[PATCH v4 26/35] arm: mach-bcm283x: Map the ARM local MMIO as well

[Matthias Brugger]

On 18/09/2024 17:20, Patrick Rudolph wrote:
> Cover the "ARM local MMIO" range as well in the default MMU mapping in
> order to allow future code to access the GIC-400 without crashing. For
> now the GIC is not touched in u-boot, thus this change is a noop.
> 
> See [1](BCM2711 ARM Peripherals) for reference.
> 
> TEST: Enabled CONFIG_GICV2 and accessed the GIC in C code without crash.
> 
> 1: https://datasheets.raspberrypi.com/bcm2711/bcm2711-peripherals.pdf
> 
> Signed-off-by: Patrick Rudolph <patrick.rudolph at 9elements.com>
> Cc: Matthias Brugger <mbrugger at suse.com>
> Cc: Peter Robinson <pbrobinson at gmail.com>

Acked-by: Matthias Brugger <mbrugger at suse.com>

> ---
>   arch/arm/mach-bcm283x/init.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-bcm283x/init.c b/arch/arm/mach-bcm283x/init.c
> index 1b459707bc..7a1de22e0a 100644
> --- a/arch/arm/mach-bcm283x/init.c
> +++ b/arch/arm/mach-bcm283x/init.c
> @@ -50,7 +50,7 @@ static struct mm_region bcm2711_mem_map[MEM_MAP_MAX_ENTRIES] = {
>   	}, {
>   		.virt = 0xfc000000UL,
>   		.phys = 0xfc000000UL,
> -		.size = 0x03800000UL,
> +		.size = 0x04000000UL,
>   		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
>   			 PTE_BLOCK_NON_SHARE |
>   			 PTE_BLOCK_PXN | PTE_BLOCK_UXN