SDIO_Enumerate 0 (changes)
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SDIODriver
» SWI Calls
» SDIO_Enumerate
» SDIO_Enumerate 0
SDIO_Enumerate 0
(SWI &59002)
| Entry | |
|---|---|
| R0 | 0 (reason code: enumerate slots) |
| R1 | 0 on first call, or preserved on subsequent calls |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | 0 if no more slots (R2 is not valid in this case), else the value to pass in R1 to next call |
| R2 | Bits 0 – 7 = slot number |
| Bits 8 – 15 = bus number | |
| Bit 16 set => slot contains only non-removable IO device(s) | |
| Bit 17 set => slot is removable but has non-functional card detect line | |
| Bit 18 set => slot contains non-removable memory devices(s) |
Use
This SWI is used to enable the caller to discover which slots are available.
Re-entrancy
This SWI is re-entrant.
Notes
None.
See also
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