Implements the alternative boot operation for eMMCs.
Note the limitations of the help.
This is mostly useful for testing purposes if you set
up the boot partition configuration correctly.
Usage:
$ sudo dd if=/dev/mmcblk2boot0 of=bootdatammcblk count=2
2+0 records in
2+0 records out
1024 bytes (1.0 kB, 1.0 KiB) copied, 0.00482308 s, 212 kB/s
$ sudo ./mmc boot_operation bootdata /dev/mmcblk2
$ diff -s bootdata bootdatammcblk
Files bootdata and bootdatammcblk are identical
Signed-off-by: Christian Loehle <cloehle@hyperstone.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/f999a7ed7bb645948ac74d5d5341e913@hyperstone.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
We can use GEN_CMD (CMD56) to read a data block with vendor-specific
format and meaning, which is very helpful and useful for customers to
analyze device health. This patch is to add support for this command.
At the same time, in order to make CMD56 universal, let more users of
mmc-utils can benefit from this. We will allow the user to enter [arg]
for special commands. Because some eMMC vendors provide an additional
set of commands beyond the GEN_CMD (CMD56) definition in the JEDEC
specification. These additional commands are implemented using generic
CMD56 commands, and they return a wealth of useful information about the
state of the NAND device. For these special purposes, the [31:1]stuff
bits in the CMD56 argument are used. You can refer to Micron eMMC
"TN-FC-32: e·MMC Device Health Report" as an example.
I didn't add data parsing, just print the raw data as it is vendor-specific.
Signed-off-by: Bean Huo <beanhuo@micron.com>
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Tested-by: Rossler Jakob (Nokia - DE/Ulm) <jakob.rossler@nokia.com>
Link: https://lore.kernel.org/r/20220417111622.621650-1-huobean@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
we have been using this erase feature for a while, but it is
still not merged into the upstream mmc-utils. Especially, for
the customer, every time when they update the mmc-utils, they
should re-install this patch again, let's try to make this
erase command upstreamed in the mmc-utils.
We need to send 3 MMC commands and it is important that they
stay in sequence. Therefore we are using MMC_IOC_MULTI_CMD.
Co-developed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Kimito Sakata <kimito.sakata@oracle.com>
Reviewed-by: Kenneth Gibbons <kenny.gibbons@oracle.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20210506191041.1178-1-oracleks043021@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add commands to get and set write protect modes for the specified
areas of the user partition. The ability to set permanent write
protect is #ifdef'd with "DANGEROUS_COMMANDS_ENABLED" because
it has the ability to make the eMMC device and possibly the system
permanently unusable.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Signed-off-by: Chris Ball <chris@printf.net>
Adding support for field firmware update over multiple command ioctl.
As multiple command ioctl is supported only from kernel 4.4, this patch
should be used against kernel 4.4 and above.
Known issues:
- There is no support for Multiple Block write commands (CMD25) in existing
IOCTL implementation
- In case MODE_OPERATION_CODES field is not supported by the device
manual reset of the device/platform is required.
The reset issue discussed in another email thread - " [RFC 0/6] mmc:
Field Firmware Update"
Signed-off-by: Yaniv Agman <yaniv.agman@sandisk.com>
Signed-off-by: Avi Shchislowski <avi.shchislowski@sandisk.com>
Signed-off-by: Chris Ball <chris@printf.net>
The lsmmc tools contains an extensive parser of the CID, CSD, SCR
registers from userspace. The utility works as-is and uses sysfs
to read the register values.
The original code is created by Sebastian Rasmussen and still lives
in an attachment in the mail archive of linux-mmc. It need to be merged
into mmc-utils repository, which is convenient for testing MMC device
from userspace.
Change since v3:
- Remove the unused EXT_CSD parser in lsmmc.c file.
Signed-off-by: Sebastian Rasmussen <sebras@gmail.com>
Signed-off-by: Chris Ball <chris@printf.net>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
The MMC4.5 specification added an optional cache for eMMC devices.
This change will add the ability to enable/disable the cache.
Signed-off-by: Al Cooper <acooperx@gmail.com>
Signed-off-by: Chris Ball <chris@printf.net>
This was added because some eMMC devices had the boot bus conditions
set incorrectly causing them to hang on boot.
Signed-off-by: Al Cooper <acooperx@gmail.com>
Signed-off-by: Chris Ball <chris@printf.net>
create gp partition if needed with enhanced / extended attribute.
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
mmc rpmb write-key <rpmb device> <key file>
Program authentication key which is 32 bytes length and stored in the specified file.
Also you can specify '-' instead of key file path and utility will read the key from stdin.
BEWARE: key can be programmed only once!
Example:
$ echo -n AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHH | mmc rpmb write-key /dev/mmcblk0rpmb -
mmc rpmb read-counter <rpmb device>
Counter value for the <rpmb device> will be read to stdout.
mmc rpmb read-block <rpmb device> <address> <blocks count> <output file> [key file]
Blocks of 256 bytes will be read from <rpmb device> to output file or stdout if '-'
is specified instead of regular path. If key is specified - read data will be verified.
Instead of regular path you can specify '-' and key will be read from stdin.
Example:
$ echo -n AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHH | \
mmc rpmb read-block /dev/mmcblk0rpmb 0x02 2 /tmp/block -
or read the block without verification
$ mmc rpmb read-block /dev/mmcblk0rpmb 0x02 2 /tmp/block
mmc rpmb write-block <rpmb device> <address> <256 byte data file> <key file>
Block of 256 bytes will be written from data file to <rpmb device>.
Also you can specify '-' instead of key file path or data file and utility will read the
data from stdin.
Example:
$ (awk 'BEGIN {while (c++<256) printf "a"}' | echo -n AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHH) | \
mmc rpmb write-block /dev/mmcblk0rpmb 0x02 - -
Signed-off-by: Roman Pen <r.peniaev@gmail.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
Cc: Ben Gardiner <bengardiner@nanometrics.ca>,
Signed-off-by: Chris Ball <chris@printf.net>
This patch adds a method to trigger Sanitize command to MMC.
The Sanitize command is used for deleting the unmapped memory region
of the MMC device.
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Acked-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
This patch added the method to enable the bkops.
In ext_csd register, BKOPS_EN bit is one-time programable.
So if you want to use the bkops, use the this command.
$ mmc bkops enable /dev/mmcblk0
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewd-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This adds a new option to enable the boot from eMMC
by writing to the 179 ext_csd register.
The example below shows as to enable the mmcblk0boot0
partition and also set/reset the ACK bit).
$ ./mmc bootpart enable 1 1 /dev/mmcblk0boot0
$ ./mmc extcsd read /dev/mmcblk0boot0 | grep PARTITION_CON
Boot configuration bytes [PARTITION_CONFIG: 0x49]
Reported-by: Youssef TRIKI <youssef.triki@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This leaves "extcsd read" pointing to Giuseppe's code. Also, abstract
out the writeprotect code so that there's only one shared implementation
in print_writeprotect_status(), used by both "extcsd read" and
"writeprotect get".
Signed-off-by: Chris Ball <cjb@laptop.org>
rich
Christian Löhle
Bean Huo
Kimito Sakata
Al Cooper
Avi Shchislowski
Sebastian Rasmussen
Al Cooper
Balaji T K
Roman Peniaev
Ben Gardiner
Ben Gardiner
Yaniv Gardi
Chris Ball
Jaehoon Chung
Saugata Das
Giuseppe CAVALLARO
Johan RUDHOLM