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Fri, 30 Apr 2021 07:41:38 -0700 (PDT) Received: from localhost ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id a11sm819550oif.52.2021.04.30.07.41.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Apr 2021 07:41:37 -0700 (PDT) Date: Fri, 30 Apr 2021 07:41:36 -0700 From: Guenter Roeck To: Bin Meng Subject: Re: [PATCH v3 3/4] hw/arm: sabrelite: Connect the Ethernet PHY at address 6 Message-ID: <20210430144136.GA2880420@roeck-us.net> References: <20210106063504.10841-1-bmeng.cn@gmail.com> <20210106063504.10841-4-bmeng.cn@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210106063504.10841-4-bmeng.cn@gmail.com> Received-SPF: pass client-ip=2607:f8b0:4864:20::c2e; envelope-from=groeck7@gmail.com; helo=mail-oo1-xc2e.google.com X-Spam_score_int: -11 X-Spam_score: -1.2 X-Spam_bar: - X-Spam_report: (-1.2 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Bin Meng , qemu-devel@nongnu.org, Jean-Christophe Dubois , qemu-arm@nongnu.org, Alex =?iso-8859-1?Q?Benn=E9e?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi, On Wed, Jan 06, 2021 at 02:35:03PM +0800, Bin Meng wrote: > From: Bin Meng > > At present, when booting U-Boot on QEMU sabrelite, we see: > > Net: Board Net Initialization Failed > No ethernet found. > > U-Boot scans PHY at address 4/5/6/7 (see board_eth_init() in the > U-Boot source: board/boundary/nitrogen6x/nitrogen6x.c). On the real > board, the Ethernet PHY is at address 6. Adjust this by updating the > "fec-phy-num" property of the fsl_imx6 SoC object. > > With this change, U-Boot sees the PHY but complains MAC address: > > Net: using phy at 6 > FEC [PRIME] > Error: FEC address not set. > > This is due to U-Boot tries to read the MAC address from the fuse, > which QEMU does not have any valid content filled in. However this > does not prevent the Ethernet from working in QEMU. We just need to > set up the MAC address later in the U-Boot command shell, by: > > => setenv ethaddr 00:11:22:33:44:55 > With this patch in place, the standard Ethernet interface no longer works when booting sabrelite Linux images directly (without u-boot) using the following qemu command. qemu-system-arm -M sabrelite -kernel arch/arm/boot/zImage ... The Ethernet interface still instantiates, but packet transfer to the host no longer works. Reverting this patch fixes the problem for me. Is there a qemu command line parameter that is now necessary to instantiate the Ethernet interface when booting Linux ? Thanks, Guenter