efi_loader: adjust file system info

When the GetInfo() method of the EFI_FILE_PROTOCOL is called to retrieve
the file system info we claim that the volume is read only and has no free
space. This leads to failures in programs that check this information
before writing to the volume like SCT's InstallSct.efi.

Currently there is no function to determine these parameters in U-Boot. So
let's return optimistic values:

Return that the volume is writable.

Return the volume size as free space.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c
index 6d3f680e56ca2b4300666f02c40bda408af19190..140116ddc4ace7ccd2e1916aad62b9a1bb47c498 100644 (file)
--- a/lib/efi_loader/efi_file.c
+++ b/lib/efi_loader/efi_file.c
@@ -656,9 +656,16 @@ static efi_status_t EFIAPI efi_file_getinfo(struct efi_file_handle *file,
                memset(info, 0, required_size);
 
                info->size = required_size;
-               info->read_only = true;
+               /*
+                * TODO: We cannot determine if the volume can be written to.
+                */
+               info->read_only = false;
                info->volume_size = part.size * part.blksz;
-               info->free_space = 0;
+               /*
+                * TODO: We currently have no function to determine the free
+                * space. The volume size is the best upper bound we have.
+                */
+               info->free_space = info->volume_size;
                info->block_size = part.blksz;
                /*
                 * TODO: The volume label is not available in U-Boot.