Hello Michael,

I tried to use the MTD layer but that did not work even though I set the flash in the Linux device tree read-write. I cannot remember the output exactly as it is some time ago that I tried (with Debian).

Cheers, Bastian

Am 07.06.2018 um 09:49 schrieb Michael Walle:

Am 6. Juni 2018 11:38:56 MESZ schrieb Bastian Germann bastiangermann@fishpost.de:

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Signed-off-by: Bastian Germann bastian.germann@fishpost.de

board/buffalo/lsxl/README | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/board/buffalo/lsxl/README b/board/buffalo/lsxl/README index ef5ed42880..3ede081776 100644 --- a/board/buffalo/lsxl/README +++ b/board/buffalo/lsxl/README @@ -111,7 +111,7 @@ rescue See `Rescue Mode` for more information.

You can change the boot source by setting the 'bootsource' variable to the -corresponding value. Please note, that the restore_env script will the the +corresponding value. Please note, that the restore_env script will set the bootsource back to 'legacy'.

haha had to read twice to see the difference. nice catch.

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@@ -137,3 +137,18 @@ you already have a bootloader CLI, you can use the following commands: bootp ${loadaddr} u-boot.kwb sf erase 0 +${filelen} sf write 0 ${fileaddr} ${filesize}

+As netconsole is unavailable in the Buffalo U-Boot version, you can only +flash via bootloader CLI if you modify the board. If you do not want to do +that, you can flash from GNU/Linux with the flashrom utility. You have to +have the flash chip available as a spidev device, which you can get by +enabling Linux configuration option CONFIG_SPI_SPIDEV and adding a spidev +compatible device in the device tree available in the Linux source tree as +arch/arm/boot/dts/kirkwood-lsxl.dtsi

+The flashing is then done with the following commands:

• flashrom -r dump.bin -p linux_spi:dev=/dev/spidev0.0
• truncate -s 384K u-boot.kwb
• dd conv=notrunc if=u-boot.kwb of=dump.bin
• flashrom -w dump.bin -p linux_spi:dev=/dev/spidev0.0

i guess there is no need for flashrom and raw spi access if you're using the MTD layer (flash_erase /dev/mtd0 0 0 and dd to /dev/mtd0). any advantages of using flash_rom?

-michael