diff options
| author | Duncan Laurie <dlaurie@google.com> | 2017-11-11 19:33:25 -0800 |
|---|---|---|
| committer | Duncan Laurie <dlaurie@chromium.org> | 2017-11-15 16:07:14 +0000 |
| commit | e4a36c7b52d6528c3a8035f6ccdf6b4da1f56f58 (patch) | |
| tree | 76ab597669ddd78e8000ec2d5129031a2021e8cb /src/soc/intel/apollolake | |
| parent | 8f20044c77cdb52a0e769feeb5d1b58333dfce82 (diff) | |
arch/x86/acpi: Add support for writing ACPI DBG2 table
Add a function to create an ACPI DBG2 table, which is a Microsoft
ACPI extension for providing a description of the available debug
interface on a board.
A convenience function is provided for creating a DBG2 table with
a 16550 UART based on a PCI device.
This is tested by generating a device and verifying it with iasl:
[000h 0000 4] Signature : "DBG2"
[004h 0004 4] Table Length : 00000061
[008h 0008 1] Revision : 00
[009h 0009 1] Checksum : 3B
[00Ah 0010 6] Oem ID : "CORE "
[010h 0016 8] Oem Table ID : "COREBOOT"
[018h 0024 4] Oem Revision : 00000000
[01Ch 0028 4] Asl Compiler ID : "CORE"
[020h 0032 4] Asl Compiler Revision : 00000000
[024h 0036 4] Info Offset : 0000002C
[028h 0040 4] Info Count : 00000001
[02Ch 0044 1] Revision : 00
[02Dh 0045 2] Length : 0035
[02Fh 0047 1] Register Count : 01
[030h 0048 2] Namepath Length : 000F
[032h 0050 2] Namepath Offset : 0026
[034h 0052 2] OEM Data Length : 0000
[036h 0054 2] OEM Data Offset : 0000
[038h 0056 2] Port Type : 8000
[03Ah 0058 2] Port Subtype : 0000
[03Ch 0060 2] Reserved : 0000
[03Eh 0062 2] Base Address Offset : 0016
[040h 0064 2] Address Size Offset : 0022
[042h 0066 12] Base Address Register : [Generic Address Structure]
[042h 0066 1] Space ID : 00 [SystemMemory]
[043h 0067 1] Bit Width : 00
[044h 0068 1] Bit Offset : 00
[045h 0069 1] Encoded Access Width : 03 [DWord Access:32]
[046h 0070 8] Address : 00000000FE034000
[04Eh 0078 4] Address Size : 00001000
[052h 0082 15] Namepath : "\_SB.PCI0.UAR2"
Raw Table Data: Length 97 (0x61)
0000: 44 42 47 32 61 00 00 00 00 3B 43 4F 52 45 20 20 // DBG2a....;CORE
0010: 43 4F 52 45 42 4F 4F 54 00 00 00 00 43 4F 52 45 // COREBOOT....CORE
0020: 00 00 00 00 2C 00 00 00 01 00 00 00 00 35 00 01 // ....,........5..
0030: 0F 00 26 00 00 00 00 00 00 80 00 00 00 00 16 00 // ..&.............
0040: 22 00 00 00 00 03 00 40 03 FE 00 00 00 00 00 10 // "......@........
0050: 00 00 5C 5F 53 42 2E 50 43 49 30 2E 55 41 52 32 // ..\_SB.PCI0.UAR2
0060: 00 // .
Change-Id: I55aa3f24776b2f8aa38d7da117f422d8b8ec5479
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/22452
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/soc/intel/apollolake')
0 files changed, 0 insertions, 0 deletions