The goal of this patchserie is to offer access to MMC RPMB (Replay Protected Memory Block) partition. The RPMB partition is used in general to store some secure data. It is accessible through a trusted mechanism described in JEDEC standard JESD84-A441. This patchserie proposes following modifications: - detect RPMB capability and create RPMB block device if supported - extend MMC sysfs to provide access to RPMB partition size and reliable write sector count (information needed by user space to acces RPMB partition) - update IOCTL to support RPMB access. This includes automatic partition switch and sending of Set Block Count (CMD23) message. RPMB partition becomes accessible using standard IOCTL interface. Patches don't include trusted mechanism or any verification. It is user space or secure application responsability to provide the right command and the entire data frame as defined by JEDEC standard. --- Changes in v2: - Correction in patch 2: mmc: card: Do not scan RPMB partitions Remove GENHD_FL_EXT_DEVT flag Changes in v3: - Add acked-by and reviewed-by tags --- Loic Pallardy (5): mmc: core: Expose access to RPMB partition mmc: card: Do not scan RPMB partitions mmc: core: Extend sysfs to ext_csd parameters for RPMB support mmc: core: Add mmc_set_blockcount feature mmc: card: Add RPMB support in IOCTL interface Documentation/mmc/mmc-dev-attrs.txt | 7 ++++ drivers/mmc/card/block.c | 66 +++++++++++++++++++++++++++++++++++++ drivers/mmc/core/core.c | 14 ++++++++ drivers/mmc/core/mmc.c | 15 +++++++++ include/linux/mmc/card.h | 2 ++ include/linux/mmc/core.h | 2 ++ include/linux/mmc/mmc.h | 2 ++ 7 files changed, 108 insertions(+) -- 1.7.11.1 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
