flashrom February 2021

flashrom@flashrom.org

21 participants
26 discussions

Re: VIA VL805 SPI Flash Bus support
by John Paul Morrison 04 Feb '21

04 Feb '21

I built flashrom from commit 7b8b945a004ba69529fe0283ad18a40ee34255bd I was able to read firmware from my pci card. I don't have an original firmware (version 013600) to compare it to but it looks legit: cmp -l vl805_fw_013600.bin vl805_fw_013701.bin | head 130 40 41 131 256 245 133 42 43 134 340 147 151 214 374 172 74 303 178 166 346 180 43 44 181 202 11 241 42 41 flashrom dumps the whole 512KB of FM25Q04 using generic SPI. Comparing other official firmware my guess is the layout(?) for this firmware should be: 0:17AD7 FW013600 i'M keeping track of firmware on https://github.com/jpmorrison/VL805/tree/main/firmware flashrom unknown on Linux 4.15.0-130-generic (x86_64) flashrom was built with libpci 3.5.2, GCC 7.5.0, little endian Command line (7 args): ./flashrom -VV --programmer vl805 -r test.img -o test.log Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns). Initializing vl805 programmer Found "VIA VL805" (1106:3483, BDF 01:00.0). ... SFDP has autodetected a flash chip which is not natively supported by flashrom yet. All standard operations (read, verify, erase and write) should work, but to support all possible features we need to add them manually. You can help us by mailing us the output of the following command to flashrom(a)flashrom.org: 'flashrom -VV [plus the -p/--programmer parameter]' Thanks for your help! === Found Unknown flash chip "SFDP-capable chip" (512 kB, SPI) on vl805. Probing for AMIC unknown AMIC SPI chip, 0 kB: compare_id: id1 0xa1, id2 0x4013 Probing for Atmel unknown Atmel SPI chip, 0 kB: RDID byte 0 parity violation. compare_id: id1 0x00, id2 0x00 Probing for Eon unknown Eon SPI chip, 0 kB: RDID byte 0 parity violation. compare_id: id1 0x00, id2 0x00 Probing for Macronix unknown Macronix SPI chip, 0 kB: RDID byte 0 parity violation. compare_id: id1 0x00, id2 0x00 Probing for PMC unknown PMC SPI chip, 0 kB: RDID byte 0 parity violation. compare_id: id1 0x00, id2 0x00 Probing for SST unknown SST SPI chip, 0 kB: RDID byte 0 parity violation. compare_id: id1 0x00, id2 0x00 Probing for ST unknown ST SPI chip, 0 kB: RDID byte 0 parity violation. compare_id: id1 0x00, id2 0x00 Probing for Sanyo unknown Sanyo SPI chip, 0 kB: RDID byte 0 parity violation. compare_id: id1 0x00, id2 0x00 Probing for Winbond unknown Winbond (ex Nexcom) SPI chip, 0 kB: RDID byte 0 parity violation. compare_id: id1 0x00, id2 0x00 Probing for Generic Variable Size SPI chip, 64 kB: Probing for Generic unknown SPI chip (RDID), 0 kB: RDID byte 0 parity violation. compare_id: id1 0x00, id2 0x00 Probing for Generic unknown SPI chip (REMS), 0 kB: compare_id: id1 0xa1, id2 0x12 Found Unknown flash chip "SFDP-capable chip" (512 kB, SPI). Block protection is disabled. Reading flash... done.

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HDD in-circuit reprogramming
by Thomasheidler 03 Feb '21

03 Feb '21

Hi I need to reprogram the firmware on a WD HDD with SOIC8 Winbond chip supported by flashrom. I tried reading in-circuit but my programmer does not detect it (other chips work fine). Probably other components are drawing voltage so I disconnected Vcc and tried to power it through regular SATA connectors which didn't work. Do you have any recommendations how to workaround this issue? Will supplying power through 3.3V Vcc and SATA connector at same time fry the chip? Thanks for your help Tom

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bios flash
by Justin Eazy Cheeze 03 Feb '21

03 Feb '21

Hi I tried bios flashing and it ran perfectly till it verified at the end of writing the flash C:\Users\Justin Hardy\Desktop\Flashrom_v1.2_St1cky>flashrom -w FLASH.ROM -p busp irate_spi:dev=COM5,spispeed=1M flashrom v1.2 on Windows 6.1 (x86_64) flashrom is free software, get the source code at https://flashrom.org Calibrating delay loop... OK. Found Winbond flash chip "W25Q32.V" (4096 kB, SPI) on buspirate_spi. Reading old flash chip contents... done. Erasing and writing flash chip... Erase/write done. Verifying flash... FAILED at 0x00000060! Expected=0x00, Found=0x01, failed byte count from 0x00000000-0x003fffff: 0xc0af Your flash chip is in an unknown state. Please report this on IRC at chat.freenode.net (channel #flashrom) or mail flashrom(a)flashrom.org, thanks! C:\Users\Justin Hardy\Desktop\Flashrom_v1.2_St1cky> At first I got a fail reading because I disconnected it somehow, then it worked and got this at the very end thanks!

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Information function read
by Lukas Augustin 03 Feb '21

03 Feb '21

Hi, I would like to ask about read parametr. I have PC HP All-in-one and after change SSD disk PC blackout, not even logo shown up, so i found instructions how to write newer bios(because led double flash and that me bios corrupted) using Arduino UNO to ROM_RECOVER bus.Firstly I try backup old ROM used command: sudo flashrom -p serprog:dev=/dev/ttyACM0:115200 -r old.ROM and after that I saw serial line sending data but after 10 minutes LED TX turn off and at Terminal is still Reading flash.... after 30minute waiting nothing happend. Will you advise me? Thank you, in attachment is picture of terminal

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adding support for PCIe SPI flash?
by John Paul Morrison 02 Feb '21

02 Feb '21

Hi I'm just starting to look at fashrom to see how to read/update SPI flash on a PCIe card lspci -d 1106:3483 01:00.0 USB controller: VIA Technologies, Inc. VL805 USB 3.0 Host Controller (rev 01) There isn't much from Via but the chipset is used in the Raspberry Pi 4 and the Pi firmware provides a flash tool vl805 (no source code of course!) I can run it on Intel with Qemu - unfortunately for me the tool is hard coded for a different SPI flash chip (and in later Pi hardware seems to have been moved/removed) Inspecting the board and related datasheets (VL800) the chipset has an SPI interface for firmware, and it can be used for PCI BIOS apparently. The actual SPI chip varies from board to board - mine is FM25Q04 from the data sheet ID=A112. Raspberry Pi seems to use W25X10BV based on the ID EF10 Are there any simple examples of accessing SPI on PCIe cards? sorry for the long post - I've included a bit more info on what I could find on the chip thanks John Paul Other info on the chip: I can read the firmware version easily: sudo lspci -d 1106:3483 -xxx | awk '/^50:/ { print "VL805 FW version: " $5 $4 $3 $2 }' I can use strace to see what vl805 doing - I can make out some SPI commands - here it reads the SPI flash chip ID: openat(AT_FDCWD, "/sys/bus/pci/devices/0000:01:00.0/config", O_RDWR) = 4 (bunch of reads/writes) pread64(4, "\22\241\22\241", 4, 124) = 4 write(1, "R Rx_REG0 a112a112\n", 19) = 19 sudo ~/vl805/vl805 -d VL805 FW version: 00013600 W CHIP_SEL 00000001 R PCI_WB_EN ffffffff W PCI_WB_EN ffffff01 R STOP_POLLING 00000001 W STOP_POLLING 00000001 W CTRL_REG 000005a0 W CLK_DIV 0000000a W CHIP_SEL 00000000 W Tx_REG0 90000000 W CTRL_REG 000005c0 R Rx_REG0 a112a112 W CHIP_SEL 00000001 * flash ID mismatch - found a112, expected 0000ef10 I was able to find a Windows based firmware updater which supports about 20 different SPI chips - people have reported adding new chipsets, looks like I have to add mine as well. The flash tool runs under wine but it can't read anything - will have to find a fix or run in a vm. Via SpiFlash.ini: [MX25L512] FlashID=C22010 ReadID=9F WriteEnable=06 WriteStatus=01 ChipErase=60 ReadData=03 ReadStatus=05 PageProgram=02 ClockRate=32 PageSize=100 Raspberry Pi 4 ? [W25X10BV] FlashID=EF10 ReadID=90000000 WriteEnable=06 WriteStatus=01 ChipErase=C7 ReadData=03 ReadStatus=05 PageProgram=02 ClockRate=32 PageSize=10

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FAILED: GA-J1900N-D3V (rev. 1.x)
by christian＠diehl.nu 02 Feb '21

02 Feb '21

Hi there, I might have bricked my GA-J1900N-D3V (rev. 1.x) mainboad using flashrom. The BIOS/UEFI was in fallback mode using an old version of the BIOS (F1). This happened before using flashrom and is unrelated (but might be helpful to you). I am not sure what triggered the fallback - I blame it on a possible stuck power on switch triggering a manual failover. I did a successful read before the attempted write. The file is saved. Below is the full terminal output of the process. Hope you can help me. Thanks, Christian ------------------------------------------------------------- flashrom -p internal -w J190ND3V.F7 flashrom v1.2 on Linux 5.4.80-gentoo-r1-x86_64 (x86_64) flashrom is free software, get the source code at <https://flashrom.org> Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns). Found chipset "Intel Bay Trail". Enabling flash write... Warning: BIOS region SMM protection is enabled! Warning: Setting Bios Control at 0x0 from 0x22 to 0x01 failed. New value is 0x22. OK. Found Macronix flash chip "MX25U6435E/F" (8192 kB, SPI) mapped at physical address 0xff800000. Reading old flash chip contents... done. Erasing and writing flash chip... Transaction error! spi_write_cmd failed during command execution at address 0x0 Reading current flash chip contents... done. Looking for another erase function. Transaction error! spi_write_cmd failed during command execution at address 0x0 Reading current flash chip contents... done. Looking for another erase function. Transaction error! spi_write_cmd failed during command execution at address 0x0 Reading current flash chip contents... done. Looking for another erase function. Transaction error! spi_write_cmd failed during command execution at address 0x0 Reading current flash chip contents... done. Looking for another erase function. Transaction error! spi_write_cmd failed during command execution at address 0x0 Reading current flash chip contents... done. Looking for another erase function. Looking for another erase function. Looking for another erase function. No usable erase functions left. FAILED! Uh oh. Erase/write failed. Checking if anything has changed. Reading current flash chip contents... done. Apparently at least some data has changed. Your flash chip is in an unknown state. Get help on IRC at chat.freenode.net (channel #flashrom) or mail <flashrom(a)flashrom.org> with the subject "FAILED: <your board name>"! ------------------------------------------------------------------------------- DO NOT REBOOT OR POWEROFF!

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flashrom February 2021