On 10/10/26 09:59, [email protected] wrote:
> From: Ye Li <[email protected]>
>
> The default u-boot early MMU table address is at CFG_SYS_SDRAM_BASE.
> The same address is used as alias target on Toradex's iMX95 boards in
> RAM-size probe. When a probe address aliases that location, the test
> temporarily overwrites an entry in the active page tables.
>
> To avoid such overlap, move u-boot early MMU table to top 2MB of first
> 64MB DDR.
>
> Signed-off-by: Ye Li <[email protected]>
> ---
> arch/arm/mach-imx/imx9/scmi/soc.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-imx/imx9/scmi/soc.c
> b/arch/arm/mach-imx/imx9/scmi/soc.c
> index 22f9c9d045b..fa6b9a0e53d 100644
> --- a/arch/arm/mach-imx/imx9/scmi/soc.c
> +++ b/arch/arm/mach-imx/imx9/scmi/soc.c
> @@ -613,9 +613,12 @@ __weak unsigned long board_spl_mmu_tlb_base(void)
> #endif
> }
>
> +/* Uboot early MMU only map first 64MB DDR before DM init.
> + * Set default early MMU table at top 2MB of first 64MB DDR
> + */
> __weak unsigned long board_early_mmu_tlb_base(void)
> {
> - return CFG_SYS_SDRAM_BASE;
> + return CFG_SYS_SDRAM_BASE + SZ_64M - SZ_2M;
> }
>
> /*
Hello Ye,
thanks for the patch.
Reviewed-by: Emanuele Ghidoli <[email protected]>
Tested-by: Emanuele Ghidoli <[email protected]>
