[U-Boot] [RFC PATCH 07/11] riscv: support SPL stack and global data relocation

[Bin Meng]

On Mon, Jul 22, 2019 at 2:00 AM Lukas Auer
<lukas.auer at aisec.fraunhofer.de> wrote:
>
> To support relocation of the stack and global data on RISC-V, the
> secondary harts must be notified of the change using IPIs. We can reuse
> the hart relocation code for this purpose. It uses global data to store
> the new stack pointer and global data pointer for the secondary harts.
> This means that we cannot update the global data pointer of the main
> hart in spl_relocate_stack_gd(), because the secondary harts have not
> yet been relocated at this point. It is updated after the secondary
> harts have been notified.
>
> Signed-off-by: Lukas Auer <lukas.auer at aisec.fraunhofer.de>
> ---
>
>  arch/riscv/cpu/start.S | 35 ++++++++++++++++++++++++++++++++++-
>  common/spl/spl.c       |  2 +-
>  2 files changed, 35 insertions(+), 2 deletions(-)
>

Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
Tested-by: Bin Meng <bmeng.cn at gmail.com>