I am trying to use flashrom to make a bios backup file on my lenovo thinkpad x131e chromebook (intel celeron 1007u cpu).
I have set developer-mode and have physically opened the laptop and set the write protect switch to the write enable position.
I am using the command "sudo flashrom -p internal -r backup.bin -o backup.log"
But when I check the md5sum for backup.bin it is different from each previous backup.bin. Shouldn't the md5sum of the backup stay the same, as long as the bios has not been changed?
Here is the output from backup.log:
flashrom v0.9.7-r1711 on Linux 3.8.11 (x86_64) flashrom was built with libpci 3.1.8, GCC 4.6.3, little endian Command line (7 args): flashrom -p internal -r bku1.bin -o bku1.log -V Calibrating delay loop... OS timer resolution is 1 usecs, 1493M loops per second, 10 myus = 10 us, 100 myus = 99 us, 1000 myus = 1002 us, 10000 myus = 10007 us, 4 myus = 4 us, OK. Initializing internal programmer Found candidate at: 00000500-00000510 Found coreboot table at 0x00000500. Found candidate at: 00000000-000003d8 Found coreboot table at 0x00000000. coreboot table found at 0xacedd000. coreboot header(24) checksum: 7b8d table(984) checksum: eeda entries: 18 Vendor ID: GOOGLE, part ID: Stout DMI string system-manufacturer: "GOOGLE" DMI string system-product-name: "Stout" DMI string system-version: "1.0" DMI string baseboard-manufacturer: "" DMI string baseboard-product-name: "" DMI string baseboard-version: "" DMI string chassis-type: "Desktop" W836xx enter config mode worked or we were already in config mode. W836xx leave config mode had no effect. Active config mode, unknown reg 0x20 ID: 85. Please send the output of "flashrom -V" to flashrom@flashrom.org with W836xx: your board name: flashrom -V as the subject to help us finish support for your Super I/O. Thanks. Found ITE EC, ID 0x8518, Rev 0x08 on port 0x2e. Found chipset "Intel HM77" with PCI ID 8086:1e57. This chipset is marked as untested. If you are using an up-to-date version of flashrom *and* were (not) able to successfully update your firmware with it, then please email a report to flashrom@flashrom.org including a verbose (-V) log. Thank you! Enabling flash write... 0xfff80000/0xffb80000 FWH IDSEL: 0x0 0xfff00000/0xffb00000 FWH IDSEL: 0x0 0xffe80000/0xffa80000 FWH IDSEL: 0x1 0xffe00000/0xffa00000 FWH IDSEL: 0x1 0xffd80000/0xff980000 FWH IDSEL: 0x2 0xffd00000/0xff900000 FWH IDSEL: 0x2 0xffc80000/0xff880000 FWH IDSEL: 0x3 0xffc00000/0xff800000 FWH IDSEL: 0x3 0xff700000/0xff300000 FWH IDSEL: 0x4 0xff600000/0xff200000 FWH IDSEL: 0x5 0xff500000/0xff100000 FWH IDSEL: 0x6 0xff400000/0xff000000 FWH IDSEL: 0x7 0xfff80000/0xffb80000 FWH decode enabled 0xfff00000/0xffb00000 FWH decode enabled 0xffe80000/0xffa80000 FWH decode enabled 0xffe00000/0xffa00000 FWH decode enabled 0xffd80000/0xff980000 FWH decode enabled 0xffd00000/0xff900000 FWH decode enabled 0xffc80000/0xff880000 FWH decode enabled 0xffc00000/0xff800000 FWH decode enabled 0xff700000/0xff300000 FWH decode enabled 0xff600000/0xff200000 FWH decode enabled 0xff500000/0xff100000 FWH decode enabled 0xff400000/0xff000000 FWH decode enabled Maximum FWH chip size: 0x100000 bytes BIOS_CNTL = 0x09: BIOS Lock Enable: disabled, BIOS Write Enable: enabled Root Complex Register Block address = 0xfed1c000 GCS = 0xc21: BIOS Interface Lock-Down: enabled, Boot BIOS Straps: 0x3 (SPI) Top Swap : not enabled SPIBAR = 0xfed1c000 + 0x3800 0x04: 0xc000 (HSFS) HSFS: FDONE=0, FCERR=0, AEL=0, BERASE=0, SCIP=0, FDOPSS=0, FDV=1, FLOCKDN=1 Warning: SPI Configuration Lockdown activated. The Flash Descriptor Override Strap-Pin is set. Restrictions implied by the Master Section of the flash descriptor are NOT in effect. Please note that Protected Range (PR) restrictions still apply. Reading OPCODES... done OP Type Pre-OP op[0]: 0x01, write w/o addr, none op[1]: 0x02, write w/ addr, none op[2]: 0x03, read w/ addr, none op[3]: 0x05, read w/o addr, none op[4]: 0x20, write w/ addr, none op[5]: 0x9f, read w/o addr, none op[6]: 0xd8, write w/ addr, none op[7]: 0x0b, read w/ addr, none Pre-OP 0: 0x06, Pre-OP 1: 0x50 0x06: 0x0000 (HSFC) HSFC: FGO=0, FCYCLE=0, FDBC=0, SME=0 0x08: 0x00000000 (FADDR) 0x50: 0x0000ffff (FRAP) BMWAG 0x00, BMRAG 0x00, BRWA 0xff, BRRA 0xff 0x54: 0x00000000 FREG0: Flash Descriptor region (0x00000000-0x00000fff) is read-write. 0x58: 0x07ff0200 FREG1: BIOS region (0x00200000-0x007fffff) is read-write. 0x5C: 0x01ff0001 FREG2: Management Engine region (0x00001000-0x001fffff) is read-write. 0x60: 0x00001fff FREG3: Gigabit Ethernet region is unused. 0x64: 0x00001fff FREG4: Platform Data region is unused. 0x74: 0x00000000 (PR0 is unused) 0x78: 0x00000000 (PR1 is unused) 0x7C: 0x00000000 (PR2 is unused) 0x80: 0x00000000 (PR3 is unused) 0x84: 0x00000000 (PR4 is unused) 0x90: 0xc0 (SSFS) SSFS: SCIP=0, FDONE=0, FCERR=0, AEL=0 0x91: 0xf94400 (SSFC) SSFC: SCGO=0, ACS=0, SPOP=0, COP=0, DBC=4, SME=0, SCF=1 0x94: 0x5006 (PREOP) 0x96: 0xb32d (OPTYPE) 0x98: 0x05030201 (OPMENU) 0x9C: 0x0bd89f20 (OPMENU+4) 0xA0: 0x00000000 (BBAR) 0xC4: 0x00000000 (LVSCC) LVSCC: BES=0x0, WG=0, WSR=0, WEWS=0, EO=0x0, VCL=0 0xC8: 0x00000000 (UVSCC) UVSCC: BES=0x0, WG=0, WSR=0, WEWS=0, EO=0x0, VCL=0 0xD0: 0x00000000 (FPB)
Reading flash descriptors mapped by the chipset via FDOC/FDOD... done. === Content Section === FLVALSIG 0x0ff0a55a FLMAP0 0x02040003 FLMAP1 0x12100206 FLMAP2 0x00210120
--- Details --- NR (Number of Regions): 3 FRBA (Flash Region Base Address): 0x040 NC (Number of Components): 1 FCBA (Flash Component Base Address): 0x030 ISL (ICH/PCH Strap Length): 18 FISBA/FPSBA (Flash ICH/PCH Strap Base Address): 0x100 NM (Number of Masters): 3 FMBA (Flash Master Base Address): 0x060 MSL/PSL (MCH/PROC Strap Length): 1 FMSBA (Flash MCH/PROC Strap Base Address): 0x200
=== Component Section === FLCOMP 0x49300024 FLILL 0x00000000
--- Details --- Component 1 density: 8 MB Component 2 is not used. Read Clock Frequency: 20 MHz Read ID and Status Clock Freq.: 33 MHz Write and Erase Clock Freq.: 33 MHz Fast Read is supported. Fast Read Clock Frequency: 33 MHz No forbidden opcodes.
=== Region Section === FLREG0 0x00000000 FLREG1 0x07ff0200 FLREG2 0x01ff0001 FLREG3 0x00001fff FLREG4 0x00001fff
--- Details --- Region 0 (Descr.) 0x00000000 - 0x00000fff Region 1 (BIOS ) 0x00200000 - 0x007fffff Region 2 (ME ) 0x00001000 - 0x001fffff Region 3 (GbE ) is unused. Region 4 (Platf.) is unused.
=== Master Section === FLMSTR1 0x0a0b0000 FLMSTR2 0x0c0d0000 FLMSTR3 0x08080118
--- Details --- Descr. BIOS ME GbE Platf. BIOS r rw rw ME r rw rw GbE rw
SPI Read Configuration: prefetching enabled, caching enabled, OK. Super I/O ID 0x8518 is not on the list of flash capable controllers. No board enable found matching coreboot IDs vendor="GOOGLE", model="Stout". The following protocols are supported: FWH, SPI. Probing for AMIC A25L05PT, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L05PU, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L10PT, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L10PU, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L20PT, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L20PU, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L40PT, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L40PU, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L80P, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L16PT, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L16PU, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L512, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L010, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L020, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L040, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L080, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L016, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25L032, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25LQ16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25LQ032/A25LQ32A, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for AMIC A25LQ64, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25DF021, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25DF041A, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25DF081, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25DF081A, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25DF161, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25DF321, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25DF321A, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25DF641(A), 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25DQ161, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25F512, 64 kB: Invalid OPCODE 0x15, will not execute. Probing for Atmel AT25F512A, 64 kB: Invalid OPCODE 0x15, will not execute. Probing for Atmel AT25F512B, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25F1024(A), 128 kB: Invalid OPCODE 0x15, will not execute. Probing for Atmel AT25F2048, 256 kB: Invalid OPCODE 0x15, will not execute. Probing for Atmel AT25F4096, 512 kB: Invalid OPCODE 0x15, will not execute. Probing for Atmel AT25FS010, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT25FS040, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT26DF041, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT26DF081A, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT26DF161, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT26DF161A, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT26F004, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT45CS1282, 16896 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT45DB011D, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT45DB021D, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT45DB041D, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT45DB081D, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT45DB161D, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT45DB321C, 4224 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT45DB321D, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel AT45DB642D, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for ESMT F25L008A, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B05, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B05T, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B10, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B10T, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B20, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B20T, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B40, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B40T, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B80T, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B16T, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B32, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B32T, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B64, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25B64T, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25F05, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25F10, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25F20, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25F40, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25F80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25F16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25F32, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25F64, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25Q40, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25Q80(A), 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25Q16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25Q32(A/B), 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25Q64, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25Q128, 16384 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25QH16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25QH32, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25QH64, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25QH128, 16384 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25S10, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25S20, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25S40, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25S80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25S16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25S32, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon EN25S64, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25LQ32, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25Q512, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25Q10, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25Q20(B), 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25Q40(B), 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25Q80(B), 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25Q16(B), 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25Q32(B), 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25Q64(B), 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25Q128B, 16384 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for GigaDevice GD25T80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Intel 25F160S33B8, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Intel 25F160S33T8, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Intel 25F320S33B8, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Intel 25F320S33T8, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Intel 25F640S33B8, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Intel 25F640S33T8, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L512(E)/MX25V512(C), 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L1005(C)/MX25L1006E, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L2005(C), 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L4005(A/C), 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L8005/MX25V8005, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L1605, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L1605A/MX25L1606E, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L1605D/MX25L1608D, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L1635D, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L1635E, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L3205(A), 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L3205D/MX25L3208D, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L3206E, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L3235D, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L6405(D), 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L6406E/MX25L6436E, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L6445E, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25L12805(D), 16384 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25U1635E, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25U3235E/F, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix MX25U6435E/F, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25P05-A, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25P05, 64 kB: Ignoring RES in favour of RDID. Probing for Micron/Numonyx/ST M25P10-A, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25P10, 128 kB: Ignoring RES in favour of RDID. Probing for Micron/Numonyx/ST M25P20, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25P20-old, 256 kB: Ignoring RES in favour of RDID. Probing for Micron/Numonyx/ST M25P40, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25P40-old, 512 kB: Ignoring RES in favour of RDID. Probing for Micron/Numonyx/ST M25P80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25P16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25P32, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25P64, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25P128, 16384 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25PE10, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25PE20, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25PE40, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25PE80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25PE16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25PX80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25PX16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25PX32, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M25PX64, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M45PE10, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M45PE20, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M45PE40, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M45PE80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST M45PE16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST N25Q016, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST N25Q032..1E, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST N25Q032..3E, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST N25Q064..1E, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST N25Q064..3E, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST N25Q128..1E, 16384 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Micron/Numonyx/ST N25Q128..3E, 16384 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Nantronics N25S10, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Nantronics N25S20, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Nantronics N25S40, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Nantronics N25S80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Nantronics N25S16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LD256C, 32 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LD512(C), 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LD010(C), 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LD020(C), 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LD040(C), 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LV512(A), 64 kB: Invalid OPCODE 0xab, will not execute. Probing for PMC Pm25LV010, 128 kB: Invalid OPCODE 0xab, will not execute. Probing for PMC Pm25LV010A, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LV020, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LV040, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LV080B, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC Pm25LV016B, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Sanyo LE25FW203A, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Sanyo LE25FW403A, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Sanyo LE25FW418A, 512 kB: Invalid OPCODE 0xab, will not execute. Probing for Sanyo LE25FW806, 1024 kB: Invalid OPCODE 0xab, will not execute. Probing for Sanyo LE25FW808, 1024 kB: Invalid OPCODE 0xab, will not execute. Probing for Spansion S25FL004A, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Spansion S25FL008A, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Spansion S25FL016A, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Spansion S25FL032A/P, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Spansion S25FL064A/P, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Spansion S25FL204K, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Spansion S25FL208K, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Spansion S25FL116K/S25FL216K, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Spansion S25FL128S......0, 16384 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST SST25LF040A, 512 kB: Invalid OPCODE 0xab, will not execute. Probing for SST SST25LF080(A), 1024 kB: Invalid OPCODE 0xab, will not execute. Probing for SST SST25VF010, 128 kB: Invalid OPCODE 0x90, will not execute. Probing for SST SST25VF016B, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST SST25VF032B, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST SST25VF064C, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST SST25VF040, 512 kB: Invalid OPCODE 0x90, will not execute. Probing for SST SST25VF040B, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST SST25VF040B.REMS, 512 kB: Invalid OPCODE 0x90, will not execute. Probing for SST SST25VF080B, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST SST25WF512, 64 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST SST25WF010, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST SST25WF020, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST SST25WF040, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q80.V, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q16.V, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q32.V, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q64.V, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Found Winbond flash chip "W25Q64.V" (8192 kB, SPI) at physical address 0xff800000. Chip status register is 0x80. Probing for Winbond W25Q128.V, 16384 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q20.W, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q40.W, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q80.W, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q16.W, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q32.W, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25Q64.W, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25X10, 128 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25X20, 256 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25X40, 512 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25X80, 1024 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25X16, 2048 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25X32, 4096 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond W25X64, 8192 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Unknown SFDP-capable chip, 0 kB: Invalid OPCODE 0x5a, will not execute. Receiving SFDP signature failed. Probing for AMIC unknown AMIC SPI chip, 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Atmel unknown Atmel SPI chip, 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Eon unknown Eon SPI chip, 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Macronix unknown Macronix SPI chip, 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for PMC unknown PMC SPI chip, 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for SST unknown SST SPI chip, 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for ST unknown ST SPI chip, 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Sanyo unknown Sanyo SPI chip, 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Winbond unknown Winbond (ex Nexcom) SPI chip, 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Generic unknown SPI chip (RDID), 0 kB: probe_spi_rdid_generic: id1 0xef, id2 0x4017 Probing for Generic unknown SPI chip (REMS), 0 kB: Invalid OPCODE 0x90, will not execute. Probing for Atmel AT49LH002, 256 kB: probe_82802ab: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for Intel 82802AB, 512 kB: probe_82802ab: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for Intel 82802AC, 1024 kB: probe_82802ab: id1 0x4c, id2 0x41, id1 is normal flash content, id2 is normal flash content Probing for PMC Pm49FL002, 256 kB: probe_jedec_common: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for PMC Pm49FL004, 512 kB: probe_jedec_common: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for Sharp LHF00L04, 1024 kB: probe_82802ab: id1 0x4c, id2 0x41, id1 is normal flash content, id2 is normal flash content Probing for SST SST49LF002A/B, 256 kB: probe_jedec_common: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for SST SST49LF003A/B, 384 kB: probe_jedec_common: id1 0x50, id2 0xb0, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for SST SST49LF004A/B, 512 kB: probe_jedec_common: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for SST SST49LF004C, 512 kB: probe_82802ab: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for SST SST49LF008A, 1024 kB: probe_jedec_common: id1 0x4c, id2 0x41, id1 is normal flash content, id2 is normal flash content Probing for SST SST49LF008C, 1024 kB: probe_82802ab: id1 0x4c, id2 0x41, id1 is normal flash content, id2 is normal flash content Probing for SST SST49LF016C, 2048 kB: Chip size 2048 kB is bigger than supported size 1024 kB of chipset/board/programmer for FWH interface, probe/read/erase/write may fail. probe_82802ab: id1 0x5f, id2 0x53, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for ST M50FLW040A, 512 kB: probe_82802ab: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for ST M50FLW040B, 512 kB: probe_82802ab: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for ST M50FLW080A, 1024 kB: probe_82802ab: id1 0x4c, id2 0x41, id1 is normal flash content, id2 is normal flash content Probing for ST M50FLW080B, 1024 kB: probe_82802ab: id1 0x4c, id2 0x41, id1 is normal flash content, id2 is normal flash content Probing for ST M50FW002, 256 kB: probe_82802ab: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for ST M50FW016, 2048 kB: Chip size 2048 kB is bigger than supported size 1024 kB of chipset/board/programmer for FWH interface, probe/read/erase/write may fail. probe_82802ab: id1 0x5f, id2 0x53, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for ST M50FW040, 512 kB: probe_82802ab: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for ST M50FW080, 1024 kB: probe_82802ab: id1 0x4c, id2 0x41, id1 is normal flash content, id2 is normal flash content Probing for Winbond W39V040FA, 512 kB: probe_jedec_common: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for Winbond W39V040FB, 512 kB: probe_jedec_common: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for Winbond W39V040FC, 512 kB: probe_jedec_common: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for Winbond W49V002FA, 256 kB: probe_jedec_common: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Probing for Winbond W39V080FA, 1024 kB: probe_jedec_common: id1 0x4c, id2 0x41, id1 is normal flash content, id2 is normal flash content Probing for Winbond W39V080FA (dual mode), 512 kB: probe_jedec_common: id1 0xff, id2 0xff, id1 parity violation, id1 is normal flash content, id2 is normal flash content Found Winbond flash chip "W25Q64.V" (8192 kB, SPI). This chip may contain one-time programmable memory. flashrom cannot read and may never be able to write it, hence it may not be able to completely clone the contents of this chip (see man page for details). Block protection is disabled. Reading flash... done. Restoring MMIO space at 0x7ff643ff18a0
Any help/advise/suggestions would be appreciated. My aim was to use flashrom (if possible) to flash some bios other than the chromebook bios.
Thanks
Sheri
On Mon, 24 Feb 2014 20:23:25 -0800 (PST) Sheri Soltz sherimsoltz@yahoo.com wrote:
But when I check the md5sum for backup.bin it is different from each previous backup.bin. Shouldn't the md5sum of the backup stay the same, as long as the bios has not been changed?
The firmware of x86 machines is stored on flash chips. BIOS might (wrongly) refer to either of the firmware or the flash chip. Your Chromebook uses coreboot as a firmware which is stored in the Winbond flash chip (W25Q64). The flash chip is not too much different to a usb key... so it can be modified by software (else flashrom would not make much sense). Modern firmware uses this fact to store e.g. log files to the flash chip, and this can produce the mismatches you are seeing. So this might just be normal (I am not sure in this specific case though).
Google has forked flashrom for their chromebook development and I would suggest that you take a look at it when working on the x131e. It can be found here https://chromium.googlesource.com/chromiumos/third_party/flashrom/
Would you be so kind as to take a look at the flashrom log file (backup1.log) that I have attached and let me know if there is something in it that I should hesitate before trying to write a new bios to the flash chip? The output was produced using the command sudo flashrom -p internal -r backup1.bin -o backup1.log
Would you need the actual backup1.bin file also?
Thanks,
Sheri
________________________________ From: Stefan Tauner stefan.tauner@student.tuwien.ac.at To: Sheri Soltz sherimsoltz@yahoo.com Cc: flashrom@flashrom.org Sent: Tuesday, February 25, 2014 2:46 PM Subject: Re: [flashrom] laptop bios
On Mon, 24 Feb 2014 20:23:25 -0800 (PST) Sheri Soltz sherimsoltz@yahoo.com wrote:
But when I check the md5sum for backup.bin it is different from each previous backup.bin. Shouldn't the md5sum of the backup stay the same, as long as the bios has not been changed?
The firmware of x86 machines is stored on flash chips. BIOS might (wrongly) refer to either of the firmware or the flash chip. Your Chromebook uses coreboot as a firmware which is stored in the
Winbond flash chip (W25Q64). The flash chip is not too much different to a usb key... so it can be modified by software (else flashrom would not make much sense). Modern firmware uses this fact to store e.g. log files to the flash chip, and this can produce the mismatches you are seeing. So this might just be normal (I am not sure in this specific case though).
Google has forked flashrom for their chromebook development and I would suggest that you take a look at it when working on the x131e. It can be found here https://chromium.googlesource.com/chromiumos/third_party/flashrom/
On Wed, 26 Feb 2014 02:52:40 -0800 (PST) Sheri Soltz sherimsoltz@yahoo.com wrote:
Would you be so kind as to take a look at the flashrom log file (backup1.log) that I have attached and let me know if there is something in it that I should hesitate before trying to write a new bios to the flash chip?
Actually, no. Because vanilla flashrom might not be aware of all aspects of the hardware that could be a problem. I guess there is documentation regarding manipulating the flash of all chromebooks somewhere that contains better hints than I could give.
-
Sheri Soltz -
Stefan Tauner