[PATCH v3 9/9] qemu-arm: get FDT from bloblist

[Simon Glass]

Hi,

On Fri, Dec 22, 2023 at 9:32 PM Raymond Mao <raymond.mao at linaro.org> wrote:
>
> Get devicetree from a bloblist if it exists.
> If not, fallback to get FDT from the specified memory address.
>
> Signed-off-by: Raymond Mao <raymond.mao at linaro.org>
> ---
> Changes in v2
> - Refactor of board_fdt_blob_setup().
>
>  board/emulation/qemu-arm/qemu-arm.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)
>

I believe this patch will not be needed, since we have fdtdec_setup()
to do this.

> diff --git a/board/emulation/qemu-arm/qemu-arm.c b/board/emulation/qemu-arm/qemu-arm.c
> index e225011bf0..d326668caf 100644
> --- a/board/emulation/qemu-arm/qemu-arm.c
> +++ b/board/emulation/qemu-arm/qemu-arm.c
> @@ -149,9 +149,17 @@ int dram_init_banksize(void)
>
>  void *board_fdt_blob_setup(int *err)
>  {
> +       void *fdt = NULL;
>         *err = 0;
> -       /* QEMU loads a generated DTB for us at the start of RAM. */
> -       return (void *)CFG_SYS_SDRAM_BASE;
> +
> +       /* Check if a DTB exists in bloblist */
> +       if (IS_ENABLED(CONFIG_BLOBLIST) && !bloblist_maybe_init())
> +               fdt = bloblist_find(BLOBLISTT_CONTROL_FDT, 0);
> +       if (!fdt)
> +               /* QEMU loads a generated DTB for us at the start of RAM. */
> +               return (void *)CFG_SYS_SDRAM_BASE;
> +
> +       return fdt;
>  }
>
>  int board_bloblist_from_boot_arg(unsigned long addr, unsigned long size)
> --
> 2.25.1
>

Regards,
Simon