DHCOM iMX25-D2
Bootloader U-Boot
Console commands
NAND Flash
Nand Flash Read
nand read <SDRAM address> <NAND Flash address> <Bytes>
Example: nand read 80000000 400000 b40000
Description: Copies 11,25MByte from NAND Flash address 0x40_0000 to SDRAM address 0x8000_0000
Nand Flash Erase
nand erase <Block base address> <Bytes>
Example: nand erase 400000 40000
Description: Deletes NAND Flash content from address 0x40_0000 to 0x43_FFFF
Note: The Bytes information needs to be block size aligned!
Nand Flash Write
nand write <SDRAM address> <NAND Flash address> <Bytes>
Example: nand write 80000000 400000 b40000
Description: Cpoies 11,25MByte from SDRAM address 0x8000_0000 to NAND Flash address 0x40_0000
Note: The Bytes information needs to be page size aligned!
Show bad NAND Flash blocks
nand bad
Description: Shows the bad NAND Flash blocks.
Show NAND FLash content
nand dump <NAND Flash address>
Example: nand dump 400000
Description: Shows the content of the specified NAND Flash block
LCD contoller
Show LCD controller settings
lcdinfo
Example:
Display Resolution: 800 x 480 pixels Display Type: Active Color Display Pixel Clock: 22 MHz Bits per Pixel: 16 Bits/Pixel Pixel Polarity: Active High VSYNC Polarity: Active Low HSYNC Polarity: Active Low Clock Polarity: Pos. Edge Output En Polarity: Active High HSYNC Puls Width: 64 Clock Cycles HSYNC Back Porch: 86 Clock Cycles HSYNC Front Porch: 42 Clock Cycles VSYNC Puls Width: 2 Line Cycles VSYNC Back Porch: 33 Line Cycles VSYNC Front Porch: 10 Line Cycles
GPIO's
Show DHCOM GPIO settings
gpioinfo
Example:
GPIO_A: Direction = Input
State = 0
GPIO_B: Direction = Input
State = 0
GPIO_C: Direction = Input
State = 0
GPIO_D: Direction = Input
State = 0
GPIO_E: Direction = Input
State = 1
GPIO_F: Direction = Input
State = 1
GPIO_G: Direction = Output
State = 1
GPIO_H: Direction = Input
State = 1
GPIO_I: Direction = Input
State = 1
GPIO_J: Direction = Input
State = 1
GPIO_K: Direction = Input
State = 0
SD/MMC Card
Switch between MicroSD and SD Slot
mmcswitch <Slot number>
Example: mmcswitch 2
Description: Switch between SD/MMC Slots: 1 --> SD/MMC Slot, 2 --> MicroSD Slot
Initialize SD/MMC Card
mmcinit
Description: Initialize new inserted SD Card
Filesystem
Show Filesystem information
fatinfo <interface> <device>
Example: fatinfo mmc 1
Interface: MMC
Device 1: Vendor: Man 094150 Snr 266e068c Rev: 1.0 Prod: AF UD
Type: Removable Hard Disk
Capacity: 121.2 MB = 0.1 GB (248320 x 512)
Partition 1: Filesystem: FAT16 "NO NAME "
List files
fatls <interface> <device> <directory>
Example 1: fatls mmc 1
Example 2: fatls mmc 1 /folder
Load Files from SD Card to SDRAM
fatload <interface> <device> <SDRAM address> <directory+filename>
Example 1: fatload mmc 1 80100000 nk.gz
Example 2: fatload mmc 1 80100000 /folder/nk.gz
Ethernet (TFTP)
Load File via TFTP to SDRAM
tftp <SDRAM address> <directory+filename>
Example: tftp 80100000 nk.gz
Example TFTP Server: "Winagents TFTP Server Manager"
Note: For TFTP download it is necessary to config the ENV variables "ipaddr" and "serverip"
Environment
Show ENV variables
printenv
bootdelay=0 baudrate=38400 ipaddr=192.168.55.230 serverip=192.168.55.36 gatewayip=192.168.55.36 netmask=255.255.255.0 frias=5 kernel=uImage bootargs=console=ttymxc0,115200 root=/dev/mmcblk0p2 nandbootwince=update;bootwince 00200000 splashimage=0x000c0000 save_ENV_to_flash=setenv ENVinFlash 1; saveenv ENVinFlash=1 ethaddr=00:04:a3:34:b6:0d ethact=FEC0 winceimagetype=nk.gz winceimagesize=00ba55ee loadaddr=00200000 bootcmd=run nandbootwince filesize=212050 Environment size: 449/262140 bytes
Set ENV variables
setenv <ENV name> <ENV value>
Example: setenv ipaddr 192.168.55.2
Note: If you need to edit "bootcmd" it is necessary to insert ";" between the unique commands. You can enter ";" at the command line with "\;".
Save ENV variables
saveenv
Update
iMX25_update.bmp file
For this update Type you need the "iMX25_update.bmp" file and the image file (e.g. nk.gz for WinCE) on the SD Card. After power on the update starts automatically. The "iMX25_update.bmp" file contains three pictures (Update in progress, Update done and Update error) which are shown on the display during the update process. The file contains also an argument which defines the update type (WinCE image, Linux image, ...). An exact description can be found on the iMX25CreateUpdateBmp manual.
It is also possible to call the "iMX25_update.bmp" update from the command line:
update
command line
It is possible to update the DHCOM i.MX25 Core Module form the command line without "iMX25_update.bmp" file. The advantage is the possibility to run multiple updates in series. This update type dosen't use the Display to show the progress. You need only the corresponding files on the SD Card for the update.
update <type> <filename>
Type:
wince = WinCE image update (default file names nk.gz or nk.bin)
linux = Linux image update (default file name uImage)
flash = Complete flash image update
bootloader = Bootloader update (default file name u-boot.bin)
splash = Bootbitmap update (default file name splash.bmp)
settings = Settings block update (default file name settings.bin)
I2C
List available devices
i2c probe
Valid chip addresses: 00 57 6F
WinCE
Registry Settings
LCD Controller
[HKEY_LOCAL_MACHINE\Drivers\Display\LCDC]
"PanelType"=dword:1 ; LCD Panel identifier
; Description: Set "PanelType" = 0 to use the bootloader LCD controller settings, which can be programmed to NAND Flash via settings.bin file.
[HKEY_LOCAL_MACHINE\SYSTEM\GDI\ROTATION]
"Angle"=dword:0 ; no rotation
; "Angle"=dword:5A --> 90 degrees rotated clockwise
; "Angle"=dword:B4 --> 180 degrees rotated clockwise
; "Angle"=dword:10E --> 270 degrees rotated clockwise
Task Bar Look
[HKEY_LOCAL_MACHINE\Explorer] “QVGA“=dword:00000001 ; Change Task bar style: 0 --> normal Windows look, 1 --> PDA look
