From: Punit Agrawal <punit1.agrawal@toshiba.co.jp>
To: u-boot@lists.denx.de
Subject: [PATCH 10/16] efi_loader: UEFI variable persistence
Date: Mon, 30 Mar 2020 19:03:27 +0900 [thread overview]
Message-ID: <87k1325fdc.fsf@kokedama.swc.toshiba.co.jp> (raw)
In-Reply-To: <d2507626-eb25-78e4-bad0-405f10a0d1a8@gmx.de> (Heinrich Schuchardt's message of "Fri, 27 Mar 2020 11:30:47 +0100")
Heinrich Schuchardt <xypron.glpk@gmx.de> writes:
> On 3/27/20 9:07 AM, Punit Agrawal wrote:
>> Heinrich Schuchardt <xypron.glpk@gmx.de> writes:
>>
>>> Persist non-volatile UEFI variables in a file on the EFI system partition.
>>>
>>> The file is written:
>>>
>>> * whenever a non-volatile UEFI variable is changed after initialization
>>> of the UEFI sub-system.
>>> * upon ExitBootServices()
>>
>> I might be missing something but how does this cope with the ESP being
>> on a storage medium access to which is owned by the OS at runtime? e.g.,
>> partition on eMMC or SATA drive.
>
> This development does not guard against manipulation by the OS.
>
> Ilias is cureently working on a solution for ATF based devices that will
> provide secure storage for variables.
Thanks for the clarification.
So the current patches are more RFC material - as it would be worth
seeing the whole picture before things start getting baked in.
I only recently started looking at EFI features in u-boot and am trying
to piece the story together based on the patches in-flight.
Thanks,
Punit
[...]
next prev parent reply other threads:[~2020-03-30 10:03 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-27 5:27 [PATCH 00/16] efi_loader: non-volatile and runtime variables Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 01/16] cmd: efidebug: fix int to pointer cast Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 02/16] efi_loader: only reserve memory if fdt node enabled Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 03/16] efi_loader: eliminate EFI_CALL() for variable access Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 04/16] part: detect EFI system partition Heinrich Schuchardt
2020-03-27 6:35 ` Punit Agrawal
2020-03-27 7:21 ` Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 05/16] efi_loader: identify " Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 06/16] efi_loader: keep attributes in efi_set_variable_int() Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 07/16] efi_loader: export initialization state Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 08/16] efi_loader: change setup sequence Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 09/16] efi_loader: imply FAT, FAT_WRITE Heinrich Schuchardt
2020-03-31 5:28 ` AKASHI Takahiro
2020-03-31 6:44 ` Heinrich Schuchardt
2020-03-31 7:44 ` AKASHI Takahiro
2020-03-31 8:20 ` Mark Kettenis
2020-04-01 0:31 ` AKASHI Takahiro
2020-04-01 6:43 ` Heinrich Schuchardt
2020-04-01 17:56 ` Mark Kettenis
2020-04-02 1:34 ` AKASHI Takahiro
2020-03-31 13:08 ` Heinrich Schuchardt
2020-03-31 23:57 ` AKASHI Takahiro
2020-04-01 1:14 ` AKASHI Takahiro
2020-04-01 6:31 ` Heinrich Schuchardt
2020-04-01 7:04 ` AKASHI Takahiro
2020-04-02 12:33 ` Ilias Apalodimas
2020-03-27 5:27 ` [PATCH 10/16] efi_loader: UEFI variable persistence Heinrich Schuchardt
2020-03-27 8:07 ` Punit Agrawal
2020-03-27 10:30 ` Heinrich Schuchardt
2020-03-30 10:03 ` Punit Agrawal [this message]
2020-04-06 16:06 ` Ilias Apalodimas
2021-01-02 22:15 ` Peter Robinson
2020-03-27 5:27 ` [PATCH 11/16] efi_loader: export efi_convert_pointer() Heinrich Schuchardt
2020-03-27 5:27 ` [PATCH 12/16] efi_loader: optional pointer for ConvertPointer Heinrich Schuchardt
2020-03-31 5:23 ` AKASHI Takahiro
2020-03-31 6:52 ` Heinrich Schuchardt
2020-03-31 7:51 ` AKASHI Takahiro
2020-03-27 5:27 ` [PATCH 13/16] efi_loader: memory buffer for variables Heinrich Schuchardt
2020-03-27 8:09 ` Punit Agrawal
2020-03-27 10:45 ` Heinrich Schuchardt
2020-03-30 10:50 ` Punit Agrawal
2020-03-27 5:27 ` [PATCH 14/16] efi_loader: use memory based variable storage Heinrich Schuchardt
2020-03-27 19:44 ` [PATCH 00/16] efi_loader: non-volatile and runtime variables Simon Glass
2020-03-28 6:42 ` Heinrich Schuchardt
2020-03-31 6:05 ` [PATCH 15/16] efi_loader: enable UEFI variables at runtime Heinrich Schuchardt
2020-03-31 6:05 ` [PATCH 15/16] efi_selftest: adjust runtime test for variables Heinrich Schuchardt
2020-04-01 1:41 ` [PATCH 15/16] efi_loader: enable UEFI variables at runtime AKASHI Takahiro
2020-04-01 6:26 ` Heinrich Schuchardt
2020-04-01 6:51 ` AKASHI Takahiro
2020-03-31 6:07 ` [PATCH 16/16] efi_selftest: adjust runtime test for variables Heinrich Schuchardt
2020-04-01 1:05 ` AKASHI Takahiro
2020-04-01 6:37 ` Heinrich Schuchardt
2020-04-01 7:27 ` AKASHI Takahiro
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