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efi_loader: implement CreateDeviceNode

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Implement the CreateDeviceNode service of the device path utility protocol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2018-04-16 07:59:05 +02:00 • committed by Alexander Graf
parent 065a8eca69
commit 211314c107
3 changed files with 35 additions and 2 deletions
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15
lib/efi_loader/efi_device_path.c
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@ -315,6 +315,21 @@ struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp,
return ret;
}
struct efi_device_path *efi_dp_create_device_node(const u8 type,
const u8 sub_type,
const u16 length)
{
struct efi_device_path *ret;
ret = dp_alloc(length);
if (!ret)
return ret;
ret->type = type;
ret->sub_type = sub_type;
ret->length = length;
return ret;
}
#ifdef CONFIG_DM
/* size of device-path not including END node for device and all parents
* up to the root device.