Hi Vaibhav On Wed, 27 Jun 2012, Hiremath, Vaibhav wrote: > Build Steps: > ============ > - make ARCH=arm CROSS_COMPILE=<toolchain> distclean > - make ARCH=arm CROSS_COMPILE=<toolchain> omap2plus_defconfig > - Enable option CONFIG_ARM_APPENDED_DTB and CONFIG_ARM_ATAG_DTB_COMPAT > - make ARCH=arm CROSS_COMPILE=<toolchain> uImage-dtb.am335x-evm > (Since I am not using DT aware u-boot) > > Use the ramdisk image to boot kernel, since we do not have support for any > storage devices in the mainline. > > U-Boot commands to boot: > ======================== > setenv bootcmd 'mmc rescan 0; fatload mmc 0 81000000 uImage; fatload mmc 0 82000000 ramdisk-pm.gz; bootm 81000000' > setenv bootargs 'console=ttyO0,115200n8 mem=128M root=/dev/ram rw initrd=0x82000000,16MB ramdisk_size=65536 earlyprintk=serial' > boot > > > Hope this will help you to boot the kernel on BeagleBone. Was anyone else able to get this to work? I tried these steps here but with one difference: I put the U-boot commands into the uEnv.txt file: optargs=mem=128M root=/dev/ram rw initrd=0x82000000,16MB ramdisk_size=65536 earlyprintk=serial ignore_loglevel debug uenvcmd=mmc rescan 0; fatload mmc 0 81000000 uImage; fatload mmc 0 82000000 ramdisk-pm.gz; bootm 81000000 Unfortunately the kernel did not boot. The log is at the bottom of this file. I did verify in U-boot that the commands were being executed correctly by walking through them by hand. The branch used was your am335x-upstream-staging branch, plus a minor patch to allow the kernel to build on an am335x-only config (although for the purposes of this test, omap2plus_defconfig was used). This is on a BeagleBone A3, using gcc version 4.5.1 (Sourcery G++ Lite 2010.09-50). Enabling CONFIG_EARLY_PRINTK doesn't make any difference, which isn't too surprising since there's no output from the kernel at all. Unfortunately, I don't have the time to do in-depth troubleshooting here with JTAG. Any thoughts? - Paul No daughter card present NAND: HW ECC Hamming Code selected nand_get_flash_type: second ID read did not match 10,10 against 00,00 No NAND device found!!! 0 MiB MMC: OMAP SD/MMC: 0 *** Warning - readenv() failed, using default environment Net: cpsw Hit any key to stop autoboot: 0 SD/MMC found on device 0 reading uEnv.txt 224 bytes read Loaded environment from uEnv.txt Importing environment from mmc ... Running uenvcmd ... reading uImage 3819902 bytes read reading ramdisk-pm.gz 2013059 bytes read ## Booting kernel from Legacy Image at 81000000 ... Image Name: Linux-3.5.0-rc1-11828-ge2b3dd1 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 3819838 Bytes = 3.6 MiB Load Address: 80008000 Entry Point: 80008000 Verifying Checksum ... OK Loading Kernel Image ... OK OK Starting kernel ... -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
