Table of Contents
Advertisement
3 . 2 S y s te m Wr i te P ro t e c t i o n
The AM4024(E) provides write protection for non-volatile memories via the DIP switch SW2, switch 3,
the uEFI Shell and a backplane pin. If one of these sources is enabled, the system is write protected.
Please contact Kontron for further information before using these functions.
3 . 3 A M 4 0 24 ( E ) - S p e c i f i c Re g i s te r s
Table 24: AM4024(E)-Specific Registers
ADDRESS
0x284
0x285
0x288
0x28A
0x28C
0x28D
0x290
0x291
0x292
3.3.1 Wr ite Protection Register (WPROT)
The Write Protection Register holds the write protect signals for non-volatile devices.
Table 25: Write Protection Register (WPROT)
ADDRESS
BIT
7
NAME
SWP
ACCESS
R
RESET
0
BITFIELD
7
SWP
System write protection status:
0 = Onboard non-volatile memory devices not write protected
1 = Onboard non-volatile memory devices wr ite protected
3
SFWP
Reser ved
2
DSWP
This bit reflects the state of the system write protection via DIP switch SW2, switch 3:
0 = System not write protected via DIP switch
1 = System wr ite protected
1
BSWP
This bit reflects the state of the system write protection via backplane (SYS_WP#):
0 = System not write protected via backplane
1 = System wr ite protected
0
SSWP
This bit reflects the state of the system write protection via sof tware:
0 = System devices not write protected via sof tware
1 = System wr ite protected
If this bit is programmed once, it cannot be reprogrammed.
www.kontron.com
Write Protection Register (WPROT)
Reset Status Register (RSTAT)
Board ID High-Byte Register (BIDH)
Geographic Addressing Register (GEOAD)
Watchdog Timer Control Register (WTIM)
Board ID Low-Byte Register (BIDL)
LED Conf iguration Register (LCFG)
LED Control Register (LCTRL)
General Purpose Output Register (GPOUT)
6
5
Reserved
R
000
DEVICE
0x284
4
3
2
SFWP
DSWP
R/W
R
0
0
DESCRIPTION
User Guide
AM4024(E)
1
0
BSWP
SSWP
R
R/W
0
0
42
Advertisement
Table of Contents
