From: Dmitry Osipenko <digetx@gmail.com>
To: "Jens Axboe" <axboe@kernel.dk>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Michał Mirosław" <mirq-linux@rere.qmqm.pl>,
"David Heidelberg" <david@ixit.cz>,
"Peter Geis" <pgwipeout@gmail.com>,
"Ulf Hansson" <ulf.hansson@linaro.org>,
"Adrian Hunter" <adrian.hunter@intel.com>,
"Christoph Hellwig" <hch@infradead.org>,
"Davidlohr Bueso" <dave@stgolabs.net>,
"Rob Herring" <robh+dt@kernel.org>,
"Ion Agorria" <AG0RRIA@yahoo.com>,
"Svyatoslav Ryhel" <clamor95@gmail.com>
Cc: linux-tegra@vger.kernel.org, linux-block@vger.kernel.org,
linux-efi <linux-efi@vger.kernel.org>
Subject: [PATCH v5 5/5] partitions/efi: Support non-standard GPT location
Date: Wed, 18 Aug 2021 03:55:47 +0300 [thread overview]
Message-ID: <20210818005547.14497-6-digetx@gmail.com> (raw)
In-Reply-To: <20210818005547.14497-1-digetx@gmail.com>
Support looking up GPT at a non-standard location specified by a block
device driver.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
block/partitions/efi.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/block/partitions/efi.c b/block/partitions/efi.c
index aaa3dc487cb5..b9509f445b3c 100644
--- a/block/partitions/efi.c
+++ b/block/partitions/efi.c
@@ -585,6 +585,8 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
gpt_header *pgpt = NULL, *agpt = NULL;
gpt_entry *pptes = NULL, *aptes = NULL;
legacy_mbr *legacymbr;
+ struct gendisk *disk = state->disk;
+ const struct block_device_operations *fops = disk->fops;
sector_t total_sectors = get_capacity(state->disk);
u64 lastlba;
@@ -619,6 +621,17 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
if (!good_agpt && force_gpt)
good_agpt = is_gpt_valid(state, lastlba, &agpt, &aptes);
+ if (!good_agpt && force_gpt && fops->alternative_gpt_sector) {
+ struct block_device *bdev = disk->part0;
+ sector_t agpt_sector;
+ int err;
+
+ err = fops->alternative_gpt_sector(bdev, &agpt_sector);
+ if (!err)
+ good_agpt = is_gpt_valid(state, agpt_sector,
+ &agpt, &aptes);
+ }
+
/* The obviously unsuccessful case */
if (!good_pgpt && !good_agpt)
goto fail;
--
2.32.0
next prev parent reply other threads:[~2021-08-18 0:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 0:55 [PATCH v5 0/5] Support EFI partition on NVIDIA Tegra devices Dmitry Osipenko
2021-08-18 0:55 ` [PATCH v5 1/5] block: Add alternative_gpt_sector() operation Dmitry Osipenko
2021-08-18 5:20 ` Christoph Hellwig
2021-08-18 5:41 ` Dmitry Osipenko
2021-08-18 0:55 ` [PATCH v5 2/5] mmc: block: Support " Dmitry Osipenko
2021-08-18 5:28 ` Christoph Hellwig
2021-08-18 5:40 ` Dmitry Osipenko
2021-08-18 0:55 ` [PATCH v5 3/5] mmc: core: Add raw_boot_mult field to mmc_ext_csd Dmitry Osipenko
2021-08-18 0:55 ` [PATCH v5 4/5] mmc: sdhci-tegra: Implement alternative_gpt_sector() Dmitry Osipenko
2021-08-18 5:30 ` Christoph Hellwig
2021-08-18 5:42 ` Dmitry Osipenko
2021-08-18 9:55 ` Ulf Hansson
2021-08-18 13:35 ` Thierry Reding
2021-08-18 16:15 ` Dmitry Osipenko
2021-08-19 8:58 ` Thierry Reding
2021-08-19 13:20 ` Ulf Hansson
2021-08-19 17:19 ` Thierry Reding
2021-08-20 8:16 ` Ulf Hansson
2021-08-18 0:55 ` Dmitry Osipenko [this message]
2021-08-18 5:25 ` [PATCH v5 5/5] partitions/efi: Support non-standard GPT location Christoph Hellwig
2021-08-18 5:41 ` Dmitry Osipenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210818005547.14497-6-digetx@gmail.com \
--to=digetx@gmail.com \
--cc=AG0RRIA@yahoo.com \
--cc=adrian.hunter@intel.com \
--cc=axboe@kernel.dk \
--cc=clamor95@gmail.com \
--cc=dave@stgolabs.net \
--cc=david@ixit.cz \
--cc=hch@infradead.org \
--cc=jonathanh@nvidia.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-efi@vger.kernel.org \
--cc=linux-tegra@vger.kernel.org \
--cc=mirq-linux@rere.qmqm.pl \
--cc=pgwipeout@gmail.com \
--cc=robh+dt@kernel.org \
--cc=thierry.reding@gmail.com \
--cc=ulf.hansson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).