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authorHeinrich Schuchardt <xypron.glpk@gmx.de>2018-04-04 15:42:11 +0200
committerAlexander Graf <agraf@suse.de>2018-04-05 10:01:45 +0200
commit9e6835e6baab3d56e1bb2d4b96ee80f98e2196e7 (patch)
treef3816f885c1b891594d15183bead276c2ebcf3aa
parentc412166de28e7f7722b42a4c4c5e637da2d570ee (diff)
efi_loader: implement EFI_FILE_SYSTEM_INFO
Implement the information type EFI_FILE_SYSTEM_INFO in the service GetInfo() of the EFI_FILE_PROTOCOL. The volume label is not available in U-Boot. As a work-around use the partition name instead. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
-rw-r--r--include/efi_api.h13
-rw-r--r--include/efi_loader.h2
-rw-r--r--lib/efi_loader/efi_file.c38
3 files changed, 53 insertions, 0 deletions
diff --git a/include/efi_api.h b/include/efi_api.h
index 8af466a6dc..ae93061160 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -889,6 +889,10 @@ struct efi_simple_file_system_protocol {
EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \
0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
+#define EFI_FILE_SYSTEM_INFO_GUID \
+ EFI_GUID(0x09576e93, 0x6d3f, 0x11d2, \
+ 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
+
#define EFI_FILE_MODE_READ 0x0000000000000001
#define EFI_FILE_MODE_WRITE 0x0000000000000002
#define EFI_FILE_MODE_CREATE 0x8000000000000000
@@ -912,6 +916,15 @@ struct efi_file_info {
s16 file_name[0];
};
+struct efi_file_system_info {
+ u64 size;
+ u8 read_only;
+ u64 volume_size;
+ u64 free_space;
+ u32 block_size;
+ u16 volume_label[0];
+};
+
#define EFI_DRIVER_BINDING_PROTOCOL_GUID \
EFI_GUID(0x18a031ab, 0xb443, 0x4d1a,\
0xa5, 0xc0, 0x0c, 0x09, 0x26, 0x1e, 0x9f, 0x71)
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 21e6692e92..f2942fbb2b 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -112,6 +112,8 @@ 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;
+/* GUID for file system information */
+extern const efi_guid_t efi_file_system_info_guid;
extern const efi_guid_t efi_guid_device_path_utilities_protocol;
extern unsigned int __efi_runtime_start, __efi_runtime_stop;
diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c
index 2fc77cfb87..cec8347f55 100644
--- a/lib/efi_loader/efi_file.c
+++ b/lib/efi_loader/efi_file.c
@@ -12,6 +12,9 @@
#include <malloc.h>
#include <fs.h>
+/* GUID for file system information */
+const efi_guid_t efi_file_system_info_guid = EFI_FILE_SYSTEM_INFO_GUID;
+
struct file_system {
struct efi_simple_file_system_protocol base;
struct efi_device_path *dp;
@@ -472,6 +475,41 @@ static efi_status_t EFIAPI efi_file_getinfo(struct efi_file_handle *file,
info->attribute |= EFI_FILE_DIRECTORY;
ascii2unicode((u16 *)info->file_name, filename);
+ } else if (!guidcmp(info_type, &efi_file_system_info_guid)) {
+ struct efi_file_system_info *info = buffer;
+ disk_partition_t part;
+ efi_uintn_t required_size;
+ int r;
+
+ if (fh->fs->part >= 1)
+ r = part_get_info(fh->fs->desc, fh->fs->part, &part);
+ else
+ r = part_get_info_whole_disk(fh->fs->desc, &part);
+ if (r < 0) {
+ ret = EFI_DEVICE_ERROR;
+ goto error;
+ }
+ required_size = sizeof(info) + 2 *
+ (strlen((const char *)part.name) + 1);
+ if (*buffer_size < required_size) {
+ *buffer_size = required_size;
+ ret = EFI_BUFFER_TOO_SMALL;
+ goto error;
+ }
+
+ memset(info, 0, required_size);
+
+ info->size = required_size;
+ info->read_only = true;
+ info->volume_size = part.size * part.blksz;
+ info->free_space = 0;
+ info->block_size = part.blksz;
+ /*
+ * TODO: The volume label is not available in U-Boot.
+ * Use the partition name as substitute.
+ */
+ ascii2unicode((u16 *)info->volume_label,
+ (const char *)part.name);
} else {
ret = EFI_UNSUPPORTED;
}