"saveenv" won't write the environment out to disk. $ sudo dd if=/dev/zero of=/dev/sde seek=1 bs=512 count=3999 //wiping out area just to make sure no garbage is picked up.$ sudo dd if=bl1.HardKernel of=/dev/sde seek=1 iflag=dsync oflag=dsync$ sudo dd if=bl2.HardKernel of=/dev/sde seek=31 iflag=dsync oflag=dsync$ sudo dd if=u-boot-dtb.bin of=/dev/sde seek=63 iflag=dsync oflag=dsync$ sudo dd if=tzsw.HardKernel of=/dev/sde seek=2111 iflag=dsync oflag=dsync Fail: git://git.denx.de/u-boot.gitcommit 47d8ae4069b47ce966c0c5e0d8dd041e69ee1f86*****U-Boot 2015.04-rc2-00081-g47d8ae4 (Feb 25 2015 - 12:12:40) CPU: Exynos4412@1000MHzModel: Odroid based on Exynos4412DRAM: 2 GiBBoard PMIC initMMC: SAMSUNG SDHCI: 0, EXYNOS DWMMC: 1*** Warning - bad CRC, using default environment DFU alt info setting: doneNet: No ethernet found.Hit any key to stop autoboot: 0** Unrecognized filesystem type **** Unrecognized filesystem type **** Unrecognized filesystem type **Bad Linux ARM zImage magic!Odroid # saveenvSaving Environment to MMC...Writing to MMC(0)... failedOdroid # mmc infoDevice: SAMSUNG SDHCIManufacturer ID: 3OEM: 5344Name: SU08GTran Speed: 50000000Rd Block Len: 512SD version 3.0High Capacity: YesCapacity: 7.4 GiBBus Width: 4-bitErase Group Size: 512 BytesOdroid # mmc listSAMSUNG SDHCI: 0 (SD)EXYNOS DWMMC: 1Odroid # mmc part Partition Map for MMC device 0 -- Partition Type: DOS Part Start Sector Num Sectors UUID Type** Can't read partition table on 0:0 **Odroid # mmc hwpartition checkPartition configuration: No enhanced user data area No GP1 partition No GP2 partition No GP3 partition No GP4 partitioneMMC >= 4.4 required for enhanced user data areaFailed!Odroid # version U-Boot 2015.04-rc2-00081-g47d8ae4 (Feb 25 2015 - 12:12:40)armv7l-unknown-linux-gnueabihf-gcc (GCC) 5.0.0 20150221 (experimental)GNU ld (GNU Binutils) 2.25.51.20150221Odroid # fstype mmc 0:0 ** ext4fs_devread read error - blockFailed to mount ext2 filesystem...** Unrecognized filesystem type **Odroid # bdinfoarch_number = 0x000010C1boot_params = 0x40000100DRAM bank = 0x00000000-> start = 0x40000000-> size = 0x10000000DRAM bank = 0x00000001-> start = 0x50000000-> size = 0x10000000DRAM bank = 0x00000002-> start = 0x60000000-> size = 0x10000000DRAM bank = 0x00000003-> start = 0x70000000-> size = 0x10000000DRAM bank = 0x00000004-> start = 0x80000000-> size = 0x10000000DRAM bank = 0x00000005-> start = 0x90000000-> size = 0x10000000DRAM bank = 0x00000006-> start = 0xA0000000-> size = 0x10000000DRAM bank = 0x00000007-> start = 0xB0000000-> size = 0x0FF00000current eth = unknownip_addr = <NULL>baudrate = 115200 bpsTLB addr = 0xBFEF0000relocaddr = 0xBDE43000reloc off = 0x7A043000irq_sp = 0xB8E3D860sp start = 0xB8E3D850*****Ignore the "unrecognized filesystem type" stuff. I'm using ext4.mmc hwpartition only used for eMMC? Success:https://github.com/hardkernel/u-boot.gitcommit 33e05ffb159141b640571e91470172d83a2a1273*****U-Boot 2010.12-svn (May 12 2014 - 15:05:46) for Exynox4412
CPU: S5PC220 [Samsung SOC on SMP Platform Base on ARM CortexA9]APLL = 1000MHz, MPLL = 880MHzDRAM: 2 GiB PMIC VERSION : 0x00, CHIP REV : 3TrustZone Enabled BSPBL1 version: 20121128 Checking Boot Mode ... SDMMCMMC Device 0: 7580 MBMMC Device 1 not found*** Warning - using default environmentUSB3503 NINT = OUTPUT LOW!ModeKey Check... run normal_bootNo ethernet found.Hit any key to stop autoboot: 0Exynos4412 # wipeenv 0spot on!0: wipeenv1:0MMC Device 1 not foundWiping u-boot env at MMC: 0Exynos4412 # mmcinfoDevice: S3C_HSMMC2Manufacturer ID: 3OEM: 5344Name: SU08G Tran Speed: 0Rd Block Len: 512SD version 2.0High Capacity: YesSize: 0MB (block: 7580)Bus Width: 4-bitBoot Partition Size: 0 KBExynos4412 # saveenvSaving Environment to SMDK bootable device...done*****