[flashrom] Re: Do you have support for W25Q128FW and W25Q256.W?

[David Hendricks]

Hi Amin,
Please note that the W25Q128FW is a 1.8V chip, while Raspberry PI IOs are
3.3V.

For Dediprog, pass in the `voltage` parameter, e.g. `flashrom -p
dediprog:voltage=1.8 -r foo.bin`

Also, as Mike mentioned it will help if we know the version of flashrom
which you are trying to use. Some distributions provide very old versions.

On Wed, Apr 22, 2020 at 1:33 AM Wu, Amin  wrote:
> [AMD Official Use Only - Internal Distribution Only]
>
> Hi David Hendricks,
>
> “No EEPROM/flash device found” pop after I added below code to
> flashchips.c and flashchips.h to install flashrom in Raspberry 4B.
>
> pi@raspberrypi:~ $ sudo flashrom -p
> linux_spi:dev=/dev/spidev0.0,spispeed=4096
>
> flashrom  on Linux 4.19.57-v7l+ (armv7l)
>
> flashrom is free software, get the source code at https://flashrom.org
>
> Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
>
> No EEPROM/flash device found.
>
> Note: flashrom can never write if the flash chip isn't found automatically.
>
> Do you have any suggestions? Thanks 😊
>
> flashchips.h
>
> #define WINBOND_NEX_W25Q128FW 0xef6018 /*W25Q128FW */
>
> flashchips.c
>      {
>
>               .vendor            = "Winbond",
>
>               .name               = "W25Q128FW",
>
>               .bustype  = BUS_SPI,
>
>               .manufacture_id     = WINBOND_NEX_ID,
>
>               .model_id        = WINBOND_NEX_W25Q128FW,
>
>               .total_size       = 16384,
>
>               .page_size       = 256,
>
>               /* supports SFDP */
>
>               /* OTP: 1024B total, 256B reserved; read 0x48; write
>
> 0x42, erase 0x44, read ID 0x4B */
>               .feature_bits   = FEATURE_WRSR_WREN | FEATURE_OTP |
>
> FEATURE_QPI,
>               .tested              = TEST_OK_PREW,
>
>               .probe              = probe_spi_rdid,
>
>               .probe_timing = TIMING_ZERO,
>
>               .block_erasers =
>
>               {
>
>                       {
>
>                                .eraseblocks = { {4 * 1024, 4096} },
>
>                                .block_erase = spi_block_erase_20,
>
>                       }, {
>
>                                .eraseblocks = { {32 * 1024, 512} },
>
>                                .block_erase = spi_block_erase_52,
>
>                       }, {
>
>                                .eraseblocks = { {64 * 1024, 256} },
>
>                                .block_erase = spi_block_erase_d8,
>
>                       }, {
>
>                                .eraseblocks = { {16 * 1024 * 1024, 1}
>
> },
>                                .block_erase = spi_block_erase_60,
>
>                       }, {
>
>                                .eraseblocks = { {16 * 1024 * 1024, 1}
>
> },
>                                .block_erase = spi_block_erase_c7,
>
>                       }
>
>               },
>
>               .printlock = spi_prettyprint_status_register_plain, /*
>
> TODO: improve */
>               .unlock             = spi_disable_blockprotect,
>
>               .write                = spi_chip_write_256,
>
>               .read                 = spi_chip_read,
>
>               .voltage   = {1650, 1950},
>
>      },
>
>
>
>
>
> BR
>
> AMIN
>
> *From:* Wu, Amin
> *Sent:* Wednesday, April 22, 2020 2:55 PM
> *To:* 'David Hendricks' ; '
> [e-mail]' 
> *Cc:* '[e-mail]' 
> *Subject:* RE: [flashrom] Do you have support for W25Q128FW and W25Q256.W?
>
> [AMD Official Use Only - Internal Distribution Only]
>
> Hi Winbond,
>
> Do you have a plan to support flash bios for W25Q128FW and W25Q256.W via
> flashrom in Raspberry?
>
> BR
>
> AMIN
>
> *From:* Wu, Amin
> *Sent:* Tuesday, April 21, 2020 1:32 PM
> *To:* David Hendricks 
> *Cc:* [e-mail]
> *Subject:* RE: [flashrom] Do you have support for W25Q128FW and W25Q256.W?
>
> [AMD Official Use Only - Internal Distribution Only]
>
> Hi David, Hendricks,
>
> Can you share the flashrom link to download which support W25Q128FW and
> W25Q256.W?
>
> Now I used DediProg to flash these bioschip. I can try with raspberry to
> flash when I get the flashrom from you. 😊
>
> It is great help for me if flashrom support W25Q128FW and W25Q256.W. I
> tried edit flashchip.c and flashchip.h, but flash fail and fail. ☹
>
> Thank you flashrom developer. Good job! Flashrom~Yes~
>
> BR
>
> AMIN
>
> *From:* David Hendricks 
> *Sent:* Tuesday, April 21, 2020 1:06 PM
> *To:* Wu, Amin 
> *Cc:* [e-mail]
> *Subject:* Re: [flashrom] Do you have support for W25Q128FW and W25Q256.W?
>
> [CAUTION: External Email]
>
> Yes and yes :-)
>
> On Mon, Apr 20, 2020 at 10:05 PM Wu, Amin  wrote:
>
> [AMD Official Use Only - Internal Distribution Only]
>
> Hi
>
> Do you have support for W25Q128FW and W25Q256.W? Thanks
>
> BR
>
> AMIN
>
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