WO2000019317A8 - Protection of boot block code while allowing write accesses to the boot block - Google Patents

Protection of boot block code while allowing write accesses to the boot block

Info

Publication number
WO2000019317A8
WO2000019317A8 PCT/US1999/022669 US9922669W WO0019317A8 WO 2000019317 A8 WO2000019317 A8 WO 2000019317A8 US 9922669 W US9922669 W US 9922669W WO 0019317 A8 WO0019317 A8 WO 0019317A8
Authority
WO
WIPO (PCT)
Prior art keywords
boot block
code
region
boot
block code
Prior art date
Application number
PCT/US1999/022669
Other languages
French (fr)
Other versions
WO2000019317A1 (en
Inventor
Gregory L Miller
Original Assignee
Phoenix Tech Ltd
Gregory L Miller
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22589697&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2000019317(A8) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Phoenix Tech Ltd, Gregory L Miller filed Critical Phoenix Tech Ltd
Priority to AU10977/00A priority Critical patent/AU1097700A/en
Priority to JP2000572756A priority patent/JP4668416B2/en
Publication of WO2000019317A1 publication Critical patent/WO2000019317A1/en
Publication of WO2000019317A8 publication Critical patent/WO2000019317A8/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1415—Saving, restoring, recovering or retrying at system level
    • G06F11/1433—Saving, restoring, recovering or retrying at system level during software upgrading

Abstract

An apparatus and a method for protecting boot block code while allowing updating to BIOS code during a flash BIOS operation. The boot block code is stored in a boot block or boot region of a flash part, and then a copy of the boot block code is written into another region of the flash part. The image of the boot block code in the another region is compared with the boot block code in the boot block, and if there is a match, the boot block region is unprotected, thereby allowing an update of code in the boot block. The boot block code of the flashed-in BIOS image in the boot block region is compared with the copy of the boot block code in the another region, and if there is a match, the code in the boot block region is protected. If there is not a match or if a power failure occurs, the system is booted up using the boot block code in the another region.
PCT/US1999/022669 1998-09-30 1999-09-30 Protection of boot block code while allowing write accesses to the boot block WO2000019317A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU10977/00A AU1097700A (en) 1998-09-30 1999-09-30 Protection of boot block code while allowing write accesses to the boot block
JP2000572756A JP4668416B2 (en) 1998-09-30 1999-09-30 Protecting boot block code when enabling write access to the boot block

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/163,360 1998-09-30
US09/163,360 US6308265B1 (en) 1998-09-30 1998-09-30 Protection of boot block code while allowing write accesses to the boot block

Publications (2)

Publication Number Publication Date
WO2000019317A1 WO2000019317A1 (en) 2000-04-06
WO2000019317A8 true WO2000019317A8 (en) 2001-03-15

Family

ID=22589697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/022669 WO2000019317A1 (en) 1998-09-30 1999-09-30 Protection of boot block code while allowing write accesses to the boot block

Country Status (5)

Country Link
US (1) US6308265B1 (en)
JP (1) JP4668416B2 (en)
AU (1) AU1097700A (en)
TW (1) TW464827B (en)
WO (1) WO2000019317A1 (en)

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Also Published As

Publication number Publication date
TW464827B (en) 2001-11-21
US6308265B1 (en) 2001-10-23
JP4668416B2 (en) 2011-04-13
JP2002526828A (en) 2002-08-20
AU1097700A (en) 2000-04-17
WO2000019317A1 (en) 2000-04-06

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