Regarding v5.0: a while ago, Romain wrote a small eMMC 5.0 patch that
Ulf ack'd:
http://comments.gmane.org/gmane.linux.kernel.mmc/23795
But this patch got lost and was never merged. I wanted to re-submit on
Romain's behalf but haven't been able to find the time. Perhaps you
could take this task?
I have verified that this patch is necessary for my Jedec 5.0 hardware.
Thanks,
Derek
On 11/06/2014 07:41 AM, Avi Shchislowski wrote:
The Field Firmware Update (FFU) feature is new for eMMC 5.0 spec (Jedec:
JESD84-B50.pdf)
http://www.jedec.org/standards-documents/technology-focus-areas/flash-
memory-ssds-ufs-emmc/e-mmc
*New ioctl has been add:
* [Alex Lemberg] "MMC_FFU_INVOKE - transfer the new Firmware data from user spac[Alex Lemberg]space
to the eMMC deivce and install the new image[Alex Lemberg] firmware.
* This solution allows to:
- Complete eMMC 5.0 FFU procedure as an atomic operation, without being interrupted by other IO requests
- Not limited Firmware data size. Using Multiple Write operations.
- Support of both EXT_CSD_MODE_OPERATION_CODES modes [Alex Lemberg]
* The solution is using "udev" device manager to transfer FW data from user space to eMMC driver [Alex Lemberg]
* Pre-existing functions from mmc_test were used in this solution.
Signed-off-by: Avi Shchislowski <avi.shchislowski@xxxxxxxxxxx>
Signed-off-by: Alex Lemberg <alex.lemberg@xxxxxxxxxxx>
Avi Shchislowski (3):
mmc: add eMMC5.0 ffu ext_csd fields
mmc: Support FFU for eMMC v5.0 1/2
mmc: Support FFU for eMMC v5.0 2/2
drivers/mmc/card/Kconfig | 8 +
drivers/mmc/card/block.c | 5 +
drivers/mmc/card/mmc_test.c | 97 +--------
drivers/mmc/core/Makefile | 1 +
drivers/mmc/core/core.c | 128 ++++++++++++
drivers/mmc/core/mmc.c | 9 +
drivers/mmc/core/mmc_ffu.c | 487 +++++++++++++++++++++++++++++++++++++++++++
include/linux/mmc/card.h | 2 +
include/linux/mmc/core.h | 30 +++
include/linux/mmc/mmc.h | 9 +
10 files changed, 690 insertions(+), 86 deletions(-) create mode 100644 drivers/mmc/core/mmc_ffu.c
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