On Friday 16 December 2016 12:42:34 Pali Rohár wrote:
> On Thursday 15 December 2016 11:09:32 Russell King - ARM Linux wrote:
> > > What is reason that CONFIG_CMDLINE is not supported for DT?
> >
> > Sorry, that's my mistake - as you've pointed out above, it is
> > supported but via generic code. I was only looking at arch code
> > when I made the statement.
> >
> > This patch (untested) should solve it:
> > drivers/of/fdt.c | 40 ++++++++++++++++++++--------------------
> > 1 file changed, 20 insertions(+), 20 deletions(-)
> >
> > diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
> > index c89d5d231a0e..fb89157332c6 100644
> > --- a/drivers/of/fdt.c
> > +++ b/drivers/of/fdt.c
> > @@ -1073,26 +1073,6 @@ int __init
> > early_init_dt_scan_chosen(unsigned long node, const char *uname,
> > if (p != NULL && l > 0)
> >
> > strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
> >
> > - /*
> > - * CONFIG_CMDLINE is meant to be a default in case nothing else
> > - * managed to set the command line, unless CONFIG_CMDLINE_FORCE
> > - * is set in which case we override whatever was found earlier.
> > - */
> > -#ifdef CONFIG_CMDLINE
> > -#if defined(CONFIG_CMDLINE_EXTEND)
> > - strlcat(data, " ", COMMAND_LINE_SIZE);
> > - strlcat(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
> > -#elif defined(CONFIG_CMDLINE_FORCE)
> > - strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
> > -#else
> > - /* No arguments from boot loader, use kernel's cmdl*/
> > - if (!((char *)data)[0])
> > - strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
> > -#endif
> > -#endif /* CONFIG_CMDLINE */
> > -
> > - pr_debug("Command line is: %s\n", (char*)data);
> > -
> >
> > /* break now */
> > return 1;
> >
> > }
> >
> > @@ -1205,6 +1185,26 @@ void __init early_init_dt_scan_nodes(void)
> >
> > /* Retrieve various information from the /chosen node */
> > of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
> >
> > + /*
> > + * CONFIG_CMDLINE is meant to be a default in case nothing else
> > + * managed to set the command line, unless CONFIG_CMDLINE_FORCE
> > + * is set in which case we override whatever was found earlier.
> > + */
> > +#ifdef CONFIG_CMDLINE
> > +#if defined(CONFIG_CMDLINE_EXTEND)
> > + strlcat(boot_command_line, " ", COMMAND_LINE_SIZE);
> > + strlcat(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
> > +#elif defined(CONFIG_CMDLINE_FORCE)
> > + strlcpy(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
> > +#else
> > + /* No arguments from boot loader, use kernel's cmdline */
> > + if (!boot_command_line[0])
> > + strlcpy(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
> > +#endif
> > +#endif /* CONFIG_CMDLINE */
> > +
> > + pr_debug("Command line is: %s\n", boot_command_line);
> > +
> >
> > /* Initialize {size,address}-cells info */
> > of_scan_flat_dt(early_init_dt_scan_root, NULL);
>
> Patch is working fine and fixes my problem. You can add my Tested-by.Russell, are you going to use your patch? Or original my? Or any other? If you need more testing or other data, let me know. I would like to see this problem (non working CONFIG_CMDLINE) fixed... -- Pali Rohár pali.ro...@gmail.com
signature.asc
Description: This is a digitally signed message part.
