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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>,
	"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 v6 3/5] mmc: core: Add raw_boot_mult field to mmc_ext_csd
Date: Thu, 19 Aug 2021 01:19:18 +0300	[thread overview]
Message-ID: <20210818221920.3893-4-digetx@gmail.com> (raw)
In-Reply-To: <20210818221920.3893-1-digetx@gmail.com>

Bootloader of NVIDIA Tegra devices 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. The offset needs to
be known in order to find the GPT entry on eMMC storage of Tegra devices.
Add raw_boot_mult field to mmc_ext_csd which allows to get size of the
boot 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 838726b68ff3..29e58ffae379 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -418,6 +418,8 @@ 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 74e6c0624d27..37f975875102 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -109,6 +109,7 @@ 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 */
-- 
2.32.0


  parent reply	other threads:[~2021-08-18 22:19 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-18 22:19 [PATCH v6 0/5] Support EFI partition on NVIDIA Tegra devices Dmitry Osipenko
2021-08-18 22:19 ` [PATCH v6 1/5] block: Add alternative_gpt_sector() operation Dmitry Osipenko
2021-08-19  7:08   ` Christoph Hellwig
2021-08-18 22:19 ` [PATCH v6 2/5] partitions/efi: Support non-standard GPT location Dmitry Osipenko
2021-08-19  7:11   ` Christoph Hellwig
2021-08-19 15:17   ` Davidlohr Bueso
2021-08-20 22:45   ` Michał Mirosław
2021-08-21 17:26     ` Dmitry Osipenko
2021-08-18 22:19 ` Dmitry Osipenko [this message]
2021-08-18 22:19 ` [PATCH v6 4/5] mmc: block: Support alternative_gpt_sector() operation Dmitry Osipenko
2021-08-18 22:19 ` [PATCH v6 5/5] mmc: sdhci-tegra: Enable MMC_CAP2_ALT_GPT_SECTOR Dmitry Osipenko
2021-08-19 17:18 ` [PATCH v6 0/5] Support EFI partition on NVIDIA Tegra devices Davidlohr Bueso
2021-08-19 22:27   ` Dmitry Osipenko
2021-08-20 22:41 ` Michał Mirosław
2021-08-21 17:27   ` Dmitry Osipenko
2021-08-23 23:40     ` Michał Mirosław
2021-08-24 10:38       ` Michał Mirosław
2021-08-24 16:06         ` Dmitry Osipenko
2021-08-24 17:03           ` Michał Mirosław

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