_warn_once("EFI Runtime Services are disabled!\n"); \
- efi_rts_work.status = EFI_DEVICE_ERROR; \
- goto exit; \
- } \
- \
- init_completion(&efi_rts_work.efi_rts_comp); \
- INIT_WORK(&efi_rts_work.work, efi_call_rts); \
- efi_rts_work.arg1 = _arg1; \
- efi_rts_work.arg2 = _arg2; \
- efi_rts_work.arg3 = _arg3; \
- efi_rts_work.arg4 = _arg4; \
- efi_rts_work.arg5 = _arg5; \
- efi_rts_work.efi_rts_id = _rts; \
- \
- /* \
- * queue_work() returns 0 if work was already on queue, \
- * _ideally_ this should never happen. \
- */ \
- if (queue_work(efi_rts_wq, &efi_rts_work.work)) \
- wait_for_completion(&efi_rts_work.efi_rts_comp); \
- else \
- pr_err("Failed to queue work to efi_rts_wq.\n"); \
- \
- WARN_ON_ONCE(efi_rts_work.status == EFI_ABORTED); \
-exit: \
- efi_rts_work.efi_rts_id = EFI_NONE; \
- efi_rts_work.status; \
-})
+#define efi_queue_work(_rts, _args...) \
+ __efi_queue_work(EFI_ ## _rts, \
+ &(union efi_rts_args){ ._rts = { _args }})
#ifndef arch_efi_save_flags
#define arch_efi_save_flags(state_flags) local_save_flags(state_flags)
@@ -103,7 +145,7 @@ unsigned long efi_call_virt_save_flags(void)
return flags;
}
-void efi_call_virt_check_flags(unsigned long flags, const char *call)
+void efi_call_virt_check_flags(unsigned long flags, const void *caller)
{
unsigned long cur_flags, mismatch;
@@ -114,8 +156,8 @@ void efi_call_virt_check_flags(unsigned long flags, const char *call)
return;
add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_NOW_UNRELIABLE);
- pr_err_ratelimited(FW_BUG "IRQ flags corrupted (0x%08lx=>0x%08lx) by EFI %s\n",
- flags, cur_flags, call);
+ pr_err_ratelimited(FW_BUG "IRQ flags corrupted (0x%08lx=>0x%08lx) by EFI call from %pS\n",
+ flags, cur_flags, caller ?: __builtin_return_address(0));
arch_efi_restore_flags(flags);
}
@@ -170,74 +212,90 @@ extern struct semaphore __efi_uv_runtime_lock __alias(efi_runtime_lock);
/*
* Calls the appropriate efi_runtime_service() with the appropriate
* arguments.
- *
- * Semantics followed by efi_call_rts() to understand efi_runtime_work:
- * 1. If argument was a pointer, recast it from void pointer to original
- * pointer type.
- * 2. If argument was a value, recast it from void pointer to original
- * pointer type and dereference it.
*/
static void efi_call_rts(struct work_struct *work)
{
- void *arg1, *arg2, *arg3, *arg4, *arg5;
+ const union efi_rts_args *args = efi_rts_work.args;
efi_status_t status = EFI_NOT_FOUND;
+ unsigned long flags;
- arg1 = efi_rts_work.arg1;
- arg2 = efi_rts_work.arg2;
- arg3 = efi_rts_work.arg3;
- arg4 = efi_rts_work.arg4;
- arg5 = efi_rts_work.arg5;
+ arch_efi_call_virt_setup();
+ flags = efi_call_virt_save_flags();
switch (efi_rts_work.efi_rts_id) {
case EFI_GET_TIME:
- status = efi_call_virt(get_time, (efi_time_t *)arg1,
- (efi_time_cap_t *)arg2);
+ status = efi_call_virt(get_time,
+ args->GET_TIME.time,
+ args->GET_TIME.capabilities);
break;
case EFI_SET_TIME:
- status = efi_call_virt(set_time, (efi_time_t *)arg1);
+ status = efi_call_virt(set_time,
+ args->SET_TIME.time);
break;
case EFI_GET_WAKEUP_TIME:
- status = efi_call_virt(get_wakeup_time, (efi_bool_t *)arg1,
- (efi_bool_t *)arg2, (efi_time_t *)arg3);
+ status = efi_call_virt(get_wakeup_time,
+ args->GET_WAKEUP_TIME.enabled,
+ args->GET_WAKEUP_TIME.pending,
+ args->GET_WAKEUP_TIME.time);
break;
case EFI_SET_WAKEUP_TIME:
- status = efi_call_virt(set_wakeup_time, *(efi_bool_t *)arg1,
- (efi_time_t *)arg2);
+ status = efi_call_virt(set_wakeup_time,
+ args->SET_WAKEUP_TIME.enable,
+ args->SET_WAKEUP_TIME.time);
break;
case EFI_GET_VARIABLE:
- status = efi_call_virt(get_variable, (efi_char16_t *)arg1,
- (efi_guid_t *)arg2, (u32 *)arg3,
- (unsigned long *)arg4, (void *)arg5);
+ status = efi_call_virt(get_variable,
+ args->GET_VARIABLE.name,
+ args->GET_VARIABLE.vendor,
+ args->GET_VARIABLE.attr,
+ args->GET_VARIABLE.data_size,
+ args->GET_VARIABLE.data);
break;
case EFI_GET_NEXT_VARIABLE:
- status = efi_call_virt(get_next_variable, (unsigned long *)arg1,
- (efi_char16_t *)arg2,
- (efi_guid_t *)arg3);
+ status = efi_call_virt(get_next_variable,
+ args->GET_NEXT_VARIABLE.name_size,
+ args->GET_NEXT_VARIABLE.name,
+ args->GET_NEXT_VARIABLE.vendor);
break;
case EFI_SET_VARIABLE:
- status = efi_call_virt(set_variable, (efi_char16_t *)arg1,
- (efi_guid_t *)arg2, *(u32 *)arg3,
- *(unsigned long *)arg4, (void *)arg5);
+ status = efi_call_virt(set_variable,
+ args->SET_VARIABLE.name,
+ args->SET_VARIABLE.vendor,
+ args->SET_VARIABLE.attr,
+ args->SET_VARIABLE.data_size,
+ args->SET_VARIABLE.data);
break;
case EFI_QUERY_VARIABLE_INFO:
- status = efi_call_virt(query_variable_info, *(u32 *)arg1,
- (u64 *)arg2, (u64 *)arg3, (u64 *)arg4);
+ status = efi_call_virt(query_variable_info,
+ args->QUERY_VARIABLE_INFO.attr,
+ args->QUERY_VARIABLE_INFO.storage_space,
+ args->QUERY_VARIABLE_INFO.remaining_space,
+ args->QUERY_VARIABLE_INFO.max_variable_size);
break;
case EFI_GET_NEXT_HIGH_MONO_COUNT:
- status = efi_call_virt(get_next_high_mono_count, (u32 *)arg1);
+ status = efi_call_virt(get_next_high_mono_count,
+ args->GET_NEXT_HIGH_MONO_COUNT.high_count);
break;
case EFI_UPDATE_CAPSULE:
status = efi_call_virt(update_capsule,
- (efi_capsule_header_t **)arg1,
- *(unsigned long *)arg2,
- *(unsigned long *)arg3);
+ args->UPDATE_CAPSULE.capsules,
+ args->UPDATE_CAPSULE.count,
+ args->UPDATE_CAPSULE.sg_list);
break;
case EFI_QUERY_CAPSULE_CAPS:
status = efi_call_virt(query_capsule_caps,
- (efi_capsule_header_t **)arg1,
- *(unsigned long *)arg2, (u64 *)arg3,
- (int *)arg4);
+ args->QUERY_CAPSULE_CAPS.capsules,
+ args->QUERY_CAPSULE_CAPS.count,
+ args->QUERY_CAPSULE_CAPS.max_size,
+ args->QUERY_CAPSULE_CAPS.reset_type);
break;
+ case EFI_ACPI_PRM_HANDLER:
+#ifdef CONFIG_ACPI_PRMT
+ status = arch_efi_call_virt(args, ACPI_PRM_HANDLER.acpi_prm_handler,
+ args->ACPI_PRM_HANDLER.param_buffer_addr,
+ args->ACPI_PRM_HANDLER.context);
+ break;
+#endif
default:
/*
* Ideally, we should never reach here because a caller of this
@@ -246,17 +304,53 @@ static void efi_call_rts(struct work_struct *work)
*/
pr_err("Requested executing invalid EFI Runtime Service.\n");
}
+
+ efi_call_virt_check_flags(flags, efi_rts_work.caller);
+ arch_efi_call_virt_teardown();
+
efi_rts_work.status = status;
complete(&efi_rts_work.efi_rts_comp);
}
+static efi_status_t __efi_queue_work(enum efi_rts_ids id,
+ union efi_rts_args *args)
+{
+ efi_rts_work.efi_rts_id = id;
+ efi_rts_work.args = args;
+ efi_rts_work.caller = __builtin_return_address(0);
+ efi_rts_work.status = EFI_ABORTED;
+
+ if (!efi_enabled(EFI_RUNTIME_SERVICES)) {
+ pr_warn_once("EFI Runtime Services are disabled!\n");
+ efi_rts_work.status = EFI_DEVICE_ERROR;
+ goto exit;
+ }
+
+ init_completion(&efi_rts_work.efi_rts_comp);
+ INIT_WORK(&efi_rts_work.work, efi_call_rts);
+
+ /*
+ * queue_work() returns 0 if work was already on queue,
+ * _ideally_ this should never happen.
+ */
+ if (queue_work(efi_rts_wq, &efi_rts_work.work))
+ wait_for_completion(&efi_rts_work.efi_rts_comp);
+ else
+ pr_err("Failed to queue work to efi_rts_wq.\n");
+
+ WARN_ON_ONCE(efi_rts_work.status == EFI_ABORTED);
+exit:
+ efi_rts_work.efi_rts_id = EFI_NONE;
+ return efi_rts_work.status;
+}
+
static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
{
efi_status_t status;
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_GET_TIME, tm, tc, NULL, NULL, NULL);
+ status = efi_queue_work(GET_TIME, tm, tc);
up(&efi_runtime_lock);
return status;
}
@@ -267,7 +361,7 @@ static efi_status_t virt_efi_set_time(efi_time_t *tm)
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_SET_TIME, tm, NULL, NULL, NULL, NULL);
+ status = efi_queue_work(SET_TIME, tm);
up(&efi_runtime_lock);
return status;
}
@@ -280,8 +374,7 @@ static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled,
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_GET_WAKEUP_TIME, enabled, pending, tm, NULL,
- NULL);
+ status = efi_queue_work(GET_WAKEUP_TIME, enabled, pending, tm);
up(&efi_runtime_lock);
return status;
}
@@ -292,8 +385,7 @@ static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_SET_WAKEUP_TIME, &enabled, tm, NULL, NULL,
- NULL);
+ status = efi_queue_work(SET_WAKEUP_TIME, enabled, tm);
up(&efi_runtime_lock);
return status;
}
@@ -308,7 +400,7 @@ static efi_status_t virt_efi_get_variable(efi_char16_t *name,
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_GET_VARIABLE, name, vendor, attr, data_size,
+ status = efi_queue_work(GET_VARIABLE, name, vendor, attr, data_size,
data);
up(&efi_runtime_lock);
return status;
@@ -322,8 +414,7 @@ static efi_status_t virt_efi_get_next_variable(unsigned long *name_size,
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_GET_NEXT_VARIABLE, name_size, name, vendor,
- NULL, NULL);
+ status = efi_queue_work(GET_NEXT_VARIABLE, name_size, name, vendor);
up(&efi_runtime_lock);
return status;
}
@@ -338,24 +429,23 @@ static efi_status_t virt_efi_set_variable(efi_char16_t *name,
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_SET_VARIABLE, name, vendor, &attr, &data_size,
+ status = efi_queue_work(SET_VARIABLE, name, vendor, attr, data_size,
data);
up(&efi_runtime_lock);
return status;
}
static efi_status_t
-virt_efi_set_variable_nonblocking(efi_char16_t *name, efi_guid_t *vendor,
- u32 attr, unsigned long data_size,
- void *data)
+virt_efi_set_variable_nb(efi_char16_t *name, efi_guid_t *vendor, u32 attr,
+ unsigned long data_size, void *data)
{
efi_status_t status;
if (down_trylock(&efi_runtime_lock))
return EFI_NOT_READY;
- status = efi_call_virt(set_variable, name, vendor, attr, data_size,
- data);
+ status = efi_call_virt_pointer(efi.runtime, set_variable, name, vendor,
+ attr, data_size, data);
up(&efi_runtime_lock);
return status;
}
@@ -373,17 +463,15 @@ static efi_status_t virt_efi_query_variable_info(u32 attr,
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_QUERY_VARIABLE_INFO, &attr, storage_space,
- remaining_space, max_variable_size, NULL);
+ status = efi_queue_work(QUERY_VARIABLE_INFO, attr, storage_space,
+ remaining_space, max_variable_size);
up(&efi_runtime_lock);
return status;
}
static efi_status_t
-virt_efi_query_variable_info_nonblocking(u32 attr,
- u64 *storage_space,
- u64 *remaining_space,
- u64 *max_variable_size)
+virt_efi_query_variable_info_nb(u32 attr, u64 *storage_space,
+ u64 *remaining_space, u64 *max_variable_size)
{
efi_status_t status;
@@ -393,8 +481,9 @@ virt_efi_query_variable_info_nonblocking(u32 attr,
if (down_trylock(&efi_runtime_lock))
return EFI_NOT_READY;
- status = efi_call_virt(query_variable_info, attr, storage_space,
- remaining_space, max_variable_size);
+ status = efi_call_virt_pointer(efi.runtime, query_variable_info, attr,
+ storage_space, remaining_space,
+ max_variable_size);
up(&efi_runtime_lock);
return status;
}
@@ -405,8 +494,7 @@ static efi_status_t virt_efi_get_next_high_mono_count(u32 *count)
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_GET_NEXT_HIGH_MONO_COUNT, count, NULL, NULL,
- NULL, NULL);
+ status = efi_queue_work(GET_NEXT_HIGH_MONO_COUNT, count);
up(&efi_runtime_lock);
return status;
}
@@ -421,8 +509,13 @@ static void virt_efi_reset_system(int reset_type,
"could not get exclusive access to the firmware\n");
return;
}
+
+ arch_efi_call_virt_setup();
efi_rts_work.efi_rts_id = EFI_RESET_SYSTEM;
- __efi_call_virt(reset_system, reset_type, status, data_size, data);
+ arch_efi_call_virt(efi.runtime, reset_system, reset_type, status,
+ data_size, data);
+ arch_efi_call_virt_teardown();
+
up(&efi_runtime_lock);
}
@@ -437,8 +530,7 @@ static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules,
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_UPDATE_CAPSULE, capsules, &count, &sg_list,
- NULL, NULL);
+ status = efi_queue_work(UPDATE_CAPSULE, capsules, count, sg_list);
up(&efi_runtime_lock);
return status;
}
@@ -455,26 +547,44 @@ static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
if (down_interruptible(&efi_runtime_lock))
return EFI_ABORTED;
- status = efi_queue_work(EFI_QUERY_CAPSULE_CAPS, capsules, &count,
- max_size, reset_type, NULL);
+ status = efi_queue_work(QUERY_CAPSULE_CAPS, capsules, count,
+ max_size, reset_type);
up(&efi_runtime_lock);
return status;
}
-void efi_native_runtime_setup(void)
+void __init efi_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.set_variable_nonblocking = virt_efi_set_variable_nonblocking;
- 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.query_variable_info_nonblocking = virt_efi_query_variable_info_nonblocking;
- efi.update_capsule = virt_efi_update_capsule;
- efi.query_capsule_caps = virt_efi_query_capsule_caps;
+ 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.set_variable_nonblocking = virt_efi_set_variable_nb;
+ 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.query_variable_info_nonblocking = virt_efi_query_variable_info_nb;
+ efi.update_capsule = virt_efi_update_capsule;
+ efi.query_capsule_caps = virt_efi_query_capsule_caps;
}
+
+#ifdef CONFIG_ACPI_PRMT
+
+efi_status_t
+efi_call_acpi_prm_handler(efi_status_t (__efiapi *handler_addr)(u64, void *),
+ u64 param_buffer_addr, void *context)
+{
+ efi_status_t status;
+
+ if (down_interruptible(&efi_runtime_lock))
+ return EFI_ABORTED;
+ status = efi_queue_work(ACPI_PRM_HANDLER, handler_addr,
+ param_buffer_addr, context);
+ up(&efi_runtime_lock);
+ return status;
+}
+
+#endif
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-28 02:45:30 +0000