On 1/13/20 12:16 PM, Alexandre Torgue wrote: > Hi, > > The goal of this series is to add device tree build information in dtb. > This information can be dtb build date, where devicetree files come from, > who built the dtb ... Actually, same kind of information that you can find > in the Linux banner which is printout during kernel boot. Having the same > kind of information for device tree is useful for debugging and maintenance. > > To achieve that a new option "-B" (using an argument) is added to dtc. > The argument is a file containing a string with build information > (e.g., From Linux 5.5.0-rc1 by alex the Mon Jan 13 18:25:38 CET 2020). > DTC use it to append dts file with a new string property "Build-info". > > of/fdt.c is modified to printout "Build-info" property during Kernel boot and > scripts/Makefile.lib is modified to use dtc -B option during kernel make (this > last part could be improved for sure). Please read through the thread at: https://lore.kernel.org/linux-arm-kernel/550A42AC.8060104@xxxxxxxxx/ which was my attempt to do something similar. -Frank > > Regards > Alex > > Alexandre Torgue (3): > dtc: Add dtb build information option > of: fdt: print dtb build information > scripts: Use -B dtc option to generate dtb build information. > > drivers/of/fdt.c | 9 +++++++ > scripts/Makefile.lib | 11 +++++--- > scripts/dtc/dtc.c | 55 +++++++++++++++++++++++++++++++++----- > scripts/gen_dtb_build_info | 11 ++++++++ > 4 files changed, 76 insertions(+), 10 deletions(-) > create mode 100755 scripts/gen_dtb_build_info >
