diff options
author | Pali Rohár <pali@kernel.org> | 2022-01-24 20:45:53 +0100 |
---|---|---|
committer | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2022-01-29 10:23:40 +0100 |
commit | 41c3ef4858aac82bf994e0de335e680d80ad51ee (patch) | |
tree | daebad461e32a0fef1e35a17cc3b147115093cc7 | |
parent | 8f89e194d64b3f297058b84286c31064cc7c142a (diff) | |
download | u-boot-41c3ef4858aac82bf994e0de335e680d80ad51ee.zip u-boot-41c3ef4858aac82bf994e0de335e680d80ad51ee.tar.gz u-boot-41c3ef4858aac82bf994e0de335e680d80ad51ee.tar.bz2 |
Nokia RX-51: Update documentation about flashing
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@kernel.org>
-rw-r--r-- | doc/README.nokia_rx51 | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/doc/README.nokia_rx51 b/doc/README.nokia_rx51 index 1be0775..e739b02 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 |