[PATCH] ARM: stm32: fix PRE_CON_BUF_ADDR on STM32MP13

[Patrice CHOTARD]

On 7/28/25 09:19, Patrice Chotard wrote:
> From: Patrick Delaunay <patrick.delaunay at foss.st.com>
> 
> Since SYS_MALLOC_F_LEN increasing to 0x2100000 on STM32MP13, the
> pre-console buffer is overlapped by stack (0xC0400000 + 0x2100000),
> so the this buffer must be moved just before the bootstage to avoid issue.
> 
> After this patch the pre-relocation memory mapping for STM32MP13x is:
> 
> C3000000	= Bootstage	CONFIG_BOOTSTAGE_STASH_ADDR
> C2FFF000	= PreConsole	CONFIG_PRE_CON_BUF_ADDR
>            with size CONFIG_PRE_CON_BUF_SZ = 4096
> C0400000	= start for stack	with CONFIG_CUSTOM_SYS_INIT_SP_ADDR
>            including CONFIG_SYS_MALLOC_F_LEN
> C0000000	= Load Address of U-Boot	with CONFIG_TEXT_BASE
> 
> Fixes: 93c962c7af7e ("configs: stm32mp13: increase SYS_MALLOC_F_LEN to 0x210000")
> Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
> Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
> ---
> 
>  arch/arm/mach-stm32mp/Kconfig.13x | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-stm32mp/Kconfig.13x b/arch/arm/mach-stm32mp/Kconfig.13x
> index bc8b3f8cf77..fe323307e47 100644
> --- a/arch/arm/mach-stm32mp/Kconfig.13x
> +++ b/arch/arm/mach-stm32mp/Kconfig.13x
> @@ -23,7 +23,7 @@ config TEXT_BASE
>  	default 0xC0000000
>  
>  config PRE_CON_BUF_ADDR
> -	default 0xC0800000
> +	default 0xC2FFF000
>  
>  config PRE_CON_BUF_SZ
>  	default 4096
Applied to u-boot-stm32/master

Thanks
Patrice