u-boot.git/lib/efi_loader/efi_device_path.c, branch v2018.07

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini

efi_loader: complete EFI_DEVICE_PATH_UTILITIES_PROTOCOL

2018-04-23T19:34:28+00:00

The missing services of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL are
implemented.

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

efi_loader: correcty determine total device path length

2018-04-23T19:34:28+00:00

Device paths may consist of multiple instances. Up to now we have only
considered the size of the first instance. For the services of the
EFI_DEVICE_PATH_UTILITIES_PROTOCOL in most cases the total length of the
device path is relevant.

So let's rename efi_dp_size() to efi_dp_instance_size() and create a new
function efi_dp_size() that calculates the total device path length.

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

efi_loader: correctly determine length of empty device path

2018-04-23T19:34:28+00:00

efi_dp_size() is meant to return the device path length without the end
node.

The length of a device path containing only an end node was incorrectly
reported as 4.

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

efi_loader: fix AppendDevicePath

2018-04-23T19:34:28+00:00

The logic of the AppendDevicePath service of the
EFI_DEVICE_PATH_UTILITIES_PROTOCOL is incorrectly implemented:

* if both paths are NULL an end node has to be returned
* if both paths are not NULL the end node of the second device path has to
  be kept

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

efi_loader: implement CreateDeviceNode

2018-04-23T19:34:28+00:00

Implement the CreateDeviceNode service of the device path utility protocol.

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

Revert "Kconfig: cmd: Make networking command dependent on NET"

2018-04-13T20:48:34+00:00

This reverts the parts of commit 3b3ea2c56ec4bc5588281fd103c744e608f8b25c
where it changed the EFI dependency on NET.

Signed-off-by: Joe Hershberger 

Reviewed-by: Duncan Hare

efi_loader: initialize device path on alloc

2018-04-04T09:22:35+00:00

Since the backing memory for a new device path can contain stale
data we have to make sure that we zero the buffer.  Otherwise some
code paths that don't set all fields in a structure backed by this
device path might contain unwanted stale data.

Signed-off-by: Patrick Wildt 
Reviewed-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

efi_loader: Fix network DP with DM_ETH

2018-04-04T09:09:18+00:00

When CONFIG_DM_ETH is set, we assemble the device path properly with a
full device hierarchy. Our helper function dp_fill() even put the MAC
node itself in it for us.

However, for non-DM compatibility we also have code in that added the
MAC node manually. That code now runs on top of the existing MAC node:

  Handle 0x3db2f6b0
    /HardwareVendor(e61d73b9-a384-4acc-aeab-82e828f3628b)[0: ]
    /USBClass(0,0,9,0,0)/USBClass(424,9514,9,0,2)/MacAddr(b8:27:eb:e1:81:47,1)
    /MacAddr(b8:27:eb:e1:81:47,57)/EndEntire

We obviously don't need the additional node and in fact, grub chokes on
it and fails to match the DP against the ethernet device node. So this
patch moves the additional MAC node into the non-DM code path:

  Handle 0x3db3fde0
    /HardwareVendor(e61d73b9-a384-4acc-aeab-82e828f3628b)[0: ]
    /USBClass(0,0,9,0,0)/USBClass(424,9514,9,0,2)/MacAddr(b8:27:eb:e1:81:47,1)
    /EndEntire

While at it, we also mark the non-DM MAC node as ethernet.

Fixes: b66c60dde9d ("efi_loader: add device-path utils")
Signed-off-by: Alexander Graf

Kconfig: cmd: Make networking command dependent on NET

2018-02-27T21:25:30+00:00

Enable networking command only when NET is enabled.
And remove selecting NET for CMD_NET

Signed-off-by: Michal Simek 
Signed-off-by: Tom Rini