2008-01-15 05:56:56 partitioning ram
Paolo Chiesa (ITALY)
Message: 49584
Hi,
I have a blackfin BF537-STAMP board with uClinux 1.1 RC3 distibution.
I need to allocate a precise part of RAM to store some data not to be touched by Linux.
I want to define a start address and size of this partition.
How can I realize it?
Thank you for help,
PAOLO
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2008-01-15 06:17:47 Re: partitioning ram
Mike Frysinger (UNITED STATES)
Message: 49591 currently, you cannot do this. the closest you can get is documented here:
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2008-01-29 05:22:58 Re: partitioning ram
Yi Li (CHINA)
Message: 50268 Hi Paolo,
Just FYI that we have implemented "memmap=" kernel option which can meet your requirement of:
"I need to allocate a precise part of RAM to store some data not to be touched by Linux.
I want to define a start address and size of this partition."
Documentation/kernel-parameters.txt:
memmap=nn[KMG]@ss[KMG]
[KNL] Force usage of a specific region of memory
Region of memory to be used, from ss to ss+nn.
memmap=nn[KMG]$ss[KMG]
[KNL,ACPI] Mark specific memory as reserved.
Region of memory to be used, from ss to ss+nn.
-Yi