x86, efi: Add infrastructure for UEFI 2.0 runtime services
We're currently missing support for any of the runtime service calls
introduced with the UEFI 2.0 spec in 2006. Add the infrastructure for
supporting them.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Link: http://lkml.kernel.org/r/1307388985-7852-2-git-send-email-mjg@redhat.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index f4f6de9..a0e4244 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -131,6 +131,18 @@
data_size, data);
}
+static efi_status_t virt_efi_query_variable_info(u32 attr,
+ u64 *storage_space,
+ u64 *remaining_space,
+ u64 *max_variable_size)
+{
+ if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+ return EFI_UNSUPPORTED;
+
+ return efi_call_virt4(query_variable_info, attr, storage_space,
+ remaining_space, max_variable_size);
+}
+
static efi_status_t virt_efi_get_next_high_mono_count(u32 *count)
{
return efi_call_virt1(get_next_high_mono_count, count);
@@ -145,6 +157,28 @@
data_size, data);
}
+static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules,
+ unsigned long count,
+ unsigned long sg_list)
+{
+ if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+ return EFI_UNSUPPORTED;
+
+ return efi_call_virt3(update_capsule, capsules, count, sg_list);
+}
+
+static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
+ unsigned long count,
+ u64 *max_size,
+ int *reset_type)
+{
+ if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
+ return EFI_UNSUPPORTED;
+
+ return efi_call_virt4(query_capsule_caps, capsules, count, max_size,
+ reset_type);
+}
+
static efi_status_t __init phys_efi_set_virtual_address_map(
unsigned long memory_map_size,
unsigned long descriptor_size,
@@ -651,6 +685,9 @@
efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count;
efi.reset_system = virt_efi_reset_system;
efi.set_virtual_address_map = NULL;
+ 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;
if (__supported_pte_mask & _PAGE_NX)
runtime_code_page_mkexec();
early_iounmap(memmap.map, memmap.nr_map * memmap.desc_size);