Hi Mikhail, On Thu, 27 Jun 2024 at 12:35, Mikhail Kshevetskiy <mikhail.kshevets...@iopsys.eu> wrote: > > U-Boot with linked fit dtb image may be loaded by a bootloader to > a low memory. On a later stage U-Boot will relocate itself and used > dtb. > > There is no problem until we decide to reselect dtb on a later stage. > In this case dtb placed in the low memory address may be selected. > But this data can be overwritted by flash reading or network file > transfer. Thus we will use damaged dtb. > > To fix it move the whole fit dtb image instead of just used dtb. > > Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevets...@iopsys.eu> > --- > boot/boot_fit.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++ > common/board_f.c | 34 ++++++++++++++++++++++++++++---- > include/boot_fit.h | 8 ++++++++ > 3 files changed, 86 insertions(+), 4 deletions(-) >
The current mechanism is in reloc_fdt() but it only happens during relocation. What is the later stage you refer to? Is it after relocation, or before? Regards, Simon
