From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?TWF0dGhpYXMgV2Vpw59lcg==?= Date: Wed, 03 Jul 2013 08:20:35 +0200 Subject: [U-Boot] imx: Kernel not booting with fdt In-Reply-To: References: <51D2F143.9010607@arcor.de> Message-ID: <51D3C2B3.4000702@arcor.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Am 03.07.2013 03:16, schrieb Fabio Estevam: > On Tue, Jul 2, 2013 at 12:26 PM, Matthias Wei?er wrote: >> Hi >> >> I try to boot a current 3.11 kernel on a custom iMX25 board using DT. u-boot >> starts the kernel but it stops working just after the first eralyprintk >> lines are out. The u-boot/kernel output: >> >> bootm 0x81000000 - 0x80800000 >> ## Booting kernel from Legacy Image at 81000000 ... >> Image Name: Linux-3.10.0 >> Image Type: ARM Linux Kernel Image (uncompressed) >> Data Size: 3834336 Bytes = 3.7 MiB >> Load Address: 80008000 >> Entry Point: 80008000 >> Verifying Checksum ... OK >> ## Flattened Device Tree blob at 80800000 >> Booting using the fdt blob at 0x80800000 >> Loading Kernel Image ... OK >> OK >> Loading Device Tree to 8374f000, end 837545d4 ... OK >> >> Starting kernel ... >> >> Uncompressing Linux... done, booting the kernel. >> [ 0.000000] Booting Linux on physical CPU 0x0 >> [ 0.000000] Initializing cgroup subsys cpuset >> [ 0.000000] Initializing cgroup subsys cpu >> [ 0.000000] Initializing cgroup subsys cpuacct >> [ 0.000000] Linux version 3.10.0 (mweisser at ubuntu) (gcc version 4.7.3 >> (Ubuntu/Linaro 4.7.3-1ubuntu1) ) #4 Tue Jul 2 1 >> 7:13:13 CEST 2013 >> [ 0.000000] CPU: ARM926EJ-S [41069264] revision 4 (ARMv5TEJ), cr=00053177 >> [ 0.000000] CPU: VIVT data cache, VIVT instruction cache >> [ 0.000000] Machine: Generic DT based system, model: Graf-Syteco zmx25 > > Not sure why you get a "Generic DT based system" here. Isn't that supossed to be the right output for a DT kernel? > Can you post your dts file? Sure. It is based on imx25-pdk.dts minus nand plus uart2 which is used as debug uart on the system in question. /dts-v1/; #include "imx25.dtsi" / { model = "Graf-Syteco zmx25"; compatible = "fsl,zmx25", "fsl,zmx25"; memory { reg = <0x80000000 0x4000000>; }; }; &uart1 { status = "okay"; }; &uart2 { status = "okay"; }; &fec { phy-mode = "rmii"; status = "okay"; }; > Have you selected CONFIG_MACH_IMX25_DT=y on your kernel config file? $ cat .config | grep CONFIG_MACH_IMX25_DT CONFIG_MACH_IMX25_DT=y Confirmed. > Also, make sure you have "#define CONFIG_OF_LIBFDT" on your U-boot > board config file. $ cat include/configs/zmx25.h | grep CONFIG_OF_LIBFDT #define CONFIG_OF_LIBFDT Confirmed. As the kernel is not crashing but hanging in an endless loop I will try if I can get some additional information via the JTAG debugger. Regards Matthias