NSLU2-Linux

April 15, 2007, at 06:41 AM by Rob Lockhart -- added note about 256MiB

Added line 26:

Note also that default NSLU2 comes with 32MiB even though the range above for memory implies 256MiB space.

October 10, 2004, at 01:01 AM by tman --

Changed lines 5-7 from:

0x00000000	256	SDRAM (cached) ***
0x10000000	256	SDRAM (alias)
0x20000000	256	SDRAM (uncached)

to:

0x00000000	32	SDRAM (cached) ***
0x10000000	32	SDRAM (alias)
0x20000000	32	SDRAM (uncached)

Added line 17:

Changed lines 22-25 from:

When the configuration register is set to logic 0 the SDRAM occupies the lowest 256 MB of address.

see page 205 of the intel developer's manual for the MUCH more detailed version. :)

to:

When the configuration register is set to logic 0, the SDRAM occupies the lowest 256 MB of address.

Changed line 24 from:

and, of course, the NSLU2 only has 32MB of RAM. :)

to:

see page 205 of the Intel developer's manual for the MUCH more detailed version. :)

September 13, 2004, at 05:19 AM by ka6sox --

Changed line 1 from:

this is taken out of the RedBoot code, and is more or less correct:

to:

This is taken out of the RedBoot code, and is more or less correct:

Changed lines 3-15 from:

Physical Address Size (MB) Description

0x00000000 256 SDRAM (cached) ***
0x10000000 256 SDRAM (alias)
0x20000000 256 SDRAM (uncached)
:0x48000000 64 PCI Data
:0x50000000 16 Flash (CS0)
:0x51000000 112 CS1 - CS7
:0x60000000 64 Queue Manager
:0xC0000000 1 PCI Controller
:0xC4000000 1 Exp. Bus Config
:0xC8000000 1 Misc IXP425 IO
:0xCC000000 1 SDRAM Config

to:

Physical Address	Size (MB)	Description
0x00000000	256	SDRAM (cached) ***
0x10000000	256	SDRAM (alias)
0x20000000	256	SDRAM (uncached)
0x48000000	64	PCI Data
0x50000000	16	Flash (CS0)
0x51000000	112	CS1 - CS7
0x60000000	64	Queue Manager
0xC0000000	1	PCI Controller
0xC4000000	1	Exp. Bus Config
0xC8000000	1	Misc IXP425 IO
0xCC000000	1	SDRAM Config

September 13, 2004, at 05:05 AM by ka6sox --

Changed line 1 from:

this is taken out of the RedBoot code, and is more or less correct:

to:

this is taken out of the RedBoot code, and is more or less correct:

September 13, 2004, at 05:04 AM by ka6sox --

Changed lines 9-10 from:

0x50000000 16 Flash (CS0 ?): 0x51000000 112 CS1 ? - CS7 ?\\

to:

0x50000000 16 Flash (CS0): 0x51000000 112 CS1 - CS7\\

Changed line 14 from:

:0xC8000000 1 Misc IXP425 IO\\

to:

:0xC8000000 1 Misc IXP425 IO\\

Changed lines 19-22 from:

-When the configuration register is set to logic 1, the Expansion Bus occupies the lowest 256 MB of address space. -When the configuration register is set to logic 0 the SDRAM occupies the lowest 256 MB of address.

to:

When the configuration register is set to logic 1, the Expansion Bus occupies the lowest 256 MB of address space.
When the configuration register is set to logic 0 the SDRAM occupies the lowest 256 MB of address.

Changed line 28 from:

[http://groups.yahoo.com/group/nslu2-linux/message/1303]

to:

[http://groups.yahoo.com/group/nslu2-linux/message/1303]

September 13, 2004, at 04:57 AM by ka6sox --

Changed lines 27-29 from:

and, of course, the NSLU2 only has 32MB of RAM. :)

to:

and, of course, the NSLU2 only has 32MB of RAM. :)

[http://groups.yahoo.com/group/nslu2-linux/message/1303]

September 13, 2004, at 04:56 AM by ka6sox --

Changed lines 4-15 from:

--------- -----------

0x00000000 256 SDRAM (cached) **** 0x10000000 256 SDRAM (alias) 0x20000000 256 SDRAM (uncached) 0x48000000 64 PCI Data 0x50000000 16 Flash (CS0 ?) 0x51000000 112 CS1 ? - CS7 ? 0x60000000 64 Queue Manager 0xC0000000 1 PCI Controller 0xC4000000 1 Exp. Bus Config 0xC8000000 1 Misc IXP425 IO 0xCC000000 1 SDRAM Config

to:

0x00000000 256 SDRAM (cached) ***
0x10000000 256 SDRAM (alias)
0x20000000 256 SDRAM (uncached)
:0x48000000 64 PCI Data
:0x50000000 16 Flash (CS0 ?)
:0x51000000 112 CS1 ? - CS7 ?
:0x60000000 64 Queue Manager
:0xC0000000 1 PCI Controller
:0xC4000000 1 Exp. Bus Config
:0xC8000000 1 Misc IXP425 IO
:0xCC000000 1 SDRAM Config

Changed line 17 from:

The lowest 256MB of address space is configurable based on the value

to:

***The lowest 256MB of address space is configurable based on the value

Changed lines 27-29 from:

and, of course, the NSLU2 only has 32MB of RAM. :)

to:

and, of course, the NSLU2 only has 32MB of RAM. :)

September 13, 2004, at 04:39 AM by ka6sox --

Changed lines 1-29 from:

Describe MemoryMap here.

to:

this is taken out of the RedBoot code, and is more or less correct:

Physical Address Size (MB) Description

--------- -----------

0x00000000 256 SDRAM (cached) **** 0x10000000 256 SDRAM (alias) 0x20000000 256 SDRAM (uncached) 0x48000000 64 PCI Data 0x50000000 16 Flash (CS0 ?) 0x51000000 112 CS1 ? - CS7 ? 0x60000000 64 Queue Manager 0xC0000000 1 PCI Controller 0xC4000000 1 Exp. Bus Config 0xC8000000 1 Misc IXP425 IO 0xCC000000 1 SDRAM Config

The lowest 256MB of address space is configurable based on the value

of a configuration register located in the Expansion Bus Controller: -When the configuration register is set to logic 1, the Expansion Bus occupies the lowest 256 MB of address space. -When the configuration register is set to logic 0 the SDRAM occupies the lowest 256 MB of address.

see page 205 of the intel developer's manual for the MUCH more detailed version. :)

and, of course, the NSLU2 only has 32MB of RAM. :)

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