[U-Boot] [PATCH 1/1] efi_loader: Initial EFI_DEVICE_PATH_UTILITIES_PROTOCOL
Heinrich Schuchardt
xypron.glpk at gmx.de
Sat Mar 3 14:52:51 UTC 2018
From: Leif Lindholm <leif.lindholm at linaro.org>
Not complete, but enough for Shell.efi and SCT.efi. We'll implement the
rest as needed or once we have SCT running properly so there is a way to
validate the interface against the conformance test suite.
Initial skeleton written by Leif, and then implementation by Rob.
Rebased on v2018.03-rc1.
Suggested-by: Leif Lindholm <leif.lindholm at linaro.org>
Suggested-by: Rob Clark <robdclark at gmail.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
include/efi_api.h | 29 ++++++++++
include/efi_loader.h | 4 ++
lib/efi_loader/Makefile | 3 +-
lib/efi_loader/efi_boottime.c | 6 ++
lib/efi_loader/efi_device_path_utilities.c | 89 ++++++++++++++++++++++++++++++
5 files changed, 130 insertions(+), 1 deletion(-)
create mode 100644 lib/efi_loader/efi_device_path_utilities.c
diff --git a/include/efi_api.h b/include/efi_api.h
index 559e58e5501..993e8231fca 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -588,6 +588,35 @@ struct efi_device_path_to_text_protocol
bool allow_shortcuts);
};
+#define EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID \
+ EFI_GUID(0x0379be4e, 0xd706, 0x437d, \
+ 0xb0, 0x37, 0xed, 0xb8, 0x2f, 0xb7, 0x72, 0xa4)
+
+struct efi_device_path_utilities_protocol {
+ efi_uintn_t (EFIAPI *get_device_path_size)(
+ const struct efi_device_path *device_path);
+ struct efi_device_path *(EFIAPI *duplicate_device_path)(
+ const struct efi_device_path *device_path);
+ struct efi_device_path *(EFIAPI *append_device_path)(
+ const struct efi_device_path *src1,
+ const struct efi_device_path *src2);
+ struct efi_device_path *(EFIAPI *append_device_node)(
+ const struct efi_device_path *device_path,
+ const struct efi_device_path *device_node);
+ struct efi_device_path *(EFIAPI *append_device_path_instance)(
+ const struct efi_device_path *device_path,
+ const struct efi_device_path *device_path_instance);
+ struct efi_device_path *(EFIAPI *get_next_device_path_instance)(
+ struct efi_device_path **device_path_instance,
+ efi_uintn_t *device_path_instance_size);
+ bool (EFIAPI *is_device_path_multi_instance)(
+ const struct efi_device_path *device_path);
+ struct efi_device_path *(EFIAPI *create_device_node)(
+ uint8_t node_type,
+ uint8_t node_sub_type,
+ uint16_t node_length);
+};
+
#define EFI_GOP_GUID \
EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \
0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 7caae97ea70..0937b47e4bf 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -83,6 +83,9 @@ extern struct efi_simple_text_output_protocol efi_con_out;
extern struct efi_simple_input_interface efi_con_in;
extern struct efi_console_control_protocol efi_console_control;
extern const struct efi_device_path_to_text_protocol efi_device_path_to_text;
+/* implementation of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL */
+extern const struct efi_device_path_utilities_protocol
+ efi_device_path_utilities;
uint16_t *efi_dp_str(struct efi_device_path *dp);
@@ -97,6 +100,7 @@ extern const efi_guid_t efi_guid_loaded_image;
extern const efi_guid_t efi_guid_device_path_to_text_protocol;
extern const efi_guid_t efi_simple_file_system_protocol_guid;
extern const efi_guid_t efi_file_info_guid;
+extern const efi_guid_t efi_guid_device_path_utilities_protocol;
extern unsigned int __efi_runtime_start, __efi_runtime_stop;
extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop;
diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile
index 2722265ee3d..55c97c04766 100644
--- a/lib/efi_loader/Makefile
+++ b/lib/efi_loader/Makefile
@@ -17,7 +17,8 @@ endif
obj-$(CONFIG_CMD_BOOTEFI_HELLO) += helloworld_efi.o
obj-y += efi_image_loader.o efi_boottime.o efi_runtime.o efi_console.o
obj-y += efi_memory.o efi_device_path_to_text.o efi_device_path.o
-obj-y += efi_file.o efi_variable.o efi_bootmgr.o efi_watchdog.o
+obj-y += efi_device_path_utilities.o efi_file.o efi_variable.o efi_bootmgr.o
+obj-y += efi_watchdog.o
obj-$(CONFIG_LCD) += efi_gop.o
obj-$(CONFIG_DM_VIDEO) += efi_gop.o
obj-$(CONFIG_PARTITIONS) += efi_disk.o
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 013e0353c3a..0fd272253d2 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1426,6 +1426,12 @@ efi_status_t efi_setup_loaded_image(
if (ret != EFI_SUCCESS)
goto failure;
+ ret = efi_add_protocol(obj->handle,
+ &efi_guid_device_path_utilities_protocol,
+ (void *)&efi_device_path_utilities);
+ if (ret != EFI_SUCCESS)
+ goto failure;
+
return ret;
failure:
printf("ERROR: Failure to install protocols for loaded image\n");
diff --git a/lib/efi_loader/efi_device_path_utilities.c b/lib/efi_loader/efi_device_path_utilities.c
new file mode 100644
index 00000000000..bc97eeee31b
--- /dev/null
+++ b/lib/efi_loader/efi_device_path_utilities.c
@@ -0,0 +1,89 @@
+/*
+ * EFI device path interface
+ *
+ * Copyright (c) 2017 Leif Lindholm
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <efi_loader.h>
+
+const efi_guid_t efi_guid_device_path_utilities_protocol =
+ EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID;
+
+static efi_uintn_t EFIAPI get_device_path_size(
+ const struct efi_device_path *device_path)
+{
+ efi_uintn_t sz = 0;
+
+ EFI_ENTRY("%p", device_path);
+ /* size includes the END node: */
+ if (device_path)
+ sz = efi_dp_size(device_path) + sizeof(struct efi_device_path);
+ return EFI_EXIT(sz);
+}
+
+static struct efi_device_path * EFIAPI duplicate_device_path(
+ const struct efi_device_path *device_path)
+{
+ EFI_ENTRY("%p", device_path);
+ return EFI_EXIT(efi_dp_dup(device_path));
+}
+
+static struct efi_device_path * EFIAPI append_device_path(
+ const struct efi_device_path *src1,
+ const struct efi_device_path *src2)
+{
+ EFI_ENTRY("%p, %p", src1, src2);
+ return EFI_EXIT(efi_dp_append(src1, src2));
+}
+
+static struct efi_device_path * EFIAPI append_device_node(
+ const struct efi_device_path *device_path,
+ const struct efi_device_path *device_node)
+{
+ EFI_ENTRY("%p, %p", device_path, device_node);
+ return EFI_EXIT(efi_dp_append_node(device_path, device_node));
+}
+
+static struct efi_device_path * EFIAPI append_device_path_instance(
+ const struct efi_device_path *device_path,
+ const struct efi_device_path *device_path_instance)
+{
+ EFI_ENTRY("%p, %p", device_path, device_path_instance);
+ return EFI_EXIT(NULL);
+}
+
+static struct efi_device_path * EFIAPI get_next_device_path_instance(
+ struct efi_device_path **device_path_instance,
+ efi_uintn_t *device_path_instance_size)
+{
+ EFI_ENTRY("%p, %p", device_path_instance, device_path_instance_size);
+ return EFI_EXIT(NULL);
+}
+
+static bool EFIAPI is_device_path_multi_instance(
+ const struct efi_device_path *device_path)
+{
+ EFI_ENTRY("%p", device_path);
+ return EFI_EXIT(false);
+}
+
+static struct efi_device_path * EFIAPI create_device_node(
+ uint8_t node_type, uint8_t node_sub_type, uint16_t node_length)
+{
+ EFI_ENTRY("%u, %u, %u", node_type, node_sub_type, node_length);
+ return EFI_EXIT(NULL);
+}
+
+const struct efi_device_path_utilities_protocol efi_device_path_utilities = {
+ .get_device_path_size = get_device_path_size,
+ .duplicate_device_path = duplicate_device_path,
+ .append_device_path = append_device_path,
+ .append_device_node = append_device_node,
+ .append_device_path_instance = append_device_path_instance,
+ .get_next_device_path_instance = get_next_device_path_instance,
+ .is_device_path_multi_instance = is_device_path_multi_instance,
+ .create_device_node = create_device_node,
+};
--
2.14.2
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