Re: [flashrom] [PATCH 3/8] generify spi_rdid to allow passing different opcodes. This is needed to add support for Atmel's AT25F series.

[Stefan Tauner]

On Thu, 31 Mar 2011 08:40:26 +0200
Carl-Daniel Hailfinger  wrote:
> Am 15.03.2011 16:29 schrieb Stefan Tauner:
> > Signed-off-by: Stefan Tauner
>
> Not sure about this one. We also have separate functions for each erase 
> command.
>
> I'll let others comment.

wont happen, i guess. :)
i have removed that now, because you said in the at25f patch itself,
that i should move the probing to at25.c and remove the special case
for the at25f in the generalized rdid... which was the main reason why i
introduced it in the first place. i'll leave this as New on patchwork
for further reference.
> > spi25.c |   24 ++++++++++++------------
> >   1 files changed, 12 insertions(+), 12 deletions(-)
> >
> > diff --git a/spi25.c b/spi25.c
> > index 5d73411..c4cd6b2 100644
> > --- a/spi25.c
> > +++ b/spi25.c
> > @@ -31,17 +31,17 @@
> >
> > void spi_prettyprint_status_register(struct flashchip *flash);
> >
> > -static int spi_rdid(unsigned char *readarr, int bytes)
> > +static int spi_rdid(unsigned char *readarr, int bytes_in, unsigned char rdid_opcode)
> >   {
> > static const unsigned char cmd[JEDEC_RDID_OUTSIZE] = { JEDEC_RDID };
> > unsigned char cmd[] = { rdid_opcode };
> > int ret;
> > int i;
> > ret = spi_send_command(sizeof(cmd), bytes, cmd, readarr);
> > ret = spi_send_command(sizeof(cmd), bytes_in, cmd, readarr);
> > if (ret)
> > return ret;
> > msg_cspew("RDID returned");
> > for (i = 0; i<  bytes; i++)
> > for (i = 0; i<  bytes_in; i++)
> > msg_cspew(" 0x%02x", readarr[i]);
> > msg_cspew(". ");
> > return 0;
> >
> > @@ -115,13 +115,13 @@ int spi_write_disable(void)
> >    return spi_send_command(sizeof(cmd), 0, cmd, NULL);
> >   }
> >
> > -static int probe_spi_rdid_generic(struct flashchip *flash, int bytes)
> > +static int probe_spi_rdid_generic(struct flashchip *flash, int bytes_in, unsigned char rdid_opcode)
> >   {
> > unsigned char readarr[4];
> > unsigned char readarr[bytes_in];
> > uint32_t id1;
> > uint32_t id2;
> > if (spi_rdid(readarr, bytes))
> >
> > if (spi_rdid(readarr, bytes_in, rdid_opcode))
> > return 0;
> >
> > if (!oddparity(readarr[0]))
> >
> > @@ -135,7 +135,7 @@ static int probe_spi_rdid_generic(struct flashchip *flash, int bytes)
> >    		msg_cdbg("RDID byte 1 parity violation. ");
> >    	id1 = (readarr[0]<<  8) | readarr[1];
> >    	id2 = readarr[2];
> > if (bytes>  3) {
> > if (bytes_in>  3) {
> > id2<<= 8;
> > id2 |= readarr[3];
> > }
> >
> > @@ -170,7 +170,7 @@ static int probe_spi_rdid_generic(struct flashchip *flash, int bytes)
> >
> > int probe_spi_rdid(struct flashchip *flash)
> >   {
> > return probe_spi_rdid_generic(flash, 3);
> >
> > return probe_spi_rdid_generic(flash, JEDEC_RDID_INSIZE, JEDEC_RDID);
> > }
> >
> > int probe_spi_rdid4(struct flashchip *flash)
> >
> > @@ -189,7 +189,7 @@ int probe_spi_rdid4(struct flashchip *flash)
> >   #endif
> >   #endif
> >    default:
> > return probe_spi_rdid_generic(flash, 4);
> > return probe_spi_rdid_generic(flash, 4, JEDEC_RDID);
> >
> > }
> >
> > return 0;
> >
> > @@ -242,8 +242,8 @@ int probe_spi_res1(struct flashchip *flash)
> >    /* Check if RDID is usable and does not return 0xff 0xff 0xff or
> >     * 0x00 0x00 0x00. In that case, RES is pointless.
> >     */
> > if (!spi_rdid(readarr, 3)&&  memcmp(readarr, allff, 3)&&
> >    memcmp(readarr, all00, 3)) {
> > if (!spi_rdid(readarr, JEDEC_RDID_INSIZE, JEDEC_RDID)&&  memcmp(readarr, allff, 3)&&
> >    memcmp(readarr, all00, JEDEC_RDID_INSIZE)) {
> > msg_cdbg("Ignoring RES in favour of RDID.\n");
> >   return 0;
> >  }