[U-Boot] [RFC PATCH v4 17/23] dm: eth: Add support for ethprime env var

[Joe Hershberger]

On Sun, Mar 1, 2015 at 12:07 PM, Simon Glass <sjg at chromium.org> wrote:
>
> Hi Joe,
>
> On 24 February 2015 at 17:02, Joe Hershberger <joe.hershberger at ni.com>
wrote:
> > The ethprime env var is used to indicate the starting device if none is
> > specified in ethact. Also support aliases specified in the ethprime var.
> >
> > Signed-off-by: Joe Hershberger <joe.hershberger at ni.com>
> > Reviewed-by: Simon Glass <sjg at chromium.org>
> >
> > ---
> >
> > Changes in v4:
> > -Load from ethprime on eth_initialize()
> >
> > Changes in v3:
> > -Added support for ethprime
> >
> > Changes in v2: None
> >
> >  net/eth.c     | 29 ++++++++++++++++++++++++++++-
> >  test/dm/eth.c | 20 ++++++++++++++++++++
> >  2 files changed, 48 insertions(+), 1 deletion(-)
> >
> > diff --git a/net/eth.c b/net/eth.c
> > index 8b853e8..3b3cd84 100644
> > --- a/net/eth.c
> > +++ b/net/eth.c
> > @@ -341,6 +341,18 @@ int eth_initialize(void)
> >                 printf("No ethernet found.\n");
> >                 bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
> >         } else {
> > +               char *ethprime = getenv("ethprime");
> > +               struct udevice *prime_dev = NULL;
> > +
> > +               if (ethprime)
> > +                       prime_dev = eth_get_dev_by_name(ethprime);
> > +               if (prime_dev) {
> > +                       eth_set_dev(prime_dev);
> > +                       eth_current_changed();
> > +               } else {
> > +                       eth_set_dev(NULL);
> > +               }
> > +
> >                 bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
> >                 do {
> >                         if (num_devices)
> > @@ -348,6 +360,9 @@ int eth_initialize(void)
> >
> >                         printf("eth%d: %s", dev->seq, dev->name);
> >
> > +                       if (ethprime && dev == prime_dev)
> > +                               printf(" [PRIME]");
> > +
> >                         eth_write_hwaddr(dev);
> >
> >                         uclass_next_device(&dev);
> > @@ -896,8 +911,20 @@ void eth_set_current(void)
> >                 act = getenv("ethact");
> >                 env_changed_id = env_id;
> >         }
> > -       if (act != NULL)
> > +
> > +       if (act == NULL) {
> > +               char *ethprime = getenv("ethprime");
> > +               struct udevice *dev = NULL;
> > +
> > +               if (ethprime)
> > +                       dev = eth_get_dev_by_name(ethprime);
>
> This function can return either a net_device or a udevice. So if
> DM_ETH is not enabled, you will get a warning here.

Yes, my apologies.I didn't notice this regression until right after I
posted the series. It is fixed in my branch.

> > +               if (dev)
> > +                       eth_set_dev(dev);
> > +               else
> > +                       eth_set_dev(NULL);
> > +       } else {
> >                 eth_set_dev(eth_get_dev_by_name(act));
> > +       }
> >
> >         eth_current_changed();
> >  }
> > diff --git a/test/dm/eth.c b/test/dm/eth.c
> > index 5688b71..96e3c46 100644
> > --- a/test/dm/eth.c
> > +++ b/test/dm/eth.c
> > @@ -60,3 +60,23 @@ static int dm_test_eth_alias(struct dm_test_state
*dms)
> >         return 0;
> >  }
> >  DM_TEST(dm_test_eth_alias, DM_TESTF_SCAN_FDT);
> > +
> > +static int dm_test_eth_prime(struct dm_test_state *dms)
> > +{
> > +       NetPingIP = string_to_ip("1.1.2.2");
> > +
> > +       /* Expected to be "eth at 10003000" because of ethprime variable */
> > +       setenv("ethact", NULL);
> > +       setenv("ethprime", "eth5");
> > +       ut_assertok(NetLoop(PING));
> > +       ut_asserteq_str("eth at 10003000", getenv("ethact"));
> > +
> > +       /* Expected to be "eth at 10002000" because it is first */
> > +       setenv("ethact", NULL);
> > +       setenv("ethprime", NULL);
> > +       ut_assertok(NetLoop(PING));
> > +       ut_asserteq_str("eth at 10002000", getenv("ethact"));
> > +
> > +       return 0;
> > +}
> > +DM_TEST(dm_test_eth_prime, DM_TESTF_SCAN_FDT);
> > --
> > 1.7.11.5
> >
>
> Regards,
> Simon
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