[coreboot] How can extract descriptor.bin from bios image?

[김유석]

Dear Sir.

Thank's your advise. It is very useful to me.

My work log is see below.

   poplinux at raw rangeley $ > ./tools/ifdtool -x ./oem_dumped.bin
   File ./oem_dumped.bin is 8388608 bytes
     Flash Region 0 (Flash Descriptor): 00000000 - 0000ffff
     Flash Region 1 (BIOS): 00010000 - 007fffff
     Flash Region 2 (Intel ME): 00fff000 - 00000fff*(unused)*
     Flash Region 3 (GbE): 00fff000 - 00000fff *(unused)*
     Flash Region 4 (Platform Data): 00fff000 - 00000fff*(unused)*

*The Flash Region 2~3 is (unused). Is it corrent?*


And descriptor.bin's content is see below.

poplinux at raw rangeley $ > ./tools/ifdtool -d ./descriptor.bin
File ./descriptor.bin is 65536 bytes
FD signature Offset 0x10
FD signature Offset 0x10
FLMAP0:    0x01040003
   NR:      1
   FRBA:    0x40
   NC:      1
   FCBA:    0x30
FLMAP1:    0x09100206
   ISL:     0x09
   FPSBA:   0x100
   NM:      2
   FMBA:    0x60
FLMAP2:    0x00210020
   PSL:     0x2100
   FMSBA:   0x200
FLUMAP1:   0x000002e0
   Intel ME VSCC Table Length (VTL):        2
   Intel ME VSCC Table Base Address (VTBA): 0x000e00

ME VSCC table:
   JID0:  0x001740ef
     SPI Componend Device ID 1:          0x17
     SPI Componend Device ID 0:          0x40
     SPI Componend Vendor ID:            0xef
   VSCC0: 0x20052005
     Lower Erase Opcode:                 0x20
     Lower Write Enable on Write Status: 0x50
     Lower Write Status Required:        No
     Lower Write Granularity:            64 bytes
     Lower Block / Sector Erase Size:    4KB
     Upper Erase Opcode:                 0x20
     Upper Write Enable on Write Status: 0x50
     Upper Write Status Required:        No
     Upper Write Granularity:            64 bytes
     Upper Block / Sector Erase Size:    4KB

OEM Section:
00: 31 31 35 32 31 35 30 39 32 30 00 00 00 00 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Found Region Section
FLREG0:    0x000f0000
   Flash Region 0 (Flash Descriptor): 00000000 - 0000ffff
FLREG1:    0x07ff0010
   Flash Region 1 (BIOS): 00010000 - 007fffff
FLREG2:    0x00000fff
   Flash Region 2 (Intel ME): 00fff000 - 00000fff (unused)
FLREG3:    0x00000fff
   Flash Region 3 (GbE): 00fff000 - 00000fff (unused)
FLREG4:    0x00000fff
   Flash Region 4 (Platform Data): 00fff000 - 00000fff (unused)

Found Component Section
FLCOMP     0x09200024
   Dual Output Fast Read Support:       not supported
   Read ID/Read Status Clock Frequency: 33MHz
   Write/Erase Clock Frequency:         33MHz
   Fast Read Clock Frequency:           33MHz
   Fast Read Support:                   not supported
   Read Clock Frequency:                20MHz
   Component 2 Density:                 8MB
   Component 1 Density:                 8MB
FLILL      0x00000000
   Invalid Instruction 3: 0x00
   Invalid Instruction 2: 0x00
   Invalid Instruction 1: 0x00
   Invalid Instruction 0: 0x00
FLPB       0x00000000
   Flash Partition Boundary Address: 0x000000

Found PCH Strap Section
PCHSTRP0:  0x00080002
PCHSTRP1:  0x00000000
PCHSTRP2:  0x00000000
PCHSTRP3:  0x00000003
PCHSTRP4:  0x0000007f
PCHSTRP5:  0x007fffc0
PCHSTRP6:  0x0001c7c0
PCHSTRP7:  0x00000624
PCHSTRP8:  0x00000000
PCHSTRP9:  0xffffffff
PCHSTRP10: 0xffffffff
PCHSTRP11: 0xffffffff
PCHSTRP12: 0xffffffff
PCHSTRP13: 0xffffffff
PCHSTRP14: 0xffffffff
PCHSTRP15: 0xffffffff
PCHSTRP16: 0xffffffff
PCHSTRP17: 0xffffffff

Found Master Section
FLMSTR1:   0x1f1f0000 (Host CPU/BIOS)
   Platform Data Region Write Access: enabled
   GbE Region Write Access:           enabled
   Intel ME Region Write Access:      enabled
   Host CPU/BIOS Region Write Access: enabled
   Flash Descriptor Write Access:     enabled
   Platform Data Region Read Access:  enabled
   GbE Region Read Access:            enabled
   Intel ME Region Read Access:       enabled
   Host CPU/BIOS Region Read Access:  enabled
   Flash Descriptor Read Access:      enabled
   Requester ID:                      0x0000

FLMSTR2:   0x08090118 (Intel ME)
   Platform Data Region Write Access: disabled
   GbE Region Write Access:           enabled
   Intel ME Region Write Access:      disabled
   Host CPU/BIOS Region Write Access: disabled
   Flash Descriptor Write Access:     disabled
   Platform Data Region Read Access:  disabled
   GbE Region Read Access:            enabled
   Intel ME Region Read Access:       disabled
   Host CPU/BIOS Region Read Access:  disabled
   Flash Descriptor Read Access:      enabled
   Requester ID:                      0x0118

FLMSTR3:   0xffffffff (GbE)
   Platform Data Region Write Access: enabled
   GbE Region Write Access:           enabled
   Intel ME Region Write Access:      enabled
   Host CPU/BIOS Region Write Access: enabled
   Flash Descriptor Write Access:     enabled
   Platform Data Region Read Access:  enabled
   GbE Region Read Access:            enabled
   Intel ME Region Read Access:       enabled
   Host CPU/BIOS Region Read Access:  enabled
   Flash Descriptor Read Access:      enabled
   Requester ID:                      0xffff

Found Processor Strap Section
????:      0xffffffff
????:      0xffffffff
????:      0xffffffff
????:      0xffffffff


*Is this descrptor.bin  enought to support GbE interface?*

Thank you.



2016-06-18 오전 7:07에 Alexander Couzens 이(가) 쓴 글:
> Hi,
> use
>   ifdtool -x <file>
>
> best,
> lynxis


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