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hw/nand: Support multiple reads following READ STATUS 

After receiving READ STATUS command all subsequent IO reads should return
the status register value until another command is issued.

Signed-off-by: Juha Riihimäki <juha.riihimaki@nokia.com>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by:  Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
This commit is contained in:
Juha Riihimäki 2011-07-29 16:35:22 +01:00 committed by Andrzej Zaborowski
parent 48197dfa6a
commit d72245fbcf
1 changed files with 8 additions and 3 deletions
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11
hw/nand.c
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@ -496,9 +496,14 @@ uint32_t nand_getio(NANDFlashState *s)
for (offset = s->buswidth; offset--;) {
x |= s->ioaddr[offset] << (offset << 3);
}
s->addr += s->buswidth;
s->ioaddr += s->buswidth;
s->iolen -= s->buswidth;
/* after receiving READ STATUS command all subsequent reads will
* return the status register value until another command is issued
*/
if (s->cmd != NAND_CMD_READSTATUS) {
s->addr += s->buswidth;
s->ioaddr += s->buswidth;
s->iolen -= s->buswidth;
}
return x;
}