From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Thu, 13 Mar 2025 11:18:20 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tsfds-00DWfi-1z for lore@lore.pengutronix.de; Thu, 13 Mar 2025 11:18:20 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tsfdq-0006ow-2P for lore@pengutronix.de; Thu, 13 Mar 2025 11:18:19 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=SH1gG9i8FcBiLhx/pHqu7W19DAjB1XS3uccTK8XHq5s=; b=c6R03xOmnmLYgJP6qLz+ITw+Op EGjKjPW8+KANsZ3hov0ik6Lu6POFP57zx2JwDU+56+v7v022PvIeAX3aDq4VUGpq+obTP3E5nRpK5 P53fvJ4aif7DA5RG8TJMfgNg+u55S3mrz0exkdnk19+vljZqd3Ha1b9iawxnuWa0vi7sugNhX2p5Z EBAtsjnlkfovPN7CQ05oK0EQQDmBLLgNbEC6IY6GI8jVwdhN9k4Odo72YOhOQGtWL8pYcM9hCMTk0 hrwd/ruxWRfseWMMke4Uq6dR7AlILYvnOWgQvhnQsCIo02efdHjMSRbtAmy/XSDOycB8AgxnUPB5g 6d86qn6Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tsfd9-0000000AplN-1e6B; Thu, 13 Mar 2025 10:17:35 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tsfd6-0000000Apky-3Fvy for barebox@lists.infradead.org; Thu, 13 Mar 2025 10:17:33 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tsfd5-0006Fy-2n; Thu, 13 Mar 2025 11:17:31 +0100 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tsfd3-005WBU-2p; Thu, 13 Mar 2025 11:17:29 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tsfd3-00Gch5-2T; Thu, 13 Mar 2025 11:17:29 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Adrian Negreanu Date: Thu, 13 Mar 2025 11:17:17 +0100 Message-Id: <20250313101728.3546902-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.5 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250313_031732_854205_F9F4F96F X-CRM114-Status: GOOD ( 11.86 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.2 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 00/11] firmware: qemu_fw_cfg: implement file system X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) The character device we currently have is cumbersome to use. The Linux way to access it at /sys/firmware/qemu_fw_cfg is much nicer to use, so this series adds support for a similar FS to barebox. A very nice result of having file system access to the QEMU variables in barebox is that we get a trivial way to pass data to barebox. To make it even more convenient to use, this series enables overriding individual files in the environment via the new mechanism, e.g.: pytest --env nv/boot.default=fit --env boot/fit=@boot.sh Ahmad Fatoum (11): video: ramfb: fix frame buffer screen size firmware: qemu_fw_cfg: drop duplicate definitions firmware: qemu_fw_cfg: add support for seeking firmware: qemu_fw_cfg: rename from /dev/fw_cfg0 to /dev/fw_cfg fs: add qemu_fw_cfg file system firmware: qemu_fw_cfg: register at device initcall level video: ramfb: use new qemu fw_cfg FS libfile: give copy_file a flags parameter libfile: pass copy_file flags through copy_recursive libfile: add support for not clobbering files in copy_file fs: qemu_fw_cfg: support populating environment via QEMU fw_cfg commands/Kconfig | 4 +- commands/cp.c | 18 +- commands/defaultenv.c | 2 +- commands/tftp.c | 2 +- common/fastboot.c | 2 +- conftest.py | 22 ++ defaultenv/defaultenv.c | 22 ++ drivers/firmware/qemu_fw_cfg.c | 63 +++-- drivers/video/Kconfig | 2 +- drivers/video/ramfb.c | 116 ++++------ fs/Kconfig | 7 + fs/Makefile | 1 + fs/qemu_fw_cfg.c | 404 +++++++++++++++++++++++++++++++++ include/envfs.h | 5 + include/libfile.h | 8 +- include/string.h | 5 + lib/libfile.c | 43 +++- 17 files changed, 592 insertions(+), 134 deletions(-) create mode 100644 fs/qemu_fw_cfg.c -- 2.39.5