u-boot.git/lib/efi_loader/efi_device_path.c, branch v2020.04

efi_loader: remove unused function efi_dp_from_dev()

2019-11-19T11:10:22+00:00

Function efi_dp_from_dev() is not used anywhere. Remove it.

Signed-off-by: Heinrich Schuchardt

efi_loader: fix efi_dp_from_name()

2019-11-12T22:13:54+00:00

Correctly check the return value of efi_dp_from_file().
If we can determine device path for the file, should not depend on the
device path for the device being requested.
Provide a function description for efi_dp_from_name().

Reported-by: Coverity CID 273159, CID 273158
Fixes: 08c51fff30cc ("efi_loader: device_path: check against file path length")
Signed-off-by: Heinrich Schuchardt

efi_loader: device_path: check against file path length

2019-10-17T17:19:55+00:00

device_path strcuture has 2 bytes of "length" field, and so
file path length should not exceed this limit, 65535.

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

efi: device path for nvme

2019-10-06T14:02:37+00:00

This allows our EFI API to create a device path node for NVMe
devices.  It adds the necessary device path struct, uses the
nvme namespace accessor to retrieve the id and eui64, and also
provides support for the device path text protocol.

Signed-off-by: Patrick Wildt 
Tested-by: Heinrich Schuchardt 
Reviewed-by: Heinrich Schuchardt

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