From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 66FFC1D6DC8 for ; Fri, 24 Jan 2025 06:38:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737700698; cv=none; b=JoICYx/42fMjVMPa1jI/qRo5kZMlQsrUBoEut/O8f5L2jKbA2l3UPkiPPNVmWqOifMeoUgawLGrJH+j1bbvfWUT5CGn/ImadravG4PEbhCSIlY0R20mCsx8Csze+MGAbWXvT+tQcv7tjA2ZMRDzx5gC//nGZfrsrJjrOjqeMtcY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737700698; c=relaxed/simple; bh=8GFBoLoXRwEXZzlcz8WQINu5PQggvHKiw2MKpA22w8w=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=PFVg/He5JEuDIzvv0/sQQ+4GFNtH0sLKuqt6nFwzLvi9CkpuvL1Nm/X4ffvylcWrIKdaCaURCfgg0EMheO/QqUksBbahEKSDQP2xI+KZZhkDb5kWG6Na2XlgRsxhtZG/IQR//TXpPxmb9348MsgqrvSXAAs49tT/hNURqWquGQI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=Wr9lv8+b; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="Wr9lv8+b" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6FC8EC4CED2; Fri, 24 Jan 2025 06:38:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1737700697; bh=8GFBoLoXRwEXZzlcz8WQINu5PQggvHKiw2MKpA22w8w=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=Wr9lv8+b6kH112n6zmcPczSkCGZk8tyfeg8Xp/44eB8NnLNrK40lLkqpgnOVdTjOL bJxGWT2aP6z58419Qt4H78wL5VUHwmcoSTxJgPYsxX19w0y3HpEH0J9fV1TeftN+Mp lokuXLIeTl6FSZZE0iz4z6SOhdM/Y2NjDoVWHLro= Date: Thu, 23 Jan 2025 22:38:16 -0800 From: Andrew Morton To: "Guilherme G. Piccoli" Cc: linux-kernel@vger.kernel.org, mcgrof@kernel.org, russ.weight@linux.dev, dakr@kernel.org, gregkh@linuxfoundation.org, rafael@kernel.org, masahiroy@kernel.org, nathan@kernel.org, nicolas@fjasle.eu, kernel-dev@igalia.com, kernel@gpiccoli.net, Thadeu Lima de Souza Cascardo Subject: Re: [PATCH] scripts: Add script to extract built-in firmware blobs Message-Id: <20250123223816.c695a6b85f568a2eb8719508@linux-foundation.org> In-Reply-To: <20250120190436.127578-1-gpiccoli@igalia.com> References: <20250120190436.127578-1-gpiccoli@igalia.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 20 Jan 2025 16:04:26 -0300 "Guilherme G. Piccoli" wrote: > Through the options CONFIG_EXTRA_FIRMWARE{_DIR} one is able to build > a kernel including firmware blobs in a built-in fashion. This is > usually the case of built-in drivers that require some blobs in > order to work properly, for example, like in non-initrd based systems. > > Add hereby a script to extract these blobs from a non-stripped vmlinux, > similar to the idea of "extract-ikconfig". The firmware loader interface > saves such built-in blobs as rodata entries, having a field for the FW > name as "_fw___bin"; the tool extracts files > named "_" for each rodata firmware entry > detected. It makes use of awk, bash, dd and readelf, pretty standard > tooling for Linux development. Please describe the use case(s) for this. ie, why are you suggesting this be added to Linux?