[U-Boot] [PATCH v3 6/8] cmd: efishell: add dh command

[AKASHI Takahiro <takahiro.akashi@linaro.org>]

On Thu, Dec 20, 2018 at 08:49:25AM +0100, Heinrich Schuchardt wrote:
> On 12/18/18 6:05 AM, AKASHI Takahiro wrote:
> > "dh" command prints all the uefi handles used in the system.
> > => efishell dh
> > (T.B.D.)
> > 0: (protocol info not available)
> > 1: (protocol info not available)
> > 2: (protocol info not available)
> > 3: (protocol info not available)
> > 4: (protocol info not available)
> > 5: (protocol info not available)
> > 6: (protocol info not available)
> > 7: (protocol info not available)
> > 8: (protocol info not available)
> > 9: (protocol info not available)
> > 10: (protocol info not available)
> > 11: (protocol info not available)
> > 12: (protocol info not available)
> > 13: (protocol info not available)
> > 14: (protocol info not available)
> > 15: (protocol info not available)
> > 
> > Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
> > ---
> >  cmd/efishell.c | 33 ++++++++++++++++++++++++++++++++-
> >  1 file changed, 32 insertions(+), 1 deletion(-)
> > 
> > diff --git a/cmd/efishell.c b/cmd/efishell.c
> > index 5a81a627d616..47ad77606062 100644
> > --- a/cmd/efishell.c
> > +++ b/cmd/efishell.c
> > @@ -511,6 +511,33 @@ static int do_efi_show_memmap(int argc, char * const argv[])
> >  	return CMD_RET_SUCCESS;
> >  }
> >  
> > +static char *efi_get_proto_info(efi_handle_t handle)
> > +{
> > +	return strdup("(protocol info not available)");
> Shouldn't this enumerate all protocol GUIDs installed on the handles by
> calling ProtocolsPerHandle()?

Okay.

> Also instances of installed drivers identifiable by the driver binding
> protocol might be interesting.

Getting a driver name from driver binding protocol can be a bit hard.
See my reply to your comment on "efishell drivers."

Thanks,
-Takahiro Akashi


> Best regards
> 
> Heinrich
> 
> > +}
> > +
> > +static int do_efi_show_handles(int argc, char * const argv[])
> > +{
> > +	efi_handle_t *handles = NULL, *handle;
> > +	char *info;
> > +	int i;
> > +
> > +	handles = efi_get_handles_by_proto(NULL);
> > +	if (!handles)
> > +		return CMD_RET_SUCCESS;
> > +
> > +	for (handle = handles, i = 0; *handle; handle++, i++) {
> > +		/* TODO: depends on protocols */
> > +		info = efi_get_proto_info(*handle);
> > +		printf("%d: %s\n", i, info ?: "");
> > +		free(info);
> > +	}
> > +
> > +	free(handles);
> > +
> > +	return CMD_RET_SUCCESS;
> > +}
> > +
> >  static int do_efi_boot_add(int argc, char * const argv[])
> >  {
> >  	int id;
> > @@ -900,6 +927,8 @@ static int do_efishell(cmd_tbl_t *cmdtp, int flag,
> >  		return do_efi_show_images(argc, argv);
> >  	else if (!strcmp(command, "memmap"))
> >  		return do_efi_show_memmap(argc, argv);
> > +	else if (!strcmp(command, "dh"))
> > +		return do_efi_show_handles(argc, argv);
> >  	else
> >  		return CMD_RET_USAGE;
> >  }
> > @@ -929,7 +958,9 @@ static char efishell_help_text[] =
> >  	"efishell images\n"
> >  	"  - show loaded images\n"
> >  	"efishell memmap\n"
> > -	"  - show uefi memory map\n";
> > +	"  - show uefi memory map\n"
> > +	"efishell dh\n"
> > +	"  - show uefi handles\n";
> >  #endif
> >  
> >  U_BOOT_CMD(
> > 
>