User manual
U-Boot for MPL SBC
User Manual
2003 by MPL AG
5
MEH-10082-002 Rev. D
High-Tech • Made in Switzerland
2. General Information and Specifications
This chapter provides a general overview over the U-Boot and its features. Please note that some of these features
(such as SCSI, VGA) are board depended and may not apply to your MPL Single Board Computer.
2.1 Board depending Features
Following table lists the implemented Features of the currently available MPL Single Board Computers:
Features PIP405 MIP405 MIP405T VCMA9
Initialization / Power-On Self Test
SDRAM
√
√√
√√
√√
√√
√√
√√
√√
√
Ethernet controller
√
√√
√√
√√
√√
√√
√√
√√
√
Serial lines
√
√√
√√
√√
√√
√√
√√
√√
√
IDE controller
√
√√
√√
√√
√√
√√
√
N/A
USB controller
√
√√
√√
√√
√
N/A
X
SCSI controller
√
√√
√
1
11
1
N/A N/A N/A
Display controller
√
√√
√
1
11
1
√
√√
√
2
22
2
√
√√
√
2
22
2
X
Keyboard controller
√
√√
√
1
11
1
N/A N/A N/A
Boot device support:
On-board Flash
√
√√
√√
√√
√√
√√
√√
√√
√
Serial Line
√
√√
√√
√√
√√
√√
√√
√√
√
Ethernet
√
√√
√√
√√
√√
√√
√√
√√
√
IDE Device
√
√√
√√
√√
√√
√√
√
N/A
SCSI Device
√
√√
√
1
11
1
N/A N/A N/A
ATAPI Device (CD-ROM)
√
√√
√√
√√
√√
√√
√
N/A
Floppy Disk
√
√√
√
N/A N/A N/A
USB.
√
√√
√√
√√
√
N/A
X
Bootloader Update:
Image in the Memory (loadable from serial line, Ethernet etc)
√
√√
√√
√√
√√
√√
√√
√√
√
MPS (Multi Purpose Socket)
√
√√
√√
√√
√
N/A
√
√√
√
3
33
3
Miscellaneous:
RTC support.
√
√√
√√
√√
√√
√√
√
4
44
4
√
√√
√
4
44
4
Legend:
√
√√
√ Supported
X Currently Not Supported
N/A Not Available
Notes:
1. Only if populated
2. Supports PC104 Plus Cards with C&T69000 Display controller
3. Only with VCMA9-BB
4. Only with external back-up Battery
2.2 Common Features
Configuration:
• Various Options can be set by Environment variables.
• Environment variables are permanently stored in the on-board I2C EEPROM
• Environment variables are protected with a CRC32 checksum
Kernel booting:
• Supports compressed (gzip) kernel images.
• Images are checked with a CRC32 checksum prior of booting.
• Autoboot option.
• Boot arguments can be stored in the environment variables.
Common Features for all
• Monitor Functions