[PATCH] Nokia RX-51: Update documentation about flashing

[Lokesh Vutla]

Hi,

On 18/06/21 6:59 pm, Pali Rohár wrote:
> This change contains update for doc/README.nokia_rx51 documentation file
> with information how to load U-Boot image to device RAM without need to
> flash it and also how to flash it into OneNAND via 0xFFFF flasher.
> 
> Signed-off-by: Pali Rohár <pali at kernel.org>

Can you please convert this file to rST ?

Thanks and regards,
Lokesh

> ---
>  doc/README.nokia_rx51 | 45 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 45 insertions(+)
> 
> diff --git a/doc/README.nokia_rx51 b/doc/README.nokia_rx51
> index 1be077514f03..e739b02088ea 100644
> --- a/doc/README.nokia_rx51
> +++ b/doc/README.nokia_rx51
> @@ -22,6 +22,51 @@ following repository:
>  
>    https://github.com/pali/u-boot-maemo
>  
> +To generate combined.bin image from u-boot.bin and kernel.bin (either uImage
> +or zImage) use:
> +
> +  sh u-boot-gen-combined u-boot.bin kernel.bin combined.bin
> +
> +Original Maemo Fremantle PR1.3 zImage kernel binary is available at:
> +
> +  http://repository.maemo.org/pool/maemo5.0/free/k/kernel/kernel_2.6.28-20103103+0m5_armel.deb
> +
> +To unpack it (from DEB/AR, TAR and FIASCO) call commands:
> +
> +  ar x kernel_2.6.28-20103103+0m5_armel.deb data.tar.gz
> +  tar -O -xf data.tar.gz ./boot/zImage-2.6.28-20103103+0m5.fiasco > kernel_2.6.28-20103103+0m5.fiasco
> +  0xFFFF -M kernel_2.6.28-20103103+0m5.fiasco -u
> +
> +Flashed image must start with 2 kB "NOLO!img" header which contains size of
> +the image. Header consist of bytes "NOLO!img\x02\x00\x00\x00\x00\x00\x00\x00"
> +followed by 4 byte little endian size of the image and rest of the 2 kB header
> +are just zero bytes.
> +
> +Nokia proprietary flasher and also open source 0xFFFF flasher automatically
> +prepend required "NOLO!img" header and both applications expect that image
> +does not contain "NOLO!img" header. Adding "NOLO!img" header is required
> +only in case using "nandwrite" tool for flashing.
> +
> +Open source 0xFFFF flasher is available in following repository:
> +
> +  https://github.com/pali/0xFFFF
> +
> +It is possible to load u-boot.bin via USB to N900 RAM and boot it without
> +need to flashing it. Via 0xFFFF running at host PC it is done:
> +
> +  0xFFFF -m u-boot.bin -l -b
> +
> +0xFFFF support also flashing kernel image either via USB or directly on
> +N900 device. Flashing u-boot/kernel/combined image is done as:
> +
> +  0xFFFF -m combined.bin -f
> +
> +Via 0xFFFF is possible to generate also standard flashable image in Nokia
> +FIASCO format which contains metadata information like device identification
> +(RX-51) and version string (v2021.04):
> +
> +  0xFFFF -m RX-51:v2021.04:kernel:u-boot.bin -g u-boot.fiasco
> +
>  There is support for hardware watchdog. Hardware watchdog is started by
>  NOLO so u-boot must kick watchdog to prevent reboot device (but not very
>  often, max every 2 seconds). There is also support for framebuffer display
>