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MdeModulePkg/SdMmcHcDxe: Implement revision 3 of SdMmcOverrideProtocol

Browse Source 
https://bugzilla.tianocore.org/show_bug.cgi?id=1882

Implement support for GetOperatingParamters notify phase
in SdMmcHcDxe driver. GetOperatingParameters notify phase
is signaled before we start card detection and initialization.
Code has been updated for both eMMC and SD card controllers to
take into consideration those new parameters. Initialization process
has been divided into 2 steps. In the first step we bring the link
up to the point where we can get card identification data(Extended
CSD in eMMC case and SWITCH command response in SD card case). This
data is later used along with controller capabilities and operating
parameters passed in GetOperatingParameters phase to choose preferred
bus settings in GetTargetBusSettings function. Those settings are later
on to start bus training to high speeds. If user passes incompatible
setting with selected bus timing driver will assume it's standard behavior
with respect to that setting. For instance if HS400 has been selected as a
target bus timing due to card and controller support bus width setting of
4 and 1 bit won't be respected and 8 bit setting will be chosen instead.

Tests on Marvell boards were also performed by Marcin Wojtas
<mw@semihalf.com>:

https://edk2.groups.io/g/devel/message/42999

Board 1 (out of tree): SD - OK, MMC - OK
Board 2: (Armada80x0McBin): SD - OK, MMC - OK
Board 3: (Armada70x0Db): SD - problems, MMC - OK

Please note that the problem on Armada70x0Db SD devices are introduced by
adding new types of SD bus modes, a subsequent patch within edk2-platforms
repository will be proposed to address it.
(More details can be referred from the above link.)

Signed-off-by: Mateusz Albecki <mateusz.albecki@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
Regression-tested-by: Sumit Garg <sumit.garg@linaro.org>
This commit is contained in:
Albecki, Mateusz
2019-06-26 21:10:03 +08:00
committed by Hao A Wu
parent f56cc67f62
commit adec1f5deb
6 changed files with 827 additions and 244 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdMmcPciHci.c
View File

@@ -1339,6 +1339,40 @@ SdMmcHcUhsSignaling (
return EFI_SUCCESS;
}
/**
Set driver strength in host controller.
@param[in] PciIo The PCI IO protocol instance.
@param[in] SlotIndex The slot index of the card.
@param[in] DriverStrength DriverStrength to set in the controller.
@retval EFI_SUCCESS Driver strength programmed successfully.
@retval Others Failed to set driver strength.
**/
EFI_STATUS
SdMmcSetDriverStrength (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT8 SlotIndex,
IN SD_DRIVER_STRENGTH_TYPE DriverStrength
)
{
EFI_STATUS Status;
UINT16 HostCtrl2;
if (DriverStrength == SdDriverStrengthIgnore) {
return EFI_SUCCESS;
}
HostCtrl2 = (UINT16)~SD_MMC_HC_CTRL_DRIVER_STRENGTH_MASK;
Status = SdMmcHcAndMmio (PciIo, SlotIndex, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
if (EFI_ERROR (Status)) {
return Status;
}
HostCtrl2 = (DriverStrength << 4) & SD_MMC_HC_CTRL_DRIVER_STRENGTH_MASK;
return SdMmcHcOrMmio (PciIo, SlotIndex, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);
}
/**
Turn on/off LED.