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dm: add tag support

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With dm-tag feature, any U-Boot subsystem is allowed to associate
arbitrary number of data with a particular udevice. This can been
see as expanding "struct udevice" without modifying the definition.

As a first user, UEFI subsystem makes use of tags to associate
an efi_disk object with a block device.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
AKASHI Takahiro
2022-03-08 20:36:46 +09:00
committed by Heinrich Schuchardt
parent 75a9d75041
commit 6b7a6210fd
5 changed files with 256 additions and 1 deletions
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2
drivers/core/Makefile
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@@ -2,7 +2,7 @@
#
# Copyright (c) 2013 Google, Inc
obj-y += device.o fdtaddr.o lists.o root.o uclass.o util.o
obj-y += device.o fdtaddr.o lists.o root.o uclass.o util.o tag.o
obj-$(CONFIG_$(SPL_TPL_)ACPIGEN) += acpi.o
obj-$(CONFIG_DEVRES) += devres.o
obj-$(CONFIG_$(SPL_)DM_DEVICE_REMOVE) += device-remove.o