Hi,
Does UEFI support writing of data to SD/MMC?
Am trying to write data to SD/MMC from UEFI application in beagleboard.
Observations:
1. If i try to write data using CMD24, MMCSendCommand() in MmcHostDxe responds with timeout error.
During debug, i found, CC bit in MMCHS_STAT is not set, instead BWR bit is set.
2. DMA should be enabled for CMD25 to work. But MmcHostDxe doesnot send commands through DMA and hence CMD25 also fails.
Is there any specific reason why write to SD/MMC is not supported in UEFI? Or is my understanding wrong?
Please suggest, how can i write data to SD/MMC from UEFI application.
Regards
Prasad
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