On Wed, 11 Sept 2024 at 00:30, Patrick Rudolph patrick.rudolph@9elements.com 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.
U-Boot
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@9elements.com Cc: Matthias Brugger mbrugger@suse.com Cc: Peter Robinson pbrobinson@gmail.com
arch/arm/mach-bcm283x/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Simon Glass sjg@chromium.org
(with above fixed)
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-- 2.46.0