2013/3/7 Peter Crosthwaite <peter.crosthwa...@xilinx.com>: > Hi Kuo Jung, Peter, > > This patch fixes bugs for us in Zynq Nand (cc Wendy Liang). Can we get > a cherry pick of this? >
Why not? Please go ahead. > Regards, > Peter > > On Wed, Mar 6, 2013 at 5:27 PM, Kuo-Jung Su <dant...@gmail.com> wrote: >> The BIT6 of Status Register(SR): >> >> SR[6] behaves the same as R/B# pin >> SR[6] = 0 indicates the device is busy; >> SR[6] = 1 means the device is ready >> >> Some NAND flash controller (i.e. ftnandc021) relies on the SR[6] >> to determine if the NAND flash erase/program is success or error timeout. >> >> P.S: >> The exmaple NAND flash datasheet could be found at following link: >> http://www.mxic.com.tw/QuickPlace/hq/PageLibrary4825740B00298A3B.nsf/h_Index/8FEA549237D2F7674825795800104C26/$File/MX30LF1G08AA,%203V,%201Gb,%20v1.1.pdf >> >> Signed-off-by: Kuo-Jung Su <dant...@gmail.com> > > Reviewed-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com> > >> --- >> hw/nand.c | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) >> >> diff --git a/hw/nand.c b/hw/nand.c >> index 4a71265..61e918f 100644 >> --- a/hw/nand.c >> +++ b/hw/nand.c >> @@ -46,7 +46,7 @@ >> # define NAND_IOSTATUS_PLANE1 (1 << 2) >> # define NAND_IOSTATUS_PLANE2 (1 << 3) >> # define NAND_IOSTATUS_PLANE3 (1 << 4) >> -# define NAND_IOSTATUS_BUSY (1 << 6) >> +# define NAND_IOSTATUS_READY (1 << 6) >> # define NAND_IOSTATUS_UNPROTCT (1 << 7) >> >> # define MAX_PAGE 0x800 >> @@ -231,6 +231,7 @@ static void nand_reset(DeviceState *dev) >> s->iolen = 0; >> s->offset = 0; >> s->status &= NAND_IOSTATUS_UNPROTCT; >> + s->status |= NAND_IOSTATUS_READY; >> } >> >> static inline void nand_pushio_byte(NANDFlashState *s, uint8_t value) >> -- >> 1.7.9.5 >> >> -- Best wishes, Kuo-Jung Su
