Hi Takahiro,
On Tue, 14 Dec 2021 at 00:05, AKASHI Takahiro takahiro.akashi@linaro.org wrote:
On Mon, Dec 13, 2021 at 05:51:45AM -0700, Simon Glass wrote:
Hi Takahiro,
On Thu, 9 Dec 2021 at 23:58, AKASHI Takahiro takahiro.akashi@linaro.org wrote:
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
drivers/core/Makefile | 2 +- drivers/core/tag.c | 162 ++++++++++++++++++++++++++++++++++++++++++ include/dm/tag.h | 76 ++++++++++++++++++++ 3 files changed, 239 insertions(+), 1 deletion(-) create mode 100644 drivers/core/tag.c create mode 100644 include/dm/tag.h
Needs comments and a test, but looks good.
How does the list itself get inited?
Isn't LIST_HEAD(dmtag_list) enough?
Yes but that is a BSS var so cannot be used in SPL or before relocation. How about moving it to global_data?
Regards, Simon