Commit graph

104 commits

Author SHA1 Message Date
Mario Schuknecht
786a27b7ec mmc: Fix mmc bus width
After setting the bus width, the extended CSD register is read. Some selected
fields are compared with previously read extended CSD register fields. In this
comparison the EXT_CSD_ERASE_GROUP_DEF field is compared. But this field is
previously written under certain circumstances. And then the comparison fails.

Only compare read-only fields. Therefore compare field EXT_CSD_HC_WP_GRP_SIZE
instead of field EXT_CSD_ERASE_GROUP_DEF.

Signed-off-by: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-10-03 17:26:50 +03:00
Peter Bigot
6dc93e7087 mmc: restore capacity when switching to partition 0
The capacity and lba for an MMC device with part_num 0 reflects the
whole device.  When mmc_switch_part() successfully switches to a
partition, the capacity is changed to that partition.  As partition 0
does not physically exist, attempts to switch back to the whole device
will indicate an error, but the capacity setting for the whole device
must still be restored to match the partition.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
Tested-by: Tom Rini <trini@ti.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-10-03 17:26:50 +03:00
Hannes Petermaier
021a80559f mmc: fix ERASE_GRP_DEF handling
if we set manually this bit on the eMMC card using mmc_switch(...),
we also have to set it within our (before read) internal structure
'ext_csd'.

Otherwise following checks on this will fail.

Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>
2014-10-03 17:26:49 +03:00
Jeroen Hofstee
750121c350 mmc: prevent some warnings with make W=1
Add missing prototypes for global functions and
make local functions static.

cc: panto@antoniou-consulting.com
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-07-18 17:53:24 -04:00
Jeroen Hofstee
cee9ab7cb6 dirvers: mmc: use __weak
use weak instead of alias to prevent some clang warnings.
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-07-18 17:53:23 -04:00
Stephen Warren
d4622df342 mmc: return meaningful error codes from mmc_select_hwpart
Rather than just returning -1 everywhere, try to return something
meaningful from mmc_select_hwpart(). Note that most other MMC functions
don't do this, including functions called from mmc_select_hwpart(), so
I'm not sure how effective this will be. Still, it's one less place with
hard-coded -1.

Suggested-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-06-12 14:15:59 +03:00
Albert ARIBAUD
cc49da249c Merge branch 'u-boot-samsung/master' into 'u-boot-arm/master' 2014-06-02 08:43:48 +02:00
Stephen Warren
d235628434 mmc: provide a select_hwpart implementation for get_device()
This enables specifying which eMMC HW partition to target for any U-Boot
command that uses the generic get_partition() function to parse its
command-line arguments.

Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2014-05-23 12:11:44 +03:00
Andrew Gabbasov
6b2221b008 mmc: Handle switch error status bit in MMC card status
MMC switch command for unsupported feature (e.g. bus width) sets a switch
error bit in card status. This bit should be checked, and, if it's set,
no access with new controller settings should be performed.

Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Signed-off-by: Andrew Gabbasov <andrew_gabbasov@mentor.com>
2014-05-23 11:34:33 +03:00
Mateusz Zalega
d803fea576 mmc: postponed needless timer initialization
mmc_init() doesn't call get_timer() anymore if MMC is already
initialized.

<panto> Minor formatting fix.

Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Signed-off-by: Mateusz Zalega <m.zalega@samsung.com>
2014-05-23 11:19:53 +03:00
Jaehoon Chung
d22e3d46a9 mmc: support the DDR mode for eMMC
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2014-05-16 14:54:26 +09:00
Jaehoon Chung
8caf46d189 mmc: remove the unnecessary define and fix the wrong bit control
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Lukasz Majeski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2014-05-16 14:54:26 +09:00
Tom Rini
33ace362fd mmc: Add 'mmc rst-function' sub-command
Some eMMC chips may need the RST_n_FUNCTION bit set to a non-zero value
in order for warm reset of the system to work.  Details on this being
required will be part of the eMMC datasheet.  Also add using this
command to the dra7xx README.

* Whitespace fix by panto

Signed-off-by: Tom Rini <trini@ti.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-04-02 13:02:58 +03:00
Pantelis Antoniou
93bfd61677 mmc: Split mmc struct, rework mmc initialization (v2)
The way that struct mmc was implemented was a bit of a mess;
configuration and internal state all jumbled up in a single structure.

On top of that the way initialization is done with mmc_register leads
to a lot of duplicated code in drivers.

Typically the initialization got something like this in every driver.

	struct mmc *mmc = malloc(sizeof(struct mmc));
	memset(mmc, 0, sizeof(struct mmc);
	/* fill in fields of mmc struct */
	/* store private data pointer */
	mmc_register(mmc);

By using the new mmc_create call one just passes an mmc config struct
and an optional private data pointer like this:

	struct mmc = mmc_create(&cfg, priv);

All in tree drivers have been updated to the new form, and expect
mmc_register to go away before long.

Changes since v1:

* Use calloc instead of manually calling memset.
* Mark mmc_register as deprecated.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-03-24 12:58:56 +02:00
Pantelis Antoniou
ab769f227f mmc: Remove ops from struct mmc and put in mmc_ops
Remove the in-structure ops and put them in mmc_ops with
a constant pointer to it.

This makes the mmc structure smaller as well as conserving
code space (in theory).

All in-tree drivers are converted as well; this is done in a
single patch in order to not break git bisect.

Changes since V1:
Fix compilation b0rked issue on omap platforms where OMAP_GPIO was
not set.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-03-24 11:32:10 +02:00
Tom Rini
614b2bf1c9 cmd_mmc.c: Drop open/close mmc sub-commands
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 <amarendra.xt@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Tom Rini <trini@ti.com>
Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-02-07 18:17:49 +02:00
Tom Rini
5a99b9de1a cmd_mmc.c: Add bootbus mmc sub-command
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 <jh80.chung@samsung.com>
Signed-off-by: Tom Rini <trini@ti.com>
Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-02-07 18:17:49 +02:00
Tom Rini
792970b0a3 cmd_mmc.c: Add 'partconf' command to mmc
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 <afleming@gmail.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Tom Rini <trini@ti.com>
Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-02-07 18:17:49 +02:00
Stephen Warren
def816a2ba mmc: set rca to 1 for MMC cards
U-Boot currently sets MMC cards' RCA register to 0. This value is
reserved according to the specification. Use a value of 1 instead, just
like the Linux kernel.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-02-07 17:34:06 +02:00
Markus Niebel
ab71188ce8 mmc: add setdsr support
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 set

Additionally 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 <Markus.Niebel@tqs.de>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-01-09 11:47:51 +02:00
Oliver Metz
1937e5aa3b mmc: Fix erase_grp_size for partitioned card
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 <oliver@freetz.org>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2013-10-31 09:55:33 +02:00
Paul Burton
da61fa5f42 mmc: don't support write & erase for SPL builds
For SPL builds this is just dead code since we'll only need to read.
Eliminating it results in a significant size reduction for the SPL
binary, which may be critical for certain platforms where the binary
size is highly constrained.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2013-09-20 18:58:55 +03:00
Paul Burton
5619682664 mmc: don't call *printf or puts when SPL & !CONFIG_SPL_LIBCOMMON_SUPPORT
If we don't have CONFIG_SPL_LIBCOMMON_SUPPORT defined then stdio
& *printf functions are unavailable & calling them will cause a link
failure.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2013-09-17 20:03:44 +03:00
Oleksandr Tyshchenko
c30054ba94 mmc: Remove unused variable backup from mmc_send_cmd()
Do not call a memset for unused variable backup every time.
Remove unused variable from function.

Signed-off-by: Oleksandr Tyshchenko <oleksandr.tyshchenko@ti.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2013-09-17 20:03:44 +03:00
Ying Zhang
bb0dc1084f powerpc: mpc85xx: Support booting from SD Card with SPL
The code from the internal on-chip ROM. It loads the final uboot image
into DDR, then jump to it to begin execution.

The SPL's size is sizeable, the maximum size must not exceed the size of L2
SRAM. It initializes the DDR through SPD code, and copys final uboot image
to DDR. So there are two stage uboot images:
	* spl_boot, 96KB size. The env variables are copied to L2 SRAM, so that
	ddr spd code can get the interleaving mode setting in env. It loads
	final uboot image from offset 96KB.
	* final uboot image, size is variable depends on the functions enabled.

Signed-off-by: Ying Zhang <b40530@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
2013-08-20 09:47:26 -07:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Sascha Silbe
ff8fef5666 Fix block device accesses beyond 2TiB
With CONFIG_SYS_64BIT_LBA, lbaint_t gets defined as a 64-bit type,
which is required to represent block numbers for storage devices that
exceed 2TiB (the block size usually is 512B), e.g. recent hard drives.

For some obscure reason, the current U-Boot code uses lbaint_t for the
number of blocks to read (a rather optimistic estimation of how RAM
sizes will evolve), but not for the starting address. Trying to access
blocks beyond the 2TiB boundary will simply wrap around and read a
block within the 0..2TiB range.

We now use lbaint_t for block start addresses, too. This required
changes to all block drivers as the signature of block_read(),
block_write() and block_erase() in block_dev_desc_t changed.

Signed-off-by: Sascha Silbe <t-uboot@infra-silbe.de>
2013-06-26 10:26:06 -04:00
Tom Rini
348e47f766 Merge branch 'master' of git://git.denx.de/u-boot-arm 2013-06-22 07:38:12 -04:00
Albert ARIBAUD
69f14dc2fd Merge branch 'u-boot-samsung/master' into 'u-boot-arm/master'
Conflicts:
	spl/Makefile
2013-06-19 12:53:59 +02:00
Stephen Warren
f866a46d6e mmc: report capacity for the selected partition
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 <swarren@nvidia.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-06-13 16:52:19 -05:00
Ruud Commandeur
a586c0aa21 mmc write bug fix
This patch fixes a bug related to mmc writes.

When doing fatwrites on an SD-Card, MMC bus problems can occur. Depending
on the size of the file, "MMC0: Bus busy timeout!" is reported, resulting
in an SD-Card that is no longer responding.
It appears to be, that set_cluster can be called with a size being zero.
That can be with a file that has a size being an exact multiple
(including 0) of the clustersize, but also for files that are smaller than
the size of one cluster.
The same problem occurs if the "mmc write" command is given with a block
count being 0.

By adding a check for the block count being zero in mmc_write_blocks
(drivers/mmc.c), this problem is solved.

Signed-off-by: Ruud Commandeur <rcommandeur@clb.nl>
Cc: Tom Rini <trini@ti.com>
Cc: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Mats Karrman <Mats.Karrman@tritech.se>
Cc: Andy Fleming <afleming@gmail.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-06-13 16:46:57 -05:00
Amar
3690d6d66b MMC: APIs to support resize of EMMC boot partition
This patch adds APIs to access(open / close) and to resize boot partiton of EMMC.

Signed-off-by: Amar <amarendra.xt@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-06-13 17:35:14 +09:00
Che-Liang Chiou
e95504497e mmc: Split device init to decouple OCR-polling delay
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 <clchiou@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-05-06 16:12:38 -05:00
Egbert Eich
0472fbfd32 part/dev_desc: Add log2 of blocksize to block_dev_desc data struct
log2 of the device block size serves as the shift value used to calculate
the block number to read in file systems when implementing avaiable block
sizes.
It is needed quite often in file systems thus it is pre-calculated and
stored in the block device descriptor.

Signed-off-by: Egbert Eich <eich@suse.com>
2013-05-01 16:24:02 -04:00
Simon Glass
8bfa195e4e mmc: Define a constant for the maximum block size
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 <sjg@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@google.com>
2013-05-01 16:24:01 -04:00
Jaehoon Chung
1741c64d64 mmc: check the revision for sd3.0
Support to check whether the SD3.0 or not.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Tested-by: Rommel Custodio <sessyargc@gmail.com>
2013-04-17 10:58:51 -04:00
Jaehoon Chung
64f4a6192f mmc: support the correct card version for eMMC
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 <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Rommel Custodio <sessyargc@gmail.com>
2013-04-17 10:58:51 -04:00
Peter Korsgaard
d4e1da4e09 mmc: mmc_getcd/getwp: use sensible defaults
Let mmc_getcd() return true and mmc_getwp() false if mmc driver doesn't
provide handlers for them.

Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
[trini: Add braces around first if test in each case to fix warning]
Signed-off-by: Tom Rini <trini@ti.com>
2013-03-24 12:49:12 -04:00
Nikita Kiryanov
d23d8d7e06 mmc: add support for write protection
Add generic mmc write protection functionality.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
2013-03-08 16:41:13 -05:00
Andy Fleming
7798f6dbd5 mmc: Properly determine maximum supported bus width
At some point, a confusion arose about the use of the bit
definitions in host_caps for bus widths, and the value
in ext_csd. By coincidence, a simple shift could convert
between one and the other:

MMC_MODE_1BIT = 0, EXT_CSD_BUS_WIDTH_1 = 0
MMC_MODE_4BIT = 0x100, EXT_CSD_BUS_WIDTH_4 = 1
MMC_MODE_8BIT = 0x200, EXT_CSD_BUS_WIDTH_8 = 2

However, as host_caps is a bitmask of supported things,
there is not, in fact, a one-to-one correspondence. host_caps
is capable of containing MODE_4BIT | MODE_8BIT, so nonsensical
things were happening where we would try to set the bus width
to 12.

The new code clarifies the very different namespaces:

host_caps/card_caps = bitmask (MMC_MODE_*)
ext CSD fields are just an index (EXT_CSD_BUS_WIDTH_*)
mmc->bus_width integer number of bits (1, 4, 8)

We create arrays to map between the namespaces, like in Linux.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
2012-11-27 17:48:46 -06:00
Taylor Hutt
babce5f64e mmc: Fix interpretation of MMC_CMD_ALL_SEND_CID
The interpretation of the data returned by the MMC_CMD_ALL_SEND_CID
command was incorrect with respect to the JEDEC Standard No. 84-A441.

This change makes the interpretation correct with respect to the
defined fields of the CID register.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Taylor Hutt <thutt@chromium.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-11-27 17:26:47 -06:00
Kim Phillips
fdbb873eb0 drivers/mmc/mmc.c: sparse fixes
mmc.c:137:5: warning: symbol 'mmc_send_cmd' was not declared. Should it be static?
mmc.c:203:5: warning: symbol 'mmc_send_status' was not declared. Should it be static?
mmc.c:247:5: warning: symbol 'mmc_set_blocklen' was not declared. Should it be static?
mmc.c:440:5: warning: symbol 'mmc_read_blocks' was not declared. Should it be static?
mmc.c:510:5: warning: symbol 'mmc_go_idle' was not declared. Should it be static?
mmc.c:532:1: warning: symbol 'sd_send_op_cond' was not declared. Should it be static?
mmc.c:597:5: warning: symbol 'mmc_send_op_cond' was not declared. Should it be static?
mmc.c:661:5: warning: symbol 'mmc_send_ext_csd' was not declared. Should it be static?
mmc.c:683:5: warning: symbol 'mmc_switch' was not declared. Should it be static?
mmc.c:705:5: warning: symbol 'mmc_change_freq' was not declared. Should it be static?
mmc.c:775:5: warning: symbol 'sd_switch' was not declared. Should it be static?
mmc.c:796:5: warning: symbol 'sd_change_freq' was not declared. Should it be static?
mmc.c:935:6: warning: symbol 'mmc_set_ios' was not declared. Should it be static?
mmc.c:953:6: warning: symbol 'mmc_set_bus_width' was not declared. Should it be static?
mmc.c:1108:26: warning: dubious: !x & y
mmc.c:960:5: warning: symbol 'mmc_startup' was not declared. Should it be static?
mmc.c:1243:5: warning: symbol 'mmc_send_if_cond' was not declared. Should it be s

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2012-11-04 11:00:37 -07:00
Marek Vasut
49a627f8a1 MMC: Remove the MMC bounce buffer
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Andy Fleming <afleming@freescale.com>
Cc: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-10-22 02:53:35 -05:00
Benoît Thébaudeau
6bb4b4bc35 mmc_get_dev: Return error if mmc_init fails
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Andy Fleming <afleming@gmail.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-09-05 17:32:42 -05:00
Stephen Warren
8948ea8302 mmc: detect boot sectors using EXT_CSD_BOOT_MULT too
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 <swarren@nvidia.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-09-05 17:32:41 -05:00
Mikhail Kshevetskiy
122efd4389 MMC: u-boot-spl may be compiled without partition support
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@gmail.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-09-05 17:32:41 -05:00
Yoshihiro Shimoda
cdfd1ac6df mmc: fix capacity calculation when EXT_CSD_SEC_CNT is used
Since the type of "ext_csd" was array of char, the following
calculation might fail when the value of ext_csd[EXT_CSD_SEC_CNT]
was minus.

	capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
			| ext_csd[EXT_CSD_SEC_CNT + 1] << 8
			| ext_csd[EXT_CSD_SEC_CNT + 2] << 16
			| ext_csd[EXT_CSD_SEC_CNT + 3] << 24;

So, this patch changes the type of "ext_csd" to array of u8.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-09-05 17:32:41 -05:00
Jongman Heo
5b0c942f89 mmc: fix wrong timeout check in mmc_send_status()
(!timeout) condition check in mmc_send_status() can never be met,
because do-while loop ends up with negative timeout value, -1.

Fix the check to handle TIMEOUT case correctly.

Signed-off-by: Jongman Heo <jongman.heo@gmail.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-09-05 17:32:41 -05:00
Kaspter Ju
67cbbf25c5 mmc: Remove unused item flags in struct mmc_cmd
Signed-off-by: Kaspter Ju <nigh0st3018@gmail.com>
2012-09-02 16:56:17 +02:00
Jerry Huang
d2d8afae33 SD/MMC: check the card status during erase operation
Use the function 'mmc_send_status' to check the card status.
only when the card is ready, driver can send the next erase command
to the card, otherwise, the erase will failed:
=> mmc erase 0 1
MMC erase: dev # 0, block # 0, count 1 ... 1 blocks erase: OK
=> mmc erase 0 2
MMC erase: dev # 0, block # 0, count 2 ... mmc erase failed
1 blocks erase: ERROR
=> mmc erase 0 4
MMC erase: dev # 0, block # 0, count 4 ... mmc erase failed
1 blocks erase: ERROR

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
CC: Andy Fleming <afleming@gmail.com>
CC: Marek Vasut <marex@denx.de>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2012-07-13 17:04:50 -05:00