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Mon, 08 Jul 2024 09:58:08 -0700 (PDT) Message-ID: <152d9c90-3e58-4706-b12a-6d2796681d0f@linaro.org> Date: Mon, 8 Jul 2024 18:58:07 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v42 96/98] hw/sd/sdcard: Support boot area in emmc image From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= To: Joel Stanley References: <20240628070216.92609-1-philmd@linaro.org> <20240628070216.92609-97-philmd@linaro.org> Content-Language: en-US Cc: qemu-devel@nongnu.org, =?UTF-8?Q?C=C3=A9dric_Le_Goater?= , Markus Armbruster In-Reply-To: <20240628070216.92609-97-philmd@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::336; envelope-from=philmd@linaro.org; helo=mail-wm1-x336.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hi Joel, Cédric, On 28/6/24 09:02, Philippe Mathieu-Daudé wrote: > From: Joel Stanley > > This assumes a specially constructed image: > > dd if=/dev/zero of=mmc-bootarea.img count=2 bs=1M > dd if=u-boot-spl.bin of=mmc-bootarea.img conv=notrunc > dd if=u-boot.bin of=mmc-bootarea.img conv=notrunc count=64 bs=1K > cat mmc-bootarea.img obmc-phosphor-image.wic > mmc.img I'm not keen on imposing that layout to use the model (besides so far we use 1MiB as constant). I'd rather use 3 BlockBackends for eMMC (boot[01], user). This would scale for multiple sizes. > truncate --size 16GB mmc.img > truncate --size 128MB mmc-bootarea.img > > For now this still requires a mtd image to load the SPL: > > qemu-system-arm -M tacoma-bmc -nographic \ > -global driver=sd-card,property=emmc,value=true \ > -drive file=mmc.img,if=sd,index=2 \ > -drive file=mmc-bootarea.img,if=mtd,format=raw (AFAICT we don't need that mtd anymore, correct?) > Signed-off-by: Joel Stanley > Signed-off-by: Cédric Le Goater > Signed-off-by: Philippe Mathieu-Daudé > --- > include/hw/sd/sd.h | 1 + > hw/sd/sd.c | 39 +++++++++++++++++++++++++++++++++++++++ > 2 files changed, 40 insertions(+)