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Received: by mailuser.nyi.internal (Postfix, from userid 501) id 9D440A00079; Tue, 25 May 2021 19:07:15 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.5.0-alpha0-448-gae190416c7-fm-20210505.004-gae190416 Mime-Version: 1.0 Message-Id: <9d6af632-ce29-4b4e-b039-077913cc9e0d@www.fastmail.com> In-Reply-To: <3c87dea1.379a.179a29ccce3.Coremail.ouyangxuan10@163.com> References: <5ad9e979.1337.1799386d2c8.Coremail.ouyangxuan10@163.com> <682a1194-bb2c-42c5-a4d5-1fb3a7ae750d@www.fastmail.com> <3c87dea1.379a.179a29ccce3.Coremail.ouyangxuan10@163.com> Date: Wed, 26 May 2021 08:36:24 +0930 From: "Andrew Jeffery" To: www Subject: =?UTF-8?Q?Re:_[openbmc-qemu]:_Add_read_mac_from_eeprom_in_uboot_by_i2c_a?= =?UTF-8?Q?nd_lead_to_the_image_unable_to_start__in_QEMU=3F?= Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: openbmc@lists.ozlabs.org, =?UTF-8?Q?C=C3=A9dric_Le_Goater?= Errors-To: openbmc-bounces+openbmc=archiver.kernel.org@lists.ozlabs.org Sender: "openbmc" Hi Byron, I've Cc'ed the openbmc mailing list on this reply. On Tue, 25 May 2021, at 17:50, www wrote: >=20 >=20 > At 2021-05-24 08:22:58, "Andrew Jeffery" wrote: > >Hi Byron > > > >On Sat, 22 May 2021, at 19:32, www wrote: > >> Hi Andrew Jeffery, Joel Stanley & C=C3=A9dric Le Goater, > >>=20 > >> chip=EF=BC=9Aaspeed 2500 > >> uboot =EF=BC=9A u-boot-2016.07 commit-id: cc6c5bef00ebbac0b37 > >> platform: romulus > >>=20 > >> I enable read mac from eeprom by i2c in uboot, and lead to the ima= ge=20 > >> unable to start in QEMU. The startup process stops at "Starting ke= rnel=20 > >> ...=E2=80=9C > >> I'd like to ask: > >> 1. How can I solve this problem? Do you have any suggestions? > > > >Can you please configure your kernel with the following and re-run? > > > > CONFIG_DEBUG_LL=3Dy > > CONFIG_DEBUG_LL_UART_8250=3Dy > > CONFIG_DEBUG_UART_PHYS=3D0x1e784000 > > CONFIG_DEBUG_UART_VIRT=3D0xf8184000 > > > I set up these four items and didn't print any information. > then I add "*#define DEBUG*" in the file of *arch/arm/boot/compressed/= head.S*,=20 > It's just one more line printed. Sorry, I failed to mention that you also need to add 'debug' and=20 'earlyprintk' to your kernel commandline (i.e. append them to the=20 'bootargs' u-boot environment variable) for the CONFIG_DEBUG_* bits=20 above to be useful. Let me know if that helps. Andrew >=20 > thanks, > Byron >=20 > >This allows us to see the kernel log before the UART driver is probed= . > > > >Also, please ask these questions on the mailing list. Other people=20= > >might have similar problems and so a public discussion will help them= =20 > >too. Posting publicly can help you also, because you're relying on at= =20 > >least one of the three of us to reply to you in a reasonable timefram= e.=20 > >If your question is public anyone who has the skills and time can chi= me=20 > >in to help you out. > > > >Andrew >=20 >=20 > =20 >=20 > Attachments: > * image.png