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Message-Id: <20200323163431.7678-2-digetx@gmail.com>
Date: Mon, 23 Mar 2020 19:34:22 +0300
From: Dmitry Osipenko <digetx@...il.com>
To: Jens Axboe <axboe@...nel.dk>,
Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Michał Mirosław <mirq-linux@...e.qmqm.pl>,
David Heidelberg <david@...t.cz>,
Peter Geis <pgwipeout@...il.com>,
Stephen Warren <swarren@...dotorg.org>,
Nicolas Chauvet <kwizart@...il.com>,
Ulf Hansson <ulf.hansson@...aro.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Billy Laws <blaws05@...il.com>
Cc: linux-tegra@...r.kernel.org, linux-block@...r.kernel.org,
Andrey Danin <danindrey@...l.ru>,
Gilles Grandou <gilles@...ndou.net>,
Ryan Grachek <ryan@...ted.us>, linux-mmc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v3 01/10] mmc: core: Add raw_boot_mult field to mmc_ext_csd
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@...il.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 de94fbe629bd..4b7261fbc332 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 */
--
2.25.1
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