WRT54GL v1.0 and the 64MB RAM upgrade: [partial] success

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booBot
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Joined: 22 Sep 2006
Posts: 12

PostPosted: Thu May 17, 2007 13:04    Post subject: WRT54GL v1.0 and the 64MB RAM upgrade: [partial] success Reply with quote
I have just replaced the original Hynix HY5DU281622ET-J chip with the Micron's 46V32M16-5B F (the smallest SDRAM I could find).

I expected to be having the full 64MB, but instead I have only half of that - 32MB.

My dmesg reports:
...
Determined physical RAM map:
memory: 02000000 @ 00000000 (usable)
on node 0 totalpages 8192
zone (0): 8192
zone (1): 0
zone (2): 0
...
memory: 30420k/32768k available
...


Is it possible to reclaim the remaining half as well?

I did not change any NVRAM variable yet.
Should I force it to recalibrate the DRAM timings?

(My WRT54GL v1.0 is SN#CLA7A0F101902)

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OpenWRT RC6 powered WRT54GL v1.0 (64MB RAM mod)
RT31P2-EU(v1.30.07/v3.1.09LId)
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booBot
DD-WRT Novice


Joined: 22 Sep 2006
Posts: 12

PostPosted: Mon May 21, 2007 13:09    Post subject: Re: WRT54GL v1.0 and the 64MB RAM upgrade: [partial] success Reply with quote
The nvram show | grep sdram reports:
sdram_config=0x0062
sdram_refresh=0x0000
sdram_ncdl=0xfd0009
sdram_init=0x010b

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OpenWRT RC6 powered WRT54GL v1.0 (64MB RAM mod)
RT31P2-EU(v1.30.07/v3.1.09LId)
Vaako
DD-WRT User


Joined: 10 Jun 2009
Posts: 333

PostPosted: Wed Dec 29, 2010 21:33    Post subject: Reply with quote
What do you have to do to let it use the whole 64mb of ram?
Are there any CFE nvram settings you have to change?

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