Title:
INFORMATION PROCESSING SPACE MANAGEMENT METHOD, EXTERNAL DEVICE, AND INFORMATION PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/069587
Kind Code:
A1
Abstract:
The method comprises: a dedicated loader loading step for loading a dedicated loader (123) into 0 MB-1 MB of a RAM (12) from a PCI (2) in response to startup of the BIOS; a management file loading step for setting a DPL of "0" in 1 MB-100 MB of the RAM (12), in which a management file (125) for monitoring access to 1 MB-100 MB of the OS loaded into 101 MB-4 GB of the RAM (12) is loaded by the dedicated loader (123) into 1 MB-100 MB from the PCI (2); and an access protection information setup step for setting a DPL of "2" or a DPL of "3" in 101 MB-4 GB, between loading of the management file (125) and loading of the OS. In response to startup of the BIOS, a secure area is created in a first area within the main memory, and the access protection information is differentiated, disabling improper access from a second area and ensuring a secure area within the main memory.
Inventors:
SUGINAKA JUNKO (JP)
Application Number:
PCT/JP2012/078575
Publication Date:
May 16, 2013
Filing Date:
November 05, 2012
Export Citation:
Assignee:
SUGINAKA JUNKO (JP)
International Classes:
G06F21/57
Domestic Patent References:
| WO2009113394A1 | 2009-09-17 |
Foreign References:
| US20050005076A1 | 2005-01-06 | |||
| JP2008269288A | 2008-11-06 |
Attorney, Agent or Firm:
ITOH TAKAO (JP)
Takao Ito (JP)
Takao Ito (JP)
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Claims:
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