[PATCH 1/2] configs: am571x_hs_evm_defconfig: Reserve EMIF memory used by PPA

[Kumar, Udit]

On 11/28/2025 12:13 PM, Beleswar Padhi wrote:
> The AM571x SoC has 1 GB DDR space. As part of normal re-location process
> U-Boot copies itself to the top of DDR bank. However, on HS devices, the
> top 0x2500000 is used by PPA and is firewalled. This results in an

0x2500000 to 37MB

> exception and the boot fails.
>
> Introduce a new defconfig for AM571x HS platforms and set
> CONFIG_SYS_MEM_TOP_HIDE to reserve the top 0x2600000 memory (aligned to
> 2MB as per page size for ARM32) for the same.

0x2600000 to 38MB

>
> Signed-off-by: Beleswar Padhi <b-padhi at ti.com>
> ---
>   configs/am571x_hs_evm_defconfig | 3 +++
>   1 file changed, 3 insertions(+)
>   create mode 100644 configs/am571x_hs_evm_defconfig
>
> diff --git a/configs/am571x_hs_evm_defconfig b/configs/am571x_hs_evm_defconfig
> new file mode 100644
> index 00000000000..7e44ee5221a
> --- /dev/null
> +++ b/configs/am571x_hs_evm_defconfig
> @@ -0,0 +1,3 @@
> +#include <configs/am57xx_hs_evm_defconfig>
> +
> +CONFIG_SYS_MEM_TOP_HIDE=0x2600000