| To: | linux-mips@linux-mips.org |
|---|---|
| Subject: | Linux Boot RAM Determination |
| From: | Sean Parker <supinlick@yahoo.com> |
| Date: | Tue, 17 Jun 2008 10:45:01 -0700 (PDT) |
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| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| Reply-to: | supinlick@yahoo.com |
| Sender: | linux-mips-bounce@linux-mips.org |
Hello -
We're developing a PMC-Sierra RM9000 system, and when Linux boots it seems to
only see 256M RAM (cat /proc/meminfo -> MemTotal=256M), despite a Crucial 1GB
double-sided SODIMM card.
The boot code is PMON, and it recognizes all 1GB (dimm0:2 Ranks each 512MB)
and prints as much when it's done.
Is there a setting in the Linux source (we're using a single elf image with
ramfs integrated) that might be limiting the MemTotal/RAM size found by Linux?
I couldn't find anywhere in the Linux code (patched by PMC) that mentions
reading the DDR DCR's to inspect what the configured RAM sizes/offsets are. Any
ideas?
Thanks and God Bless,
Sean Parker
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