[PATCH v4 0/2] Add support for loading images above 4GB

[Michal Simek]

po 19. 10. 2020 v 16:35 odesílatel Michal Simek
<michal.simek at xilinx.com> napsal:
>
> Hi,
>
> We have several use cases where customers want to partition memory by
> putting NS images above 4GB. On Xilinx arm 64bit SOC 0-2GB can be used for
> others CPU in the systems (like R5) or for secure sw.
> Currently there is limitation in SPL to record load/entry addresses in
> 64bit format because they are recorded in 32bit only.
> This series add support for it.
> Patches have been tested on Xilinx ZynqMP zcu102 board in SD bootmode with
> images generated by binman. Because u-boot is using
> CONFIG_POSITION_INDEPENDENT it can be put to others 4k aligned addresses
> and there is no real need to build it to certain offset.
>
> Thanks,
> Michal
>
> Changes in v4:
> - In case of missing entry point initialize image_info->entry_point to
>   FDT_ERROR. This has been seen on RISCV instances. FDT_ERROR handling
>   should be changed separately because entry_point is uintptr_t and there
>   is no way how to pass error conditions that's why FDT_ERROR is used
>   instead.
> - RISCV32_SPL reports issue that two cells format (64bit value) is
>   unsupported address size. But that's not accurate because two cell format
>   is valid on any 32bit platform. What it is not supported is address above
>   4GB. That's why code is fixed by reading value to 64bit type first and then
>   check if upper 32bits are zero or not. On all 32bit platforms upper bits
>   should be 0 and if not, message is shown.
>
> Changes in v3:
> - Change example to have 64bit addresses for u-boot
> - Add reviewed-by from Simon
>
> Changes in v2:
> - Also fix opensbi
> - Add record to doc/uImage.FIT/howto.txt - reported by Simon
>
> Michal Simek (2):
>   spl: Use standard FIT entries
>   spl: fdt: Record load/entry fit-images entries in 64bit format
>
>  common/fdt_support.c     |  9 +----
>  common/image-fit.c       | 11 +++---
>  common/spl/spl_atf.c     |  7 ++--
>  common/spl/spl_fit.c     |  8 +++-
>  common/spl/spl_opensbi.c |  8 ++--
>  doc/uImage.FIT/howto.txt | 84 ++++++++++++++++++++++++++++++++++++++++
>  6 files changed, 106 insertions(+), 21 deletions(-)
>
> --
> 2.28.0
>

Applied.
M

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Xilinx Microblaze
Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs
U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal SoCs