Kontron AM4140 U-Boot Bootloader - Manual (Page 35)

AM4140 U-Boot Bootloader U-Boot Usage
ID 1052-0281, Rev. 1.0 Page 35
P R E L I M I N A R Y
6.2.1 Overview of Board Configuration Options
The FCLKA option provides the following parameters:
• auto: The Module Management Controller configures the PCI Express reference
clock (FCLKA) via E-Keying
• in: AM4140 uses the PCI Express reference clock from the AMC Card-edge con-
nector (FCLKA)
• out: AM4140 uses the local PCI Express reference clock and generates the PCI Ex-
press reference clock to the AMC Card-edge connector (FCLKA)
• local: AM4140 uses the local PCI Express reference clock and the AMC clock
(FCLKA) is disabled
Table 3: Overview of Board Configuration Options
AMC PORT CONFIGURATION USING THE
U-BOOT “sconf info” BASE CONFIGURATIONS
FURTHER BOARD CONFIGURATION
OPTIONS DEPENDING ON THE BASE
CONFIGURATION
U-Boot
“sconf”
Base Conf.
Port 0 Port 1 Ports 4-7 Ports 8-11
GBE
PORT 1
SRIO
SYSTEM
SIZE
SRIO
MODE
FCLKA
PCIe
Ref. Clock
0 GbE GbE [email protected] [email protected] -- small/
large
host/
agent
--
1 GbE GbE [email protected] GbE 4x1 -- small/
large
host/
agent
--
2 GbE GbE [email protected] PCIe -- small/
large
host/
agent
--
3 GbE [GbE] [email protected] [email protected] front/
rear
small/
large
host/
agent
--
4 GbE [GbE] [email protected] XAUI front/
rear
small/
large
host/
agent
--
5 GbE [GbE] [email protected] PCIe front/
rear
small/
large
host/
agent
auto/in/
out/local
6 GbE [GbE] PCIe PCIe front/
rear
-- -- auto/in/
out/local
7 GbE [GbE] PCIe XAUI front/
rear
-- -- auto/in/
out/local
Note ...
[GbE] indicates that the DTSEC1 used can be redirected to the front panel
connector J2(GbE B). This may be required for board configurations which
otherwise do not provide front Ethernet connectivity.