Are you able to share a core dump with us to be able to see where it's crashing? It looks like if you do `ulimit -c unlimited` in your shell before running flashrom, you should get a core dump in `/cores/core.PID` (where PID is the PID of the flashrom process) when it crashes. If you can share that file (or get a backtrace from it yourself using a debugger) we should at least be able to see what it's trying to do when it crashes.
On Sat, Aug 17, 2024 at 3:18 PM Flaviu Ciobanu <flaviu.ciob...@gmail.com> wrote: > Hi devs! > > I previously successfully used flashrom to read and patch a MX25L6406E > BIOS chip in a late 2013 15" MacBook Pro with a Ch341a programmer, but I am > now having issues trying to write to a 25Q064A BIOS chip in a mid 2014 15" > MacBook Pro. > > I installed flashrom with homebrew. > I connected the SOP8 clip to the chip, then the adapter, then the CH341A. > I read the chip into an image.bin file 3 times and compared MD5 sums to > make sure they were the same. > I then patched the file with UEFI Patch to unlock undervolting ( > https://github.com/IsmaelHG/UndervoltPatchMacBook). > > I then ran the write command in terminal. You can see the command and the > output pasted below ending in "Segmentation fault: 11". > > Should I try erasing the chip first? I'm scared I will brick it if it > still can't write afterward. What else can I try? > > Terminal output: > sudo flashrom -V -p ch341a_spi -c N25Q064..3E -w > /Users/Flyview/Downloads/UEFIPatch_0.28.0_mac/image.bin > flashrom 1.4.0 on Darwin 23.6.0 (x86_64) > flashrom is free software, get the source code at https://flashrom.org > > flashrom was built with LLVM Clang 15.0.0 (clang-1500.3.9.4), little endian > Command line (7 args): flashrom -V -p ch341a_spi -c N25Q064..3E -w > /Users/Flyview/Downloads/UEFIPatch_0.28.0_mac/image.bin > Initializing ch341a_spi programmer > libusb: info [darwin_detach_kernel_driver] no capture entitlements. may > not be able to detach the kernel driver for this device > Device revision is 3.0.4 > The following protocols are supported: SPI. > Probing for Micron/Numonyx/ST N25Q064..3E, 8192 kB: compare_id: id1 0x20, > id2 0xba17 > Added layout entry 00000000 - 007fffff named complete flash > Found Micron/Numonyx/ST flash chip "N25Q064..3E" (8192 kB, SPI) on > ch341a_spi. > Chip status register is 0x00. > Chip status register: Status Register Write Disable (SRWD, SRP, ...) is > not set > Chip status register: Block Protect 3 (BP3) is not set > Chip status register: Top/Bottom (TB) is top > Chip status register: Block Protect 2 (BP2) is not set > Chip status register: Block Protect 1 (BP1) is not set > Chip status register: Block Protect 0 (BP0) is not set > Chip status register: Write Enable Latch (WEL) is not set > Chip status register: Write In Progress (WIP/BUSY) is not set > 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). > This flash part has status UNTESTED for operations: 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@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. > You can also try to follow the instructions here: > https://www.flashrom.org/contrib_howtos/how_to_mark_chip_tested.html > Thanks for your help! > Reading old flash chip contents... read_flash: region (00000000..0x7fffff) > is readable, reading range (00000000..0x7fffff). > done. > Segmentation fault: 11 > Thank you! > > Faviu > _______________________________________________ > flashrom mailing list -- flashrom@flashrom.org > To unsubscribe send an email to flashrom-le...@flashrom.org >
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