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

WANG FEI wangfei.jimei at gmail.com
Mon Jun 20 23:50:23 CEST 2016


Looking at the logs you've got, the final bios only have BIOS/coreboot and
descriptor.bin, the GbE/ME areas are not used, I think as long as your
enable the descripor.bin, it should be good enough.

  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)*

On Mon, Jun 20, 2016 at 3:16 AM, 김유석 <poplinux0 at gmail.com> wrote:

> 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
>
>
>
> --
> coreboot mailing list: coreboot at coreboot.org
> https://www.coreboot.org/mailman/listinfo/coreboot
>
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