November 2025 - flashrom - mail.coreboot.org

ROM offset and Layout
by Xavier Jiang Dec. 13, 2025

Dec. 13, 2025

The board is AsRock B85M-ITX. The chip "died", whatever. I am trying to flash it. When I tried to flash the images, I get "Error: Image size (8392704 B) doesn't match the expected size (8388608 B)!" I went and found the use of uefiextract to "extract" images. What I found is that the Full size: 801000h (8392704)Header size: 1000h (4096)Image size: 300000h (3145728)Flags: 00010001h Which, if you do the math, 8392704 is exactly 4096 more than the 8388608. How would I flash this?

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Unable to dump Macronix MX35LF1GE4AB
by pc_magas Dec. 13, 2025

Dec. 13, 2025

Hello I am trying to add Macronix `MX35LF1GE4AB` support upon flashrom. I am using a raspberrypi Zero W and its SPi driver to dump it. So far upon `flashchips/macronix.c` I placed: ``` { .vendor = "Macronix", .name = "MX35LF1GE4AB", .bustype = BUS_SPI, .manufacture_id = MACRONIX_ID, .model_id = MACRONIX_MX35LF1GE4AB, .total_size = 1024, .page_size = 256, .tested = {.probe = NT, .read = NT, .erase = NA, .write = NA, .wp = NA}, .probe = PROBE_SPI_RDID, .probe_timing = TIMING_ZERO, .write = 0, /* MX35LF1GE4AB is a flash chip but I could test only the reading */ .read = SPI_CHIP_READ, /* Fast read (0x0B) supported */ .voltage = {3000, 3600}, }, ``` Whilst on `include/flashchips.h` I set: ``` #define MACRONIX_MX35LF1GE4AB 0xC212 ``` And I compile it as: ``` meson setup builddir --wipe meson compile -C builddir meson test -C builddir meson install -C builddir ``` But `meson test -C builddir` throws error: ``` meson test -C builddir ninja: Entering directory `/home/pcmagas/flashrom/builddir' ninja: no work to do. 1/2 cmocka test flashrom FAIL 7.01s (exit status 255 or signal 127 SIGinvalid) >>> ASAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1 MALLOC_PERTURB_=86 MSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 UBSAN_OPTIONS=halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1 MESON_TEST_ITERATION=1 /home/pcmagas/flashrom/builddir/tests/flashrom_unit_tests 2/2 flashrom client tests OK 0.67s Ok: 1 Expected Fail: 0 Fail: 1 Unexpected Pass: 0 Skipped: 0 Timeout: 0 Full log written to /home/pcmagas/flashrom/builddir/meson-logs/testlog.txt ``` How I can see what's wrong with the test? Also if I ingore the error of the test and proceed with the installation it is installed normaly. But once I try to dump the flash I get: ``` sudo flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=512 flashrom v1.7.0-devel (git:v1.6.0-49-gf5bcb6d1) on Linux 6.12.47+rpt-rpi-v6 (armv6l) flashrom is free software, get the source code at https://flashrom.org No EEPROM/flash device found. Note: flashrom can never write if the flash chip isn't found automatically. ``` The chip datasheet is upon: https://www.mxic.com.tw/Lists/Datasheet/Attachments/9075/MX35LF1GE4AB,%203V… Can you guide me what I am doing wrong?

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SST25WF040B on ch341a_spi
by Bajji sw Nov. 22, 2025

Nov. 22, 2025

The read seems to work Also see attached log flashrom --programmer ch341a_spi -r backup.bin -o flashrom.log flashrom unknown on Linux 6.14.0-27-generic (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 SST flash chip "SST25WF040B" (512 kB, SPI) on ch341a_spi. === This flash part has status UNTESTED for operations: PROBE READ ERASE WRITE WP The test status of this chip may have been updated in the latest development version of flashrom. If you are running the latest development version, please email a report to flashrom(a)flashrom.org if any of the above operations work correctly for you with this flash chip. Please include the flashrom log file for all operations you tested (see the man page for details), and mention which mainboard or programmer you tested in the subject line. Thanks for your help! Reading flash... done. Cheers

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FAILED: ELITEGROUP COMPUTER SYSTEM CO.,LTD. 945G-M3
by mett Nov. 21, 2025

Nov. 21, 2025

Hi Team, Flashrom failed with below info: ---- root@ecs:# flashrom --programmer internal -c "W39V040FB" -w /home/mett/bios/M331125.BIN --force flashrom v1.2 on Linux 5.4.44-1-lts (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 ICH7/ICH7R". Enabling flash write... OK. Found Winbond flash chip "W39V040FB" (512 kB, FWH) mapped at physical address 0x00000000fff80000. Reading old flash chip contents... done. Erasing and writing flash chip... FAILED at 0x00060000! Expected=0xff, Found=0x4f, failed byte count from 0x00060000-0x0006ffff: 0x10000 ERASE FAILED! Reading current flash chip contents... done. Looking for another erase function. FAILED at 0x00000000! Expected=0xff, Found=0x1f, failed byte count from 0x00000000-0x0007ffff: 0x80000 ERASE FAILED! Reading current flash chip contents... done. Looking for another erase function. Looking for another erase function. Looking for another erase function. 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 ---- I tried to flash the backup I had but get same error. I tried the --verify option and it says "failed" as well. Please, kindly tell me if you think there is something we can do to recover from this state, when you have a chance. Cheers!

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FAILED: T440p
by L G Nov. 6, 2025

Nov. 6, 2025

Hello, I followed the github skulls tutorial to update in the terminal my corebooted T440p and it failed, and it says DO NOT REBOOT. What should I do ? It was this tutorial : https://github.com/merge/skulls/blob/master/t440p/README.md#updating Here is the copy of my terminal : sudo ./skulls.sh -b t440p 1) ./t440p_coreboot_seabios_4931b978d9_top.rom 2) Quit file not specified. Please select a file to flash. Please read the README for details about the differences: 1 t440p_coreboot_seabios_4931b978d9_top.rom: OK Flash the BIOS now? y/N: y flashrom v1.2 on Linux 6.16.3-76061603-generic (x86_64) flashrom is free software, get the source code at https://flashrom.org Using region: "bios". Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns). Cannot open file stream for /dev/mtd0 Found chipset "Intel QM87". 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(a)flashrom.org including a verbose (-V) log. Thank you! Enabling flash write... Warning: BIOS region SMM protection is enabled! Warning: Setting Bios Control at 0xdc from 0x2a to 0x09 failed. New value is 0x2b. SPI Configuration is locked down. FREG0: Flash Descriptor region (0x00000000-0x00000fff) is read-only. FREG2: Management Engine region (0x00003000-0x004fffff) is locked. Not all flash regions are freely accessible by flashrom. This is most likely due to an active ME. Please see https://flashrom.org/ME for details. PR1: Warning: 0x00b40000-0x00bfffff is read-only. PR2: Warning: 0x00ab1000-0x00adffff is read-only. PR3: Warning: 0x00ab0000-0x00ab0fff is read-only. PR4: Warning: 0x00800000-0x00aaffff is read-only. At least some flash regions are read protected. You have to use a flash layout and include only accessible regions. For write operations, you'll additionally need the --noverify-all switch. See manpage for more details. Enabling hardware sequencing due to multiple flash chips detected. OK. Found Programmer flash chip "Opaque flash chip" (12288 kB, Programmer-specific) mapped at physical address 0x0000000000000000. Reading old flash chip contents... done. Erasing and writing flash chip... Transaction error between offset 0x00800000 and 0x00800fff (= 0x00800000 + 4095)! Reading current flash chip contents... done. Looking for another erase function. Looking for another erase function. Looking for another erase function. Looking for another erase function. 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. 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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