[U-Boot] [PATCH 6/8] update: tftp: dfu: Extend update_tftp() function to support DFU

[Lukasz Majewski]

Hi Joe,

> Hi Lukasz,
> 
> On Sun, Jul 12, 2015 at 10:30 AM, Lukasz Majewski
> <l.majewski at majess.pl> wrote:
> > This code allows using DFU defined mediums for storing data
> > received via TFTP protocol.
> >
> > It reuses legacy code at common/update.c.
> >
> > To run update_tftp() during boot one needs to define
> > "update_tftp_exec_at_boot=true".
> >
> > Signed-off-by: Lukasz Majewski <l.majewski at majess.pl>
> > ---
> >  common/update.c | 37 ++++++++++++++++++++++++++++---------
> >  1 file changed, 28 insertions(+), 9 deletions(-)
> >
> > diff --git a/common/update.c b/common/update.c
> > index 75c6d62..f3ed036 100644
> > --- a/common/update.c
> > +++ b/common/update.c
> > @@ -18,6 +18,7 @@
> >  #include <net.h>
> >  #include <tftp.h>
> >  #include <malloc.h>
> > +#include <dfu.h>
> >
> >  /* env variable holding the location of the update file */
> >  #define UPDATE_FILE_ENV                "updatefile"
> > @@ -224,11 +225,18 @@ static int update_fit_getparams(const void
> > *fit, int noffset, ulong *addr,
> >
> >  int update_tftp(ulong addr)
> >  {
> > -       char *filename, *env_addr;
> > -       int images_noffset, ndepth, noffset;
> > +       char *filename, *env_addr, *fit_image_name;
> >         ulong update_addr, update_fladdr, update_size;
> > -       void *fit;
> > +       int images_noffset, ndepth, noffset;
> > +       bool update_tftp_dfu = false;
> >         int ret = 0;
> > +       void *fit;
> > +
> > +       if (!getenv("update_tftp_exec_at_boot"))
> > +               return 0;
> > +
> > +       if (getenv("update_tftp_dfu"))
> > +               update_tftp_dfu = true;
> 
> As I mentioned in the documentation patch, it would be nice to split
> these out and drop the env vars.

This would be difficult since update_tftp() is used at dfutftp() and
legacy fitupd command. Moreover it is called in the early stage of
booting to perform auto firmware upgrade.

Those env variables give some control over its behavior.

> 
> >
> >         /* use already present image */
> >         if (addr)
> > @@ -277,8 +285,8 @@ got_update_file:
> >                 if (ndepth != 1)
> >                         goto next_node;
> >
> > -               printf("Processing update '%s' :",
> > -                       fit_get_name(fit, noffset, NULL));
> > +               fit_image_name = (char *)fit_get_name(fit, noffset,
> > NULL);
> > +               printf("Processing update '%s' :", fit_image_name);
> >
> >                 if (!fit_image_verify(fit, noffset)) {
> >                         printf("Error: invalid update hash,
> > aborting\n"); @@ -294,10 +302,21 @@ got_update_file:
> >                         ret = 1;
> >                         goto next_node;
> >                 }
> > -               if (update_flash(update_addr, update_fladdr,
> > update_size)) {
> > -                       printf("Error: can't flash update,
> > aborting\n");
> > -                       ret = 1;
> > -                       goto next_node;
> > +
> > +               if (!update_tftp_dfu) {
> > +                       if (update_flash(update_addr, update_fladdr,
> > +                                        update_size)) {
> > +                               printf("Error: can't flash update,
> > aborting\n");
> > +                               ret = 1;
> > +                               goto next_node;
> > +                       }
> > +               } else if (fit_image_check_type(fit, noffset,
> > +                                               IH_TYPE_FIRMWARE)) {
> > +                       if (dfu_tftp_write(fit_image_name,
> > +                                          update_addr,
> > update_size)) {
> > +                               ret = 1;
> > +                               goto next_node;
> > +                       }
> >                 }
> >  next_node:
> >                 noffset = fdt_next_node(fit, noffset, &ndepth);
> > --
> > 2.1.4
> >
> > _______________________________________________
> > U-Boot mailing list
> > U-Boot at lists.denx.de
> > http://lists.denx.de/mailman/listinfo/u-boot

Best regards,
Lukasz Majewski
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