Hi Maxime, Le Wed, 13 Feb 2013 17:45:17 +0100, Maxime Ripard <[email protected]> a écrit :
> Since the only storage medium on the cfa-10036 is the MMC card, we need > to have a registered environment partition on it if we want to be able > to modify at runtime. > maybe you could add : code copied from imx23-olinuxino.c Eric > Signed-off-by: Maxime Ripard <[email protected]> > --- > arch/arm/boards/crystalfontz-cfa10036/cfa10036.c | 44 > +++++++++++++++++++++- > 1 file changed, 43 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/boards/crystalfontz-cfa10036/cfa10036.c > b/arch/arm/boards/crystalfontz-cfa10036/cfa10036.c > index b59dbab..1821b10 100644 > --- a/arch/arm/boards/crystalfontz-cfa10036/cfa10036.c > +++ b/arch/arm/boards/crystalfontz-cfa10036/cfa10036.c > @@ -97,9 +97,46 @@ static int cfa10036_mem_init(void) > } > mem_initcall(cfa10036_mem_init); > > +/** > + * Try to register an environment storage on the attached MCI card > + * @return 0 on success > + * > + * We rely on the existence of a usable SD card, already attached to > + * our system, to get something like a persistent memory for our environment. > + * If this SD card is also the boot media, we can use the second partition > + * for our environment purpose (if present!). > + */ > +static int register_persistant_environment(void) > +{ > + struct cdev *cdev; > + > + /* > + * The CFA-10036 only has one MCI card socket. > + * So, we expect its name as "disk0". > + */ > + cdev = cdev_by_name("disk0"); > + if (cdev == NULL) { > + pr_err("No SD card found\n"); > + return -ENODEV; > + } > + > + /* MCI card is present, also a useable partition on it? */ > + cdev = cdev_by_name("disk0.1"); > + if (cdev == NULL) { > + pr_err("No second partition available\n"); > + pr_info("Please create at least a second partition with" > + " 256 kiB...512 kiB in size (your choice)\n"); > + return -ENODEV; > + } > + > + /* use the full partition as our persistent environment storage */ > + return devfs_add_partition("disk0.1", 0, cdev->size, > + DEVFS_PARTITION_FIXED, "env0"); > +} > + > static int cfa10036_devices_init(void) > { > - int i; > + int i, ret; > > /* initizalize muxing */ > for (i = 0; i < ARRAY_SIZE(cfa10036_pads); i++) > @@ -124,6 +161,11 @@ static int cfa10036_devices_init(void) > > cfa10036_detect_hw(); > > + ret = register_persistant_environment(); > + if (ret != 0) > + printf("Cannot create the 'env0' persistant " > + "environment storage (%d)\n", ret); > + > return 0; > } > device_initcall(cfa10036_devices_init); _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
