mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
84 lines
2.6 KiB
Text
84 lines
2.6 KiB
Text
Matrix Vision mvBlueLYNX-M7 (mvBL-M7)
|
|
-------------------------------------
|
|
|
|
1. Board Description
|
|
|
|
The mvBL-M7 is a 120x120mm single board computing platform
|
|
with strong focus on stereo image processing applications.
|
|
|
|
Power Supply is either VDC 12-48V or Pover over Ethernet (PoE)
|
|
on any port (requires add-on board).
|
|
|
|
2 System Components
|
|
|
|
2.1 CPU
|
|
Freescale MPC8343VRAGDB CPU running at 400MHz core and 266MHz csb.
|
|
512MByte DDR-II memory @ 133MHz.
|
|
8 MByte Nor Flash on local bus.
|
|
2 Vitesse VSC8601 RGMII ethernet Phys.
|
|
1 USB host controller over ULPI I/F.
|
|
2 serial ports. Console running on ttyS0 @ 115200 8N1.
|
|
1 SD-Card slot connected to SPI.
|
|
System configuration (HRCW) is taken from I2C EEPROM.
|
|
|
|
2.2 PCI
|
|
A miniPCI Type-III socket is present. PCI clock fixed at 66MHz.
|
|
|
|
2.3 FPGA
|
|
Altera Cyclone-II EP2C20/35 with PCI DMA engines.
|
|
Connects to dual Matrix Vision specific CCD/CMOS sensor interfaces.
|
|
Utilizes another 256MB DDR-II memory and 32-128MB Nand Flash.
|
|
|
|
2.3.1 I/O @ FPGA
|
|
2x8 Outputs : Infineon High-Side Switches to Main Supply.
|
|
2x8 Inputs : Programmable input threshold + trigger capabilities
|
|
2 dedicated flash interfaces for illuminator boards.
|
|
Cross trigger for chaining several boards.
|
|
|
|
2.4 I2C
|
|
Bus1:
|
|
MAX5381 DAC @ 0x60 for 1st digital input threshold.
|
|
LM75 @ 0x90 for temperature monitoring.
|
|
EEPROM @ 0xA0 for system setup (HRCW etc.) + vendor specifics.
|
|
1st image sensor interface (slave adresses depend on sensor)
|
|
Bus2:
|
|
MAX5381 DAC @ 0x60 for 2nd digital input threshold.
|
|
2nd image sensor interface (slave adresses depend on sensor)
|
|
|
|
3 Flash layout.
|
|
|
|
reset vector is 0xFFF00100, i.e. "HIGHBOOT".
|
|
|
|
FF800000 environment
|
|
FF802000 redundant environment
|
|
FF804000 u-boot script image
|
|
FF806000 redundant u-boot script image
|
|
FF808000 device tree blob
|
|
FF80A000 redundant device tree blob
|
|
FF80C000 tbd.
|
|
FF80E000 tbd.
|
|
FF810000 kernel
|
|
FFC00000 root FS
|
|
FFF00000 u-boot
|
|
FFF80000 FPGA raw bit file
|
|
|
|
mtd partitions are propagated to linux kernel via device tree blob.
|
|
|
|
4 Booting
|
|
|
|
On startup the bootscript @ FF804000 is executed. This script can be
|
|
exchanged easily. Default boot mode is "boot from flash", i.e. system
|
|
works stand-alone.
|
|
|
|
This behaviour depends on some environment variables :
|
|
|
|
"netboot" : yes ->try dhcp/bootp and boot from network.
|
|
A "dhcp_client_id" and "dhcp_vendor-class-identifier" can be used for
|
|
DHCP server configuration, e.g. to provide different images to
|
|
different devices.
|
|
|
|
During netboot the system tries to get 3 image files:
|
|
1. Kernel - name + data is given during BOOTP.
|
|
2. Initrd - name is stored in "initrd_name"
|
|
3. device tree blob - name is stored in "dtb_name"
|
|
Fallback files are the flash versions.
|