diff options
Diffstat (limited to 'EmbeddedPkg/Scripts')
| -rw-r--r-- | EmbeddedPkg/Scripts/LauterbachT32/EfiLoadDxe.cmm | 77 | ||||
| -rw-r--r-- | EmbeddedPkg/Scripts/LauterbachT32/EfiProcessPeImage.cmm | 7 | ||||
| -rw-r--r-- | EmbeddedPkg/Scripts/LauterbachT32/Readme.md | 8 |
3 files changed, 19 insertions, 73 deletions
diff --git a/EmbeddedPkg/Scripts/LauterbachT32/EfiLoadDxe.cmm b/EmbeddedPkg/Scripts/LauterbachT32/EfiLoadDxe.cmm index 1605a9b478..06d307e12d 100644 --- a/EmbeddedPkg/Scripts/LauterbachT32/EfiLoadDxe.cmm +++ b/EmbeddedPkg/Scripts/LauterbachT32/EfiLoadDxe.cmm @@ -1,79 +1,22 @@ ;
+; Copyright (c) 2024, Ampere Computing LLC. All rights reserved.<BR>
; Copyright (c) 2011, Hewlett-Packard Company. All rights reserved.<BR>
;
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
- LOCAL &maxmem &systbl &memsize
-
- &memsize=0x20000000 ; default to 512MB
-
- gosub FindSystemTable &memsize
- ENTRY &systbl
-
- if &systbl!=0
- (
- print "found system table at &systbl"
- gosub FindDebugInfo &systbl
- )
- else
- (
- print "ERROR: system table not found, check memory size"
- )
- enddo
-
-FindSystemTable:
- LOCAL &TopOfRam &offset
- ENTRY &TopOfRam
-
- print "FindSystemTable"
- print "top of mem is &TopOfRam$"
-
- &offset=&TopOfRam
-
- ; align to highest 4MB boundary
- &offset=&offset&0xFFC00000
-
- ; start at top and look on 4MB boundaries for system table ptr structure
- while &offset>0
- (
- ; low signature match
- if Data.Long(a:&offset)==0x20494249
- (
- ; high signature match
- if Data.Long(a:&offset+4)==0x54535953
- (
- ; less than 4GB?
- if Data.Long(a:&offset+0x0c)==0
- (
- ; less than top of ram?
- if Data.Long(a:&offset+8)<&TopOfRam
- (
- return Data.Long(a:&offset+8)
- )
- )
- )
- )
-
- if &offset<0x400000
- (
- return 0
- )
- &offset=&offset-0x400000
- )
-
- return 0
+ PARAMETERS &systbl
+ gosub FindDebugInfo &systbl
+ enddo
FindDebugInfo:
LOCAL &SystemTable &CfgTableEntries &ConfigTable &i &offset &dbghdr &dbgentries &dbgptr &dbginfo &loadedimg
ENTRY &SystemTable
- print "FindDebugInfo"
-
&dbgentries=0
- &CfgTableEntries=Data.Long(a:&SystemTable+0x40)
- &ConfigTable=Data.Long(a:&SystemTable+0x44)
+ &CfgTableEntries=Data.Long(a:&SystemTable+0x68)
+ &ConfigTable=Data.Long(a:&SystemTable+0x70)
print "config table is at &ConfigTable (&CfgTableEntries entries)"
@@ -82,7 +25,7 @@ FindDebugInfo: &i=0
while &i<&CfgTableEntries
(
- &offset=&ConfigTable+(&i*0x14)
+ &offset=&ConfigTable+(&i*0x18)
if Data.Long(a:&offset)==0x49152E77
(
if Data.Long(a:&offset+4)==0x47641ADA
@@ -120,8 +63,10 @@ FindDebugInfo: (
if Data.Long(a:&dbginfo)==1 ; normal debug info type
(
- &loadedimg=Data.Long(a:&dbginfo+4)
- do EfiProcessPeImage Data.Long(a:&loadedimg+0x20)
+ &loadedimg=Data.Long(a:&dbginfo+8)
+ &imagebaseptr=&loadedimg+0x40
+ &imagebase=Data.Long(a:&imagebaseptr)
+ do ~~~~/EfiProcessPeImage.cmm "&imagebase"
)
)
&i=&i+1
diff --git a/EmbeddedPkg/Scripts/LauterbachT32/EfiProcessPeImage.cmm b/EmbeddedPkg/Scripts/LauterbachT32/EfiProcessPeImage.cmm index c3aab9d06a..b0d97eec71 100644 --- a/EmbeddedPkg/Scripts/LauterbachT32/EfiProcessPeImage.cmm +++ b/EmbeddedPkg/Scripts/LauterbachT32/EfiProcessPeImage.cmm @@ -1,4 +1,5 @@ ;
+; Copyright (c) 2024, Ampere Computing LLC. All rights reserved.<BR>
; Copyright (c) 2011, Hewlett-Packard Company. All rights reserved.<BR>
;
; SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -10,11 +11,11 @@ &imgstart=&imgstart
print "PE32 image found at &imgstart"
- ; offset from dos hdr to PE file hdr
+ ; offset from dos hdr to PE file hdr (i.e. 'PE\0\0' signature)
&filehdrstart=&imgstart+Data.Long(c:&imgstart+0x3C)
; offset to debug dir in PE hdrs
- &debugdirentryrva=Data.Long(c:&filehdrstart+0xA8)
+ &debugdirentryrva=Data.Long(c:&imgstart+0xf10)
if &debugdirentryrva==0
(
print "no debug dir for image at &imgstart"
@@ -62,7 +63,7 @@ &elfbase=&baseofdata;
)
- print "found path &elfpath"
+ print "found path &elfpath with address &elfbase"
ON ERROR GOSUB
return
data.load.elf &elfpath &elfbase /NOCODE /NOCLEAR
diff --git a/EmbeddedPkg/Scripts/LauterbachT32/Readme.md b/EmbeddedPkg/Scripts/LauterbachT32/Readme.md index 51d2c8da54..c30ec20a3d 100644 --- a/EmbeddedPkg/Scripts/LauterbachT32/Readme.md +++ b/EmbeddedPkg/Scripts/LauterbachT32/Readme.md @@ -1,10 +1,10 @@ # DXE Phase Debug
-Update the memsize variable in EfiLoadDxe.cmm for the actual amount of memory
-available in your system. Allow your system to boot to the point that the DXE
+Allow your system to boot to the point that the DXE
core is initialized (so that the System Table and Debug Information table is
present in memory) and execute this script (using the toolbar button or
-'do EfiLoadDxe' from the command area). It will scan memory for the debug info
-table and load modules in it.
+'do EfiLoadDxe "0xGST_ADDRESS"' from the command area). 'GST_ADDRESS' is the
+address of the EFI_SYSTEM_TABLE, and can be found by the global `gST`.
+The script will scan memory for the debug info table and load modules in it.
# SEC/PEI Phase Debug
There is no way to autodetect where these images reside so you must pass an
|