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| author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-10-19 09:47:49 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-10-19 09:47:49 +0000 |
| commit | fc78c48e2094fe9d43aa4a73a4bf4f90d6ecf84b (patch) | |
| tree | 7893b9b0d0ce82021d3011507652e5ffcc564563 /EmbeddedPkg/Universal | |
| parent | f52be04a2f9d3ab597f54a1fe9fe0db7ade74775 (diff) | |
| download | edk2-fc78c48e2094fe9d43aa4a73a4bf4f90d6ecf84b.tar.gz edk2-fc78c48e2094fe9d43aa4a73a4bf4f90d6ecf84b.tar.bz2 edk2-fc78c48e2094fe9d43aa4a73a4bf4f90d6ecf84b.zip | |
EmbeddedPkg/MmcDxe: Ensure MMC is in Identification Mode
This change ensure the MMC card is in Identification Mode.
The card might be in Data Transfer Mode if a pre UEFI Boot Loader
had initialized the card.
A potential optimization would be to skip the Identification Mode
in this case.
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13872 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EmbeddedPkg/Universal')
| -rw-r--r-- | EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c b/EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c index e335e48c42..72e6d4c6d1 100644 --- a/EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c +++ b/EmbeddedPkg/Universal/MmcDxe/MmcBlockIo.c @@ -215,13 +215,12 @@ MmcIdentificationMode ( DEBUG((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcHwInitializationState\n"));
return Status;
}
- } else {
- //Note: Could even be used in all cases. But it looks this command could put the state machine into inactive for some cards
- Status = MmcHost->SendCommand (MmcHost, MMC_CMD0, 0);
- if (EFI_ERROR(Status)) {
- DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD0): Error\n"));
- return Status;
- }
+ }
+
+ Status = MmcHost->SendCommand (MmcHost, MMC_CMD0, 0);
+ if (EFI_ERROR(Status)) {
+ DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD0): Error\n"));
+ return Status;
}
Status = MmcNotifyState (MmcHostInstance, MmcIdleState);
|