On Wednesday, March 30th, 2022 at 10:42 AM, Nico Huber wrote:
> What I do in this case is to start with the most simple layout:
>
> 0000:0fff fd
>
> and then flash only the descriptor to make `--ifd` work again. `ifdtool`
> may work too but has some quirks: sometimes you have to tell it what
> descriptor generation to expect and it doesn't warn if you don't, AIUI.

Hello Nico,

I have finally been able to try your suggestion, and I belive that my
original problem has been solved. However, I'm not yet able to flash the
chip. I don't know if this should be posted as a new question to the
mailing list, but as this problem could also just be a rookie mistake by
me, I will try to post it here first.

The chip I'm trying to flash is the Macronix MX25L12873F which support
was added for in commit 16661d82e3c17e224a21c109572b0834ec63a17c /
Change-Id I59c8067f15b5ceac5a2e2f8fe93431a465f17e23 on 14/07-21.

I'm using flashrom built from master branch (7dcd0de).

The SOIC clip is high quality with very good grip, and so far I have
never had any communication problems with the chip. I have made sure
that everything is wired correctly and also tried with different values
for spispeed, but the error is the same:

========================================================================
Command line (14 args): flashrom -p \
linux_spi:dev=/dev/spidev0.0,spispeed=1000 -c \
MX25L12833F/MX25L12835F/MX25L12845E/MX25L12865E/MX25L12873F -w \
firmware.bin -l rom.layout -i fd --noverify-all -V -o out.log
Added layout entry 00000000 - 00000fff named fd
Using region: "fd".
Initializing linux_spi programmer
Using device /dev/spidev0.0
Using 1000kHz clock
get_max_kernel_buf_size: Using value from \
/sys/module/spidev/parameters/bufsiz as max buffer size.
linux_spi_init: max_kernel_buf_size: 4096
The following protocols are supported: SPI.
Probing for Macronix \
MX25L12833F/MX25L12835F/MX25L12845E/MX25L12865E/MX25L12873F, 16384 kB: \
compare_id: id1 0xc2, id2 0x2018
Added layout entry 00000000 - 00ffffff named complete flash
Found Macronix flash chip \
"MX25L12833F/MX25L12835F/MX25L12845E/MX25L12865E/MX25L12873F" \
(16384 kB, SPI) on linux_spi.
Chip status register is 0x7c.
Chip status register: Status Register Write Disable (SRWD, SRP, ...) \
is not set
Chip status register: Bit 6 is set
Chip status register: Block Protect 3 (BP3) is set
Chip status register: Block Protect 2 (BP2) is set
Chip status register: Block Protect 1 (BP1) is set
Chip status register: Block Protect 0 (BP0) is 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).
Some block protection in effect, disabling... Block protection could \
not be disabled!
Chip status register is 0x7c.
Chip status register: Status Register Write Disable (SRWD, SRP, ...) \
is not set
Chip status register: Bit 6 is set
Chip status register: Block Protect 3 (BP3) is set
Chip status register: Block Protect 2 (BP2) is set
Chip status register: Block Protect 1 (BP1) is set
Chip status register: Block Protect 0 (BP0) is set
Chip status register: Write Enable Latch (WEL) is not set
Chip status register: Write In Progress (WIP/BUSY) is not set
Reading old flash chip contents... done.
Erasing and writing flash chip... Trying erase function 0... \
0x000000-0x000fff:EFAILED at 0x00000000! Expected=0xff, Found=0x00, \
failed byte count from 0x00000000-0x00000fff: 0x1000
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase \
function.
Trying erase function 1... 0x000000-0x007fff:RREFAILED at 0x00000000! \
Expected=0xff, Found=0x00, failed byte count from \
0x00000000-0x00007fff: 0x8000
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase \
function.
Trying erase function 2... 0x000000-0x00ffff:RREFAILED at 0x00000000! \
Expected=0xff, Found=0x00, failed byte count from \
0x00000000-0x0000ffff: 0x10000
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase \
function.
Trying erase function 3... 0x000000-0xffffff:RREFAILED at 0x00000000! \
Expected=0xff, Found=0x00, failed byte count from \
0x00000000-0x00ffffff: 0xae98a3
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase \
function.
Trying erase function 4... 0x000000-0xffffff:RREFAILED at 0x00000000! \
Expected=0xff, Found=0x00, failed byte count from \
0x00000000-0x00ffffff: 0xae98a3
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase \
function.
Trying erase function 5... not defined. Looking for another erase \
function.
Trying erase function 6... not defined. Looking for another erase \
function.
Trying erase function 7... not defined. No usable erase functions left.
FAILED!
Uh oh. Erase/write failed.
Your flash chip is in an unknown state.
Please report this to the mailing list at flashrom@flashrom.org or
on IRC (see https://www.flashrom.org/Contact for details), thanks!
========================================================================

What could I be doing wrong, that causes this new error?

Thanks.

Best regards,
Pete Smith
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