For setting high speed in SD card,
First CMD 6 (Switch) is send to check if card supports High Speed and
Second command is send to switch card to high speed mode.
In current inplementation, CMD 6 was sent only once to switch the
card into HS mode without checking if card supports HS or not, which is
not as per specification and also we are not setting the HS i.e. 50000000
but directly asking the card to switch to 26000000 which is incorrect as
SD card supports either 25000000 or 50000000.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Jun Nie <jun.nie@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
ExtCSD structure may be read via DMA. So align it to
page to avoid data corruption.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jun Nie <jun.nie@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Make use of DMA to transfer multiple blocks at one time. It could
improve the performance on MMC/SD driver.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Add the interface to change the bus width and speed.
By default, MMC is initialized with 1-bit mode and less than 400KHz bus
clock. It causes MMC working inefficiently.
Set I/O bus width on both MMC controller and EXTCSD. Otherwise, it may
cause unmatched failure case. And support more timing mode, high speed,
HS200 & HS400 mode.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Declare fields in ECSD structure. And drop the original 128 words
arrary.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Since ECSD also describes the information of card, move it into
structure CardInfo.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
UEFI drivers should not depend on TimerLib. They should
use BS.Stall() instead.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Ronald Cron <Ronald.Cron@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17343 6f19259b-4bc3-4df7-8a09-765794883524
This attribute allows the EFI_MMC_HOST_PROTOCOL interface to manage
multiple instances in one driver.
EmbeddedPkg/MmcDxe: Add Revision attribute to the EFI_MMC_HOST_PROTOCOL
Note: The ARM PL180 and Omap35xx MMC host drivers has been updated.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12255 6f19259b-4bc3-4df7-8a09-765794883524
The MMC driver defaults to assume a card is not present. It then starts a timer in MmcDxeInitialize to check for card presence every 200ms.
However it does not immediately check to see if a card is present so if the EFI driver connection process occurs less than 200ms after the driver load, the connection process for partition
or filesystem drivers will fail because MediaPresent still is FALSE. To resolve this race condition, we need to immediately perform the presence check in the Start routine.
EmbeddedPkg/MmcDxe: Media ID Handling
Initialize the MMC device on Start or when presence changes instead of doing it on the Block IO calls. This way the layered drivers can be stopped and rebuilt with new Media IDs instead of
experiencing errors on calls to Block IO.
Proposed-by: Eugene Cohen (HP)
Reviewed-by: oliviermartin
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12237 6f19259b-4bc3-4df7-8a09-765794883524
In the former version, the check was done for every BlockIo operation.
By using a periodical function, we check less time in consequence performance
are better.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12128 6f19259b-4bc3-4df7-8a09-765794883524
The MMC controller might be ready for data but not be in a 'ready' state
to send or receive commands.
This fix waits for the MMC controller to be in the correct state.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11726 6f19259b-4bc3-4df7-8a09-765794883524
Meenakshi Aggarwal
Jun Nie
Haojian Zhuang
Olivier Martin
Ronald Cron
oliviermartin