Hello all, I have a Mycloud home that has unfortunately stopped working. I removed the attached hard drive to try to recover data with no luck. However once I had the Mycloud home apart I noticed that it had 4 pin headers for a serial connection to be established. Luckily for me I have the serial to USB cable that I used on my pogoplug which ended up working. Upon powering the board on I realized that it actually had two different boot loaders preinstalled. One of them appears to be a u-boot version. This got me excited wondering if a Linux distro could be easily installed? or if it would have to have a kernel /rootfs custom built. I can provide more print out information if needed. Any advice or suggestions would be really appreciated .Thank you.
This is what prints when you initially turn it on,
This is what happens when you type help with only the first bootloader active
This is board infor
this is me loading the 2nd bootloader
version
this is help with 2 bootloaders active
this is printenv
CPU : Cortex-A53 quad core - AARCH32 Board: Realtek QA Board
This is what prints when you initially turn it on,
C1:80000000
C2
?
C1:80000000
C2
?
C1:80000000
C2
?
C1:80000000
C2
?
C1:80000000
C2
?
C3h
hwsetting size: 000005C0
C4
f
5-5
Goto FSBL: 0x10100000
<=============================================>
fsbl_main: sys_secure_type = 0x0000BEEE
fsbl_main: sys_boot_type = 0x00000001
fsbl_main: sys_boot_enc = 0x00000000
fsbl_main: sys_bisr_done = 0x00000000
sys_hwsetting_size:00000600
sys_bootcode_size:00067440
sys_secure_fsbl_size:00010B00
sys_secure_os_size:00000000
sys_bl31_size:00005040
sys_rsa_key_fw_size:00000000
sys_rsa_key_tee_size:00000000
sys_rescue_size:00026360
HwSetting:
hwsetting_blk_no:88120800
hwsetting_total_size:00000680
hwsetting_blk_count:00000680
Bootcode:
bootcode_blk_no:88120E80
bootcode_total_size:00067460
bootcode_blk_count:00067460
FSBL:
secure_fsbl_blk_no:881882E0
secure_fsbl_total_size:00010B20
secure_fsbl_blk_count:00010B20
TEE OS:
secure_os_blk_no:88198E00
secure_os_total_size:00000000
secure_os_blk_count:00000000
BL31:
bl31_blk_no:88198E00
bl31_total_size:00005060
bl31_blk_count:00005060
RSA Key Fw:
rsa_key_fw_blk_no:8819DE60
rsa_key_fw_total_size:00000000
rsa_key_fw_blk_count:00000000
RSA Key TEE:
rsa_key_tee_blk_no:8819DE60
rsa_key_tee_total_size:00000000
rsa_key_tee_blk_count:00000000
Rescue:
rescue_blk_no:8819DE60
rescue_total_size:00026380
rescue_blk_count:00026380
********** FW_TYPE_BOOTCODE **********
fwInfo->fwType: 00000001
fwInfo->isGolden: 00000001
fwInfo->ddrReadAddr: 00520000
fwInfo->ddrDestAddr: 00020000
fwInfo->flashType: 00000001
fwInfo->flashUnitSize: 00000001
fwInfo->flashOffset: 88120E80
fwInfo->dataSize: 00067460
body_size:00067440
flash_unit_no:88120E80
flash_unit_count:00067460
real_size:00067418
sha256 Fw
j bootcode jump address:00020000
64b
4.1.4
CPU : Cortex-A53 quad core - AARCH32
Board: Realtek QA Board
[ERR] get_accessible_ddr_size: hw setting error. (impossible value 0x0)
[ERR] get_accessible_ddr_size: hw setting error. (impossible value 0x0)
DRAM: 0 Bytes
Watchdog: Disabled
Cache: Enabled
Non-Cache Region: 1 MB@0x07900000
nor flash id [0x00ef4014]
sector 256k en: 0
sector 64k en: 1
sector 32k en: 1
sector 4k en: 1
page_program : 1
max capacity : 0x00100000
spi type name : WINBOND_W25Q80BV_8Mbit
[SATA] enable SATA interface
[SATA] spread-spectrum disable
Factory: NOR
Factory: pp:0, seq#:0x1c, size:0x2400
------------can't find tmp/factory/000BootParam.h
Set HDMI TX OFF
In: serial
Out: serial
Err: serial
Net: Realtek PCIe GBE Family Controller mcfg = 0024
dev->name=r8168#0
*** Reboot-Action invalid ***
Hit Esc or Tab key to enter console mode or rescue linux: 0
------------can't find tmp/factory/recovery
======== Checking into android recovery ====
AHCI 0001.0301 32 slots 2 ports ? Gbps 0x3 impl SATA mode
flags: ncq pm led clo only pmp pio slum part
No port device detected!
Error, SATA device initialization failed!
bootr - boot realtek platform
Usage:
bootr [u/uz]
u - boot from usb
uz - boot from usb (use lzma image)
m - read fw from flash but boot manually (go all)
Enter console mode, disable watchdog ...
Realtek>
This is what happens when you type help with only the first bootloader active
Realtek> help b2ndbc - load 2nd stage bootcode bdinfo - print Board Info structure bootm - boot application image from memory bootr - boot realtek platform dcache - enable or disable data cache dhcp - boot image via network using DHCP/TFTP protocol env - environment handling commands factory - FACTORY sub system fatinfo - print information about filesystem fatload - load binary file from a dos filesystem fatls - list files in a directory (default /) fatwrite- write file into a dos filesystem fdt - flattened device tree utility commands gettime - get timer val elapsed go - start application at address 'addr' or start running fw goru - start rescue linux from usb gpt - GUID Partition Table help - print command description/usage i2c - I2C sub-system icache - enable or disable instruction cache keyset - keyset - write keyset file into factory area loady - load binary file over serial line (ymodem mode) md - memory display mtest - simple RAM read/write test mtest2 - simple RAM read/write test mw - memory write (fill) ping - send ICMP ECHO_REQUEST to network host reset - Perform RESET of the CPU rtkfat - Realtek FAT32 format utility v1.0 rtkfdt - RTK fdt utility rtkgpt - rtkgpt utility rtkrng - rng utility rtkspi - spi flash utility sata - SATA sub system saveenv - save environment variables to persistent storage source - run script from memory tftp - download image from TFTP server tftpput - TFTP put command, for uploading files to a server uart_write- for uart mp tool burn mac and sn key unzip - unzip a memory region usb - USB sub-system version - print monitor, compiler and linker version wdpp - Western Digital Boot Patition Tool
This is board infor
Realtek> bdinfo arch_number = 0x0000138A boot_params = 0x00100100 DRAM bank = 0x00000000 -> start = 0x00000000 -> size = 0x00000000 ethaddr = 00:00:C0:06:69:CE ip_addr = 192.168.100.1 baudrate = 115200 bps TLB addr = 0x000E0000 *** bdinfo pll *** SCPU PLL = 1201 MHz SCPU = 600 MHz ACPU PLL = 549 MHz ACPU = 549 MHz VCPU1 PLL = 594 MHz VCPU2 PLL = 675 MHz DDSA PLL = 432 MHz DDSB PLL = 432 MHz BUS PLL = 255 MHz BUS_H PLL = 459 MHz GPU PLL = 449 MHz VODMA PLL = 405 MHz *** bdinfo ddr *** DDR = 1600 MHz (0x1a) [ERR] get_ddr_size: hw setting error. (impossible value 0xf) [ERR] get_accessible_ddr_size: hw setting error. (impossible value 0x0) [ERR] get_ddr_size: hw setting error. (impossible value 0xf) [ERR] get_accessible_ddr_size: hw setting error. (impossible value 0x0) DDR SIZE = 0*2 = 0 MB (Evaluated from DC1 0xb8008004/0x18008740)
this is me loading the 2nd bootloader
Realtek> b2ndbc libfdt fdt_check_header(): FDT_ERR_BADMAGIC EXPORT ENV AT 0x10000000, ENV size info:0x00002000,0x00001ffc,0x00000004 rtk_preload_bootimages_spi : header info 0x00000600 0x00067440 0x00010b00 0x00000000 0x00005040 0x00000000 0x00000000 0x00026360 0x00000000 rtk_preload_bootimages_spi : load U-Boot 64 from 0x8819de60 to 0x01500000 with size 0x00026360 rtk_preload_bootimages_spi : load BL31 from 0x88198e00 to 0x10120000 with size 0x00005040 fdt_chosen: FDT_ERR_BADMAGIC copy_2nd_bootloader_and_run : src:0x01500000, dst:0x00021000, size:0x00028000 Jumping to 2nd bootloader... U-Boot 2015.07-g5a4a178-dirty (Jun 22 2016 - 11:33:46 +0800) CPU : Cortex-A53 Quad Core Board: Realtek QA Board [ERR] get_accessible_ddr_size: hw setting error. (impossible value 0x0) [ERR] Fall back to using CONFIG_SYS_RAM_DCU1_SIZE DRAM: 1 GiB mapping memory 0x20000000-0x40000000 non-cached In: serial Out: serial Err: serial Hit any key to stop autoboot: 0 rtk_plat_set_fw not port yet, use default configs Not raw Image, Starting Decompress Image.gz... Error: Bad gzipped data Decompress FAIL!! ERROR do_booti failed!
version
Realtek> ver U-Boot 2015.07-g5a4a178-dirty (Jun 22 2016 - 11:33:46 +0800) aarch64-linux-xgcc (Realtek ASDK64-4.9.3 Build 2180) 4.9.3 20150413 (prerelease) GNU ld (Realtek ASDK64-4.9.3 Build 2180) 2.24.0.20141017
this is help with 2 bootloaders active
Realtek> help ? - alias for 'help' base - print or set address offset bdinfo - print Board Info structure booti - boot arm64 Linux Image image from memory bootm - boot application image from memory bootr - boot realtek platform cachetest- Stress cache operation cmp - memory compare cp - memory copy dcache - enable or disable data cache editenv - edit environment variable env - environment handling commands erase - erase FLASH memory exit - exit script false - do nothing, unsuccessfully fdt - flattened device tree utility commands flinfo - print FLASH memory information gettime - get timer val elapsed gictest - Turn on GIC and send SGI to CPU go - start application at address 'addr' help - print command description/usage icache - enable or disable instruction cache loadb - load binary file over serial line (kermit mode) loadx - load binary file over serial line (xmodem mode) loady - load binary file over serial line (ymodem mode) loop - infinite loop on address range md - memory display mm - memory modify (auto-incrementing address) mw - memory write (fill) nm - memory modify (constant address) printenv- print environment variables protect - enable or disable FLASH write protection reset - Perform RESET of the CPU saveenv - save environment variables to persistent storage setenv - set environment variables setexpr - set environment variable as the result of eval expression showvar - print local hushshell variables source - run script from memory test - minimal test like /bin/sh true - do nothing, successfully version - print monitor, compiler and linker version
this is printenv
Realtek> printenv Security_Code=EXQ-PFX-DVC baudrate=115200 bna=0 bootcmd=bootr bootcode2nd_loadaddr=0x00021000 bootcode2ndtmp_loadaddr=0x01500000 bootdelay=0 bootstate=3 cbr=B ethact=r8168#0 ethaddr=00:00:C0:06:69:CE fdt_loadaddr=0x01F00000 fdtaddr=1f00000 filesize=A gatewayip=192.168.100.254 gpt_ver=3 ipaddr=192.168.100.1 kernel_loadaddr=0x03000000 mtd_part=mtdparts=rtk_nand: nbr=B netmask=255.255.255.0 rescue_audio=bluecore.audio rescue_dtb=rescue.sata.dtb rescue_rootfs=rescue.root.sata.cpio.gz_pad.img rescue_vmlinux=sata.uImage rootfs_loadaddr=0x02200000 serial=WCC7K4VNZ0L8 serverip=192.168.100.2 ver=4.1.4 Environment size: 659/8188 bytes