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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>,
	"Stephen Warren" <swarren@wwwdotorg.org>,
	"Nicolas Chauvet" <kwizart@gmail.com>,
	"Ulf Hansson" <ulf.hansson@linaro.org>,
	"Adrian Hunter" <adrian.hunter@intel.com>,
	"Billy Laws" <blaws05@gmail.com>
Cc: linux-tegra@vger.kernel.org, linux-block@vger.kernel.org,
	Andrey Danin <danindrey@mail.ru>,
	Gilles Grandou <gilles@grandou.net>,
	Ryan Grachek <ryan@edited.us>,
	linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v1 1/3] mmc: core: Add raw_boot_mult field to mmc_ext_csd
Date: Tue, 25 Feb 2020 02:18:39 +0300	[thread overview]
Message-ID: <20200224231841.26550-2-digetx@gmail.com> (raw)
In-Reply-To: <20200224231841.26550-1-digetx@gmail.com>

In order to support parsing of NVIDIA Tegra Partition Table format, we
need to know the BOOT_SIZE_MULT value of the Extended CSD register because
NVIDIA's bootloader linearizes the boot0/boot1/main partitions into a
single virtual space, and thus, all partition addresses are shifted by
the size of boot0 + boot1 partitions.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/mmc/core/mmc.c   | 2 ++
 include/linux/mmc/card.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index f6912ded652d..88e5b4224d3c 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -417,6 +417,8 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
 		ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
 	card->ext_csd.raw_hc_erase_grp_size =
 		ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
+	card->ext_csd.raw_boot_mult =
+		ext_csd[EXT_CSD_BOOT_MULT];
 	if (card->ext_csd.rev >= 3) {
 		u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
 		card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index cf3780a6ccc4..90b1d83ce675 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -108,6 +108,7 @@ struct mmc_ext_csd {
 	u8			raw_hc_erase_gap_size;	/* 221 */
 	u8			raw_erase_timeout_mult;	/* 223 */
 	u8			raw_hc_erase_grp_size;	/* 224 */
+	u8			raw_boot_mult;		/* 226 */
 	u8			raw_sec_trim_mult;	/* 229 */
 	u8			raw_sec_erase_mult;	/* 230 */
 	u8			raw_sec_feature_support;/* 231 */
-- 
2.24.0


  reply	other threads:[~2020-02-24 23:22 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-24 23:18 [PATCH v1 0/3] Introduce NVIDIA Tegra Partition Table Dmitry Osipenko
2020-02-24 23:18 ` Dmitry Osipenko [this message]
2020-03-01 10:50   ` [PATCH v1 1/3] mmc: core: Add raw_boot_mult field to mmc_ext_csd Avri Altman
2020-03-01 23:09     ` Dmitry Osipenko
2020-02-24 23:18 ` [PATCH v1 2/3] mmc: block: Add mmc_bdev_to_card() helper Dmitry Osipenko
2020-02-25 14:53   ` Ulf Hansson
2020-02-25 15:46     ` Dmitry Osipenko
2020-02-27  0:40   ` kbuild test robot
2020-02-24 23:18 ` [PATCH v1 3/3] partitions: Introduce NVIDIA Tegra Partition Table Dmitry Osipenko
2020-02-25  0:20   ` Stephen Warren
2020-02-25  1:35     ` Dmitry Osipenko
2020-03-04 16:36     ` Ulf Hansson
2020-03-04 17:09       ` Dmitry Osipenko
2020-03-06 13:37         ` Ulf Hansson
2020-03-06 16:52           ` Stephen Warren
2020-03-06 21:56             ` Dmitry Osipenko
2020-03-06 23:11           ` Dmitry Osipenko

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