User Manual
BCM91125E
04/27/05
B ro a d c o m C o r p o r a t i o n
Document
91125E-UM100-R
Switch 1 Firmware Configuration
Page 11
S
WITCH
1 F
IRMWARE
C
ONFIGURATION
Table 7 lists how the firmware interprets the software configuration bits indicated by Switch 1. Once the user
determines a desired configuration, it can be hardcoded and the switch is available for other uses. It is read as
bits 31-28 of the system_configuration register (field config[5:2]).
Table 7: Switch 1 Firmware Configuration
SW1
value
Action
0x0
UART console, no PCI initialization
0x1
PromICE console, no PCI initialization
0x2*
UART console, PCI initialization
0x3
PromICE console, PCI initialization
0x6
UART console, PCI initialization, Hypertransport (HT) slave mode
0x7
UART console, no PCI initialization, do not read CFE environment variables. Use of this setting
is strongly discouraged.
0x8
UART console, PCI initialization, device download mode
0x9
UART console, PCI initialization, device reboot mode
0x14
UART console, program SPD EEPROM
* = recommended/default setting. All other settings are reserved.
