Commit graph

24 commits

Author SHA1 Message Date
Lei Wen
0560db18ec mmc: change magic number to macro define
Previous magic number is hard to parse its meaning, change it to
respective macro definition

Signed-off-by: Lei Wen <leiwen@marvell.com>
Acked-by: WOlfgang Denk <wd@denx.de>
2011-11-03 02:14:58 -05:00
Łukasz Majewski
b1f1e821d3 mmc: Access mode validation for eMMC cards > 2 GiB
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 <l.majewski@samsung.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2011-07-15 20:29:21 -05:00
Lei Wen
e6f99a5611 MMC: add erase function to both mmc and sd
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 <leiwen@marvell.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-07-15 20:29:17 -05:00
Lei Wen
bc897b1d4d mmc: enable partition switch function for emmc
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 <leiwen@marvell.com>
Acked-by: Andy Fleming <afleming@freescale.com>
2011-05-18 14:37:03 -05:00
Lei Wen
ea6ebe2177 cmd_mmc: eliminate device num in the mmc command
mmc command applied device, like ide and usb...

Signed-off-by: Lei Wen <leiwen@marvell.com>
Acked-by: Andy Fleming <afleming@freescale.com>
2011-05-18 14:36:35 -05:00
Thomas Chou
ed018b21d6 mmc_spi: generate response for send status command
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 <thomas@wytron.com.tw>
2011-05-18 14:30:34 -05:00
Thomas Chou
abe2c93ffb mmc: coding style fix and tabify of mmc.h
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
2011-04-29 03:22:17 -05:00
John Rigby
8feafcc49c MMC: make b_max unconditional
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 <john.rigby@linaro.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2011-04-29 03:21:54 -05:00
Raffaele Recalcati
31cacbabf0 mmc: SEND_OP_COND considers card capabilities (voltage)
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 <raffaele.recalcati@bticino.it>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2011-04-13 07:09:04 -05:00
Raffaele Recalcati
5d4fc8d907 mmc: checking status after commands with R1b response
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 <raffaele.recalcati@bticino.it>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2011-04-13 07:08:57 -05:00
Thomas Chou
d52ebf1022 mmc: add generic mmc spi driver
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 <thomas@wytron.com.tw>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2011-04-13 06:35:22 -05:00
Sandeep Paulraj
57418d2139 Davinci MMCSD Support
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 <alagusankar@embwise.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-02-02 00:54:44 +01:00
Jerry Huang
4a6ee172c3 fsl_esdhc: Use mmc_set_clock to set initial speed
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 <Chang-Ming.Huang@freescale.com>
Tested-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-12-18 23:15:21 +01:00
Reinhard Meyer
1592ef8596 AT91: MCI: add SD/MMC driver using mmc framework
Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
2010-09-03 11:19:01 +02:00
Steve Sakoman
89716964d9 mmc: add function prototype for mmc_set_dev in mmc.h
this eliminates compiler warnings when cmd_mmc.c is built with CONFIG_SYS_MMC_SET_DEV

the mmc_set_dev implementation in omap3_mmc.c is also tweaked to match
the new prototype in parameter naming and type

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-07-05 20:00:32 -04:00
Stefano Babic
11fdade294 MMC: add weak function to detect MMC/SD card
Most controllers can check if there is a card in the slot.
However, they require pins that could be not available because
required by other functions and the detection of a card must
be performed in another way. This patch adds a weak function
that a board can implement to add its internal custom way
to check the presence of a MMC/SD card.

Signed-off-by: Stefano Babic <sbabic@denx.de>
2010-03-07 12:36:36 -06:00
Albin Tonnerre
79b91de958 include/mmc.h: Fix typo in IS_SD() macro
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
2009-08-23 22:11:30 +02:00
Rabin Vincent
0b453ffe28 mmc: fix response decoding on little endian
The mmc code defines the response as an array of chars.  However, it
access the response bytes both as (i) an array of four uints (with
casts) and (ii) as individual chars.  The former case is used more
often, including by the driver when it assigns the response.

The char-wise accesses are broken on little endian systems because they
assume that the bytes in the uints are in big endian byte order.

This patch fixes this by changing the response to be an array of four
uints and replacing the char-wise accesses with equivalent uint-wise
accesses.

Signed-off-by: Rabin Vincent <rabin@rab.in>
2009-06-02 17:18:57 -05:00
Andy Fleming
272cc70b21 Add MMC Framework
Here's a new framework (based roughly off the linux one) for managing
MMC controllers.  It handles all of the standard SD/MMC transactions,
leaving the host drivers to implement only what is necessary to
deal with their specific hardware.

This also hooks the infrastructure into the PowerPC board code
(similar to how the ethernet infrastructure now hooks in)

Some of this code was contributed by Dave Liu <daveliu@freescale.com>

Signed-off-by: Andy Fleming <afleming@freescale.com>
2009-02-16 18:07:41 -06:00
Andy Fleming
1de97f9856 Eliminated arch-specific mmc header requirement
The current MMC infrastructure relies on the existence of an
arch-specific header file.  This isn't necessary, and a couple
drivers were forced to implement dummy files to meet this requirement.
Instead, we move the stuff in those header files into a more appropriate
place, and eliminate the stubs and the #include of asm/arch/mmc.h

Signed-off-by: Andy Fleming <afleming@freescale.com>
2009-02-16 18:07:41 -06:00
Andy Fleming
abb5466ccf Convert mmc_init to mmc_legacy_init
This is to get it out of the way of incoming MMC framework

Signed-off-by: Andy Fleming <afleming@freescale.com>
2009-02-16 18:07:40 -06:00
Andy Fleming
b2e2ed0233 Eliminate support for using MMC as memory
MMC cards are not memory, so we stop treating them that way.

Signed-off-by: Andy Fleming <afleming@freescale.com>
2009-02-16 18:07:40 -06:00
Haavard Skinnemoen
341188b9cc MMC: Consolidate MMC/SD command definitions
This moves the MMC and SD Card command definitions from
include/asm/arch/mmc.h into include/mmc.h. These definitions are
given by the MMC and SD Card standards, not by any particular
architecture.

There's a lot more room for consolidation in the MMC drivers which
I'm hoping to get done eventually, but this patch is a start.

Compile-tested for all avr32 boards as well as lpc2292sodimm and
lubbock. This should cover all three mmc drivers in the tree.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
2008-06-28 22:40:15 +02:00
wdenk
71f9511803 * Fix CONFIG_NET_MULTI support in include/net.h
* Patches by Kyle Harris, 13 Mar 2003:
  - Add FAT partition support
  - Add command support for FAT
  - Add command support for MMC
  ----
  - Add Intel PXA support for video
  - Add Intel PXA support for MMC
  ----
  - Enable MMC and FAT for lubbock board
  - Other misc changes for lubbock board
2003-06-15 22:40:42 +00:00