[U-Boot] [PATCH] riscv: ax25-ae350: Pass dtb address to u-boot with a1 register

[Bin Meng]

Hi Rick,

On Thu, Oct 25, 2018 at 9:20 AM Andes <uboot at andestech.com> wrote:
>
> From: Rick Chen <rick at andestech.com>
>
> ax25-ae350 use CONFIG_OF_BOARD which allow the board to
> override the fdt address. And prior_stage_fdt_address offer
> a temporary memory address to keep the dtb address which was
> passed from loader(gdb) to u-boot with a1.

nits: U-Boot

>
> Signed-off-by: Rick Chen <rick at andestech.com>
> Cc: Greentime Hu <greentime at andestech.com>
> ---
>  board/AndesTech/ax25-ae350/ax25-ae350.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/board/AndesTech/ax25-ae350/ax25-ae350.c b/board/AndesTech/ax25-ae350/ax25-ae350.c
> index 5f4ca0f..d343453 100644
> --- a/board/AndesTech/ax25-ae350/ax25-ae350.c
> +++ b/board/AndesTech/ax25-ae350/ax25-ae350.c
> @@ -14,6 +14,7 @@
>
>  DECLARE_GLOBAL_DATA_PTR;
>
> +extern phys_addr_t prior_stage_fdt_address;
>  /*
>   * Miscellaneous platform dependent initializations
>   */
> @@ -66,7 +67,7 @@ ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
>
>  void *board_fdt_blob_setup(void)
>  {
> -       void **ptr = (void *)CONFIG_SYS_SDRAM_BASE;
> +       void **ptr = (void *)&prior_stage_fdt_address;
>         if (fdt_magic(*ptr) == FDT_MAGIC)
>                         return (void *)*ptr;
>
> --

board_fdt_blob_setup() should be completely removed. Instead the
simple fix should be add CONFIG_OF_PRIOR_STAGE to your board defconfig
files.

Regards,
Bin