[U-Boot] [PATCH 7/8] dfu: command: Provide support for 'dfutftp' command to handle receiving data via TFTP

[Lukasz Majewski <l.majewski@majess.pl>]

Hi Joe,

> Hi Lukasz,
> 
> On Thu, Jul 16, 2015 at 3:26 PM, Lukasz Majewski
> <l.majewski@majess.pl> wrote:
> > Hi Joe,
> >
> >
> >> Hi Lukasz,
> >>
> >> On Sun, Jul 12, 2015 at 10:30 AM, Lukasz Majewski
> >> <l.majewski@majess.pl> wrote:
> >> > The new 'dfutftp' command has syntax similar to 'dfu' command.
> >> > This new command however, requires some extra env variables to
> >> > allow update_tftp() code to work properly. For more explanation,
> >> > please consult ./doc/README.dfutftp
> >>
> >> It would be great if it didn't require them.
> >
> > I've described reasoning for them in the previous reply.
> >
> >> It would also be great if
> >> there were just a dfu command and "tftp" were a subcommand. It's a
> >> more common pattern now instead of adding new, top-level commands.
> >
> > Good point. However, I've tried to avoid #ifdefs in the cmd_dfu.c
> > code. Some boards only use USB and they would not need support for
> > tftp in the cmd_dfu.c command.
> >
> > Separate command allows adding the code only when it is needed.
> 
> That's true, but it seems a simple thing to have an ifdef in the
> command list.
> 
> You could even keep the sub-command implementation in a separate file.

If I've understood you correctly - you propose extending cmd_dfu.c to
support tftp.

In this way we would have following dfu command syntax:

dfu [tftp] <usb/eth controller> <medium> <medium number> 

e.g. dfu [tftp] 0 mmc 1

And implementation of [tftp] part should go to another file?


> 
> >> > Signed-off-by: Lukasz Majewski <l.majewski@majess.pl>
> >> > ---
> >> >  common/Makefile      |  1 +
> >> >  common/cmd_dfutftp.c | 43
> >> > +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 44
> >> > insertions(+) create mode 100644 common/cmd_dfutftp.c
> >> >
> >> > diff --git a/common/Makefile b/common/Makefile
> >> > index d6c1d48..483905c 100644
> >> > --- a/common/Makefile
> >> > +++ b/common/Makefile
> >> > @@ -211,6 +211,7 @@ obj-$(CONFIG_UPDATE_TFTP) += update.o
> >> >  obj-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
> >> >  obj-$(CONFIG_CMD_DFU) += cmd_dfu.o
> >> >  obj-$(CONFIG_CMD_GPT) += cmd_gpt.o
> >> > +obj-$(CONFIG_CMD_DFUTFTP) += cmd_dfutftp.o
> >> >
> >> >  # Power
> >> >  obj-$(CONFIG_CMD_PMIC) += cmd_pmic.o
> >> > diff --git a/common/cmd_dfutftp.c b/common/cmd_dfutftp.c
> >> > new file mode 100644
> >> > index 0000000..2b75a09
> >> > --- /dev/null
> >> > +++ b/common/cmd_dfutftp.c
> >> > @@ -0,0 +1,43 @@
> >> > +/*
> >> > + * cmd_dfutftp.c -- dfutftp command
> >> > + *
> >> > + * Copyright (C) 2015
> >> > + * Lukasz Majewski <l.majewski@majess.pl>
> >> > + *
> >> > + * SPDX-License-Identifier:    GPL-2.0+
> >> > + */
> >> > +
> >> > +#include <common.h>
> >> > +#include <net.h>
> >> > +
> >> > +static
> >> > +int do_dfutftp(cmd_tbl_t *cmdtp, int flag, int argc, char *
> >> > const argv[]) +{
> >> > +       unsigned long addr = 0;
> >> > +
> >> > +       if (argc < 4 || argc > 5)
> >> > +               return CMD_RET_USAGE;
> >> > +
> >> > +       char *interface = argv[2];
> >> > +       char *devstring = argv[3];
> >> > +
> >> > +       if (argc == 5)
> >> > +               addr = simple_strtoul(argv[4], NULL, 0);
> >> > +
> >> > +       /* Below env variables are descibed in detail
> >> > at ./doc/README.dfutftp */
> >> > +       setenv("update_tftp_exec_at_boot", "true");
> >> > +       setenv("update_tftp_dfu", "true");
> >> > +       setenv("update_tftp_dfu_interface", interface);
> >> > +       setenv("update_tftp_dfu_devstring", devstring);
> >> > +
> >> > +       return update_tftp(addr);
> >> > +}
> >> > +
> >> > +U_BOOT_CMD(dfutftp, CONFIG_SYS_MAXARGS, 1, do_dfutftp,
> >> > +          "Device Firmware Upgrade via TFTP",
> >> > +          "<ETH_controller> <interface> <dev>\n"
> >> > +          "  - device firmware upgrade via <ETH_controller>\n"
> >> > +          "    using TFTP protocol on device <dev>, attached\n"
> >> > +          "    to interface <interface>\n"
> >> > +          "    [addr] - address where FIT image has been
> >> > stored\n" +);
> >> > --
> >> > 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

Best regards,
Lukasz Majewski
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