[PATCH 1/2] tools: add fdt_add_pubkey

[Roman Kopytin]

Thanks, I found example in fdtgrep.
What do you think about function like:

static void print_usage(const char *msg)
{
	if (msg != NULL)
		fprintf(stderr, "Error: %s\n", msg);
	fprintf(stderr, "Usage: %s [-a <algo>] [-k <keydir>] [-n <keyname>] [-r <conf|image>] <fdt blob>\n"
		"Options:\n"

		"\t-a <algo>       Cryptographic algorithm. Optional parameter, default: sha1,rsa2048\n"
		"\t-k <keydir>     Directory with public key. Optional parameter, default: .\n"
		"\t-n <keyname>    Public key name. Optional parameter, default: key\n"
		"\t-r <conf|image> Required: If present this indicates that the key must be verified for the image / configuration to be considered valid\n"
		"\t<fdt blob>      FDT blob file for adding of the public key. Required parameter.\n",
		cmdname);
	exit(EXIT_FAILURE);
}


Is it ok?

-----Original Message-----
From: Jan Kiszka <jan.kiszka at siemens.com> 
Sent: Wednesday, November 10, 2021 10:22 PM
To: Roman Kopytin <Roman.Kopytin at kaspersky.com>; u-boot at lists.denx.de
Cc: Rasmus Villemoes <rasmus.villemoes at prevas.dk>
Subject: Re: [PATCH 1/2] tools: add fdt_add_pubkey

On 10.11.21 09:26, Roman Kopytin wrote:
> Could you please provide good example with needed style for helper?
> In tools I saw a lot of programs w/o help.
> 

Have a look at binman to see this full-blown - not a completely fair comparison as it benefits from Python argparse.

Jan

--
Siemens AG, T RDA IOT
Corporate Competence Center Embedded Linux