08 Feb, 2014
3 commits
-
The open and close mmc sub-commands implement a hard-coded set of values
specific to the SMDK5250 platform. Remove these commands as what they
did can be done instead with a series of mmc dev / bootpart / bootbus
commands instead now.Cc: Amar
Cc: Minkyu Kang
Acked-by: Jaehoon Chung
Signed-off-by: Tom Rini
Signed-off-by: Pantelis Antoniou -
Add a bootbus sub-command to the mmc command to allow for setting
the boot_bus_width, reset_boot_bus_width and boot_mode fields of
BOOT_BUS_WIDTH (EXT_CSD[177]).Acked-by: Jaehoon Chung
Signed-off-by: Tom Rini
Signed-off-by: Pantelis Antoniou -
Add a partconf sub-command to the mmc command to allow for setting
the boot_ack, boot_partition and partition_access fields of
PARTITION_CONFIG (formerly BOOT_CONFIG, EXT_CSD[179]). Part of this
requires changing the check for 'part' from an strncmp to a strcmp, like
the rest of the sub-commands.Cc: Andy Fleming
Cc: Pantelis Antoniou
Acked-by: Jaehoon Chung
Signed-off-by: Tom Rini
Signed-off-by: Pantelis Antoniou
09 Jan, 2014
2 commits
-
The eMMC and the SD-Card specifications describe the optional SET_DSR command.
During measurements at our lab we found that some cards implementing this feature
having really strong driver strengts per default. This can lead to voltage peaks
above the specification of the host on signal edges for data sent from a card to
the host.Since availability of a given card type may be shorter than the time a certain
hardware will be produced it is useful to have support for this command (Alternative
would be changing termination resistors and adapting the driver strength of the
host to the used card.)Following proposal for an implementation:
- new field that reflects CSD field DSR_IMP in struct mmc
- new field for design specific DSR value in struct mmc
- board code can set DSR value in mmc struct just after registering an controller
- mmc_startup sends the the stored DSR value before selecting a card, if DSR_IMP is setAdditionally the mmc command is extended to make is possible to play around with different
DSR values.The concept was tested on a i.MX53 based platform using a Micron eMMC card where the default
DSR is 0x0400 (12mA) but in our design 0x0100 (0x0100) were enough. To use this feature for
instance on a mx53loco one have to add a call to mmc_set_dsr() in board_mmc_init() after
calling fsl_esdhc_initialize() for the eMMC.Signed-off-by: Markus Niebel
Acked-by: Pantelis Antoniou -
The spl_mmc_load() was removed while converting to
CONFIG_SPL_FRAMEWORK usage the definition was removed
but the declaration was missed. This patch removes this
declaration.Signed-off-by: Lad, Prabhakar
Acked-by: Pantelis Antoniou
31 Oct, 2013
1 commit
-
EXT_CSD_ERASE_GROUP_DEF is lost every time after a reset or
power off. Set it if device has enhanced partitions.Signed-off-by: Oliver Metz
Acked-by: Pantelis Antoniou
18 Sep, 2013
1 commit
-
When CONFIG_MMC_SPI is not enabled, the MMC_MODE_SPI capability can
never be set. However there is code in mmc.c which uses the
mmc_host_is_spi macro to check that capability & act accordingly. If we
expand that macro to 0 when CONFIG_MMC_SPI is not set (since it will
always be 0 at runtime anyway) then the compiler can optimize away the
SPI-specific code paths in mmc.c.Signed-off-by: Paul Burton
24 Jul, 2013
1 commit
-
Signed-off-by: Wolfgang Denk
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini
22 Jun, 2013
1 commit
19 Jun, 2013
1 commit
-
Conflicts:
spl/Makefile
14 Jun, 2013
1 commit
-
Enhance the MMC core to calculate the size of each MMC partition, and
update mmc->capacity whenever a partition is selected. This causes:mmc dev 0 1 ; mmcinfo
... to report the size of the currently selected partition, rather than
always reporting the size of the user partition.Signed-off-by: Stephen Warren
Signed-off-by: Andy Fleming
13 Jun, 2013
1 commit
-
This patch adds APIs to access(open / close) and to resize boot partiton of EMMC.
Signed-off-by: Amar
Signed-off-by: Minkyu Kang
07 May, 2013
1 commit
-
Most of time that MMC driver spends on initializing a device is polling
OCR (operation conditions register). To decouple this polling loop,
device init is split into two parts: The first part fires the OCR query
command, and the second part polls the result. So the caller is now no
longer bound to the OCR-polling delay; he may fire the query, go
somewhere and then come back later for the result.To use this, call mmc_set_preinit() on any device which needs this.
This can save significant amounts of time on boot (e.g. 200ms) by
hiding the MMC init time behind other init.Signed-off-by: Che-Liang Chiou
Signed-off-by: Simon Glass
Acked-by: Jaehoon Chung
Signed-off-by: Andy Fleming
02 May, 2013
1 commit
-
The number 512 appears quite a bit in the mmc code. Add a constant for this
so that it can be used here and in other parts of the code (e.g. SPL code
which loads from mmc).Signed-off-by: Simon Glass
Reviewed-by: Vadim Bendebury
17 Apr, 2013
2 commits
-
Support to check whether the SD3.0 or not.
Signed-off-by: Jaehoon Chung
Signed-off-by: Kyungmin Park
Tested-by: Rommel Custodio -
eMMC vesrion is supported up to v4.5.
But bootloader isn't saw the exact eMMC version.
After applied this patch,
if use the mmcinfo command, then can see the exactly mmc version.Signed-off-by: Jaehoon Chung
Signed-off-by: Kyungmin Park
Acked-by: Rommel Custodio
09 Mar, 2013
1 commit
-
Add generic mmc write protection functionality.
Signed-off-by: Nikita Kiryanov
Signed-off-by: Igor Grinberg
06 Sep, 2012
1 commit
-
Some eMMC devices contain boot partitions, but do not set the PART_SUPPORT
bit in EXT_CSD_PARTITIONING_SUPPORT. Allow partition selection on such
devices, by enabling partition switching when EXT_CSD_BOOT_MULT is set.Note that the Linux kernel enables access to boot partitions solely based
on the value of EXT_CSD_BOOT_MULT; EXT_CSD_PARTITIONING_SUPPORT only
influences access to "general" partitions.eMMC devices affected by this issue exist on various NVIDIA Tegra
platforms (and presumably many others too), such as Harmony (plug-in eMMC),
Seaboard, Springbank, and Whistler (plug-in eMMC).Signed-off-by: Stephen Warren
Signed-off-by: Andy Fleming
02 Sep, 2012
1 commit
-
Signed-off-by: Kaspter Ju
01 Sep, 2012
1 commit
-
DA850/OMAP-L138 does not support strict MMC/SD boot mode. SPL will
be in SPI flash and U-Boot image will be in MMC/SD card. SPL will
do the low level initialization and then loads the u-boot image
from MMC/SD card.Define CONFIG_SPL_MMC_LOAD macro in the DA850/OMAP-L138
configuration file to enable this feature.Tested-by: Christian Riesch
Signed-off-by: Lad, Prabhakar
Signed-off-by: Rajashekhara, Sudhakar
Signed-off-by: Hadli, Manjunath
09 May, 2012
2 commits
-
The outdated struct mmc_csd was only used by old atmel_mci driver which was
removed in c9abb4260c30fbfd51bb2cd551e7426e2ae15b66.Signed-off-by: Andreas Bießmann
cc: Andy Fleming -
This patch sets the MMC width according to the MMC host capabilities.
It turned out, that there are some targets (e.g. GONI), which are able
to read data from SPI only at 4 bit mode.
This patch restricts the width number according to the MMC host.Signed-off-by: Lukasz Majewski
Signed-off-by: Kyungmin Park
Cc: Andy Fleming
13 Mar, 2012
1 commit
-
gen_atmel_mci works on AVR32 as well, so no need to use the legacy
mmc driver. This also has the nice side effect of being able to use
SDHC cards an those boards.Signed-off-by: Sven Schnelle
Signed-off-by: Andreas Bießmann
16 Feb, 2012
1 commit
-
Align the card status polling with the Linux kernel and retry the
command at least five times. Also some cards apparently mishandle the
status bits, so make sure to check the card state too.Signed-off-by: Jan Kloetzke
Cc: Andy Fleming
09 Jan, 2012
2 commits
-
Check for card detect each time an MMC/SD device is initialized. If card
detection is not implemented, this code behaves as before and continues
assuming a card is present. If no card is detected, has_init is reset
for the MMC/SD device (to force initialization next time) and an error
is returned.Signed-off-by: Thierry Reding
Tested-by: Jason Liu -
The new API no longer uses the extra cd parameter that was used to store
the card presence state. Instead, this information is returned via the
function's return value. board_mmc_getcd() returns -1 to indicate that
no card-detection mechanism is implemented; 0 indicates that no card is
present and 1 is returned if it was detected that a card is present.The rationale for this change can be found in the following email
thread:http://lists.denx.de/pipermail/u-boot/2011-November/110180.html
In summary, the old API was not consistent with the rest of the MMC API
which always passes a struct mmc as the first parameter. Furthermore the
cd parameter was used to mean "card absence" in some implementations and
"card presence" in others.Signed-off-by: Thierry Reding
Tested-by: Jason Liu
03 Nov, 2011
1 commit
-
Previous magic number is hard to parse its meaning, change it to
respective macro definitionSigned-off-by: Lei Wen
Acked-by: WOlfgang Denk
16 Jul, 2011
2 commits
-
This patch provides handling of the two way handshake when SEND_OP_COND
(CMD1) is send to mmc card. It is necessary to inform eMMC card if the
host can work with high capacity cards (Jedec JESD84-A441, point 7.4.3).The extra flag MMC_MODE_HC (high capacity) is added to indicate if the
host is capable of handling the high capacity eMMC cards.Since this change is added to the generic mmc framework, then it requires
other boards to indicate if their mmc controllers can handle high capacity
cards. As it is now - the old behaviour of the framework is preserved.Signed-off-by: Lukasz Majewski
Signed-off-by: Andy Fleming -
Erase is a very basic function since the begin of sd specification is
announced. Although we could write a bulk of full 0xff memory to the
range to take place of erase, it is more convenient and safe to
implement the erase function itself.Signed-off-by: Lei Wen
Signed-off-by: Andy Fleming
Acked-by: Mike Frysinger
19 May, 2011
3 commits
-
For emmc, it may have up to 7 partitions: two boot partitions, one
user partition, one RPMB partition and four general purpose partitions.
(Refer to JESD84-A44.pdf/page 154)As bootloader may need to read out or reflashing images on those
different partitions, it is better to enable the partition switch with
console command support.Also for partition would be restore to user partition(part 0) when CMD0
is used, so change mmc_init routine to perform normal initialization
only once for each slot, unless use the rescan command to force init
again.Signed-off-by: Lei Wen
Acked-by: Andy Fleming -
mmc command applied device, like ide and usb...
Signed-off-by: Lei Wen
Acked-by: Andy Fleming -
A "send status" command is added with the commit "mmc: checking
status after commands with R1b response". But the status register
returned from send status command of SPI protocol is different from
that of MMC/SD protocol. We do a simple test and generate a response
in stead of full bit-by-bit translation.Signed-off-by: Thomas Chou
29 Apr, 2011
2 commits
-
Signed-off-by: Thomas Chou
-
Make existing field b_max field in struct mmc unconditional
and use it instead of CONFIG_SYS_MMC_MAX_BLK_COUNT in mmc_bread
and mmc_bwrite.Initialize b_max to CONFIG_SYS_MMC_MAX_BLK_COUNT in mmc_register
if it has not been initialized by the hw driver.Initialize b_max to 0 in all callers to mmc_register.
Signed-off-by: John Rigby
Signed-off-by: Andy Fleming
13 Apr, 2011
3 commits
-
The first SEND_OP_COND (CMD1) command added is used to ask card capabilities.
After it an AND operation is done between card capabilities and host
capabilities (at the moment only for the voltage field).
Finally the correct value is sent to the MMC, waiting that the card
exits from busy state.Signed-off-by: Raffaele Recalcati
Signed-off-by: Andy Fleming -
It is recommended to check card status after these kind of commands.
This is done using CMD13 (SEND_STATUS) JEDEC command until
the card is ready.
In case of error the card status field is displayed.Signed-off-by: Raffaele Recalcati
Signed-off-by: Andy Fleming -
This patch supports mmc/sd card with spi interface. It is based on
the generic mmc framework. It works with SDHC and supports multi
blocks read/write.The crc checksum on data packet is enabled with the def,
There is a subcomamnd "mmc_spi" to setup spi bus and cs at run time.
Signed-off-by: Thomas Chou
Signed-off-by: Andy Fleming
02 Feb, 2011
1 commit
-
Added support for MMC/SD cards for Davinci. This feature is enabled by
CONFIG_DAVINCI_MMC and is dependant on CONFIG_MMC and CONFIG_GENERIC_MMC
options. This is tested on DM355 and DM365 EVMs with both the available mmc
controllers.Signed-off-by: Alagu Sankar
Signed-off-by: Sandeep Paulraj
19 Dec, 2010
1 commit
-
After booting the u-boot, and first using some SD card (such as Sandisk 2G SD
card), because the field 'clock' of struct mmc is zero, this will cause
the read transfer is always active and SDHC DATA line is always active,
therefore, driver can't handle the next command.Therefore, we use mmc_set_clock to setup both the data structure and HW
to the initial clock speed of 400000Hz.Signed-off-by: Jerry Huang
Tested-by: Stefano Babic
Signed-off-by: Kumar Gala
03 Sep, 2010
1 commit
-
Signed-off-by: Reinhard Meyer
