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[v6,09/17] efi_loader: capsule: add memory range capsule definitions

Message ID 20200907053426.1675646-10-takahiro.akashi@linaro.org
State New
Delegated to: Heinrich Schuchardt
Headers show
Series efi_loader: add capsule update support | expand

Commit Message

takahiro.akashi@linaro.org Sept. 7, 2020, 5:34 a.m. UTC
Memory range capsule gives us a way to notify that some memory regions
should be left untouched across the next reset.
See UEFI specification, section 8.5.3.

Since how we should handle this kind of capsule is totally up to
the system, no implementation will be added in this commit.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
 include/efi_api.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
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Patch

diff --git a/include/efi_api.h b/include/efi_api.h
index c128a0a66ce8..7a2a087c60ed 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -221,6 +221,10 @@  enum efi_reset_type {
 	EFI_GUID(0x39b68c46, 0xf7fb, 0x441b, 0xb6, 0xec, \
 		 0x16, 0xb0, 0xf6, 0x98, 0x21, 0xf3)
 
+#define EFI_MEMORY_RANGE_CAPSULE_GUID \
+	EFI_GUID(0xde9f0ec, 0x88b6, 0x428f, 0x97, 0x7a, \
+		 0x25, 0x8f, 0x1d, 0xe, 0x5e, 0x72)
+
 struct efi_capsule_header {
 	efi_guid_t capsule_guid;
 	u32 header_size;
@@ -236,6 +240,19 @@  struct efi_capsule_result_variable_header {
 	efi_status_t capsule_status;
 } __packed;
 
+struct efi_memory_range {
+	efi_physical_addr_t	address;
+	u64			length;
+};
+
+struct efi_memory_range_capsule {
+	struct efi_capsule_header *header;
+	/* EFI_MEMORY_TYPE: 0x80000000-0xFFFFFFFF */
+	enum efi_mem_type os_requested_memory_type;
+	u64 number_of_memory_ranges;
+	struct efi_memory_range memory_ranges[];
+} __packed;
+
 #define EFI_RT_SUPPORTED_GET_TIME			0x0001
 #define EFI_RT_SUPPORTED_SET_TIME			0x0002
 #define EFI_RT_SUPPORTED_GET_WAKEUP_TIME		0x0004