blob: c74ddaa6b8e0661c073f33a3e8afbfbeeef6c441 [file] [log] [blame]
;
; Copyright (c) 2011, Hewlett-Packard Company. All rights reserved.<BR>
;
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
LOCAL &fvbase &fvsig &fvsig &ffsoffset &ffsfilesize &ffsfileaddr
ENTRY &fvbase
&fvsig=Data.Long(a:&fvbase+0x28)
if &fvsig!=0x4856465F
(
print "FV does not have proper signature, exiting"
return
)
print "FV signature found"
&fvlen=Data.Long(a:&fvbase+0x20)
; first ffs file is after fv header, use headerlength field
&ffsoffset=(Data.Long(a:&fvbase+0x30)&0xffff)
; loop through ffs files
&ffsfilesize=1
while (&ffsfilesize!=0)&&(&ffsoffset<(&fvlen))
(
&ffsfileaddr=&fvbase+&ffsoffset
;print "found ffs file at &ffsfileaddr"
; process ffs file and increment by ffs file size field
gosub ProcessFfsFile &ffsfileaddr
&ffsfilesize=(Data.Long(a:&ffsfileaddr+0x14)&0x00ffffff)
;print "ffsfilesize is &ffsfilesize"
&ffsoffset=&ffsoffset+&ffsfilesize
&ffsfilesize=(Data.Long(a:&fvbase+&ffsoffset+0x14)&0x00ffffff)
;print "ffsfilesize now is &ffsfilesize"
if &ffsfilesize==0xffffff
(
enddo
)
; align to next 8 byte boundary
if (&ffsoffset&0x7)!=0
(
&ffsoffset=&ffsoffset+(0x8-(&ffsoffset&0x7))
)
) ; end fv ffs loop
enddo
ProcessFfsFile:
LOCAL &ffsfilestart &ffsfilesize &ffsfiletype &secoffset &secsize
ENTRY &ffsfilestart
;print "processing ffs file at &ffsfilestart"
&ffsfilesize=Data.Long(a:&ffsfilestart+0x14)
&ffsfiletype=(&ffsfilesize&0xff000000)>>24.
&ffsfilesize=&ffsfilesize&0x00ffffff
if &ffsfiletype==0
(
return
)
print "ffs file at &ffsfilestart size &ffsfilesize type &ffsfiletype"
&secoffset=&ffsfilestart+0x18
; loop through sections in file
while &secoffset<(&ffsfilestart+&ffsfilesize)
(
print "secoffset at &secoffset"
; process fv section and increment section offset by size
&secsize=(Data.Long(a:&secoffset)&0x00ffffff)
gosub ProcessFvSection &secoffset
&secoffset=(&secoffset+&secsize)
;print "secsize is &secsize"
;print "secoffset at &secoffset"
; align to next 4 byte boundary
if (&secoffset&0x3)!=0
(
&secoffset=&secoffset+(0x4-(&secoffset&0x3))
)
) ; end section loop
return
ProcessFvSection:
LOCAL &secstart &sectionsize &sectiontype &secoffset &secsize
ENTRY &secstart
&sectionsize=Data.Long(a:&secstart)
&sectiontype=((&sectionsize&0xff000000)>>24.)
&sectionsize=&sectionsize&0x00ffffff;
print "fv section at &secstart size &sectionsize type &sectiontype"
if &sectiontype==0x10 ; PE32
(
do EfiProcessPeImage (&secstart+0x4)
)
else
(
if &sectiontype==0x12 ; TE
(
do EfiProcessTeImage (&secstart+0x4)
)
else
(
print "unknown section type"
)
)
return