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Michael Brown c692a690da [settings] Expose memory map via settings mechanism 
Allow memory map entries to be read using the syntax

  ${memmap/<region>.<properties>.<scale>}

where <region> is the index of the memory region, <properties> is a
bitmask where bit 0 represents the start address and bit 1 represents
the length (allowing the end address to be encoded by having both bits
0 and 1 set), and <scale> is the number of bits by which to shift the
result.

This allows for several values of interest to be encoded.  For
example:

  ${memmap/<region>.1.0:hexraw}   # 64-bit start address of <region>
  ${memmap/<region>.2.0:hexraw}   # 64-bit length of <region>, in bytes
  ${memmap/<region>.3.0:hexraw}   # 64-bit end address of <region>
  ${memmap/<region>.2.10:int32}   # Length of <region>, in kB
  ${memmap/<region>.2.20:int32}   # Length of <region>, in MB

The numeric encoding is slightly more sophisticated than described
here, allowing a single encoding to cover multiple regions.  (See the
source code for details.)  The primary use case for this feature is to
provide the total system memory size (in MB) via the "memsize"
predefined setting.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2013-08-12 22:00:36 +01:00
contrib [errdb] Strip platform error code for non-platform-generated errors 2013-04-29 15:36:32 +01:00
src [settings] Expose memory map via settings mechanism 2013-08-12 22:00:36 +01:00
COPYING Initial revision 2005-05-17 16:44:57 +00:00
COPYRIGHTS [build] Rename gPXE to iPXE 2010-04-19 23:43:39 +01:00
README [doc] Re-add README file 2010-05-28 00:03:47 +01:00

README 

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org