Good news; am able to get it booting with the images you sent and by following the U-boot commands line by line from your earlier post. If I use the uEnv.txt to set the optargs and uenvcmd to the same values, it hangs as before. So looks like I need to do a little further debugging there to see why that's not working. Thanks for your help. - Paul U-Boot 2011.09-00009-gcf6e04d (Mar 08 2012 - 17:15:43) I2C: ready DRAM: 256 MiB WARNING: Caches not enabled No daughter card present NAND: HW ECC Hamming Code selected nand_get_flash_type: second ID read did not match 10,10 against 00,10 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 U-Boot# U-Boot# setenv bootargs console=ttyO0,115200n8 mem=128M root=/dev/ram rw initrd=0x82000000,16MB ramdisk_size=65536 earlyprintk=seril U-Boot# mmc rescan 0 U-Boot# fatload mmc 0 81000000 uImage-dtb.am335x-evm reading uImage-dtb.am335x-evm ** Unable to read "uImage-dtb.am335x-evm" from mmc 0:1 ** U-Boot# fatload mmc 0 81000000 uImage reading uImage 3539030 bytes read U-Boot# fatload mmc 0 82000000 ramdisk-pm.gz reading ramdisk-pm.gz 2022580 bytes read U-Boot# bootm 81000000 ## Booting kernel from Legacy Image at 81000000 ... Image Name: Linux-3.5.0-rc1-11827-g67e68668 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 3538966 Bytes = 3.4 MiB Load Address: 80008000 Entry Point: 80008000 Verifying Checksum ... OK Loading Kernel Image ... OK OK Starting kernel ... [ 0.000000] Booting Linux on physical CPU 0 [ 0.000000] Linux version 3.5.0-rc1-11827-g67e68668 (a0393758@psplinux064) (gcc version 4.5.3 20110311 (prerelease) (GCC) ) #2 SMP Thu Jun 28 00:20:09 IST 2012 [ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] Machine: Generic AM33XX (Flattened Device Tree), model: TI AM335x EVM [ 0.000000] cma: CMA: reserved 16 MiB at 86800000 [ 0.000000] Memory policy: ECC disabled, Data cache writeback [ 0.000000] AM335X ES1.0 (neon ) [ 0.000000] PERCPU: Embedded 8 pages/cpu @c0d74000 s11520 r8192 d13056 u32768 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32256 [ 0.000000] Kernel command line: console=ttyO0,115200n8 mem=128M root=/dev/ram rw initrd=0x82000000,16MB ramdisk_size=65536 earlyprintk=serial [ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes) [ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes) [ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes) [ 0.000000] Memory: 127MB = 127MB total [ 0.000000] Memory: 83336k/83336k available, 47736k reserved, 0K highmem [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) [ 0.000000] vmalloc : 0xc8800000 - 0xff000000 ( 872 MB) [ 0.000000] lowmem : 0xc0000000 - 0xc8000000 ( 128 MB) [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB) [ 0.000000] .text : 0xc0008000 - 0xc0626de4 (6268 kB) [ 0.000000] .init : 0xc0627000 - 0xc0675d00 ( 316 kB) [ 0.000000] .data : 0xc0676000 - 0xc0713570 ( 630 kB) [ 0.000000] .bss : 0xc0713594 - 0xc0c6be08 (5475 kB) [ 0.000000] Hierarchical RCU implementation. [ 0.000000] NR_IRQS:474 [ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts [ 0.000000] Total of 128 interrupts on 1 active controller [ 0.000000] OMAP clockevent source: GPTIMER1 at 24000000 Hz [ 0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms [ 0.000000] OMAP clocksource: GPTIMER2 at 24000000 Hz [ 0.000000] Console: colour dummy device 80x30 [ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.000000] ... MAX_LOCK_DEPTH: 48 [ 0.000000] ... MAX_LOCKDEP_KEYS: 8191 [ 0.000000] ... CLASSHASH_SIZE: 4096 [ 0.000000] ... MAX_LOCKDEP_ENTRIES: 16384 [ 0.000000] ... MAX_LOCKDEP_CHAINS: 32768 [ 0.000000] ... CHAINHASH_SIZE: 16384 [ 0.000000] memory used by lock dependency info: 3695 kB [ 0.000000] per task-struct memory footprint: 1152 bytes [ 0.084512] Calibrating delay loop... 497.82 BogoMIPS (lpj=1941504) [ 0.084575] pid_max: default: 32768 minimum: 301 [ 0.085427] Security Framework initialized [ 0.085746] Mount-cache hash table entries: 512 [ 0.095474] CPU: Testing write buffer coherency: ok [ 0.096368] CPU0: thread -1, cpu 0, socket -1, mpidr 0 [ 0.096455] Setting up static identity map for 0x80462f40 - 0x80462fb0 [ 0.098510] Brought up 1 CPUs [ 0.098538] SMP: Total of 1 processors activated (497.82 BogoMIPS). [ 0.117359] initlevel:0=early, 4 registered initcalls [ 0.117688] initlevel:1=core, 24 registered initcalls [ 0.130732] dummy: [ 0.135033] NET: Registered protocol family 16 [ 0.135342] initlevel:2=postcore, 19 registered initcalls [ 0.142542] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.142697] GPMC revision 6.0 [ 0.143031] gpmc: irq-20 could not claim: err -22 [ 0.153324] initlevel:3=arch, 16 registered initcalls [ 0.172994] OMAP GPIO hardware version 0.1 [ 0.195325] No ATAGs? [ 0.195327] hw-breakpoint: debug architecture 0x4 unsupported. [ 0.205396] initlevel:4=subsys, 43 registered initcalls [ 0.288151] bio: create slab <bio-0> at 0 [ 0.301232] SCSI subsystem initialized [ 0.304817] usbcore: registered new interface driver usbfs [ 0.305531] usbcore: registered new interface driver hub [ 0.306545] usbcore: registered new device driver usb [ 0.319884] omap_i2c i2c.13: bus -1 rev2.4.0 at 100 kHz [ 0.334856] omap_i2c i2c.14: bus -1 rev2.4.0 at 100 kHz [ 0.350437] omap_i2c i2c.15: bus -1 rev2.4.0 at 100 kHz [ 0.360796] initlevel:5=fs, 20 registered initcalls [ 0.361110] Switching to clocksource gp_timer [ 0.504856] NET: Registered protocol family 2 [ 0.505958] IP route cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.508505] TCP established hash table entries: 4096 (order: 3, 32768 bytes) [ 0.508889] TCP bind hash table entries: 4096 (order: 5, 147456 bytes) [ 0.512097] TCP: Hash tables configured (established 4096 bind 4096) [ 0.512236] TCP: reno registered [ 0.512278] UDP hash table entries: 256 (order: 2, 20480 bytes) [ 0.512654] UDP-Lite hash table entries: 256 (order: 2, 20480 bytes) [ 0.513831] NET: Registered protocol family 1 [ 0.515748] RPC: Registered named UNIX socket transport module. [ 0.515776] RPC: Registered udp transport module. [ 0.515792] RPC: Registered tcp transport module. [ 0.515807] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.516947] Trying to unpack rootfs image as initramfs... [ 0.519935] rootfs image is not initramfs (no cpio magic); looks like an initrd [ 0.662490] Freeing initrd memory: 16384K [ 0.662531] initlevel:6=device, 185 registered initcalls [ 0.662721] NetWinder Floating Point Emulator V0.97 (double precision) [ 0.871566] VFS: Disk quotas dquot_6.5.2 [ 0.871964] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [ 0.874030] NFS: Registering the id_resolver key type [ 0.874693] Key type id_resolver registered [ 0.876405] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. [ 0.878207] msgmni has been set to 226 [ 0.882644] io scheduler noop registered [ 0.882671] io scheduler deadline registered [ 0.882977] io scheduler cfq registered (default) [ 0.886331] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 0.895435] serial.7: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0 [ 1.505306] console [ttyO0] enabled [ 1.511548] serial.8: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1 [ 1.521021] serial.9: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2 [ 1.530178] serial.10: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3 [ 1.539399] omap_uart serial.11: [UART-1]: failure [serial_omap_probe]: -22 [ 1.546983] omap_uart: probe of serial.11 failed with error -22 [ 1.553752] omap_uart serial.12: [UART-1]: failure [serial_omap_probe]: -22 [ 1.561280] omap_uart: probe of serial.12 failed with error -22 [ 1.608812] brd: module loaded [ 1.637737] loop: module loaded [ 1.648775] mtdoops: mtd device (mtddev=name/number) must be supplied [ 1.656905] OneNAND driver initializing [ 1.674797] usbcore: registered new interface driver asix [ 1.681200] usbcore: registered new interface driver cdc_ether [ 1.688454] usbcore: registered new interface driver smsc95xx [ 1.695334] usbcore: registered new interface driver net1080 [ 1.702097] usbcore: registered new interface driver cdc_subset [ 1.709078] usbcore: registered new interface driver zaurus [ 1.715775] usbcore: registered new interface driver cdc_ncm [ 1.723841] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 1.732439] usbcore: registered new interface driver cdc_wdm [ 1.738595] Initializing USB Mass Storage driver... [ 1.744634] usbcore: registered new interface driver usb-storage [ 1.750971] USB Mass Storage support registered. [ 1.757383] usbcore: registered new interface driver libusual [ 1.764317] usbcore: registered new interface driver usbtest [ 1.772412] mousedev: PS/2 mouse device common for all mice [ 1.784078] i2c /dev entries driver [ 1.792814] Driver for 1-wire Dallas network protocol. [ 1.802435] omap_wdt: OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec [ 1.814452] omap_hsmmc mmc.18: Failed to get debounce clk [ 1.862238] omap_hsmmc mmc.19: Failed to get debounce clk [ 1.876561] mmc0: host doesn't support card's voltages [ 1.882111] mmc0: error -22 whilst initialising SD card [ 1.917023] omap_hsmmc mmc.20: Failed to get debounce clk [ 1.977620] usbcore: registered new interface driver usbhid [ 1.983656] usbhid: USB HID core driver [ 1.988273] oprofile: hardware counters not available [ 1.993605] oprofile: using timer interrupt. [ 1.999234] TCP: cubic registered [ 2.003055] Initializing XFRM netlink socket [ 2.007730] NET: Registered protocol family 17 [ 2.012848] NET: Registered protocol family 15 [ 2.018313] Key type dns_resolver registered [ 2.022832] initlevel:7=late, 26 registered initcalls [ 2.028421] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3 [ 2.036674] ThumbEE CPU extension supported. [ 2.054739] clock: disabling unused clocks to save power [ 2.068694] drivers/rtc/hctosys.c: unable to open rtc device (rtc0) [ 2.079880] RAMDISK: gzip image found at block 0 [ 2.599184] VFS: Mounted root (ext2 filesystem) on device 1:0. [ 2.606361] Freeing init memory: 312K mount: mounting none on /var/shm failed: No such file or directory :: :: Enabling hot-plug : [SUCCESS] :: :: : Populating /dev : [SUCCESS] [SUCCESS] :: :: :: Setting PATH :: : syslogd : [SUCCESS] : telnetd : [SUCCESS] Please press Enter to activate this console.