User talk:Eocallaghan

You can find me floating in #coreboot as funfunctor

Sections deserving their own page

• IDEAPAGE: Mitigation ageist attack on encryption keys in memory after cold boot
• IDEAPAGE: List ROMCC dependant boards to possibly EOL
• IDEAPAGE: Refactor AGESA for the long term

AGESA family table

AMD AGESA map

Arch Name	Model Name	Model #	Family
K10 architecture (2011)	Llano	?	f12
Bobcat architecture (2011)	Ontario	?	f14
	Zacate	?	f14
	Desna	?	f14
	Hondo	?	f14
Piledriver architecture (2012)	Orochi	00h-0fh	f15
	Trinity	?	f15tn
	Richland	?	f15rl
Jaguar architecture (2013)	Kabini	?	f16kb
	Temash	?	??

AMD AGESA map

AMD Architecture	Model Name	Socket	Family / Model #	Documentation
K10 architecture (2011)	Llano	FM1	Family 12h	BKDG	Revision Guide	Athlon II Data Sheet Sempron Data Sheet A-Series Data Sheet
Bobcat architecture (2011)	Ontario Zacate Desna Honda	FT1 BGA	Family 14h Models 00h-0fh	BKDG	Revision Guide
Bulldozer architecture (2012)	Orochi	AM3+ (AM3r2)	Family 15h Models 00h-0fh	BKDG	Revision Guide	FX-Series Data Sheet Opteron Data Sheet
Piledriver architecture (2012)	Trinity Richland	AM3+ FM2 FS1r2 FP2 BGA	Family 15tn Models 10h-1fh	BKDG	Revision Guide	A-Series Data Sheet R-Series Data Sheet
Jaguar architecture (2013)	Kabini Temash	FT3 BGA / AM1 (FS1b)	Family 16kb Models 00h-0f	BKDG	Revision Guide	Athlon Data Sheet G-Series Data Sheet A-Series Data Sheet Opteron Data Sheet
Steamroller architecture (2014)	Kaveri - "Bald Eagle"	FM2+ (FM2b)	Family 15kv Models 30h-3fh	BKDG	Revision Guide	A-Series Data Sheet
Puma architecture (2014)	Mullins - "Steppe Eagle" Beema - "Crowned Eagle"	AM1 (FS1b) FT3b BGA	Family 16ml Models 30h-3fh	BKDG	Revision Guide
Excavator architecture (2015)	Carrizo
K12 ARM-64 architecture (2016)

AMD Developer Central: Developer Guides & Manuals
Search developer.amd.com and support.amd.com

Current Activities

• Clean up superio support.
• Fix DSDT/SSDT in AGESA

AGESA - DSDT/SSDT

Current list of issues below:

Error 6126: syntax error, ***

Notes:

We may extract and decompile the first SSDT table in the following way:

cat /sys/firmware/acpi/tables/SSDT1 > ssdt.dd ; iasl -d ssdt.dd

A snip of the broken code fragment in question is given:

If (LEqual (Local2, 0x07))
{
    If (CondRefOf (\_SB.ALIC, Local6))
    {
        Store (ShiftLeft (Add (Arg0, 0x02), 0x03), Local1)
        \_SB.ALIC (Local1, 0x00, Sleep (0x02), \_SB.ALIC (Local1, 0x01, Store (0x00, 
            Local3), Store (0x01, Local2), Continue, Store (0x04, Local2)), If (LEqual (Local2, 
            0x05))
            {
                Store (0x01, Local4)
                Store (0x00, Local2)
                A074 (Arg0, 0x02)
            }, If (LEqual (Local2, 0x00))
            {
                Store (0x01, A017) /* \_SB_.A017 */
                A029 ()
                Store (0x08, Local2)
            })
    }
}

Currently AGESA has pre-compiled a bunch of .esl files into:

src/vendorcode/amd/agesa/f14/Proc/GNB/PCIe/Family/0x14/F14PcieAlibSsdt.h

This array of pre-compiled SSDT bytecode is used to construct the SSDT table in:

src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbPcieAlibV1/PcieAlib.c

in the function:

AGESA_STATUS PcieAlibBuildAcpiTable ( IN AMD_CONFIG_PARAMS *StdHeader, OUT VOID  **AlibSsdtPtr ) { .. }

The root of SSDT seems to be in the file: vendorcode/amd/agesa/f14/Proc/GNB/PCIe/Family/0x14/F14PcieAlib.esl

We can work around the broken SSDT in mainboard support by maing the following changes to this line in acpi_tables.c:

- alib = (acpi_header_t *)agesawrapper_getlateinitptr (PICK_ALIB);
+ // alib = (acpi_header_t *)agesawrapper_getlateinitptr (PICK_ALIB);
+ alib = NULL;

A full diagnostic report is given:

Test 2 of 2: Disassemble and reassemble SSDT
 
Checking ACPI table SSDT (#0)
 
FAILED [HIGH] AMLAsmASL_MSG_SYNTAX: Test 2, Assembler error in line 1151
Line | AML source
--------------------------------------------------------------------------------
01148| If (CondRefOf (\_SB.ALIC, Local6))
01149| {
01150| Store (ShiftLeft (Add (Arg0, 0x02), 0x03), Local1)
01151| \_SB.ALIC (Local1, 0x00, Sleep (0x02), \_SB.ALIC (Local1, 0x01, Store (0x00,
| ^
| Error 6126: syntax error, unexpected PARSEOP_SLEEP, expecting ',' or ')'
01152| Local3), Store (0x01, Local2), Continue, Store (0x04, Local2)), If (LEqual (Local2,
01153| 0x05))
01154| {
================================================================================
:
ADVICE: (for Error #6126, ASL_MSG_SYNTAX): The disassembled code cannot be
reassembled using the strict IASL compiler as it contains syntax errors.
 
FAILED [HIGH] AMLAsmASL_MSG_SYNTAX: Test 2, Assembler error in line 1152
Line | AML source
--------------------------------------------------------------------------------
01149| {
01150| Store (ShiftLeft (Add (Arg0, 0x02), 0x03), Local1)
01151| \_SB.ALIC (Local1, 0x00, Sleep (0x02), \_SB.ALIC (Local1, 0x01, Store (0x00,
01152| Local3), Store (0x01, Local2), Continue, Store (0x04, Local2)), If (LEqual (Local2,
| ^
| Error 6126: syntax error, unexpected PARSEOP_CONTINUE, expecting ',' or ')'
01153| 0x05))
01154| {
01155| Store (0x01, Local4)
================================================================================
 
ADVICE: (for Error #6126, ASL_MSG_SYNTAX): The disassembled code cannot be
reassembled using the strict IASL compiler as it contains syntax errors.
 
FAILED [HIGH] AMLAsmASL_MSG_SYNTAX: Test 2, Assembler error in line 1152
Line | AML source
--------------------------------------------------------------------------------
01149| {
01150| Store (ShiftLeft (Add (Arg0, 0x02), 0x03), Local1)
01151| \_SB.ALIC (Local1, 0x00, Sleep (0x02), \_SB.ALIC (Local1, 0x01, Store (0x00,
01152| Local3), Store (0x01, Local2), Continue, Store (0x04, Local2)), If (LEqual (Local2,
| ^
| Error 6126: syntax error, unexpected ')'
01153| 0x05))
01154| {
01155| Store (0x01, Local4)
================================================================================
 
ADVICE: (for Error #6126, ASL_MSG_SYNTAX): The disassembled code cannot be
reassembled using the strict IASL compiler as it contains syntax errors.
 
FAILED [HIGH] AMLAsmASL_MSG_SYNTAX: Test 2, Assembler error in line 1158
Line | AML source
--------------------------------------------------------------------------------
01155| Store (0x01, Local4)
01156| Store (0x00, Local2)
01157| A074 (Arg0, 0x02)
01158| }, If (LEqual (Local2, 0x00))
| ^
| Error 6126: syntax error, unexpected ','
01159| {
01160| Store (0x01, A017) /* \_SB_.A017 */
01161| A029 ()
================================================================================
 
ADVICE: (for Error #6126, ASL_MSG_SYNTAX): The disassembled code cannot be
reassembled using the strict IASL compiler as it contains syntax errors.
 
FAILED [HIGH] AMLAsmASL_MSG_SYNTAX: Test 2, Assembler error in line 1163
Line | AML source
--------------------------------------------------------------------------------
01160| Store (0x01, A017) /* \_SB_.A017 */
01161| A029 ()
01162| Store (0x08, Local2)
01163| })
| ^
| Error 6126: syntax error, unexpected ')'
01164| }
01165| }
01166| }
================================================================================
 
ADVICE: (for Error #6126, ASL_MSG_SYNTAX): The disassembled code cannot be
reassembled using the strict IASL compiler as it contains syntax errors.
 
FAILED [HIGH] SyntaxCheckIASLCompilerAborted: Test 2, Compilation aborted early
due to a parser detected syntax error.
 
ADVICE: Some subsequent errors may not be detected because the compiler had to
terminate prematurely. If the compiler did not abort early then potentially
correct code may parse incorrectly producing some or many false positive errors.
 
Table SSDT (0) reassembly: Found 5 errors, 0 warnings, 0 remarks.

Remark 2089: Object is not referenced

./src/southbridge/amd/cimx/sb800/acpi/fch.asl:	CreateDWordField(Arg3,0,CDW1)
./src/southbridge/amd/cimx/sb800/acpi/fch.asl:	CreateDWordField(Arg3,4,CDW2)
./src/southbridge/amd/cimx/sb800/acpi/fch.asl:	CreateDWordField(Arg3,8,CDW3)

Checking ACPI table DSDT (#0)

FAILED [LOW] AMLAsmASL_MSG_NOT_REFERENCED: Test 1, Assembler remark in line 1793
Line | AML source
--------------------------------------------------------------------------------
01790|             Method (_OSC, 4, NotSerialized)  // _OSC: Operating System Capabilities
01791|             {
01792|                 CreateDWordField (Arg3, Zero, CDW1)
01793|                 CreateDWordField (Arg3, 0x04, CDW2)
     |                                                 ^
     | Remark 2089: Object is not referenced    (Name is within method [_OSC])
01794|                 CreateDWordField (Arg3, 0x08, CDW3)
01795|                 If (LEqual (Arg0, Buffer (0x10)
01796|                         {
================================================================================
FAILED [LOW] AMLAsmASL_MSG_NOT_REFERENCED: Test 1, Assembler remark in line 1794
Line | AML source
--------------------------------------------------------------------------------
01791|             {
01792|                 CreateDWordField (Arg3, Zero, CDW1)
01793|                 CreateDWordField (Arg3, 0x04, CDW2)
01794|                 CreateDWordField (Arg3, 0x08, CDW3)
     |                                                 ^
     | Remark 2089: Object is not referenced    (Name is within method [_OSC])
01795|                 If (LEqual (Arg0, Buffer (0x10)
01796|                         {
01797|                             /* 0000 */   0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40,
================================================================================
Table DSDT (0) reassembly: Found 0 errors, 0 warnings, 2 remarks.

Resource allocator

Key:

= bus
- device

Structure:

 =========              next                =========
 || bus ||--------------------------------->|| bus ||
 =========                                  =========
    | | +-----------------+
    | |                   |
    | +-+                 v children
bus |   | dev             |
    ^   v             +---+----+
    |   |        +--- | Device |
 +--------+  bus |    +--------+
 | Bridge |<-----+        |
 +--------+      |        v children
             bus |    +---+----+
                 +--- | Device |
                      +--------+