u-boot.git/lib/efi_loader/efi_device_path.c, branch v2019.10

efi_loader: device_path: support Sandbox's "host" devices

2019-09-20T18:09:18+00:00

Sandbox's "host" devices are currently described as UCLASS_ROOT udevice
with DEV_IF_HOST block device. As the current implementation of
efi_device_path doesn't support such a type, any "host" device
on sandbox cannot be seen as a distinct object.

For example,
  => host bind 0 /foo/disk.img

  => efi devices
  Scanning disk host0...
  Found 1 disks
  Device           Device Path
  ================ ====================
  0000000015c19970 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)
  0000000015c19d70 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)

  => efi dh
  Handle           Protocols
  ================ ====================
  0000000015c19970 Device Path, Device Path To Text, Device Path Utilities, Unicode Collation 2, HII String, HII Database, HII Config Routing
  0000000015c19ba0 Driver Binding
  0000000015c19c10 Simple Text Output
  0000000015c19c80 Simple Text Input, Simple Text Input Ex
  0000000015c19d70 Block IO, Device Path, Simple File System

As you can see here, efi_root (0x0000000015c19970) and host0 device
(0x0000000015c19d70) have the same representation of device path.

This is not only inconvenient, but also confusing since two different
efi objects are associated with the same device path and
efi_dp_find_obj() will possibly return a wrong result.

Solution:
Each "host" device should be given an additional device path node
of "vendor device path" to make it distinguishable.

Signed-off-by: AKASHI Takahiro 
Reviewed-by: Heinrich Schuchardt 
Signed-off-by: Heinrich Schuchardt

efi_loader: correctly render CD-ROM device path nodes

2019-09-05T21:18:51+00:00

Correct the name of the partition size component in struct
efi_device_path_cdrom_path.

Render entry, start, and size when converting a CD-ROM device path node to
text.

Signed-off-by: Heinrich Schuchardt

efi_loader: efi_dp_from_file() expect UTF-8 path

2019-07-16T22:17:23+00:00

Properly convert UTF-8 file names to UTF-16.

Signed-off-by: Heinrich Schuchardt

efi_loader: check length in CreateDeviceNode()

2019-04-22T22:51:01+00:00

When creating a device path node ensure that the size of the allocated
memory at lest matches the size of the node header.

Signed-off-by: Heinrich Schuchardt

efi_loader: efi_setup_loaded_image() handle missing file name

2019-04-22T22:37:27+00:00

This is a preparatory patch.

efi_dp_split_file_path() is used to create device_path and file_path
from file_path for efi_setup_loaded_image().
In a special case, however, of HARDWARE_DEVICE/MEMORY, it doesn't
work expectedly since this path doesn't contain any FILE_PATH sub-type.

This patch makes a workaround.

Signed-off-by: AKASHI Takahiro 

Adjust the logic such that for all paths that do no end on a media file
path we return NULL as file_path.

Signed-off-by: Heinrich Schuchardt

efi_loader: add protection for block_dev

2019-04-12T20:00:42+00:00

Check the value of block_dev before to use this pointer.

This patch solves problem for the command "load" when ubifs
is previously mounted: in this case the function
blk_get_device_part_str("ubi 0") don't return error but return
block_dev = NULL and then data abort.

Signed-off-by: Patrick Delaunay 
Reviewed-by: Heinrich Schuchardt 
Signed-off-by: Heinrich Schuchardt

efi_loader: remove stray #define LOG_CATEGORY LOGL_ERR

2019-04-12T20:00:41+00:00

The statement '#define LOG_CATEGORY LOGL_ERR' makes not sense. LOGL_ERR is
not a LOG_CATEGORY. Remove the statement.

Signed-off-by: Heinrich Schuchardt

efi_loader: do not add \ in efi_fs_from_name()

2019-03-02T22:34:26+00:00

In the `efidebug boot add` command we do not want an unsolicited leading
backslash added to the file name.

There is no good reason to mark a loaded file with a backslash as absolute.
Anyway when reading files the file name will be interpreted as relative to
root directory of the device.

So let's get rid of this backslash.

Signed-off-by: Heinrich Schuchardt

efi_loader: efi_dp_split_file_path() error handling

2019-02-16T14:42:19+00:00

If the path passed to efi_dp_split_file_path() does not contain a
reference to a file it returns EFI_OUT_OF_RESOURCES. This does not properly
indicate the kind of the problem that occurred. Return
EFI_INVALID_PARAMETER instead.

Update function description.

Signed-off-by: Heinrich Schuchardt

efi_loader: allow device == NULL in efi_dp_from_name()

2018-12-02T23:13:15+00:00

This is a preparatory patch for use in efi_serialize_load_option()
as a load option's file_path should have both a device path and
a file path.

Signed-off-by: AKASHI Takahiro 
Signed-off-by: Alexander Graf