2.6.0 incorrect memory sizing (without a full BIOS)..

[Dave Airlie]

Hi all,
	I've got an internal development board based on the Intel 815
chipset and the Intel ACSFL mini-BIOS for embedded systems, and then using
grub 0.93 to boot Linux.

under 2.4 my memory is correctly sized at 256MB, but under 2.6 I'm only
seeing 64MB,

2.6 gives:
BIOS-provided physical RAM map:
 BIOS-88: 0000000000000000 - 000000000009f000 (usable)
 BIOS-88: 0000000000100000 - 00000000040ffc00 (usable)
64MB LOWMEM available

2.4 gives:
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
 BIOS-e820: 00000000000e0000 - 0000000000100000 type 5
 BIOS-e820: 0000000000100000 - 000000000ff00000 (usable)
 BIOS-e820: 000000000ff00000 - 0000000010000000 (reserved)
 BIOS-e820: 00000000fec00000 - 00000000fec00400 type 6
 BIOS-e820: 00000000fee00000 - 00000000fee00400 type 7
 BIOS-e820: 00000000fff00000 - 0000000100000000 type 5

So is this 2.6 just being more fussy about the contents of the e820 that
my "BIOS" is supplying and falling back to the old style detection?

Dave.

-- 
David Airlie, Software Engineer
http://www.skynet.ie/~airlied / airlied at skynet.ie
pam_smb / Linux DECstation / Linux VAX / ILUG person

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