u-boot.git/common/env_mmc.c, branch v2016.09

dm: env: mmc: Convert env_mmc to support CONFIG_BLK

2016-05-27T16:23:08+00:00

Update the MMC environment code so that it works with driver-model enabled
for block devices.

Signed-off-by: Simon Glass

dm: mmc: Use the new select_hwpart() API

2016-05-17T15:54:43+00:00

Avoid calling directly into the MMC code - use the new API call instead.

Signed-off-by: Simon Glass

env_mmc: support overriding mmc dev from board code

2016-01-25T15:39:46+00:00

This enables boards to choose where to/from the environment should be
saved/loaded. They can then for example support using the same device
(dynamically) from which the bootloader was launched to load and save
env data and do not have to define CONFIG_SYS_MMC_ENV_DEV statically.

In my use case, the environment needs to be on the same device I
booted from. It can be the eMMC or an optional SD card.
I therefore would override mmc_get_env_dev in the board code, read the
CPU registers to determine where we booted from and return the
corresponding device index.

Cc: Tom Rini 
Cc: Stephen Warren 
Cc: Tim Harvey 
Cc: Simon Glass 
Cc: Hans de Goede 

Signed-off-by: Clemens Gruber 
Reviewed-by: Stephen Warren 
Reviewed-by: Tom Rini

mmc: store hwpart in the block device

2016-01-14T02:05:19+00:00

This will allow us to have multiple block device structs each referring
to the same eMMC device, yet different HW partitions.

For now, there is still a single block device per eMMC device. As before,
this block device always accesses whichever HW partition was most recently
selected. Clients wishing to make use of multiple block devices referring
to different HW partitions can simply take a copy of this block device
once it points at the correct HW partition, and use each one as they wish.
This feature will be used by the next patch.

In the future, perhaps get_device() could be enhanced to return a
dynamically allocated block device struct, to avoid the client needing to
copy it in order to maintain multiple block devices. However, this would
require all users to be updated to free those block device structs at some
point, which is rather a large change.

Most callers of mmc_switch_part() wish to permanently switch the default
MMC block device's HW partition. Enhance mmc_switch_part() so that it does
this. This removes the need for callers to do this. However,
common/env_mmc.c needs to save and restore the current HW partition. Make
it do this more explicitly.

Replace use of mmc_switch_part() with mmc_select_hwpart() in order to
remove duplicate code that skips the call if that HW partition is already
selected.

Signed-off-by: Stephen Warren 
Reviewed-by: Tom Rini

block: pass block dev not num to read/write/erase()

2016-01-14T02:05:18+00:00

This will allow the implementation to make use of data in the block_dev
structure beyond the base device number. This will be useful so that eMMC
block devices can encompass the HW partition ID rather than treating this
out-of-band. Equally, the existence of the priv field is crying out for
this patch to exist.

Signed-off-by: Stephen Warren 
Reviewed-by: Tom Rini

Move ALLOC_CACHE_ALIGN_BUFFER() to the new memalign.h header

2015-09-11T21:15:20+00:00

Now that we have a new header file for cache-aligned allocation, we should
move the stack-based allocation macro there also.

Signed-off-by: Simon Glass

env_mmc: Properly prefix mmc errors with '!'

2015-08-28T16:33:14+00:00

The set_default_env() function from env_common.c expects either
a fully formatted error msg, e.g.: "## Resetting to default environment\n"
or an error msg prefixed with an !, in which case it will format it.

Fix the init_mmc_for_env() error messages to be prefixed with a !
this changes the bootup-log on sunxi when no mmc card is found from:

MMC:   SUNXI SD/MMC: 0
No MMC card foundIn:    serial
Out:   serial

To:

MMC:   SUNXI SD/MMC: 0
*** Warning - No MMC card found, using default environment

In:    serial
Out:   serial

Which clearly is how things should look.

Signed-off-by: Hans de Goede

env_mmc: add error message to pass to set_default_env

2015-05-27T17:35:54+00:00

Add an error message that gets passed to set_default_env() like
env_nand implements. This message is displayed to the user as the
reason for falling back to the default environment.

Signed-off-by: Tim Harvey

env_mmc: correct fini partition to match init partition

2014-10-03T14:26:50+00:00

The code to set the MMC partition uses an weak function to obtain the
correct partition number.  Use that instead of the compile-time default
when deciding whether it needs to switch back.

Fixes: 6e7b7df4df43574 ("env_mmc: support env partition setup in runtime")
Signed-off-by: Peter A. Bigot 
Acked-by: Dmitry Lifshitz 
Acked-by: Pantelis Antoniou

env_mmc: support env partition setup in runtime

2014-08-01T17:12:15+00:00

Add callback with __weak annotation to allow setup of environment
partition number in runtime from a board file.

Propagate mmc_switch_part() return value into init_mmc_for_env() instead
of -1 in case of failure.

Signed-off-by: Dmitry Lifshitz 
Signed-off-by: Igor Grinberg 
Acked-by: Pantelis Antoniou